CN204231223U - The power supply device of three-phase half-bridge isolation drive - Google Patents
The power supply device of three-phase half-bridge isolation drive Download PDFInfo
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- CN204231223U CN204231223U CN201420731663.6U CN201420731663U CN204231223U CN 204231223 U CN204231223 U CN 204231223U CN 201420731663 U CN201420731663 U CN 201420731663U CN 204231223 U CN204231223 U CN 204231223U
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- wave filtering
- current rectifying
- filtering circuit
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Abstract
The utility model discloses a kind of power supply device of three-phase half-bridge isolation drive, comprise direct-current input power supplying, switching circuit, control circuit, high frequency transformer, the first current rectifying and wave filtering circuit, the second current rectifying and wave filtering circuit, the 3rd current rectifying and wave filtering circuit, the 4th current rectifying and wave filtering circuit.The output of the first current rectifying and wave filtering circuit, the second current rectifying and wave filtering circuit, the 3rd current rectifying and wave filtering circuit, the 4th current rectifying and wave filtering circuit is mutually isolated, for six isolated drive circuits of three-phase half-bridge provide driving power supply.The power supply device of the three-phase half-bridge isolation drive that the utility model provides, one tunnel DC power supply is converted to the mutually isolated power supply in four tunnels, power to respectively six isolated drive circuits of three-phase half-bridge, circuit realiration is simple, compact conformation, power supply is reliable, and every road provides positive and negative driving power simultaneously, ensure that reliably opening and shutoff of switching device.
Description
Technical field
The utility model relates to power converter topology, particularly a kind of power supply device of three-phase half-bridge isolation drive.
Background technology
In three-phase rectifier or inverter circuit, for ensureing safety and reliability, vulnerabilities scan loop needs to realize electrical isolation with high pressure forceful electric power loop, thus the switching device of main loop of power circuit needs to adopt isolation drive mode.In the Three-Phase PWM Rectifier realizing electrical isolation at control loop and loop of power circuit or three-phase inverter, there is provided reliable driving power how to the drive circuit of six switching devices of three-phase half-bridge, ensure that the switching device of three-phase half-bridge is reliably opened and shutoff, significant to the reliably working of Three-Phase PWM Rectifier or three-phase inverter.
Summary of the invention
The power supply device that the utility model is intended to propose that a kind of circuit realiration is simple, compact conformation, reliable, the every road of power supply have the three-phase half-bridge isolation drive of positive and negative driving power supply.
The utility model is achieved through the following technical solutions.
A power supply device for three-phase half-bridge isolation drive, comprises direct-current input power supplying, switching circuit, control circuit, high frequency transformer, the first current rectifying and wave filtering circuit, the second current rectifying and wave filtering circuit, the 3rd current rectifying and wave filtering circuit, the 4th current rectifying and wave filtering circuit.
The input of described switching circuit is connected with direct-current input power supplying, and the output of described switching circuit is connected with the former limit of described high frequency transformer, and the control end of described switching circuit is connected with control circuit;
Preferably, direct-current input power supplying voltage is+15V;
The input of described first current rectifying and wave filtering circuit is connected with described high frequency transformer first secondary output, and the output of described first current rectifying and wave filtering circuit is connected with the drive circuitry end of the upper switching device of three-phase half-bridge first brachium pontis;
The input of described second current rectifying and wave filtering circuit is connected with described high frequency transformer second secondary output, and the output of described second current rectifying and wave filtering circuit is connected with the drive circuitry end of the upper switching device of three-phase half-bridge second brachium pontis;
The input of described 3rd current rectifying and wave filtering circuit is connected with described high frequency transformer the 3rd secondary output, and the output of described 3rd current rectifying and wave filtering circuit is connected with the drive circuitry end of the upper switching device of three-phase half-bridge the 3rd brachium pontis;
The input of described 4th current rectifying and wave filtering circuit is connected with described high frequency transformer the 4th secondary output, and the described output of the 4th current rectifying and wave filtering circuit is connected with the drive circuitry end of the drive circuitry end of the drive circuitry end of the lower switching device of the first brachium pontis of three-phase half-bridge, the lower switching device of the second brachium pontis, the lower switching device of the 3rd brachium pontis.
The drive circuitry end of the drive circuitry end of the drive circuitry end of the lower switching device of the first brachium pontis of above-mentioned three-phase half-bridge, the lower switching device of the second brachium pontis, the lower switching device of the 3rd brachium pontis adopts and connects altogether.
Upper switching device, the lower switching device of above-mentioned three-phase half-bridge are MOSFET or IGBT.
The output voltage of described first current rectifying and wave filtering circuit is: the first positive voltage+VCC1, the first negative voltage-VEE1 and the first common port COM1.
The output voltage of described second current rectifying and wave filtering circuit is: the second positive voltage+VCC2, the second negative voltage-VEE2 and the second common port COM2.
The output voltage of described 3rd current rectifying and wave filtering circuit is: the 3rd positive voltage+VCC3, the 3rd negative voltage-VEE3 and the 3rd common port COM3.
The output voltage of described 4th current rectifying and wave filtering circuit is: the 4th positive voltage+VCC4, the 4th negative voltage-VEE4 and the 4th common port COM4.
Described control circuit is made up of current mode PWM controller.Preferably, the current mode PWM controller adopted is UC3842.
In the utility model, first current rectifying and wave filtering circuit, second current rectifying and wave filtering circuit, 3rd current rectifying and wave filtering circuit, the output of the 4th current rectifying and wave filtering circuit is mutually isolated, first current rectifying and wave filtering circuit output voltage is to the drive circuitry of the upper switching device of the first brachium pontis of three-phase half-bridge, second current rectifying and wave filtering circuit output voltage gives the drive circuitry of the upper switching device of the second brachium pontis, 3rd current rectifying and wave filtering circuit output voltage gives the drive circuitry of the upper switching device of the 3rd brachium pontis, 4th current rectifying and wave filtering circuit output voltage gives the lower switching device of the first brachium pontis simultaneously, the lower switching device of the second brachium pontis, the drive circuitry of the lower switching device of the 3rd brachium pontis.The drive circuit of the lower switching device of the lower switching device of the first brachium pontis, the lower switching device of the second brachium pontis, the 3rd brachium pontis adopts connected mode altogether, and the common port of this three's drive circuit is connected with the DC bus negative pole of three-phase half-bridge.
The power supply device of the three-phase half-bridge isolation drive that the utility model provides, one tunnel DC power supply is converted to the mutually isolated driving power in four tunnels, power to respectively six isolated drive circuits of three-phase half-bridge, circuit realiration is simple, compact conformation, power supply is reliable, and every road provides positive and negative driving power simultaneously, can ensure reliably opening and reliable turn-off of switching device.The utility model technology has important practical value in Three-Phase PWM Rectifier or three-phase inverter.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Fig. 1 is the power supply device of three-phase half-bridge isolation drive of the present utility model and the johning knot composition of three-phase half-bridge isolation drive.
Fig. 2 is the structured flowchart of the power supply device of three-phase half-bridge isolation drive of the present utility model.
Fig. 3 is the circuit realiration schematic diagram of the power supply device of three-phase half-bridge isolation drive of the present utility model.
Embodiment
By reference to the accompanying drawings the utility model is described in detail.
Fig. 1 is the power supply device of three-phase half-bridge isolation drive of the present utility model and the johning knot composition of three-phase half-bridge isolation drive, comprises input DC power, switching circuit, control circuit, high frequency transformer, the first current rectifying and wave filtering circuit, the second current rectifying and wave filtering circuit, the 3rd current rectifying and wave filtering circuit, the 4th current rectifying and wave filtering circuit.
In figure, first switching device, 4th switching device constitutes the first brachium pontis of three-phase half-bridge, first switching device, 4th switching device is respectively the upper switching device of the first brachium pontis and lower switching device, second switch device, 5th switching device constitutes the second brachium pontis of three-phase half-bridge, second switch device, 5th switching device is respectively the upper switching device of the second brachium pontis and lower switching device, 3rd switching device, 6th switching device constitutes the 3rd brachium pontis of three-phase half-bridge, 3rd switching device, 6th switching device is respectively the upper switching device of the 3rd brachium pontis and lower switching device.First isolated drive circuit is the drive circuit of the upper switching device of the first brachium pontis, 4th isolated drive circuit is the drive circuit of the lower switching device of the first brachium pontis, second isolated drive circuit is the drive circuit of the upper switching device of the second brachium pontis, 5th isolated drive circuit is the drive circuit of the lower switching device of the second brachium pontis, 3rd isolated drive circuit is the drive circuit of the upper switching device of the 3rd brachium pontis, and the 6th isolated drive circuit is the drive circuit of the lower switching device of the 3rd brachium pontis.
The input of switching circuit is connected with direct-current input power supplying, and the output of switching circuit is connected with the former limit of high frequency transformer, and the control end of switching circuit is connected with control circuit;
The input of the first current rectifying and wave filtering circuit is connected with described high frequency transformer first secondary output, and the output of the first current rectifying and wave filtering circuit is connected with the drive circuitry end of the upper switching device of three-phase half-bridge first brachium pontis;
The input of the second current rectifying and wave filtering circuit is connected with described high frequency transformer second secondary output, and the output of the second current rectifying and wave filtering circuit is connected with the drive circuitry end of the upper switching device of three-phase half-bridge second brachium pontis;
The input of the 3rd current rectifying and wave filtering circuit is connected with described high frequency transformer the 3rd secondary output, and the output of the 3rd current rectifying and wave filtering circuit is connected with the drive circuitry end of the upper switching device of three-phase half-bridge the 3rd brachium pontis;
The input of the 4th current rectifying and wave filtering circuit is connected with described high frequency transformer the 4th secondary output, and the output of the 4th current rectifying and wave filtering circuit is connected with the drive circuitry end of the drive circuitry end of the drive circuitry end of the lower switching device of the first brachium pontis of three-phase half-bridge, the lower switching device of the second brachium pontis, the lower switching device of the 3rd brachium pontis.
The drive circuitry end of the drive circuitry end of the drive circuitry end of the lower switching device of the first brachium pontis of above-mentioned three-phase half-bridge, the lower switching device of the second brachium pontis, the lower switching device of the 3rd brachium pontis adopts connected mode altogether, and the common port of this three's drive circuit is connected with the DC bus negative pole of three-phase half-bridge.
Fig. 2 is the structured flowchart of the power supply device of three-phase half-bridge isolation drive of the present utility model.Comprise direct-current input power supplying, switching circuit, control circuit, high frequency transformer, the first current rectifying and wave filtering circuit, the second current rectifying and wave filtering circuit, the 3rd current rectifying and wave filtering circuit, the 4th current rectifying and wave filtering circuit.
The input of switching circuit is connected with the feeder ear+Vin of direct-current input power supplying, and the output of switching circuit is connected with the former limit of high frequency transformer, and the control end of switching circuit is connected with control circuit.
Preferably ,+Vin is+15V voltage.
The input of the first current rectifying and wave filtering circuit is connected with high frequency transformer first secondary output, and the output voltage of the first current rectifying and wave filtering circuit is: the first positive voltage+VCC1, the first negative voltage-VEE1 and the first common port COM1.
The input of the second current rectifying and wave filtering circuit is connected with described high frequency transformer second secondary output, and the output voltage of the second current rectifying and wave filtering circuit is: the second positive voltage+VCC2, the second negative voltage-VEE2 and the second common port COM2.
The input of the 3rd current rectifying and wave filtering circuit is connected with high frequency transformer the 3rd secondary output, and the output voltage of the 3rd current rectifying and wave filtering circuit is: the 3rd positive voltage+VCC3, the 3rd negative voltage-VEE3 and the 3rd common port COM3.
The input of the 4th current rectifying and wave filtering circuit is connected with high frequency transformer the 4th secondary output, and the output voltage of the 4th current rectifying and wave filtering circuit is: the 4th positive voltage+VCC4, the 4th negative voltage-VEE4 and the 4th common port COM4.
Fig. 3 is the circuit realiration schematic diagram of the power supply device of three-phase half-bridge isolation drive of the present utility model.Resistance R2, resistance R3, switch mosfet pipe Q1, diode D1 constitutes the switching circuit of the power supply device of three-phase half-bridge isolation drive, current mode PWM controller U1, resistance R1, electric capacity C2, electric capacity C3, electric capacity C4 constitutes the control circuit of power supply device, T1 is high frequency switch transformer, diode D2, electric capacity C5, electric capacity C6, resistance R4, voltage-stabiliser tube ZD1, electric capacity C7 constitutes the first current rectifying and wave filtering circuit of power supply device, diode D3, electric capacity C8, electric capacity C9, resistance R5, voltage-stabiliser tube ZD2, electric capacity C10 constitutes the second current rectifying and wave filtering circuit of power supply device, diode D4, electric capacity C11, electric capacity C12, resistance R6, voltage-stabiliser tube ZD3, electric capacity C13 constitutes the 3rd current rectifying and wave filtering circuit of power supply device, diode D5, electric capacity C14, electric capacity C15, resistance R7, voltage-stabiliser tube ZD4, electric capacity C16 constitutes the 4th current rectifying and wave filtering circuit of power supply device.
Concrete circuit connects: the power supply pin VCC of current mode PWM controller U1 is connected with direct-current input power supplying+Vin, the grounding pin GND of U1 is connected with the ground level GND0 of direct-current input power supplying+Vin, the compensation end pin COM of U1 is connected with one end of electric capacity C2, and the other end of electric capacity C2 is connected with ground level GND0.The capacitance-resistance vibration pin RT/CT of U1 is connected with one end of resistance R1, one end of electric capacity C3, and the other end of electric capacity C3 is connected with ground level GND0.The reference voltage output pin VREF of U1 is connected with the other end of resistance R1, one end of electric capacity C4, and the other end of electric capacity C4 is connected with ground level GND0.The Voltage Feedback pin FB of U1 is connected with ground level GND0, and the current sampling pin IS of U1 is connected with ground level GND0.The PWM output pin OUT of U1 is connected with one end of resistance R2, and the other end of resistance R2 is connected with one end of the grid of switch mosfet pipe Q1, resistance R3, and the other end of resistance R3 is connected with ground level GND0.The drain electrode of switch mosfet pipe Q1 is connected with the Same Name of Ends on the first former limit of high frequency transformer T1, and the source electrode of switch mosfet pipe Q1 is connected with ground level GND0, and the different name end on the first former limit of high frequency transformer T1 is connected with direct-current input power supplying+Vin.The Same Name of Ends on the second former limit of high frequency transformer T1 is connected with the anode of diode D1, and the different name end on the second former limit of high frequency transformer T1 is connected with ground level GND0, and the negative electrode of diode D1 is connected with direct-current input power supplying+Vin.
The Same Name of Ends of first secondary of high frequency transformer T1 is connected with the anode of diode D2, the negative electrode of diode D2 is connected with one end of the positive pole of electric capacity C5, electric capacity C6, one end of resistance R4, the other end of resistance R4 is connected with the anode of the negative electrode of voltage-stabiliser tube ZD1, electric capacity C7, and the other end of the different name end of first secondary of high frequency transformer T1 and the negative pole of electric capacity C5, electric capacity C6, the anode of voltage-stabiliser tube ZD1, the negative pole of electric capacity C7 are connected.The negative electrode of diode D2 exports and is the first positive voltage+VCC1, and the negative electrode of voltage-stabiliser tube ZD1 exports and is the first common port COM1, and the different name end of first secondary of high frequency transformer T1 exports and is the first negative voltage-VEE1.
The Same Name of Ends of second secondary of high frequency transformer T1 is connected with the anode of diode D3, the negative electrode of diode D3 is connected with one end of the positive pole of electric capacity C8, electric capacity C8, one end of resistance R5, the other end of resistance R5 is connected with the anode of the negative electrode of voltage-stabiliser tube ZD2, electric capacity C10, and the other end of the different name end of second secondary of high frequency transformer T1 and the negative pole of electric capacity C8, electric capacity C9, the anode of voltage-stabiliser tube ZD2, the negative pole of electric capacity C10 are connected.The negative electrode of diode D3 exports and is the second positive voltage+VCC2, and the negative electrode of voltage-stabiliser tube ZD2 exports and is the second common port COM2, and the different name end of second secondary of high frequency transformer T1 exports and is the second negative voltage-VEE2.
The Same Name of Ends of the 3rd secondary of high frequency transformer T1 is connected with the anode of diode D4, the negative electrode of diode D4 is connected with one end of the positive pole of electric capacity C11, electric capacity C12, one end of resistance R6, the other end of resistance R6 is connected with the anode of the negative electrode of voltage-stabiliser tube ZD3, electric capacity C13, and the other end of the different name end of the 3rd secondary of high frequency transformer T1 and the negative pole of electric capacity C11, electric capacity C12, the anode of voltage-stabiliser tube ZD3, the negative pole of electric capacity C13 are connected.The negative electrode of diode D4 exports and is the 3rd positive voltage+VCC3, and the negative electrode of voltage-stabiliser tube ZD3 exports and is the 3rd common port COM3, and the different name end of the 3rd secondary of high frequency transformer T1 exports and is the 3rd negative voltage-VEE3.
The Same Name of Ends of the 4th secondary of high frequency transformer T1 is connected with the anode of diode D5, the negative electrode of diode D5 is connected with one end of the positive pole of electric capacity C14, electric capacity C15, one end of resistance R7, the other end of resistance R7 is connected with the anode of the negative electrode of voltage-stabiliser tube ZD4, electric capacity C16, and the other end of the different name end of the 4th secondary of high frequency transformer T1 and the negative pole of electric capacity C14, electric capacity C15, the anode of voltage-stabiliser tube ZD4, the negative pole of electric capacity C16 are connected.The negative electrode of diode D5 exports and is the 4th positive voltage+VCC4, and the negative electrode of voltage-stabiliser tube ZD4 exports and is the 4th common port COM4, and the different name end of the 4th secondary of high frequency transformer T1 exports and is the 4th negative voltage-VEE4.
Above embodiment is only in order to illustrate the technical solution of the utility model but not restriction to the utility model protection range; although be explained in detail the utility model with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical solution of the utility model or equivalent replacement, and not depart from essence and the scope of technical solutions of the utility model.
Claims (3)
1. the power supply device of a three-phase half-bridge isolation drive, comprise direct-current input power supplying, switching circuit, control circuit, high frequency transformer, the first current rectifying and wave filtering circuit, the second current rectifying and wave filtering circuit, the 3rd current rectifying and wave filtering circuit, the 4th current rectifying and wave filtering circuit, it is characterized in that:
The input of described switching circuit is connected with direct-current input power supplying, and the output of described switching circuit is connected with the former limit of described high frequency transformer, and the control end of described switching circuit is connected with control circuit;
The input of described first current rectifying and wave filtering circuit is connected with described high frequency transformer first secondary output, and the output of described first current rectifying and wave filtering circuit is connected with the drive circuitry end of the upper switching device of three-phase half-bridge first brachium pontis;
The input of described second current rectifying and wave filtering circuit is connected with described high frequency transformer second secondary output, and the output of described second current rectifying and wave filtering circuit is connected with the drive circuitry end of the upper switching device of three-phase half-bridge second brachium pontis;
The input of described 3rd current rectifying and wave filtering circuit is connected with described high frequency transformer the 3rd secondary output, and the output of described 3rd current rectifying and wave filtering circuit is connected with the drive circuitry end of the upper switching device of three-phase half-bridge the 3rd brachium pontis;
The input of described 4th current rectifying and wave filtering circuit is connected with described high frequency transformer the 4th secondary output, and the described output of the 4th current rectifying and wave filtering circuit is connected with the drive circuitry end of the drive circuitry end of the drive circuitry end of the lower switching device of the first brachium pontis of three-phase half-bridge, the lower switching device of the second brachium pontis, the lower switching device of the 3rd brachium pontis.
2. the power supply device of a kind of three-phase half-bridge isolation drive according to claim 1, is characterized in that:
The output voltage of described first current rectifying and wave filtering circuit is: the first positive voltage+VCC1, the first negative voltage-VEE1 and the first common port COM1;
The output voltage of described second current rectifying and wave filtering circuit is: the second positive voltage+VCC2, the second negative voltage-VEE2 and the second common port COM2;
The output voltage of described 3rd current rectifying and wave filtering circuit is: the 3rd positive voltage+VCC3, the 3rd negative voltage-VEE3 and the 3rd common port COM3;
The output voltage of described 4th current rectifying and wave filtering circuit is: the 4th positive voltage+VCC4, the 4th negative voltage-VEE4 and the 4th common port COM4.
3. the power supply device of a kind of three-phase half-bridge isolation drive according to claim 1, is characterized in that: described control circuit is made up of current mode PWM controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420731663.6U CN204231223U (en) | 2014-12-01 | 2014-12-01 | The power supply device of three-phase half-bridge isolation drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420731663.6U CN204231223U (en) | 2014-12-01 | 2014-12-01 | The power supply device of three-phase half-bridge isolation drive |
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| Publication Number | Publication Date |
|---|---|
| CN204231223U true CN204231223U (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420731663.6U Expired - Fee Related CN204231223U (en) | 2014-12-01 | 2014-12-01 | The power supply device of three-phase half-bridge isolation drive |
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| CN (1) | CN204231223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245497A (en) * | 2018-10-17 | 2019-01-18 | 贵州航天林泉电机有限公司苏州分公司 | A kind of negative pressure isolated half-bridge drive circuit |
-
2014
- 2014-12-01 CN CN201420731663.6U patent/CN204231223U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245497A (en) * | 2018-10-17 | 2019-01-18 | 贵州航天林泉电机有限公司苏州分公司 | A kind of negative pressure isolated half-bridge drive circuit |
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Granted publication date: 20150325 Termination date: 20151201 |
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