CN220139432U - Cigarette machine set direct current power supply device based on PLC control - Google Patents
Cigarette machine set direct current power supply device based on PLC control Download PDFInfo
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Abstract
The utility model discloses a cigarette machine set direct current power supply device based on PLC control, which comprises: the device comprises a direct current power supply unit, a detection unit and a drive control unit; the direct current power supply unit comprises a first rectifying circuit, a voltage stabilizing circuit, a current converting circuit and a chopper circuit, wherein the current converting circuit comprises a full-bridge inverter circuit, a boosting circuit and a second rectifying circuit; the input end of the first rectifying circuit is used for receiving single-phase alternating current, and the output end of the first rectifying circuit is connected with the input end of the voltage stabilizing circuit; the output end of the voltage stabilizing circuit is connected with the input end of the full-bridge inverter circuit, and the output end of the full-bridge inverter circuit is connected with the input end of the booster circuit; the output end of the boost circuit is connected with the input end of the second rectifying circuit, and the output end of the second rectifying circuit is connected with the input end of the chopper circuit; the detection unit is used for detecting the voltage and current changes of the direct-current power supply unit and transmitting the voltage and current operation parameters to the drive control unit; the drive control unit is used for driving and controlling the circuit of the direct current power supply unit.
Description
Technical Field
The utility model relates to the technical field of direct current power supplies of cigarette sets, in particular to a direct current power supply device of a cigarette set based on PLC control.
Background
At present, domestic cigarette workshops mainly adopt unmanned operation, monitor cigarette production conditions in real time through an in-factory MES system, and adjust production progress in real time according to order requirements, so that flexible control of in-factory production processes is realized. Siemens PLC is commonly used in China to control the production flow. The cigarette production is generally divided into three workshops of cut tobacco making, rolling and packaging, but the specific procedures are numerous, for example, a ZJ17 rolling and connecting machine mainly completes 12 procedures of cigarette arrangement, sizing, tipping paper cutting, rolling and connecting, quality detection and the like. Therefore, to guarantee basic production requirements, there are a lot of hardware devices.
Under the unmanned operation condition, how to ensure quality and quantity to finish the production of cigarettes, and various detection devices are indispensable. The more components, the more likely they will fail, and the more difficult they are to troubleshoot. In addition, the cost reduction and the efficiency enhancement are also important work actions of cigarette factories. How to reduce the hardware equipment used on the basis of not damaging the existing working procedures and the existing yield is a problem to be solved in the technical improvement of factories. The prior art relates to the improvement of equipment in a tobacco factory, and aims at a specific link, such as the algorithm improvement of package production or the analysis and discussion of energy saving and consumption reduction in a field, and the like, and the whole improvement of a power supply part is not seen.
Disclosure of Invention
The utility model aims to overcome the defects and shortcomings of the prior art, and provides a direct current power supply device of a cigarette making machine set based on PLC control, which is modified to correspond to different direct current power supply output values, meet the requirements of direct current equipment in different links, reduce the power supply of the direct current equipment and save more energy and have higher efficiency.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
a cigarette machine set direct current power supply device based on PLC control comprises: the device comprises a direct current power supply unit, a detection unit and a drive control unit;
the direct current power supply unit comprises a first rectifying circuit, a voltage stabilizing circuit, a current converting circuit and a chopper circuit, wherein the current converting circuit comprises a full-bridge inverter circuit, a boosting circuit and a second rectifying circuit;
the input end of the first rectifying circuit is used for receiving single-phase alternating current, and the output end of the first rectifying circuit is connected with the input end of the voltage stabilizing circuit; the output end of the voltage stabilizing circuit is connected with the input end of the full-bridge inverter circuit, and the output end of the full-bridge inverter circuit is connected with the input end of the booster circuit; the output end of the boost circuit is connected with the input end of the second rectifying circuit, and the output end of the second rectifying circuit is connected with the input end of the chopper circuit;
the detection unit comprises a voltage sensor and a current sensor and is used for detecting the voltage and current changes of the direct-current power supply unit and transmitting real-time operation parameters of the voltage and the current to the drive control unit;
the driving control unit comprises a controller and a driving circuit, wherein the controller is used for sending a control instruction to the driving circuit, and the driving circuit is used for controlling the on and off of the switching device of the direct current power supply unit.
Preferably, the input of the direct current power supply unit is power grid alternating current, and the output is divided into three paths: the first path is directly output by a voltage stabilizing circuit to output common direct current; the second path outputs from the second rectifying circuit, outputs the high-voltage direct current; the third path is output from the chopper circuit and outputs pulse direct current.
Preferably, the working voltage of the direct current power supply unit is continuously adjustable between 0 and 750V, the working current is continuously adjustable between 0 and 150A, and a rectangular square wave with the frequency of 0 to 20KHz is output.
Preferably, the first rectifying circuit is a single-phase uncontrollable rectifying circuit, the single-phase uncontrollable rectifying circuit including:
a first diode, a second diode, a third diode, a fourth diode, a first inductor, a first capacitor, a second capacitor, a first resistor and a second resistor;
the anode of the first diode is connected with the cathode of the fourth diode;
the anode of the second diode is connected with the cathode of the third diode;
the negative electrode of the first capacitor is connected with the positive electrode of the second capacitor, and the second end of the first resistor is connected with the first end of the second resistor;
the cathode of the first diode is connected to the cathode of the second diode, the cathode of the second diode is connected to the first end of the first inductor, the second end of the first inductor is connected to the positive electrode of the first capacitor, the positive electrode of the first capacitor is connected to the first end of the first resistor, and the first end of the first resistor is the first output end of the single-phase uncontrollable rectifying circuit;
the anode of the fourth diode is connected to the anode of the third diode, the anode of the third diode is connected to the cathode of the second capacitor, the cathode of the second capacitor is connected to the second end of the second resistor, and the second end of the second resistor is the second output end of the single-phase uncontrollable rectifying circuit.
Preferably, the voltage stabilizing circuit includes:
the voltage stabilizer, the third resistor, the fourth resistor, the fifth resistor and the third capacitor;
the first end of the voltage stabilizer is a first input end of the voltage stabilizing circuit, the second end of the voltage stabilizer is connected with the first end of the third resistor, the third end of the voltage stabilizer is connected with the first end of the fourth resistor, and the second end of the third resistor is connected with the first end of the fourth resistor;
the first end of the third resistor is connected with the first end of the third capacitor, the first end of the third capacitor is connected with the first end of the fifth resistor, and the first end of the fifth resistor is the first output end of the voltage stabilizing circuit;
the second end of the fourth resistor is a second input end of the voltage stabilizing circuit and is connected with the second end of the third capacitor, the second end of the third capacitor is connected to the second end of the fifth resistor, and the second end of the fifth resistor is a second output end of the voltage stabilizing circuit.
Preferably, the full-bridge inverter circuit adopts a single-phase full-bridge inverter circuit, and the single-phase full-bridge inverter circuit comprises:
a fourth capacitor, a fifth diode, a sixth diode, a seventh diode, an eighth diode, a first N-type insulated gate bipolar transistor, a second N-type insulated gate bipolar transistor, a third N-type insulated gate bipolar transistor, and a fourth N-type insulated gate bipolar transistor;
the second end of the fourth capacitor is connected with the first end of the fifth capacitor;
the anode of the fifth diode is connected with the cathode of the sixth diode, the emitter of the first N-type insulated gate bipolar transistor is connected with the collector of the second N-type insulated gate bipolar transistor and is connected to the anode of the fifth diode, and the first output end of the single-phase full-bridge inverter circuit is formed;
an emitter of the third N-type insulated gate bipolar transistor is connected with a collector of the fourth N-type insulated gate bipolar transistor; the anode of the seventh diode is connected with the cathode of the eighth diode and is connected to the emitter of the third N-type insulated gate bipolar transistor, and the anode of the seventh diode is a second output end of the single-phase full-bridge inverter circuit;
the cathode of the seventh diode is connected to the collector of the third N-type insulated gate bipolar transistor, the collector of the third N-type insulated gate bipolar transistor is connected to the cathode of the fifth diode, the cathode of the fifth diode is connected to the collector of the first N-type insulated gate bipolar transistor, and the collector of the first N-type insulated gate bipolar transistor is connected with the first end of the fourth capacitor and is the first input end of the single-phase full-bridge inverter circuit;
the anode of the eighth diode is connected to the emitter of the fourth N-type insulated gate bipolar transistor, the emitter of the fourth N-type insulated gate bipolar transistor is connected to the anode of the sixth diode, the anode of the sixth diode is connected to the emitter of the second N-type insulated gate bipolar transistor, and the emitter of the second N-type insulated gate bipolar transistor is connected with the second end of the fifth capacitor and is the second input end of the single-phase full-bridge inverter circuit.
Preferably, the booster circuit includes: a high frequency transformer and a sixth capacitor;
the first end of the primary coil of the high-frequency transformer is connected with the second end of the sixth capacitor, and the first end of the sixth capacitor is a first input end of the booster circuit;
the first end of the secondary coil of the high-frequency transformer is connected with the first input end of the second rectifying circuit, and the second end of the secondary coil of the high-frequency transformer is connected with the second input end of the second rectifying circuit.
Preferably, the second rectifying circuit includes:
a seventh capacitor, a sixth resistor, a ninth diode, an eighth capacitor, a seventh resistor, a twelfth diode, a ninth capacitor, an eighth resistor, an eleventh diode, a tenth capacitor, a ninth resistor, and a twelfth diode;
the seventh capacitor and the sixth resistor are connected in series and then connected with the ninth diode in parallel;
the ninth capacitor and the eighth resistor are connected in series and then connected with the eleventh diode in parallel;
the first end of the seventh capacitor is connected to the cathode of the ninth diode, the cathode of the ninth diode is connected to the first end of the ninth capacitor, and one end of the ninth capacitor is connected to the cathode of the eleventh diode and is the first output end of the second rectifying circuit;
the eighth capacitor is connected with the seventh resistor in series, the tenth capacitor and the ninth resistor are connected in series, the first end of the eighth capacitor is connected with the cathode of the twelfth diode, the cathode of the twelfth diode is connected with the first end of the tenth capacitor, and the first end of the tenth capacitor is connected with the cathode of the twelfth diode; the second end of the seventh resistor is connected to the anode of the twelfth electrode tube, the anode of the twelfth electrode tube is connected with the second end of the ninth resistor, and the second end of the ninth resistor is connected with the anode of the twelfth diode;
the anode of the ninth diode is a first input end of the second rectifying circuit and is connected to the cathode of the twelfth diode; the anode of the eleventh diode, which is the second input terminal of the second rectifying circuit, is connected to the cathode of the twelfth diode.
Preferably, the chopper circuit includes:
a second inductor, a third inductor, a fifth N-type insulated gate bipolar transistor, a thirteenth diode, a fourteenth diode, an eleventh capacitor, a sixth N-type insulated gate bipolar transistor and a fifteenth diode;
the cathode of the thirteenth diode is connected with the collector of the fifth N-type insulated gate bipolar transistor, and the anode of the thirteenth diode is connected with the emitter of the fifth N-type insulated gate bipolar transistor;
an anode of the fifteenth diode is connected with a collector of the sixth N-type insulated gate bipolar transistor, and a cathode of the fifteenth diode is connected with an emitter of the sixth N-type insulated gate bipolar transistor;
the second end of the second inductor is respectively connected with the collector of the fifth N-type insulated gate bipolar transistor and the anode of the fourteenth diode, and the cathode of the fourteenth diode is respectively connected with the collector of the sixth N-type insulated gate bipolar transistor and the first end of the eleventh capacitor; an emitter of the sixth N-type insulated gate bipolar transistor is connected with a first end of a third inductor, and a second end of the third inductor is a first output end of the chopper circuit; an emitter of the fifth N-type insulated gate bipolar transistor is connected with the second end of the eleventh capacitor and is a second output end of the chopper circuit.
Compared with the prior art, the utility model carries out the transformation of the direct current power supply device on the basis of the original equipment so as to correspond to different direct current power supply output values and meet the requirements of the direct current equipment in different links; the power supply control and the production link are combined, so that the energy is saved, the power supply of the direct current equipment is reduced, and a foundation is laid for upgrading and reforming the equipment in the factory.
Drawings
Fig. 1 is a schematic block diagram of a cigarette making machine set direct current power supply device based on PLC control.
Fig. 2 is a schematic diagram of a dc power supply unit.
Fig. 3 is a schematic diagram of a first rectifying circuit structure.
FIG. 4 is a schematic diagram of a voltage stabilizing circuit.
Fig. 5 is a schematic diagram of a full-bridge inverter circuit structure.
Fig. 6 is a schematic diagram of the structure of the boost circuit and the second rectifying circuit.
Fig. 7 is a schematic diagram of a chopper circuit.
Detailed Description
The utility model further provides a cigarette machine set direct-current power supply device based on PLC control by combining the drawings and the specific embodiments.
Referring to fig. 1 and 2, the utility model discloses a cigarette making machine set direct current power supply device based on PLC control, comprising: the device comprises a direct current power supply unit, a detection unit and a drive control unit;
the direct current power supply unit comprises a first rectifying circuit, a voltage stabilizing circuit, a current converting circuit and a chopper circuit, wherein the current converting circuit comprises a full-bridge inverter circuit, a boosting circuit and a second rectifying circuit;
the input end of the first rectifying circuit is used for receiving single-phase alternating current, and the output end of the first rectifying circuit is connected with the input end of the voltage stabilizing circuit; the output end of the voltage stabilizing circuit is connected with the input end of the full-bridge inverter circuit, and the output end of the full-bridge inverter circuit is connected with the input end of the booster circuit; the output end of the boost circuit is connected with the input end of the second rectifying circuit, and the output end of the second rectifying circuit is connected with the input end of the chopper circuit;
the detection unit comprises a voltage sensor and a current sensor and is used for detecting the voltage and current changes of the direct-current power supply unit and transmitting real-time operation parameters of the voltage and the current to the drive control unit;
the driving control unit comprises a controller and a driving circuit, wherein the controller is used for sending a control instruction to the driving circuit, and the driving circuit is used for controlling the on and off of the switching device of the direct current power supply unit.
In the embodiment, the Siemens PLC S7-1500 is used as a controller and is matched with the existing equipment in the factory, so that additional purchase is not needed, and the improvement is only needed on the basis of the existing equipment. The pulse power supply is controlled through the controller PLC, so that the output of direct-current voltage is realized, and the power supply of different direct-current electric equipment is completed.
After passing through a full-bridge inverter circuit, a high-frequency booster circuit, a double rectification circuit and a chopper circuit which are formed by an uncontrollable rectification circuit and an IGBT (Insulated Gate Bipolar Transistor ), the direct-current power supply unit outputs direct-current pulse power supplies with different voltage grades.
Necessary detection points are arranged in the direct current power supply unit, and the change of voltage and current is detected, so that the output direct current meets the requirements of direct current electric equipment. The controller sends control instructions to the driving circuit of the switching device and the electromagnetic valve. The driving circuit controls the on and off of the switching device to control the circuit through controlling transistors in the rectifying circuit, the inverting circuit, the boosting circuit and the chopper circuit, and the output of power supplies with different voltage classes is completed. The cigarette machine set direct current power supply device based on PLC control not only is suitable for common direct current equipment in cigarette production workshops, such as various detection devices, display devices and warning devices, but also is suitable for the requirements of various direct current motors and high-voltage electric equipment.
DC power supply unit
Referring to fig. 2, the input of the dc power supply unit is ac power of the power grid, and the output is divided into three paths: first U 01 Directly output by the voltage stabilizing circuit to output common direct current; second U 02 Outputting from the second rectifying circuit, outputting a stable high-voltage direct current; third U 03 The output of the chopper circuit is pulsed direct current. The three paths of outputs can realize power supply to different direct current devices.
The working voltage of the direct current power supply unit is continuously adjustable at 0-750V, the working current is continuously adjustable at 0-150A, the output of the square wave is approximately rectangular at 0-20 KHz, and the duty ratio is adjustable.
The direct current power supply unit may include a voltage transformation circuit, a rectification circuit, an LC filter circuit, and a voltage stabilizing circuit. The voltage transformation circuit can be omitted according to specific voltage class requirements, and can meet the requirements of voltage boosting and voltage reducing on the basis of not changing the alternating current frequency according to the voltage class requirements of electric equipment.
First rectifying circuit
Referring to fig. 3, the first rectification circuit is a single-phase uncontrollable rectification circuit, and the single-phase uncontrollable rectification circuit includes:
first diode VD 1 Second diode VD 2 Third diode VD 3 Fourth diode VD 4 First inductor L 1 First capacitor C 1 A second capacitor C 2 A first resistor R 1 And a second resistor R 2 ；
First diode VD 1 Anode of (d) and fourth diode VD 4 Is connected with the cathode of the battery; second diode VD 2 Anode of (d) and third diode VD 3 Is connected with the cathode of the battery;
first capacitor C 1 And a second capacitor C 2 A first resistor R 1 And a second resistor R 2 Is connected to the first end of the housing;
first diode VD 1 Is connected to the second diode VD 2 Cathode of the second diode VD 2 Is connected to the first inductance L 1 First inductor L 1 Is connected to the first capacitor C 1 Positive electrode of the first capacitor C 1 Is connected to the first resistor R 1 A first resistor R 1 The first end of the (a) is a first output end of the single-phase uncontrollable rectifying circuit;
fourth diode VD 4 Is connected to the third diode VD 3 Anode of the third diode VD 3 Is connected to the second capacitor C 2 A negative electrode of a second capacitor C 2 Is connected to the second resistor R 2 A second resistor R 2 The second end of the single-phase uncontrollable rectifying circuit is a second output end of the single-phase uncontrollable rectifying circuit.
The first rectification circuit adopts a LC filtering single-phase uncontrollable rectification circuit, and adopts four diodes to complete rectification, wherein VD 1 、VD 2 As a common cathode group, VD 3 、VD 4 The common cathode and the common anode are respectively in a conducting state and cannot be positioned on the same bridge arm at each moment, so that each diode is conducted for 1/2 period, and the conducting sequence is VD 1 →VD 3 →VD 2 →VD 4 . The input is single-phase alternating current, the pulse frequency of the direct current output by the rectifying circuit is 100Hz, and the output direct current can be ensured to be smoother by connecting the RC filter loop behind the rectifying bridge.
According to the connection method in fig. 3, the input single-phase alternating-current power frequency electricity is as follows:
wherein U is 2 After rectification, the output voltage average value obtained is U O ＝0.9U 2 。
Voltage stabilizing circuit
Referring to fig. 4, the voltage stabilizing circuit includes: voltage stabilizer, third resistor R 3 Fourth resistor R 4 Fifth resistor R 5 And a third capacitor C 3 ；
The first end of the voltage stabilizer is a first input end of the voltage stabilizing circuit, the second end of the voltage stabilizer and a third resistor R 3 The third end of the voltage stabilizer is connected with the fourth resistor R 4 A third resistor R connected to the first end of 3 Second end and fourth resistor R 4 Is connected to the first end of the housing;
third resistor R 3 And a third capacitor C 3 A third capacitor C connected to the first end of 3 Is connected to the fifth resistor R 5 A fifth resistor R 5 The first end of the voltage stabilizing circuit is a first output end of the voltage stabilizing circuit;
fourth resistor R 4 Is stable at the second end ofA second input terminal of the voltage circuit and a third capacitor C 3 A third capacitor C connected to the second end of 3 Is connected to the fifth resistor R 5 A second end of the resistor R 5 The second end of the voltage stabilizing circuit is a second output end of the voltage stabilizing circuit.
The voltage stabilizing circuit adopts a CW317 type integrated voltage stabilizer to realize stable output of voltage. By varying R 3 、R 4 To output different voltages, so that R during actual use 3 、R 4 The adjustable resistor can be set, the resistance value can be adjusted through the PLC, and the output of different direct-current voltages is realized. The output voltage is U 01 Can meet the requirements of various detection devices, display devices, warning devices and lighting equipment in cigarette production workshops.
Current conversion circuit
The direct-current stable voltage output by the first path of the direct-current power supply unit cannot meet the requirements of some high-voltage direct-current equipment, so that the direct-current power supply device also needs to boost. The voltage level of the direct current power supply can be increased only by adopting an alternating current transformer after inversion, so that the utility model adopts an isolated direct current-direct current converter circuit, an alternating current link is added in the middle, and the basic circuit structure of the direct current power supply comprises an inversion circuit, a boosting circuit and a rectifying circuit. The booster circuit adopts a high-frequency voltage device, which can realize the function of isolating the input end from the output end and avoid electromagnetic interference.
Full-bridge inverter circuit
Referring to fig. 5, the full-bridge inverter circuit adopts a single-phase full-bridge inverter circuit, and the single-phase full-bridge inverter circuit includes:
fourth capacitor C 4 Fifth capacitor C 5 Fifth diode VD 5 Sixth diode VD 6 Seventh diode VD 7 Eighth diode VD 8 First N-type insulated gate bipolar transistor V 1 Second N-type insulated gate bipolar transistor V 2 Third N-type insulated gate bipolar transistor V 3 And a fourth N-type insulated gate bipolar transistor V 4 ；
Fourth capacitor C 4 Is the first of (2)Two ends and a fifth capacitor C 5 Is connected to the first end of the housing;
fifth diode VD 5 Anode of (d) and sixth diode VD 6 A first N-type insulated gate bipolar transistor V 1 Emitter of (c) and second N-type insulated gate bipolar transistor V 2 Is connected to the collector of the fifth diode VD 5 The anode of the single-phase full-bridge inverter circuit is a first output end;
third N-type insulated gate bipolar transistor V 3 Emitter of (c) and fourth N-type insulated gate bipolar transistor V 4 Is connected with the collector electrode; seventh diode VD 7 Anode of (c) and eighth diode VD 8 Is connected to the cathode of the third N-type insulated gate bipolar transistor V 3 The second output end of the single-phase full-bridge inverter circuit is arranged on the emitter of the (a);
seventh diode VD 7 Is connected to a third N-type insulated gate bipolar transistor V 3 Collector of the third N-type insulated gate bipolar transistor V 3 Is connected to the fifth diode VD 5 Cathode of fifth diode VD 5 Is connected to the first N-type insulated gate bipolar transistor V 1 A first N-type insulated gate bipolar transistor V 1 Collector of (C) and fourth capacitor C 4 Is connected with the first end of the single-phase full-bridge inverter circuit;
eighth diode VD 8 Is connected to the fourth N-type insulated gate bipolar transistor V 4 Emitter of fourth N-type insulated gate bipolar transistor V 4 Is connected to the sixth diode VD 6 Anode, sixth diode VD 6 Is connected to a second N-type insulated gate bipolar transistor V 2 Emitter of second N-type insulated gate bipolar transistor V 2 Emitter and fifth capacitance C of (C) 5 Is a second input end of the single-phase full-bridge inverter circuit.
As shown in fig. 5, the single-phase full-bridge inverter circuit comprises four bridge arms formed by four IGBTs, wherein V 1 And V 4 Is group A, V 2 And V 3 The model is B group and C group 4 And C 5 The direct current side input end is connected in series and mainly used for buffering nonfunctional quantity and stabilizing voltage. In the working process of the single-phase full-bridge inverter circuit, the A group and the B group are alternately conducted, and are respectively conducted for 180 degrees in one period, so that direct current can be converted into alternating current, and the frequency of output alternating current can be adjusted by changing the frequency of IGBT exchange. Each IGBT is connected in parallel with a diode, and different IGBTs are conducted through control of an IGBT driving circuit, V 1 And V 4 If the flow is on, uo is left negative, right positive, V 2 And V 3 The general rule is left positive and right negative, voltage output in different directions is realized, and DC is changed into AC, so that inversion is realized.
The generated alternating voltage has complex components, and for the convenience of calculation, the amplitude of the fundamental wave is taken as the value of the output voltage
For inverter circuits, it is necessary to avoid that two IGBTs on the same half-bridge arm are turned on simultaneously, such as V 1 And V 2 The tubes being simultaneously conductive, or V 3 And V 4 The tubes conduct simultaneously. Therefore, the mutual conduction time needs to be strictly controlled, so that the damage to the circuit is avoided.
Boost circuit
Referring to fig. 6, the booster circuit includes: high-frequency transformer T 1 And a sixth capacitance C 6 ；
High-frequency transformer T 1 A first end of the primary winding and a sixth capacitor C 6 A sixth capacitor C connected to the second end of 6 Is the first input end of the boost circuit;
high-frequency transformer T 1 A high-frequency transformer T connected to the first end of the secondary winding of the second rectifier circuit 1 The second end of the secondary coil of the transformer is connected with the second input end of the second rectifying circuit.
As shown in fig. 6, a high-frequency transformer T is used 1 Realizing voltage rise and avoiding adoption of the second rectifying circuit on the input sideThe power frequency transformer can effectively reduce the size of the whole device, save space and reduce the loss of energy. The voltage output by the full-bridge inverter circuit contains odd harmonics, which can affect the subsequent circuits. An LC filter circuit is adopted to realize the suppression of harmonic waves, and a high-frequency transformer T is adopted 1 Is used as an inductance coil and is connected with a capacitor C 6 The filter circuits are formed in series. High-frequency transformer T 1 Can realize isolation and boosting, and the front end of the device is connected with a capacitor C in series 6 The transformer core can play a role in isolating direct current and avoid saturation caused by magnetization of the transformer core.
Second rectifying circuit
Referring to fig. 6, the second rectifying circuit includes: seventh capacitor C 7 Sixth resistor R 6 Ninth diode VD 9 Eighth capacitor C 8 Seventh resistor R 7 Twelfth pole tube VD 10 Ninth capacitor C 9 Eighth resistor R 8 Eleventh diode VD 11 Tenth capacitor C 10 Ninth resistor R 9 And a twelfth diode VD 12 ；
Seventh capacitor C 7 And a sixth resistor R 6 Connected in series with a ninth diode VD 9 Connected in parallel; ninth capacitor C 9 And an eighth resistor R 8 Series-connected with eleventh diode VD 11 Connected in parallel;
seventh capacitor C 7 Is connected to the ninth diode VD 9 A cathode of a ninth diode VD 9 Is connected to the ninth capacitor C 9 A ninth capacitor C 9 Is connected to the eleventh diode VD 11 The cathode of the second rectifying circuit is a first output end of the second rectifying circuit;
eighth capacitor C 8 And a seventh resistor R 7 A tenth capacitor C connected in series 10 And a ninth resistor R 9 Series connection of eighth capacitor C 8 Is connected to the twelfth pole tube VD 10 A twelfth electrode tube VD 10 Is connected to the tenth capacitor C 10 A tenth capacitor C 10 Is connected with the first end of (a)To the twelfth diode VD 12 A cathode of (a); seventh resistor R 7 Is connected to the twelfth pole VD 10 Anode of twelfth electrode tube and ninth resistor R 9 A ninth resistor R connected to the second end of 9 And a twelfth diode VD 12 Is connected with the anode of the battery;
ninth diode VD 9 Is a first input terminal of the second rectifying circuit, is connected to the twelfth pole tube VD 10 A cathode of (a); eleventh diode VD 11 Is the second input terminal of the second rectifying circuit, is connected to the twelfth diode VD 12 Is provided.
By connecting the two rectifying circuits in series, the double rectification is realized, and the output voltage value can be improved. And each bridge arm of the second rectifying circuit is connected with an RC isolation absorption loop in parallel, wherein the resistance R is 100 omega, and the capacitance C is 0.1 mu F. The second rectifying circuit can output U o2 High voltage DC power, voltage level ratio U o1 The device is higher, is suitable for the requirements of high-voltage direct-current equipment such as various direct-current motors and high-voltage electric equipment in cigarette production workshops, and can also meet the requirements of common high-voltage equipment such as detection devices, display devices, warning devices and lighting equipment.
Chopper circuit
Referring to fig. 7, the chopper circuit includes: second inductance L 2 Third inductance L 3 Fifth N-type insulated gate bipolar transistor V 5 Thirteenth diode VD 13 Fourteenth diode VD 14 Eleventh capacitor C 11 Sixth N-type insulated gate bipolar transistor V 6 And a fifteenth diode VD 15 ；
Thirteenth diode VD 13 Cathode of (a) and fifth N-type insulated gate bipolar transistor V 5 Collector connection, thirteenth diode VD 13 Anode of (c) and fifth N-type insulated gate bipolar transistor V 5 Emitter connection of (a);
fifteenth diode VD 15 Anode of (c) and sixth N-type insulated gate bipolar transistor V 6 Is connected with the collector of the fifteenth diode VD 15 Cathode of (2)And a sixth N-type insulated gate bipolar transistor V 6 Emitter connection of (a);
second inductance L 2 And the second ends of the fifth N-type insulated gate bipolar transistor V respectively 5 Collector of fourteenth diode VD 14 Is connected with the anode of the fourteenth diode VD 14 Respectively with the cathode of the sixth N-type insulated gate bipolar transistor V 6 Collector, eleventh capacitor C 11 Is connected to the first end of the housing; sixth N-type insulated gate bipolar transistor V 6 Emitter and third inductance L of (2) 3 Is connected with the first end of the third inductor L 3 The second end of the chopper circuit is a first output end of the chopper circuit; fifth N-type insulated gate bipolar transistor V 5 Emitter and eleventh capacitance C of (C) 11 Is a second output terminal of the chopper circuit.
The direct current output from the converter circuit can be converted into a pulse power supply through a chopper circuit and is supplied to direct current equipment. As shown in fig. 7, the chopper circuit is realized by two IGBTs, and each IGBT is also connected in parallel with a diode, so that the normal operation of the chopper circuit is ensured. The duty ratio alpha or the frequency f of the output pulse power supply can be adjusted by controlling the switch of different IGBTs. Wherein L is 2 To boost the voltage, the voltage value of the output end can be increased in the process of storing energy and releasing energy, C 11 The voltage at two ends cannot be suddenly changed, and the two voltages can realize the boosting function under the combined action.
The driving circuit of the IGBT is controlled by setting the frequency of the pulse power supply in the PLC, so that the control of the switching state of the IGBT is realized. Control of the pulse period T and the pulse voltage duty cycle a can be achieved by controlling two different IGBTs. As shown in FIG. 7, by applying a force to V therein 5 Is adjusted by a driving circuit to realize the change of T; by V pair 6 And the adjustment of the driving circuit realizes the change of alpha. Before outputting the DC pulse power supply, the DC pulse power supply passes through an inductor L 3 The current mutation is prevented, and damage to electric equipment is prevented. The output of the chopper circuit is U o3 The output of the pulse power supply is realized, and the requirements of related electric equipment are met.
The foregoing description is directed to the preferred embodiments of the present utility model, but the embodiments are not intended to limit the scope of the utility model, and all equivalent changes or modifications made under the technical spirit of the present utility model should be construed to fall within the scope of the present utility model.
Claims (9)
1. A cigarette machine set direct current power supply device based on PLC control is characterized by comprising: the device comprises a direct current power supply unit, a detection unit and a drive control unit;
the direct current power supply unit comprises a first rectifying circuit, a voltage stabilizing circuit, a current converting circuit and a chopper circuit, wherein the current converting circuit comprises a full-bridge inverter circuit, a boosting circuit and a second rectifying circuit;
the input end of the first rectifying circuit is used for receiving single-phase alternating current, and the output end of the first rectifying circuit is connected with the input end of the voltage stabilizing circuit; the output end of the voltage stabilizing circuit is connected with the input end of the full-bridge inverter circuit, and the output end of the full-bridge inverter circuit is connected with the input end of the booster circuit; the output end of the boost circuit is connected with the input end of the second rectifying circuit, and the output end of the second rectifying circuit is connected with the input end of the chopper circuit;
the detection unit comprises a voltage sensor and a current sensor and is used for detecting the voltage and current changes of the direct-current power supply unit and transmitting real-time operation parameters of the voltage and the current to the drive control unit;
the driving control unit comprises a controller and a driving circuit, wherein the controller is used for sending a control instruction to the driving circuit, and the driving circuit is used for controlling the on and off of the switching device of the direct current power supply unit.
2. The PLC control-based direct current power supply device for a cigarette making machine set according to claim 1, wherein the input of the direct current power supply unit is grid alternating current, and the output is divided into three paths: the first path is directly output by a voltage stabilizing circuit to output common direct current; the second path outputs from the second rectifying circuit, outputs the high-voltage direct current; the third path is output from the chopper circuit and outputs pulse direct current.
3. The direct current power supply device of the cigarette making machine set based on the PLC control according to claim 1, wherein the working voltage of the direct current power supply unit is continuously adjustable between 0 and 750V, the working current is continuously adjustable between 0 and 150A, and a rectangular square wave with the frequency of 0 to 20KHz is output.
4. The PLC control-based cigarette making machine direct current power supply device of claim 1, wherein the first rectifying circuit is a single-phase uncontrollable rectifying circuit, the single-phase uncontrollable rectifying circuit comprising:
a first diode, a second diode, a third diode, a fourth diode, a first inductor, a first capacitor, a second capacitor, a first resistor and a second resistor;
the anode of the first diode is connected with the cathode of the fourth diode;
the anode of the second diode is connected with the cathode of the third diode;
the negative electrode of the first capacitor is connected with the positive electrode of the second capacitor, and the second end of the first resistor is connected with the first end of the second resistor;
the cathode of the first diode is connected to the cathode of the second diode, the cathode of the second diode is connected to the first end of the first inductor, the second end of the first inductor is connected to the positive electrode of the first capacitor, the positive electrode of the first capacitor is connected to the first end of the first resistor, and the first end of the first resistor is the first output end of the single-phase uncontrollable rectifying circuit;
the anode of the fourth diode is connected to the anode of the third diode, the anode of the third diode is connected to the cathode of the second capacitor, the cathode of the second capacitor is connected to the second end of the second resistor, and the second end of the second resistor is the second output end of the single-phase uncontrollable rectifying circuit.
5. The PLC control-based cigarette making machine direct current power supply device of claim 1, wherein the voltage stabilizing circuit comprises:
the voltage stabilizer, the third resistor, the fourth resistor, the fifth resistor and the third capacitor;
the first end of the voltage stabilizer is a first input end of the voltage stabilizing circuit, the second end of the voltage stabilizer is connected with the first end of the third resistor, the third end of the voltage stabilizer is connected with the first end of the fourth resistor, and the second end of the third resistor is connected with the first end of the fourth resistor;
the first end of the third resistor is connected with the first end of the third capacitor, the first end of the third capacitor is connected with the first end of the fifth resistor, and the first end of the fifth resistor is the first output end of the voltage stabilizing circuit;
the second end of the fourth resistor is a second input end of the voltage stabilizing circuit and is connected with the second end of the third capacitor, the second end of the third capacitor is connected to the second end of the fifth resistor, and the second end of the fifth resistor is a second output end of the voltage stabilizing circuit.
6. The PLC control-based cigarette making machine direct current power supply device of claim 1, wherein the full-bridge inverter circuit employs a single-phase full-bridge inverter circuit, the single-phase full-bridge inverter circuit comprising:
a fourth capacitor, a fifth diode, a sixth diode, a seventh diode, an eighth diode, a first N-type insulated gate bipolar transistor, a second N-type insulated gate bipolar transistor, a third N-type insulated gate bipolar transistor, and a fourth N-type insulated gate bipolar transistor;
the second end of the fourth capacitor is connected with the first end of the fifth capacitor;
the anode of the fifth diode is connected with the cathode of the sixth diode, the emitter of the first N-type insulated gate bipolar transistor is connected with the collector of the second N-type insulated gate bipolar transistor and is connected to the anode of the fifth diode, and the first output end of the single-phase full-bridge inverter circuit is formed;
an emitter of the third N-type insulated gate bipolar transistor is connected with a collector of the fourth N-type insulated gate bipolar transistor; the anode of the seventh diode is connected with the cathode of the eighth diode and is connected to the emitter of the third N-type insulated gate bipolar transistor, and the anode of the seventh diode is a second output end of the single-phase full-bridge inverter circuit;
the cathode of the seventh diode is connected to the collector of the third N-type insulated gate bipolar transistor, the collector of the third N-type insulated gate bipolar transistor is connected to the cathode of the fifth diode, the cathode of the fifth diode is connected to the collector of the first N-type insulated gate bipolar transistor, and the collector of the first N-type insulated gate bipolar transistor is connected with the first end of the fourth capacitor and is the first input end of the single-phase full-bridge inverter circuit;
the anode of the eighth diode is connected to the emitter of the fourth N-type insulated gate bipolar transistor, the emitter of the fourth N-type insulated gate bipolar transistor is connected to the anode of the sixth diode, the anode of the sixth diode is connected to the emitter of the second N-type insulated gate bipolar transistor, and the emitter of the second N-type insulated gate bipolar transistor is connected with the second end of the fifth capacitor and is the second input end of the single-phase full-bridge inverter circuit.
7. The PLC control-based cigarette making machine direct current power supply device of claim 1, wherein the boost circuit comprises: a high frequency transformer and a sixth capacitor;
the first end of the primary coil of the high-frequency transformer is connected with the second end of the sixth capacitor, and the first end of the sixth capacitor is a first input end of the booster circuit;
the first end of the secondary coil of the high-frequency transformer is connected with the first input end of the second rectifying circuit, and the second end of the secondary coil of the high-frequency transformer is connected with the second input end of the second rectifying circuit.
8. The PLC control-based cigarette making machine direct current power supply device of claim 1, wherein the second rectifying circuit comprises:
a seventh capacitor, a sixth resistor, a ninth diode, an eighth capacitor, a seventh resistor, a twelfth diode, a ninth capacitor, an eighth resistor, an eleventh diode, a tenth capacitor, a ninth resistor, and a twelfth diode;
the seventh capacitor and the sixth resistor are connected in series and then connected with the ninth diode in parallel;
the ninth capacitor and the eighth resistor are connected in series and then connected with the eleventh diode in parallel;
the first end of the seventh capacitor is connected to the cathode of the ninth diode, the cathode of the ninth diode is connected to the first end of the ninth capacitor, and one end of the ninth capacitor is connected to the cathode of the eleventh diode and is the first output end of the second rectifying circuit;
the eighth capacitor is connected with the seventh resistor in series, the tenth capacitor and the ninth resistor are connected in series, the first end of the eighth capacitor is connected with the cathode of the twelfth diode, the cathode of the twelfth diode is connected with the first end of the tenth capacitor, and the first end of the tenth capacitor is connected with the cathode of the twelfth diode; the second end of the seventh resistor is connected to the anode of the twelfth electrode tube, the anode of the twelfth electrode tube is connected with the second end of the ninth resistor, and the second end of the ninth resistor is connected with the anode of the twelfth diode;
the anode of the ninth diode is a first input end of the second rectifying circuit and is connected to the cathode of the twelfth diode; the anode of the eleventh diode, which is the second input terminal of the second rectifying circuit, is connected to the cathode of the twelfth diode.
9. The PLC control-based cigarette making machine direct current power supply device according to claim 1, wherein the chopper circuit comprises:
a second inductor, a third inductor, a fifth N-type insulated gate bipolar transistor, a thirteenth diode, a fourteenth diode, an eleventh capacitor, a sixth N-type insulated gate bipolar transistor and a fifteenth diode;
the cathode of the thirteenth diode is connected with the collector of the fifth N-type insulated gate bipolar transistor, and the anode of the thirteenth diode is connected with the emitter of the fifth N-type insulated gate bipolar transistor;
an anode of the fifteenth diode is connected with a collector of the sixth N-type insulated gate bipolar transistor, and a cathode of the fifteenth diode is connected with an emitter of the sixth N-type insulated gate bipolar transistor;
the second end of the second inductor is respectively connected with the collector of the fifth N-type insulated gate bipolar transistor and the anode of the fourteenth diode, and the cathode of the fourteenth diode is respectively connected with the collector of the sixth N-type insulated gate bipolar transistor and the first end of the eleventh capacitor; an emitter of the sixth N-type insulated gate bipolar transistor is connected with a first end of a third inductor, and a second end of the third inductor is a first output end of the chopper circuit; an emitter of the fifth N-type insulated gate bipolar transistor is connected with the second end of the eleventh capacitor and is a second output end of the chopper circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321222611.1U CN220139432U (en) | 2023-05-19 | 2023-05-19 | Cigarette machine set direct current power supply device based on PLC control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321222611.1U CN220139432U (en) | 2023-05-19 | 2023-05-19 | Cigarette machine set direct current power supply device based on PLC control |
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| CN220139432U true CN220139432U (en) | 2023-12-05 |
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| CN202321222611.1U Active CN220139432U (en) | 2023-05-19 | 2023-05-19 | Cigarette machine set direct current power supply device based on PLC control |
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| CN (1) | CN220139432U (en) |
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