CN110233565A - Drive control circuit and household appliance - Google Patents
Drive control circuit and household appliance Download PDFInfo
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- CN110233565A CN110233565A CN201910605438.5A CN201910605438A CN110233565A CN 110233565 A CN110233565 A CN 110233565A CN 201910605438 A CN201910605438 A CN 201910605438A CN 110233565 A CN110233565 A CN 110233565A
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- switching tube
- signal
- control circuit
- drive control
- bridge
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- 238000000034 method Methods 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 14
- 238000001914 filtration Methods 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 239000003990 capacitor Substances 0.000 claims description 35
- 230000005669 field effect Effects 0.000 claims description 17
- 239000004065 semiconductor Substances 0.000 claims description 17
- 229910044991 metal oxide Inorganic materials 0.000 claims description 13
- 150000004706 metal oxides Chemical class 0.000 claims description 13
- 230000000875 corresponding effect Effects 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000002596 correlated effect Effects 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 238000004146 energy storage Methods 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 3
- 238000005070 sampling Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 11
- 230000005611 electricity Effects 0.000 description 10
- 238000012421 spiking Methods 0.000 description 8
- 238000004590 computer program Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 230000002459 sustained effect Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 206010034703 Perseveration Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 208000032365 Electromagnetic interference Diseases 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4225—Arrangements for improving power factor of AC input using a non-isolated boost converter
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4233—Arrangements for improving power factor of AC input using a bridge converter comprising active switches
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M5/4585—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
- H03K17/6871—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors the output circuit comprising more than one controlled field-effect transistor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Rectifiers (AREA)
- Inverter Devices (AREA)
- Power Conversion In General (AREA)
Abstract
The present invention provides a kind of drive control circuit and household appliances, wherein, drive control circuit includes: half-bridge circuit, and the half-bridge circuit is configured as carrying out conversion process to power supply signal, the half-bridge circuit specifically includes: switching tube, and the switching tube is configured with control terminal；Filter module, the filter module are configured as filtering out the electromagnetic interference signal that the switching tube generates, and the filter module access is in the conducting route of the half-bridge circuit.According to the technical solution of the present invention, the electromagnetic interference signal that switching tube generates during HF switch is reduced, is conducive to promote the accuracy of circuit sampling signal and the reliability of control process.
Description
Technical field
The present invention relates to drive control fields, in particular to a kind of drive control circuit and a kind of household appliance.
Background technique
Convertible frequency air-conditioner market at present generallys use rectifier, inductor, PFC (Power to promote load running efficiency
Factor Correction, PFC) mould group, the drive control of electrolytic capacitor and inverter composition motor (load)
Circuit.
In the related technology, in order to reduce the power consumption of BOOST type PFC and the power consumption of rectifier, using totem pole type PFC mould group
BOOST type PFC and rectifier are substituted, still, in order to further improve the efficiency of circuit, totem pole type PFC is usually set
At least one half-bridge circuit in mould group keeps high-frequency work, this is resulted in drive control circuit, and there are EMI (Electro-
Magnetic Interference, electromagnetic interference) excessively high problem, severely impact the reliability of drive control circuit.
In addition, any discussion of the whole instruction to background technique, not representing the background technique must be fields
The prior art that technical staff is known, not representing in the whole instruction to any discussion of the prior art think that this is existing
Technology must be widely known or certain common knowledge for constituting this field.
Summary of the invention
The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.
For this purpose, an object of the present invention is to provide a kind of drive control circuits.
Yet another object of the invention is that proposing a kind of household appliance.
In the technical solution of the first aspect of the present invention, a kind of drive control circuit is proposed, comprising: half-bridge circuit,
The half-bridge circuit is configured as carrying out conversion process to power supply signal, and the half-bridge circuit specifically includes: switching tube, described to open
It closes pipe and is configured with control terminal；Filter module, the filter module are configured as filtering out the electromagnetism that the switching tube generates
Interference signal, the filter module access is in the conducting route of the half-bridge circuit.
In the technical scheme, due to being equipped with switching tube in half-bridge circuit, switching tube is according to specific pulse driving signal
When work, high di/dt and dv/dt can be generated, is presented as surge circuit and peak voltage respectively in drive control circuit, and is opened
The generally rectangular wave of drive pulse signal for closing pipe, in addition, MOSFET (Metal-Oxide-Semiconductor Field
Effect Transistor, Metal Oxide Semiconductor Field Effect Transistor) source and drain waveform be also approximately at rectangular wave, rectangle
The period inverse of wave determines the fundamental frequency of waveform, and the rising time of the pulse drive signal of high frequency and failing edge time
Inverse determine the frequency values of frequency component, usual frequency values are in MHz magnitude, and harmonic frequency is just higher, these are all
Sampled signal, driving signal and operational reliability in drive control circuit is caused seriously to interfere.
Therefore, for the electromagnetic interference signal generated in switching tube, filter module is set and is accessed in the half-bridge circuit
It is connected in route, is mainly used for absorbing the electromagnetic interference signal carried in half-bridge circuit output signal, it is dry to thereby reduce electromagnetism
Interference of the signal to drive control circuit is disturbed, especially, is conducive to be promoted sampled signal, the driving signal in drive control circuit
And reliability of operation.
In addition, what deserves special emphasis is that, reducing electromagnetic interference signal is also very intentionally for switching tube itself
Justice, because in switching tube according in the specific pulse driving signal course of work, it is super that electromagnetic interference signal may cause switching tube
Preceding conducting, lag conducting or breakdown, and the technical solution of the application can be further by filtering out electromagnetic interference signal
Lifting switch pipe reliability of operation, meanwhile, advantageously reduce the failure rate of switching tube.
Wherein, pulse drive signal includes turn-on time, duty ratio and switching frequency etc., but not limited to this.
Optionally, capacitive element is set usually in filter module to absorb electromagnetic interference signal.
In addition, drive control circuit according to the above embodiment of the present invention, can also have the following additional technical features:
In any of the above-described technical solution, optionally, further includes: bridge-type mould group, the bridge-type mould group include two parallel connections
The half-bridge circuit, if the bridge-type mould group input terminal access AC signal, the bridge-type mould group output end output
Direct current signal, if the input terminal of the bridge-type mould group accesses direct current signal, the output end output exchange letter of the bridge-type mould group
Number, wherein it is negatively correlated between the capacitance of the filter module and the switching frequency of the switching tube.
In the technical scheme, the conversion process of power supply signal is realized by the on and off of switching tube, usually
The AC signal of input is converted into direct current signal, or the direct current signal of input is converted into AC signal, since switching tube exists
The load running stage is perseveration, it is possible to create a large amount of spikings and electromagnetic interference signal, and also switching frequency is bigger,
Electromagnetic interference signal is bigger, will affect electric signal transmission to next stage circuit module, therefore, by the capacitance that filter module is arranged
It is negative correlation with switching frequency, to promote the filtration result to electromagnetic interference signal.
In any of the above-described technical solution, optionally, further includes: PFC mould group, the PFC
Mould group includes two half-bridge circuits in parallel, and the switching tube of four bridge arms of the PFC mould group is successively denoted as
First switch tube, second switch, third switching tube and the 4th switching tube, the first switch tube and the second switch it
Between common end access the first incoming line of the AC signal, between the third switching tube and the 4th switching tube
Common end is accessed between the second incoming line and the first switch tube and the 4th switching tube of the AC signal
The corresponding high voltage bus of the pulsating direct current signal is accessed in common end, between the second switch and the third switching tube
The corresponding low-voltage bus bar of the pulsating direct current signal is accessed in common end.
It in the technical scheme, include two half-bridge circuits in parallel by the way that PFC mould group is arranged, and four
It is equipped with switching tube in bridge arm, that is, constitutes totem pole type PFC (Power Factor Correction, PFC)
Mould group, optionally, upper switch pipe in half-bridge circuit is NPN type triode, and lower switch pipe is PNP type triode, and upper switch
Pipe is that common emitter connects with lower switch pipe, and emitter is also an output end of above-mentioned totem pole type PFC mould group.
Alternatively it is also possible to set MOSFET (Metal-Oxide- for the switching tube in totem pole type PFC mould group
Semiconductor Field Effect Transistor, Metal Oxide Semiconductor Field Effect Transistor), switching tube
It can be SiC-type power tube or GaN-type power tube, therefore, the switching frequency of switching tube can be promoted further, although can
Load running efficiency is further promoted, still, electromagnetic interference signal is stronger, this just needs that filter module is added to reduce electromagnetism
Interference signal.
Optionally, it is integrated between the source electrode (emitter) of the switching tube of above-mentioned totem pole type PFC and drain electrode (collector)
Reversed freewheeling diode.
In any of the above-described technical solution, optionally, the first end of the filter module is connected to the first switch tube
With the common end between the 4th switching tube, the second end of the filter module is connected to the second switch and described the
Common end between three switching tubes, wherein the filter module is configured as the output end of the PFC mould group
Filtering unit work, the filter module is for being filtered the direct current signal after the conversion process.
In the technical scheme, it is opened by the way that the first end of filter module is connected to the first switch tube with the described 4th
The common end between pipe is closed, the second end of the filter module is connected between the second switch and the third switching tube
Common end, filter module can to PFC mould group export signal be filtered, to reduce electromagnetic interference signal to rear class
The influence of circuit operation.
In any of the above-described technical solution, optionally, further includes: inverter, the inverter include at least two in parallel
The half-bridge circuit, the filter module is for being filtered the AC signal after the conversion process.
In the technical scheme, if inverter includes two half-bridge circuits in parallel, single-phase load can be driven to run,
If inverter includes three half-bridge circuits in parallel, threephase load can be driven to run.
In any of the above-described technical solution, optionally, the filter module includes a capacity cell or multiple series connection
And/or capacity cell in parallel, the capacity cell are X capacitor or thin-film capacitor.
In the technical scheme, X capacitor bridging zero curve and firewire eliminate the noise between zero curve and firewire, i.e. differential mode is dry
It disturbs, or is low pass normality noise, X capacitor only allows the alternating current of 50Hz to pass through, can be effectively reduced DM EMI to rear class
The interference of circuit.
In any of the above-described technical solution, optionally, the capacitance range of the filter module is 0.01uF~10uF.
In any of the above-described technical solution, optionally, the switching tube is Metal Oxide Semiconductor Field Effect Transistor
Or insulated gate bipolar transistor, wherein the grid of the Metal Oxide Semiconductor Field Effect Transistor is connected to controller
Instruction output end, access reversed two pole of afterflow between the source electrode and drain electrode of the Metal Oxide Semiconductor Field Effect Transistor
Pipe, the base stage of the insulated gate bipolar transistor are connected to the instruction output end of controller, the insulated gate bipolar crystal
Reversed freewheeling diode is accessed between the emitter and collector of pipe.
In any of the above-described technical solution, optionally, further includes: electrolytic capacitor, set on the output end of the half-bridge circuit,
The electrolytic capacitor is configured as receiving the direct current signal and is converted to direct current signal；Inverter is connected to the electrolysis electricity
The output end of appearance, the inverter are configured as controlling the direct current signal to load supplying, wherein the appearance of the electrolytic capacitor
Value value range is 10uF~20000uF.
In the technical scheme, electrolytic capacitor is arranged by the output end in half-bridge circuit, on the one hand, electrolytic capacitor can
The electricity of load running is provided, on the other hand, electrolytic capacitor can also absorb the surging signal for including in drive control circuit, in conjunction with
Filter module and electrolytic capacitor can further reduce the electromagnetic interference signal and noise for flowing to inverter, be conducive to be promoted
The reliability of load running.
In any of the above-described technical solution, optionally, further includes: inductor, access is in the AC signal corresponding the
In one incoming line, the inductor is configured as carrying out energy storage to the input signal of the PFC mould group.
In the technical scheme, the inductance in corresponding first incoming line of AC signal is accessed by setting inductor
Device, PFC module and electrolytic capacitor cooperate, i.e., before load running, are pre-charged to electrolytic capacitor, when charging voltage is big
In or equal to load starting voltage when, the electricity of electrolytic capacitor storage drives load running, to reduce power up power supply
Impact of the signal to load.
In any of the above-described technical solution, optionally, further includes: electric power detection mould group is accessed in second input line
Lu Zhong, the electric power detection mould group are configured as detecting the AC signal to the power supply volume of the load, and the power supply volume is used
It is adjusted in the switching frequency to the switching tube.
In the technical scheme, by setting electric power detection mould group access in the second incoming line, to power supply signal into
Row detection, and switching frequency is adjusted according to testing result, for example, detecting that it is more that the electric current in power supply signal carries
When spiking, in order to avoid spiking amplifies and is superimposed by half-bridge circuit, it can be reduced by reducing switching frequency
Electromagnetic interference signal and spiking.
In the technical solution of the second aspect of the present invention, a kind of household appliance is proposed, comprising: load；Such as the present invention
Any one of first aspect technical solution described in drive control circuit, the dynamic control circuit is configured control for telecommunications
Number to load supplying.
In the technical scheme, household appliance includes drive control circuit as described in the above technical scheme, therefore, should
Household appliance includes whole beneficial effects of drive control circuit as described in the above technical scheme, is repeated no more again.
In the above-mentioned technical solutions, optionally, the household appliance include air conditioner, refrigerator, fan, smoke exhaust ventilator,
At least one of dust catcher and host computer.
Additional aspect and advantage of the invention will become obviously in following description section, or practice through the invention
Recognize.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 shows the schematic diagram of drive control circuit according to an embodiment of the invention；
Fig. 2 shows the schematic diagrames of drive control circuit according to another embodiment of the invention；
Fig. 3 shows the spectrum measurement figure of drive control circuit according to an embodiment of the invention；
Fig. 4 shows the spectrum measurement figure of drive control circuit according to another embodiment of the invention；
Fig. 5 shows the spectrum measurement figure of drive control circuit according to an embodiment of the invention；
Fig. 6 shows the spectrum measurement figure of drive control circuit according to another embodiment of the invention.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
It is carried out below with reference to drive control circuit and household appliance of the Fig. 1 to Fig. 6 to embodiment according to the present invention specific
Explanation.
As depicted in figs. 1 and 2, drive control circuit according to an embodiment of the invention, comprising: half-bridge circuit, institute
It states half-bridge circuit to be configured as carrying out conversion process to power supply signal AC, the half-bridge circuit specifically includes: switching tube, described to open
It closes pipe and is configured with control terminal；Filter module C, the filter module C are configured as filtering out the electricity that the switching tube generates
Magnetic disturbance signal, the filter module C access is in the conducting route of the half-bridge circuit.
In the technical scheme, due to being equipped with switching tube in half-bridge circuit, switching tube is according to specific pulse driving signal
When work, high di/dt and dv/dt can be generated, is presented as surge circuit and peak voltage respectively in drive control circuit, and is opened
The generally rectangular wave of drive pulse signal for closing pipe, in addition, MOSFET (Metal-Oxide-Semiconductor Field
Effect Transistor, Metal Oxide Semiconductor Field Effect Transistor) source and drain waveform be also approximately at rectangular wave, rectangle
The period inverse of wave determines the fundamental frequency of waveform, and the rising time of the pulse drive signal of high frequency and failing edge time
Inverse determine the frequency values of frequency component, usual frequency values are in MHz magnitude, and harmonic frequency is just higher, these are all
Sampled signal, driving signal and operational reliability in drive control circuit is caused seriously to interfere.
Therefore, for the electromagnetic interference signal generated in switching tube, filter module C is set and is accessed in the half-bridge circuit
It is connected in route, is mainly used for absorbing the electromagnetic interference signal carried in half-bridge circuit output signal, it is dry to thereby reduce electromagnetism
Interference of the signal to drive control circuit is disturbed, especially, is conducive to be promoted sampled signal, the driving signal in drive control circuit
And reliability of operation.
In addition, what deserves special emphasis is that, reducing electromagnetic interference signal is also very intentionally for switching tube itself
Justice, because in switching tube according in the specific pulse driving signal course of work, it is super that electromagnetic interference signal may cause switching tube
Preceding conducting, lag conducting or breakdown, and the technical solution of the application can be further by filtering out electromagnetic interference signal
Lifting switch pipe reliability of operation, meanwhile, advantageously reduce the failure rate of switching tube.
Wherein, pulse drive signal includes turn-on time, duty ratio and switching frequency etc., but not limited to this.
Optionally, capacitive element is set usually in filter module C to absorb electromagnetic interference signal.
In addition, drive control circuit according to the above embodiment of the present invention, can also have the following additional technical features:
In any of the above-described technical solution, optionally, further includes: bridge-type mould group, the bridge-type mould group include two parallel connections
The half-bridge circuit, if the bridge-type mould group input terminal access AC signal, the bridge-type mould group output end output
Direct current signal, if the input terminal of the bridge-type mould group accesses direct current signal, the output end output exchange letter of the bridge-type mould group
Number, wherein it is negatively correlated between the capacitance of the filter module C and the switching frequency of the switching tube.
In the technical scheme, the conversion process of power supply signal AC is realized by the on and off of switching tube, usually
It is the AC signal of input to be converted to direct current signal, or the direct current signal of input is converted into AC signal, due to switching tube
It is perseveration in the load running stage, it is possible to create a large amount of spikings and electromagnetic interference signal, and also switching frequency is got over
Greatly, electromagnetic interference signal is bigger, will affect electric signal transmission to next stage circuit module and therefore passes through setting filter module C's
Capacitance and switching frequency are negative correlation, to promote the filtration result to electromagnetic interference signal.
In any of the above-described technical solution, optionally, further includes: PFC mould group, the PFC
Mould group includes two half-bridge circuits in parallel, and the switching tube of four bridge arms of the PFC mould group is successively denoted as
First switch tube Q1, second switch Q2, third switching tube Q3With the 4th switching tube Q4, the first switch tube Q1With described second
Switching tube Q2Between common end access the first incoming line of the AC signal, the third switching tube Q3With the described 4th
Switching tube Q4Between common end access the second incoming line and the first switch tube Q of the AC signal1With it is described
4th switching tube Q4Between common end access the corresponding high voltage bus of the pulsating direct current signal, the second switch Q2With
The third switching tube Q3Between common end access the corresponding low-voltage bus bar of the pulsating direct current signal.
It in the technical scheme, include two half-bridge circuits in parallel by the way that PFC mould group is arranged, and four
It is equipped with switching tube in bridge arm, that is, constitutes totem pole type PFC (Power Factor Correction, PFC)
Mould group, optionally, upper switch pipe in half-bridge circuit is NPN type triode, and lower switch pipe is PNP type triode, and upper switch
Pipe is that common emitter connects with lower switch pipe, and emitter is also an output end of above-mentioned totem pole type PFC mould group.
Alternatively it is also possible to set MOSFET (Metal-Oxide- for the switching tube in totem pole type PFC mould group
Semiconductor Field Effect Transistor, Metal Oxide Semiconductor Field Effect Transistor), switching tube
It can be SiC type power tube or GaN type power tube, therefore, the switching frequency of switching tube can be promoted further, although can
Load running efficiency is further promoted, still, electromagnetic interference signal is stronger, this just needs that filter module C is added to reduce electricity
Magnetic disturbance signal.
Optionally, it is integrated between the source electrode (emitter) of the switching tube of above-mentioned totem pole type PFC and drain electrode (collector)
Reversed freewheeling diode, for example, first switch tube Q1Source and drain between access have the first reversed sustained diode1, second switch
Pipe Q2Source and drain between access have the second reversed sustained diode2, third switching tube Q3Source and drain between access have third reversed
Sustained diode3, the 4th switching tube Q4Source and drain between access have the 4th reversed sustained diode4。
In any of the above-described technical solution, optionally, the first end of the filter module C is connected to the first switch tube
Q1With the 4th switching tube Q4Between common end, the second end of the filter module C is connected to the second switch Q2With
The third switching tube Q3Between common end, wherein the filter module C is configured as the PFC mould group
The work of output end filtering unit, the filter module C is for being filtered the direct current signal after the conversion process.
In the technical scheme, by the way that the first end of filter module C is connected to the first switch tube Q1With described
Four switching tube Q4Between common end, the second end of the filter module C is connected to the second switch Q2It is opened with the third
Close pipe Q3Between common end, the signal that filter module C can export PFC mould group be filtered, dry to reduce electromagnetism
Disturb the influence that signal runs late-class circuit.
In any of the above-described technical solution, optionally, further includes: inverter, the inverter include at least two in parallel
The half-bridge circuit, the filter module C is for being filtered the AC signal after the conversion process.
In the technical scheme, if inverter includes two half-bridge circuits in parallel, single-phase load can be driven to run,
If inverter includes three half-bridge circuits in parallel, threephase load can be driven to run.
In any of the above-described technical solution, optionally, the filter module C includes a capacity cell or multiple series connection
And/or capacity cell in parallel, the capacity cell are X capacitor or thin-film capacitor.
In the technical scheme, X capacitor bridging zero curve and firewire eliminate the noise between zero curve and firewire, i.e. differential mode is dry
It disturbs, or is low pass normality noise, X capacitor only allows the alternating current of 50Hz to pass through, can be effectively reduced DM EMI to rear class
The interference of circuit.
In any of the above-described technical solution, optionally, the capacitance range of the filter module C is 0.01uF~10uF.
In any of the above-described technical solution, optionally, the switching tube is Metal Oxide Semiconductor Field Effect Transistor
Or insulated gate bipolar transistor, wherein the grid of the Metal Oxide Semiconductor Field Effect Transistor is connected to controller
Instruction output end, access reversed two pole of afterflow between the source electrode and drain electrode of the Metal Oxide Semiconductor Field Effect Transistor
Pipe, the base stage of the insulated gate bipolar transistor are connected to the instruction output end of controller, the insulated gate bipolar crystal
Reversed freewheeling diode is accessed between the emitter and collector of pipe.
In any of the above-described technical solution, optionally, further includes: electrolytic capacitor E, set on the output of the half-bridge circuit
End, the electrolytic capacitor E are configured as receiving the direct current signal and are converted to direct current signal；Inverter is connected to the electricity
The output end of capacitor E is solved, the inverter is configured as controlling the direct current signal to load supplying, wherein the electrolysis electricity
The capacitance value range for holding E is 10uF~20000uF.
In the technical scheme, electrolytic capacitor E is arranged by the output end in half-bridge circuit, on the one hand, electrolytic capacitor E energy
The electricity of load running is enough provided, on the other hand, electrolytic capacitor E can also absorb the surging signal for including in drive control circuit,
In conjunction with filter module C and electrolytic capacitor E, the electromagnetic interference signal and noise for flowing to inverter can be further reduced, favorably
In the reliability for promoting load running.
In any of the above-described technical solution, optionally, further includes: inductor L, access is in the AC signal corresponding the
In one incoming line, the inductor L is configured as carrying out energy storage to the input signal of the PFC mould group.
As shown in Fig. 2, in the technical scheme, accessing the first input corresponding in AC signal by setting inductor L
In route, inductor L, PFC module and electrolytic capacitor E cooperate, i.e., before load running, carry out preliminary filling to electrolytic capacitor E
Electricity, when charging voltage is greater than or equal to the starting voltage of load, the electricity of electrolytic capacitor E storage drives load running, with
Reduce impact of the power up power supply signal AC to load.
In any of the above-described technical solution, optionally, further includes: electric power detection mould group S is accessed in second input line
Lu Zhong, the electric power detection mould group S are configured as detecting the AC signal to the power supply volume of the load, and the power supply volume is used
It is adjusted in the switching frequency to the switching tube.
In the technical scheme, it is accessed in the second incoming line by setting electric power detection mould group S, to power supply signal AC
It is detected, and switching frequency is adjusted according to testing result, for example, detecting the electric current carrying in power supply signal AC
When more spiking, in order to avoid spiking by half-bridge circuit amplify and be superimposed, can by reduce switching frequency come
Reduce electromagnetic interference signal and spiking.
The household appliance of embodiment according to the present invention, comprising: load；Driving as described in any of the above-described technical solution
Control circuit, the dynamic control circuit are configured to control power supply signal AC to load supplying.
In the technical scheme, household appliance includes drive control circuit as described in the above technical scheme, therefore, should
Household appliance includes whole beneficial effects of drive control circuit as described in the above technical scheme, is repeated no more again.
In the above-mentioned technical solutions, optionally, the household appliance include air conditioner, refrigerator, fan, smoke exhaust ventilator,
At least one of dust catcher and host computer.
Optionally, first switch tube Q1, second switch Q2, third switching tube Q3With the 4th switching tube Q4It is controlled by one
Controller, in addition, electric power detection mould group S also will test signal and be sent to controller, wherein controller can be MCU (Micro-
Programmed Control Unit, microprogram control unit), CPU (Central Processing Unit, central processing
Machine), one of DSP (Digital Signal Processor, digital signal processor) and embedded device, but be not limited to
This.
The test chart for carrying out disturbance power and disturbance voltage to above-mentioned drive control circuit is as shown in Figures 3 to 6, and Fig. 3 is extremely
The schematic diagram of quasi-peak value reference line, average value reference line, quasi-peak value actual measurement line and average value actual measurement line is shown in Fig. 6.
As shown in figure 3, for the disturbance power being provided in drive control circuit when filter module C, for example, 40kHz~
Within the scope of 100kHz, disturbance power is far below 50 (unit dB × pW).
As shown in figure 4, for the disturbance power being not provided in drive control circuit when filter module C, for example, 40kHz~
Within the scope of 100kHz, disturbance power is close to 50 (unit dB × pW).
After comparison diagram 3 and Fig. 4 are it is found that be provided with filter module C in the driving circuit, the density of disturbance power has significantly
Decline.
As shown in figure 5, for the disturbance voltage being provided in drive control circuit when filter module C.
As shown in fig. 6, for the disturbance voltage being not provided in drive control circuit when filter module C.
After comparison diagram 5 and Fig. 6 are it is found that be provided with filter module C in the driving circuit, the amplitude of disturbance voltage has significantly
Decline.
For the technical problems in the prior art, the invention proposes a kind of drive control circuit and household appliance,
According to the technical solution of the present invention, for the electromagnetic interference signal generated in switching tube, filter module is set and is accessed in described half
In the conducting route of bridge circuit, it is mainly used for absorbing the electromagnetic interference signal carried in half-bridge circuit output signal, and then reduce
Interference of the electromagnetic interference signal to drive control circuit, especially, be conducive to be promoted sampled signal in drive control circuit,
Driving signal and reliability of operation.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
It should be noted that in the claims, any reference symbol between parentheses should not be configured to power
The limitation that benefit requires.Word "comprising" does not exclude the presence of component or step not listed in the claims.Before component
Word "a" or "an" does not exclude the presence of multiple such components.The present invention can be by means of including several different components
It hardware and is realized by means of properly programmed computer.In the unit claims listing several devices, these are filled
Several in setting, which can be, to be embodied by the same item of hardware.The use of word first, second, and third is not
Indicate any sequence.These words can be construed to title.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (13)
1. a kind of drive control circuit characterized by comprising
Half-bridge circuit, the half-bridge circuit are configured as carrying out conversion process to power supply signal, and the half-bridge circuit specifically includes:
Switching tube, the switching tube are configured with control terminal；
Filter module, the filter module are configured as filtering out the electromagnetic interference signal that the switching tube generates, the filtering mould
Group access is in the conducting route of the half-bridge circuit.
2. drive control circuit according to claim 1, which is characterized in that further include:
Bridge-type mould group, the bridge-type mould group include two half-bridge circuits in parallel,
If the input terminal of the bridge-type mould group accesses AC signal, the output end of the bridge-type mould group exports direct current signal,
If the input terminal of the bridge-type mould group accesses direct current signal, the output end of the bridge-type mould group exports AC signal,
It wherein, is negatively correlated between the capacitance of the filter module and the switching frequency of the switching tube.
3. drive control circuit according to claim 1, which is characterized in that further include:
PFC mould group, the PFC mould group include two half-bridge circuits in parallel,
The switching tube of four bridge arms of the PFC mould group is successively denoted as first switch tube, second switch, third
The AC signal is accessed in switching tube and the 4th switching tube, the common end between the first switch tube and the second switch
The first incoming line, the of the AC signal is accessed in the common end between the third switching tube and the 4th switching tube
Two incoming lines,
And the common end access pulsating direct current signal between the first switch tube and the 4th switching tube is corresponding
High voltage bus, it is corresponding that the pulsating direct current signal is accessed in the common end between the second switch and the third switching tube
Low-voltage bus bar.
4. drive control circuit according to claim 3, which is characterized in that
The first end of the filter module is connected to the common end between the first switch tube and the 4th switching tube, described
The second end of filter module is connected to the common end between the second switch and the third switching tube,
Wherein, the filter module is configured as the output end filtering unit work of the PFC mould group, described
Filter module is for being filtered the direct current signal after the conversion process.
5. drive control circuit according to claim 1, which is characterized in that further include:
Inverter, the inverter include at least two half-bridge circuits in parallel, and the filter module is used for described turn
Changing treated, AC signal is filtered.
6. drive control circuit according to any one of claim 1 to 5, which is characterized in that
The filter module includes the capacity cell of a capacity cell or multiple series connection and/or parallel connection, and the capacity cell is
X capacitor or thin-film capacitor.
7. drive control circuit according to any one of claim 1 to 5, which is characterized in that
The capacitance range of the filter module is 0.01uF~10uF.
8. drive control circuit according to any one of claim 1 to 5, which is characterized in that
The switching tube be Metal Oxide Semiconductor Field Effect Transistor or insulated gate bipolar transistor,
Wherein, the grid of the Metal Oxide Semiconductor Field Effect Transistor is connected to the instruction output end of controller, described
Reversed freewheeling diode, the insulated gate bipolar are accessed between the source electrode and drain electrode of Metal Oxide Semiconductor Field Effect Transistor
The base stage of transistor npn npn is connected to the instruction output end of controller, the emitter and collector of the insulated gate bipolar transistor
Between access reversed freewheeling diode.
9. drive control circuit according to any one of claim 1 to 5, which is characterized in that further include:
Electrolytic capacitor, set on the output end of the half-bridge circuit, the electrolytic capacitor is configured as receiving the direct current signal simultaneously
Be converted to direct current signal；
Inverter, is connected to the output end of the electrolytic capacitor, and the inverter is configured as controlling the direct current signal to negative
Power supply is carried,
Wherein, the capacitance value range of the electrolytic capacitor is 10uF~20000uF.
10. drive control circuit according to any one of claim 1 to 5, which is characterized in that further include:
Inductor accesses in corresponding first incoming line of the AC signal, and the inductor is configured as to the function
The input signal of rate factor correcting group carries out energy storage.
11. drive control circuit according to any one of claim 1 to 5, which is characterized in that further include:
Electric power detection mould group accesses in second incoming line, and the electric power detection mould group is configured as detecting the friendship
Signal is flowed to the power supply volume of the load, and the power supply volume is for being adjusted the switching frequency of the switching tube.
12. a kind of household appliance characterized by comprising
Load；
Drive control circuit as described in any one of claims 1 to 11, the dynamic control circuit are configured control for telecommunications
Number to load supplying.
13. household appliance according to claim 12, which is characterized in that
The household appliance includes at least one of air conditioner, refrigerator, fan, smoke exhaust ventilator, dust catcher and host computer.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910605438.5A CN110233565A (en) | 2019-07-05 | 2019-07-05 | Drive control circuit and household appliance |
| PCT/CN2019/112952 WO2021003885A1 (en) | 2019-07-05 | 2019-10-24 | Drive control circuit and home appliance |
| JP2022500132A JP2022540399A (en) | 2019-07-05 | 2019-10-24 | Drive control circuit and home appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910605438.5A CN110233565A (en) | 2019-07-05 | 2019-07-05 | Drive control circuit and household appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110233565A true CN110233565A (en) | 2019-09-13 |
Family
ID=67858057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910605438.5A Pending CN110233565A (en) | 2019-07-05 | 2019-07-05 | Drive control circuit and household appliance |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2022540399A (en) |
| CN (1) | CN110233565A (en) |
| WO (1) | WO2021003885A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021003885A1 (en) * | 2019-07-05 | 2021-01-14 | 广东美的制冷设备有限公司 | Drive control circuit and home appliance |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117997090B (en) * | 2024-01-29 | 2024-10-11 | 华中科技大学 | Ripple wave inhibition staggered parallel converter based on magnetic coupling passive filtering |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2021003885A1 (en) | 2021-01-14 |
| JP2022540399A (en) | 2022-09-15 |
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