CN206349928U - A kind of universal frequency converter - Google Patents
A kind of universal frequency converter Download PDFInfo
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- CN206349928U CN206349928U CN201621261914.4U CN201621261914U CN206349928U CN 206349928 U CN206349928 U CN 206349928U CN 201621261914 U CN201621261914 U CN 201621261914U CN 206349928 U CN206349928 U CN 206349928U
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- 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
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Abstract
The utility model discloses a kind of universal frequency converter, including circuit of power factor correction, SEPIC step-up/step-down circuits, circuit, sine PWM circuit, drive circuit, inverter circuit occur for sample circuit, PWM.The utility model is applied to the place such as family's frequency conversion and carries out frequency conversion, adds power factor correction module, can be corrected to the current waveform of input basically identical with voltage waveform, and phase is the same, it is ensured that effective application of electric power, and will not pollute power network.
Description
Technical field
The invention belongs to converter technique field, more particularly to a kind of universal frequency converter.
Background technology
Electric power energy is the main energy sources of current era, and various equipment all be unable to do without electric power, but are due to that power technology is passed
Defeated problem, causes power frequency and voltage in transmitting procedure by certain influence.And there is the work of some electrical equipment in family
Make voltage not 220V, sometimes due to need of work, it may be desirable to higher voltage, giving people life makes troubles.
If can provide it is a kind of it is small-sized, can family expenses frequency converter, above-mentioned puzzlement will be solved, life is given people and bring just
Profit.
The content of the invention
To solve the above problems, the invention provides a kind of universal frequency converter, including circuit of power factor correction, SEPIC
Circuit, sine PWM circuit, drive circuit, inverter circuit occur for step-up/step-down circuit, sample circuit, PWM.
The circuit of power factor correction uses UCC28019 chips and peripheral circuit.
SEPICSEPIC step-up/step-down circuits include the 4th resistance, the 6th nonpolar electric capacity, the 7th polar capacitor, the tenth polarity
Electric capacity, the first inductance, the first FET, the 8th polar capacitor, the 3rd inductance, the first Schottky diode, the 12nd polarity
Electric capacity, the 13rd nonpolar electric capacity；The annexation of each parts is：First inductance one end is connecting the tenth polar capacitor just
Pole, the other end then connects the source electrode of the first FET and the positive pole of the 8th polar capacitor, the drain electrode connection of the first FET
To second resistance one end, and pass through the 4th resistance eutral grounding；The 6th nonpolar electric capacity is in parallel with the 7th polar capacitor, one end
Parallel connection point ground connection, the other end is connected to the tie point of the first inductance and the tenth polar capacitor；The negative pole of 8th polar capacitor then connects
It is connected to one end of the 3rd inductance and the positive pole of the first Schottky diode, the other end ground connection of the 3rd inductance；First Schottky two
The negative pole of pole pipe connects the 12nd polar capacitor positive pole, the 13rd nonpolar electric capacity one end, first resistor one end；12nd polarity
Electric capacity negative pole, the 13rd nonpolar electric capacity another end ground connection, the first resistor other end are connected to the 3rd adjustable resistance one end.
Drive circuit includes the second driving chip and its peripheral circuit, the second diode, the 9th nonpolar electric capacity, the 11st
Nonpolar electric capacity, second resistance；The annexation of each parts is：One end that second resistance is not connected with the first FET
It is connected to the 7th port of the second driving chip；Second diode cathode is connected to the first port of the second driving chip, the tenth
One nonpolar electric capacity one end, negative pole is connected to the port of the second driving chip the 8th, the 9th nonpolar electric capacity one end；11st
The nonpolar electric capacity other end is then connected to the port of the second driving chip the 3rd and is grounded, and the 9th nonpolar electric capacity other end is then connected
To the 6th port of the second driving chip and it is grounded.
Circuit, which occurs, for PWM includes first resistor, 3rd resistor, the 3rd IC chip and its peripheral circuit, the 19th polarity electricity
Appearance, the 20th nonpolar electric capacity, the 23rd nonpolar electric capacity, the 33rd nonpolar electric capacity, first resistor, the 17th electricity
Resistance, the 22nd resistance, the 23rd resistance, the 24th resistance, the 25th resistance, the 26th resistance, the 29th
Resistance, the 3rd slide rheostat, the 27th slide rheostat, the 32nd slide rheostat, the 33rd slide rheostat；
The annexation of each parts is：One end that first resistor is not connected with the first Schottky diode is connected to the 3rd slip change
Device is hindered, the 3rd slide rheostat other end ground connection, slider is connected to the first of the 3rd IC chip by the 22nd resistance
Port；19th electric capacity point is in parallel with the 20th electric capacity point, and one of point ground connection in parallel, another parallel connection point is connected to electricity
Source, it is connected to the eight, the 11 of the 3rd IC chip, ten Two-port netwerks；The second port of 3rd IC chip passes through the 26th electricity
Resistance is connected to the contact of the 32nd slide rheostat, and one end ground connection of the 32nd slide rheostat, the other end passes through
29th resistance is connected to power supply；24th resistance connected with the 33rd nonpolar electric capacity after with the 25th resistance simultaneously
Connection a, point in parallel is connected to the 3rd port of the 3rd IC chip, and another parallel connection point is then connected to the 33rd slip variable resistance
The contact of device；One end ground connection of 33rd slide rheostat, the other end is then connected to the 14th end of the 3rd IC chip
Mouthful, and it is connected to one end of the 23rd resistance；The other end of 23rd resistance is then connected to the of the 3rd IC chip
15 ports, and it is connected to one end and the contact of the slide rheostat of bottom 27；27th slide rheostat it is another
End ground connection；23rd nonpolar electric capacity one end connects the fifth port of the 3rd IC chip, other end ground connection；17th resistance one
End is connected to the 6th port of the 3rd IC chip, other end ground connection.
SEPIC step-up/step-down circuits include sine wave generation circuit, circuit for generating triangular wave, sine PWM circuit, drive
Dynamic circuit, full bridge inverter.
Full bridge inverter includes the first driving chip, the 16th resistance, the 3rd FET, the 20th resistance, the 5th
FET, the 4th inductance, the second driving chip, the 19th resistance, the 6th FET, the 15th resistance, the 4th field-effect
Pipe, the 5th inductance；Wherein, the waveform of the port of the first driving chip the 7th output is sent to the 3rd field-effect by the 16th resistance
The grid of pipe, then the waveform that the port of the first driving chip the 4th is exported are transported to the 5th FET by the 20th resistance,
6th port of the first driving chip is connected to the 4th inductance one end, and the other end of the 4th inductance is connected to lead-out terminal；Second
The waveform of the 7th port output of driving chip is sent to the 6th FET, the 4th of the second driving chip the by the 19th resistance
The waveform of port output is sent to the 4th FET by the 15th resistance, and the 6th port is connected to one end of the 5th inductance, the
The other end of five inductance is connected to lead-out terminal.
Further, sine wave generation circuit includes the 4th IC chip, the 31st resistance, the 34th resistance, the 3rd
15 resistance, the 36th resistance, the 30th slide rheostat, the 38th varactor；The annexation of each parts
For：31st resistance one end connects power supply, and the other end is connected to the 9th port of the 4th IC chip；34th resistance one end
Power supply is connected, the other end is connected to the fifth port of the 4th IC chip；35th resistance one end connects power supply, other end connection
To the 4th port of the 4th IC chip；30th slide rheostat one end connects power supply, and the other end is connected after the 36th resistance
It is grounded and is connected to the 38th varactor one end, the 38th varactor other end is connected to the 4th IC chip
Tenth port.
Further, sine PWM circuit includes the 6th IC chip, No. two the 6th IC cores, 37
Resistance, the 38th resistance, the 39th resistance, the 40th resistance, the 41st resistance, the 42nd resistance, the 44th
Resistance, the 45th resistance, the 46th resistance, the 43rd slide rheostat；39th resistance, the 40th resistance composition
Series arm and the 45th resistance, the series arm that constitutes of the 46th resistance it is in parallel, point one end in parallel of one end is connected
Power supply, the point ground connection in parallel of the other end；Number a 6th IC chip positive pole connects sine wave generation circuit by the 37th resistance
Output end, negative pole is then grounded, and is connected to a 6th IC chip output end by the 43rd slide rheostat；No. two
6th IC chip positive pole is connected to the output end of the 6th IC chip by the 38th resistance, and negative pole then passes through the 42nd
Resistance connects the output end of circuit for generating triangular wave；No. two the 6th IC chip output ends connect the 41st resistance one end, the 4th
The other end of 11 resistance then exports SPWM ripples.
Further, circuit for generating triangular wave includes the 5th IC chip, the 48th resistance, the 49th resistance, the 5th
Ten resistance, the 51st resistance, the 47th slide rheostat, the 41st nonpolar electric capacity；5th IC chip three-prong
Produce triangular wave；48th resistance one end connects power supply, and the other end is connected to the 9th port of the 5th IC chip；49th
Resistance one end connects power supply, and the other end is connected to the fifth port of the 5th IC chip；50th resistance one end connects power supply, another
End is connected to the 4th port of the 5th IC chip；47th slide rheostat one end connects power supply, and the other end passes through the 50th
One resistance eutral grounding, and be connected to bottom and be connected to the 41st nonpolar electric capacity one end, regulation head is then connected to the 5th IC chip
8th port；The other end of 41st nonpolar electric capacity is then connected to the tenth port of the 5th IC chip.
Further, in addition to auxiliary power circuit, it includes rectifier bridge, the first polar capacitor, the second polar capacitor, and
Three nonpolar electric capacity, the first driving chip, the positive pole of quadripolarity electric capacity, the 5th nonpolar electric capacity；Wherein, the first polarity electricity
Appearance, the second polar capacitor, the 3rd nonpolar electric capacity are in parallel, the positive input terminal of one end parallel connection point the first rectifier bridge of connection and the first drive
First pin of dynamic chip, the negative input end of other end parallel connection point the first rectifier bridge of connection and the second of the first driving chip are drawn
Pin；Two pins of the first binding post connect two output ends of the first rectifier bridge；First driving chip second pin is connected to
Small-power, the point in parallel that quadripolarity electric capacity constitutes parallel circuit with the 5th nonpolar electric capacity connects the 3rd pin, separately
One point in parallel is then connected to second pin and is grounded；3rd pin is output end.
Further, the model IR2111 of the first driving chip, the second driving chip.
Further, the model TL494 of the 3rd IC chip.
Further, the model ICL8038 of the 4th IC chip.
Further, the type of the model LM7812 of the first IC chip, the 6th IC chip and No. two the 6th IC chips
Number be NE5532.
Further, the model ICL8038 of the 5th IC chip.
Beneficial effects of the present invention are：
1st, it is not higher than in input AC voltage of power under the conditions of 150 volts, it is possible to achieve the change to power frequency, frequency becomes
Dynamic scope changes between 10 hertz to 1000 hertz.
2nd, when input voltage changes between 100 volts to 200 volts, output voltage can remain less than 2% change, export phase
When stable.
3rd, input voltage is kept in the case of 100 volts, the size of output voltage can be changed, output voltage adjustable extent is
60 volts to 200 volts.
4th, add power factor correction module, the current waveform of input can be corrected to it is basically identical with voltage waveform,
Phase is the same, it is ensured that effective application of electric power, and will not pollute power network.
5th, because each module is separated, binding post is added before lifting die block, so battery can be added, in power failure etc.
Emergency power of the power no more than 2000 watts is carried out under emergency case to supply.
Brief description of the drawings
Fig. 1 is circuit of power factor correction schematic diagram.
Fig. 2 is SEPIC step-up/step-down circuits, drive circuit, PWM generation circuit diagrams.
Fig. 3 is sine wave generation circuit schematic diagram.
Fig. 4 is circuit for generating triangular wave schematic diagram.
Fig. 5 is sine PWM circuit schematic diagram.
Fig. 6 is inverter circuit schematic diagram.
Fig. 7 is auxiliary power circuit schematic diagram.
Embodiment
The sequence number of each component is corresponding with the Arabic numerals in accompanying drawing below.As first resistor corresponds to R1, first
Inductance corresponds to L1, and the 8th polar capacitor corresponds to C8.
Frequency converter of the present invention includes circuit of power factor correction, and SEPIC step-up/step-down circuits, sample circuit, PWM occurs
Circuit, sine PWM circuit, drive circuit, inverter circuit.The circuit of power factor correction and SEPIC step-up/step-down circuits
Inverter circuit is connected to after connection, triangle wave generating circuit is connected to inverter circuit after being connected with sine PWM circuit.Drive
Dynamic circuit, PWM occur circuit, SEPIC step-up/step-down circuits and interconnected two-by-two.
As shown in figure 1, the circuit of power factor correction uses UCC28019 chips and peripheral circuit（What the circuit was used
It is existing ripe circuit）, and it is sent to the SEPICSEPIC step-up/step-down circuits of next stage.
As shown in Fig. 2 SEPIC step-up/step-down circuits include the 4th resistance, the 6th nonpolar electric capacity, the 7th polar capacitor, the
Ten polar capacitors, the first inductance, the first FET, the 8th polar capacitor, the 3rd inductance, the first Schottky diode, the tenth
Two polar capacitors, the 13rd nonpolar electric capacity.The annexation of each parts is：First inductance one end connects the tenth polarity electricity
The positive pole of appearance, the other end then connects the source electrode of the first FET and the positive pole of the 8th polar capacitor, the leakage of the first FET
Pole is connected to second resistance one end, and passes through the 4th resistance eutral grounding.The 6th nonpolar electric capacity is in parallel with the 7th polar capacitor,
The point ground connection in parallel of one end, the other end is connected to the tie point of the first inductance and the tenth polar capacitor.8th polar capacitor it is negative
Pole is then connected to one end of the 3rd inductance and the positive pole of the first Schottky diode, the other end ground connection of the 3rd inductance.First Xiao
The negative pole of special based diode connects the 12nd polar capacitor positive pole, the 13rd nonpolar electric capacity one end, first resistor one end.Tenth
Two polar capacitor negative poles, the 13rd nonpolar electric capacity another end ground connection, the first resistor other end are connected to the 3rd adjustable resistance one end.
As shown in Fig. 2 drive circuit includes the second driving chip（IR2111）And its peripheral circuit, the second diode,
Nine nonpolar electric capacity, the 11st nonpolar electric capacity, second resistance.The annexation of each parts is：Second resistance is not with
One end of one FET connection is connected to the second driving chip（IR2111）The 7th port.Second diode cathode is connected to
Second driving chip（IR2111）First port, the 11st nonpolar electric capacity one end, negative pole is connected to the second driving chip
（IR2111）8th port, the 9th nonpolar electric capacity one end.The 11st nonpolar electric capacity other end is then connected to the second driving core
Piece（IR2111）3rd port is simultaneously grounded, and the 9th nonpolar electric capacity other end is then connected to the second driving chip（IR2111）
Six ports are simultaneously grounded.
As shown in Fig. 2 circuit, which occurs, for PWM includes first resistor, 3rd resistor, the 3rd IC chip U3 (TL494) and its outer
Enclose circuit, the 19th polar capacitor, the 20th nonpolar electric capacity, the 23rd nonpolar electric capacity, the 33rd nonpolar electric capacity,
First resistor, the 17th resistance, the 22nd resistance, the 23rd resistance, the 24th resistance, the 25th resistance, second
16 resistance, the 29th resistance, the 3rd slide rheostat, the 27th slide rheostat, the 32nd slide rheostat,
33 slide rheostats.The annexation of each parts is：First resistor be not connected with the first Schottky diode one
End is connected to the 3rd slide rheostat, and the 3rd slide rheostat other end ground connection, slider is connected by the 22nd resistance
To the first port of the 3rd chip.19th electric capacity point is in parallel with the 20th electric capacity point, one of point ground connection in parallel, another
Parallel connection point is connected to power supply, and it is connected to the eight, the 11 of the 3rd IC chip, ten Two-port netwerks.The second port of 3rd IC chip
The contact of the 32nd slide rheostat, a termination of the 32nd slide rheostat are connected to by the 26th resistance
Ground, the other end is connected to power supply by the 29th resistance.24th resistance connected with the 33rd nonpolar electric capacity after with
25th resistor coupled in parallel a, point in parallel is connected to the 3rd port of the 3rd IC chip, and another parallel connection point is then connected to the
The contact of 33 slide rheostats.One end ground connection of 33rd slide rheostat, the other end is then connected to the 3rd IC
14th port of chip, and it is connected to one end of the 23rd resistance.The other end of 23rd resistance is then connected to
15th port of the 3rd IC chip, and it is connected to one end and the contact of the slide rheostat of bottom 27.Described 27th slides
Dynamic rheostatic other end ground connection.23rd nonpolar electric capacity one end connects the fifth port of the 3rd IC chip, another termination
Ground.17th resistance one end is connected to the 6th port of the 3rd IC chip, other end ground connection.Wherein, first resistor and the 3rd essence
Close slide rheostat constitutes partial pressure relation, and output voltage partial pressure is fed back, and is slided with the 29th resistance and 32
The partial pressure to VCC that rheostat is constituted carries out differential amplification, forms hard closed loop, makes output stable.SEPIC step-up/step-down circuits pass through
The 32nd slide rheostat is adjusted to be adjusted output voltage.
SEPIC step-up/step-down circuits are used to voltage output carrying out inversion to inverter circuit.Including sine wave generation circuit, three
Angle wave generation circuit, sine PWM circuit, drive circuit, full bridge inverter.Full bridge inverter in the system is adopted
With four identical N-channel FETs (IRE250N) and using second order LC filter structures.
As shown in figure 3, sine wave generation circuit can use available circuit.The present embodiment has carried out individually designed including
Four IC chip U4（ICL8038）, the 31st resistance, the 34th resistance, the 35th resistance, the 36th resistance, the 3rd
Ten slide rheostats, the 38th varactor.4th the second pin of IC chip produces sine wave.The connection of each parts is closed
It is to be：31st resistance one end connects power supply, and the other end is connected to the 9th port of the 4th IC chip.34th resistance one
End connection power supply, the other end is connected to the fifth port of the 4th IC chip.35th resistance one end connects power supply, and the other end connects
It is connected to the 4th port of the 4th IC chip.30th slide rheostat one end connects power supply, and the other end connects the 36th resistance
After be grounded and be connected to the 38th varactor one end, the 38th varactor other end is connected to the 4th IC chip
The tenth port.
As shown in figure 4, circuit for generating triangular wave can use available circuit.The present embodiment has carried out individually designed, and it includes
5th IC chip (U4) ICL8038, the 48th resistance, the 49th resistance, the 50th resistance, the 51st resistance, the 4th
17 slide rheostats, the 41st nonpolar electric capacity.5th IC chip three-prong produces triangular wave.48th resistance one
End connection power supply, the other end is connected to the 9th port of the 5th IC chip.49th resistance one end connects power supply, and the other end connects
It is connected to the fifth port of the 5th IC chip.50th resistance one end connects power supply, and the other end is connected to the 4th of the 5th IC chip
Port.47th slide rheostat one end connects power supply, and the other end is connected to bottom connection by the 51st resistance eutral grounding
To the 41st nonpolar electric capacity one end, regulation head is then connected to the 8th port of the 5th IC chip.41st nonpolar electricity
The other end of appearance is then connected to the tenth port of the 5th IC chip.
As shown in figure 5, sine PWM circuit can use available circuit.The present embodiment carried out it is individually designed, including
No. one the 6th IC chip (U6) NE5532, No. two No. one the 6th IC chip (U6) NE5532, the 37th resistance, the 38th electricity
Resistance, the 39th resistance, the 40th resistance, the 41st resistance, the 42nd resistance, the 44th resistance, the 45th electricity
Resistance, the 46th resistance, the 43rd slide rheostat.Amplitude of 43rd slide rheostat to adjust sine wave, from
And adjust the output voltage after inversion.39th resistance, the 40th resistance composition series arm after with the 45th resistance,
The series arm of 46th resistance composition is in parallel, point one end connection power supply in parallel of one end, the point ground connection in parallel of the other end.One
Number the 6th IC chip (U6) NE5532 positive poles connect the output end of sine wave generation circuit by the 37th resistance, and negative pole is then
Ground connection, and No. one the 6th IC chip (U6) NE5532 output end is connected to by the 43rd slide rheostat.No. two the 6th IC
Chip (U6) NE5532 positive poles are connected to No. one the 6th IC chip (U6) NE5532 output end, negative pole by the 38th resistance
The output end of circuit for generating triangular wave is then connected by the 42nd resistance.No. two the 6th IC chip (U6) NE5532 output ends connect
The 41st resistance one end is connect, the other end of the 41st resistance then exports SPWM ripples.
As shown in fig. 6, full bridge inverter includes the first driving chip (IR2111) and its peripheral circuit, the first driving core
Piece (IR2111) and its peripheral circuit, the 3rd FET, the 4th FET, the 5th FET, the 6th FET,
16 resistance, the 20th resistance, the 15th resistance, the 4th inductance, the 5th inductance.3rd FET, the 4th FET,
Five FETs, the 6th FET composition full-bridge topologies circuit.
For full bridge inverter, due to the structure using four N-channel FETs, so needing to enter drive waveforms
Row intersects.It includes the first driving chip, the 16th resistance, the 3rd FET, the 20th resistance, the 5th FET,
Four inductance, the second driving chip, the 19th resistance, the 6th FET, the 15th resistance, the 4th FET, the 5th inductance
.Wherein, the HO waveforms of the port of the first driving chip (IR2111) the 7th output are sent to the 3rd FET by the 16th resistance
Grid, then the LO waveforms that the port of the first driving chip (IR2111) the 4th is exported by the 20th resistance are transported to the 5th
Effect pipe, the 6th port of the first driving chip（Reference point VS）The 4th inductance one end is connected to, the other end of the 4th inductance connects
It is connected to lead-out terminal.The HO waveforms of the port of second driving chip (IR2111) the 7th output are sent to the 6th by the 19th resistance
Effect pipe, the LO waveforms of the 4th port output of the second driving chip (IR2111) are sent to the 4th field-effect by the 15th resistance
Pipe, the 6th port is one end that reference point VS is connected to the 5th inductance, and the other end of the 5th inductance is connected to lead-out terminal.Full-bridge
Inverter circuit alternate conduction and pass through the exportable alternating current of second-order filter circuit.
It is preferred that, present invention additionally comprises auxiliary power circuit.As shown in fig. 7, it include rectifier bridge, the first polar capacitor,
Second polar capacitor, the 3rd nonpolar electric capacity, the first IC chip, the positive pole of quadripolarity electric capacity, the 5th nonpolar electric capacity.Its
In, the first rectifier bridge and the first polar capacitor, the second polar capacitor, the 3rd nonpolar electric capacity constitute rectifying and wave-filtering, by alternating current
Change into direct current.Wherein, the first polar capacitor, the second polar capacitor, the 3rd nonpolar electric capacity are in parallel, one end parallel connection point connection the
The positive input terminal of one rectifier bridge and the first IC chip（LM7812）First pin, other end parallel connection point the first rectifier bridge of connection
Negative input end and the first IC chip（LM7812）Second pin.Two pins of the first binding post connect the two of the first rectifier bridge
Individual output end, voltage must not exceed 20V.By the first IC chip second pin with being connected to small-power, quadripolarity electric capacity and the 5th
The point in parallel that nonpolar electric capacity constitutes parallel circuit connects the 3rd pin, and another parallel connection point is then connected to second pin simultaneously
Ground connection.3rd pin is output end, and for auxiliary supply voltage, voltage is provided for the chip for whole system and reference.
Here, the operation principle to whole frequency converter is illustrated.
The electric power of input is subjected to PFC first, by adjusting the phase of voltage and electric current, electric power can be improved
Utilization ratio；The electric power Jing Guo PFC is input in SEPIC step-up/step-down circuits again, because SEPIC lifts piezoelectricity
Road uses SEPIC circuits, realizes the seamless adjustment of voltage up-down, and it is inverse that the voltage handled well is conveyed into the progress of full-bridge system
Become.Full-bridge control section is completed by SPWM ripples, and SPWM ripples are compared generation by triangular wave and sine wave, and by IR2111 by its
Complementary wave is converted to, the break-make of full-bridge is controlled whereby, after filtering device is reduced to the electric power of sinusoidal waveform.
Frequency conversion function can be realized by the frequency of adjustment sine wave.The dutycycle and frequency of SPWM ripples are by sine wave and triangle
Ripple determines that triangular wave is carrier signal, and sine wave is control signal, and sinusoidal signal is reduced eventually through full-bridge and wave filter.
Claims (10)
1. a kind of universal frequency converter, it is characterised in that including circuit of power factor correction, SEPIC step-up/step-down circuits, sampling electricity
Circuit, sine PWM circuit, drive circuit, inverter circuit occur for road, PWM；The circuit of power factor correction and SEPIC
Inverter circuit is connected to after step-up/step-down circuit connection, triangle wave generating circuit is connected to inverse after being connected with sine PWM circuit
Become circuit；Drive circuit, PWM occur circuit, SEPIC step-up/step-down circuits and interconnected two-by-two；
The circuit of power factor correction uses UCC28019 chips and peripheral circuit；
SEPICSEPIC step-up/step-down circuits include the 4th resistance, the 6th nonpolar electric capacity, the 7th polar capacitor, the tenth polarity electricity
Appearance, the first inductance, the first FET, the 8th polar capacitor, the 3rd inductance, the first Schottky diode, the 12nd polarity electricity
Appearance, the 13rd nonpolar electric capacity；The annexation of each parts is：First inductance one end is connecting the tenth polar capacitor just
Pole, the other end then connects the source electrode of the first FET and the positive pole of the 8th polar capacitor, the drain electrode connection of the first FET
To second resistance one end, and pass through the 4th resistance eutral grounding；The 6th nonpolar electric capacity is in parallel with the 7th polar capacitor, one end
Parallel connection point ground connection, the other end is connected to the tie point of the first inductance and the tenth polar capacitor；The negative pole of 8th polar capacitor then connects
It is connected to one end of the 3rd inductance and the positive pole of the first Schottky diode, the other end ground connection of the 3rd inductance；First Schottky two
The negative pole of pole pipe connects the 12nd polar capacitor positive pole, the 13rd nonpolar electric capacity one end, first resistor one end；12nd polarity
Electric capacity negative pole, the 13rd nonpolar electric capacity another end ground connection, the first resistor other end are connected to the 3rd adjustable resistance one end；
Drive circuit includes the second driving chip and its peripheral circuit, the second diode, the 9th nonpolar electric capacity, the 11st non-pole
Property electric capacity, second resistance；The annexation of each parts is：One end connection that second resistance is not connected with the first FET
To the 7th port of the second driving chip；Second diode cathode is connected to the first port of the second driving chip, the 11st non-
Polar capacitor one end, negative pole is connected to the port of the second driving chip the 8th, the 9th nonpolar electric capacity one end；11st non-pole
The property electric capacity other end is then connected to the port of the second driving chip the 3rd and is grounded, and the 9th nonpolar electric capacity other end is then connected to
6th port of two driving chips is simultaneously grounded；
Circuit, which occurs, for PWM includes first resistor, 3rd resistor, the 3rd IC chip and its peripheral circuit, the 19th polar capacitor, the
20 nonpolar electric capacity, the 23rd nonpolar electric capacity, the 33rd nonpolar electric capacity, first resistor, the 17th resistance, second
12 resistance, the 23rd resistance, the 24th resistance, the 25th resistance, the 26th resistance, the 29th resistance,
Three slide rheostats, the 27th slide rheostat, the 32nd slide rheostat, the 33rd slide rheostat；Each zero
The annexation of part is：One end that first resistor is not connected with the first Schottky diode is connected to the 3rd slide rheostat,
The 3rd slide rheostat other end is grounded, and slider is connected to the first port of the 3rd IC chip by the 22nd resistance；
19th electric capacity point is in parallel with the 20th electric capacity point, and one of point ground connection in parallel, another parallel connection point is connected to power supply, and it connects
Be connected to the 3rd IC chip the eight, the 11, ten Two-port netwerks；The second port of 3rd IC chip is connected to by the 26th resistance
The contact of 32nd slide rheostat, one end ground connection of the 32nd slide rheostat, the other end passes through the 29th
Resistance is connected to power supply；24th resistance connected with the 33rd nonpolar electric capacity after with the 25th resistor coupled in parallel, one
Parallel connection point is connected to the 3rd port of the 3rd IC chip, and another parallel connection point is then connected to touching for the 33rd slide rheostat
Head；One end ground connection of 33rd slide rheostat, the other end is then connected to the 14th port of the 3rd IC chip, and even
It is connected to one end of the 23rd resistance；The other end of 23rd resistance is then connected to the 15th end of the 3rd IC chip
Mouthful, and it is connected to one end and the contact of the slide rheostat of bottom 27；The other end ground connection of 27th slide rheostat；
23rd nonpolar electric capacity one end connects the fifth port of the 3rd IC chip, other end ground connection；17th resistance one end is connected
To the 6th port of the 3rd IC chip, other end ground connection；
SEPIC step-up/step-down circuits include sine wave generation circuit, circuit for generating triangular wave, sine PWM circuit, driving electricity
Road, full bridge inverter；
Full bridge inverter includes the first driving chip, the 16th resistance, the 3rd FET, the 20th resistance, the 5th effect
Ying Guan, the 4th inductance, the second driving chip, the 19th resistance, the 6th FET, the 15th resistance, the 4th FET,
Five inductance；Wherein, the waveform of the port of the first driving chip the 7th output is sent to the grid of the 3rd FET by the 16th resistance
Pole, then the waveform that the port of the first driving chip the 4th is exported are transported to the 5th FET by the 20th resistance, and first drives
6th port of dynamic chip is connected to the 4th inductance one end, and the other end of the 4th inductance is connected to lead-out terminal；Second driving core
The waveform of the 7th port output of piece is sent to the 6th FET by the 19th resistance, and the 4th port of the second driving chip is defeated
The waveform gone out is sent to the 4th FET by the 15th resistance, and the 6th port is connected to one end of the 5th inductance, the 5th inductance
The other end be connected to lead-out terminal.
2. universal frequency converter as claimed in claim 1, it is characterised in that sine wave generation circuit includes the 4th IC chip, the
31 resistance, the 34th resistance, the 35th resistance, the 36th resistance, the 30th slide rheostat, the 38th become
Hold diode；The annexation of each parts is：31st resistance one end connects power supply, and the other end is connected to the 4th IC chip
The 9th port；34th resistance one end connects power supply, and the other end is connected to the fifth port of the 4th IC chip；35th
Resistance one end connects power supply, and the other end is connected to the 4th port of the 4th IC chip；30th slide rheostat one end connection electricity
Source, the other end, which is connected, to be grounded after the 36th resistance and is connected to the 38th varactor one end, the 38th transfiguration two
The pole pipe other end is connected to the tenth port of the 4th IC chip.
3. universal frequency converter as claimed in claim 1, it is characterised in that sine PWM circuit includes a 6th IC core
Piece, No. two the 6th IC cores, the 37th resistance, the 38th resistance, the 39th resistance, the 40th resistance, 40
Variable resistance is slided in one resistance, the 42nd resistance, the 44th resistance, the 45th resistance, the 46th resistance, the 43rd
Device；39th resistance, the series arm of the 40th resistance composition and connecting that the 45th resistance, the 46th resistance are constituted
Branch circuit parallel connection, point one end connection power supply in parallel of one end, the point ground connection in parallel of the other end；Number a 6th IC chip positive pole passes through
37 resistance connect the output end of sine wave generation circuit, and negative pole is then grounded, and are connected by the 43rd slide rheostat
To a 6th IC chip output end；No. two the 6th IC chip positive poles are connected to the 6th IC chip by the 38th resistance
Output end, negative pole then pass through the 42nd resistance connect circuit for generating triangular wave output end；No. two the 6th IC chip outputs
End the 41st resistance one end of connection, the other end of the 41st resistance then exports SPWM ripples.
4. universal frequency converter as claimed in claim 1, it is characterised in that circuit for generating triangular wave includes the 5th IC chip, the
It is 48 resistance, the 49th resistance, the 50th resistance, the 51st resistance, the 47th slide rheostat, the 41st non-
Polar capacitor；5th IC chip three-prong produces triangular wave；48th resistance one end connects power supply, and the other end is connected to the
9th port of five IC chips；49th resistance one end connects power supply, and the other end is connected to the fifth port of the 5th IC chip；
50th resistance one end connects power supply, and the other end is connected to the 4th port of the 5th IC chip；47th slide rheostat one
End connection power supply, the other end is connected to bottom and is connected to the 41st nonpolar electric capacity one end by the 51st resistance eutral grounding,
Regulation head is then connected to the 8th port of the 5th IC chip；The other end of 41st nonpolar electric capacity is then connected to the 5th IC cores
Tenth port of piece.
5. universal frequency converter as claimed in claim 1, it is characterised in that also including auxiliary power circuit, it include rectifier bridge,
First polar capacitor, the second polar capacitor, the 3rd nonpolar electric capacity, the first driving chip, the positive pole of quadripolarity electric capacity, the 5th
Nonpolar electric capacity；Wherein, the first polar capacitor, the second polar capacitor, the 3rd nonpolar electric capacity are in parallel, one end parallel connection point connection the
First pin of the positive input terminal of one rectifier bridge and the first driving chip, the negative input of other end parallel connection point the first rectifier bridge of connection
End and the second pin of the first driving chip；Two pins of the first binding post connect two output ends of the first rectifier bridge；Will
With being connected to small-power, quadripolarity electric capacity and the 5th nonpolar electric capacity constitute parallel circuit to first driving chip second pin
One point in parallel connects the 3rd pin, and another parallel connection point is then connected to second pin and is grounded；3rd pin is output end.
6. universal frequency converter as claimed in claim 1, it is characterised in that the first driving chip, the model of the second driving chip
For IR2111.
7. universal frequency converter as claimed in claim 1, it is characterised in that the model TL494 of the 3rd IC chip.
8. universal frequency converter as claimed in claim 2, it is characterised in that the model ICL8038 of the 4th IC chip.
9. universal frequency converter as claimed in claim 3, it is characterised in that the model LM7812 of the first IC chip, No. one
The model NE5532 of six IC chips and No. two the 6th IC chips.
10. universal frequency converter as claimed in claim 4, it is characterised in that the model ICL8038 of the 5th IC chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621261914.4U CN206349928U (en) | 2016-11-10 | 2016-11-10 | A kind of universal frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621261914.4U CN206349928U (en) | 2016-11-10 | 2016-11-10 | A kind of universal frequency converter |
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| Publication Number | Publication Date |
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| CN206349928U true CN206349928U (en) | 2017-07-21 |
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ID=59322430
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621261914.4U Withdrawn - After Issue CN206349928U (en) | 2016-11-10 | 2016-11-10 | A kind of universal frequency converter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452102A (en) * | 2016-11-10 | 2017-02-22 | 成都信息工程大学 | Frequency converter |
| CN108173359A (en) * | 2018-02-06 | 2018-06-15 | 深圳劲芯微电子有限公司 | The method and its circuit of wireless charging foreign matter are differentiated based on Q values |
-
2016
- 2016-11-10 CN CN201621261914.4U patent/CN206349928U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452102A (en) * | 2016-11-10 | 2017-02-22 | 成都信息工程大学 | Frequency converter |
| CN108173359A (en) * | 2018-02-06 | 2018-06-15 | 深圳劲芯微电子有限公司 | The method and its circuit of wireless charging foreign matter are differentiated based on Q values |
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