CN203851012U - Large power IGBT parallel drive circuit applied to photovoltaic electric power generation - Google Patents
Large power IGBT parallel drive circuit applied to photovoltaic electric power generation Download PDFInfo
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- CN203851012U CN203851012U CN201420083036.6U CN201420083036U CN203851012U CN 203851012 U CN203851012 U CN 203851012U CN 201420083036 U CN201420083036 U CN 201420083036U CN 203851012 U CN203851012 U CN 203851012U
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- 238000010248 power generation Methods 0.000 title abstract description 3
- 239000013307 optical fiber Substances 0.000 claims abstract description 62
- 230000003287 optical effect Effects 0.000 claims abstract description 36
- 230000001360 synchronised effect Effects 0.000 claims abstract description 7
- 239000000835 fiber Substances 0.000 claims description 44
- 239000003990 capacitor Substances 0.000 claims description 13
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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Abstract
The utility model discloses a large power IGBT parallel drive circuit applied to photovoltaic electric power generation. The large power IGBT parallel drive circuit comprises a main control device, a plurality of IGBTs and driving modules thereof, a first optical fiber emitting circuit, a plurality of first optical fiber receiving circuits, a second optical fiber emitting circuit and a second optical fiber receiving circuit, wherein PWM driving electric signals output by the main control device are converted into a plurality of paths of synchronous driving optical signals by the first optical fiber emitting circuit, the driving optical signals are received by all first optical fiber receiving circuits and are converted into driving electric signals that are then output to all IGBTs and the driving modules thereof, IGBT fault electric signals are output when that faults occur in the IGBTs is detected by the IGBTs and the driving modules thereof, the plurality of paths of the IGBT fault electric signals are combined into one path of electric signals by the second optical fiber emitting circuit and are converted into fault electric signals that are then output, the fault optical signals are converted into fault electric signals by the second optical fiber receiving circuit, and the fault electric signals are output to the main control device. According to the large power IGBT parallel drive circuit, PWM driving electric signals can be converted into the plurality of paths of driving electric signals, and therefore parallel IGBTs and driving modules thereof can be driven, and therefore the plurality of paths of driving electric signals can be improved in synchronism and reliability.
Description
Technical field
The utility model relates to high-power photovoltaic technical field of power generation, relates in particular to a kind of high-power IGBT parallel driver circuit that is applied to photovoltaic generation.
Background technology
Solar energy power generating occupies the important seat of world energy sources consumption in 21 century, not only want Substitute For Partial conventional energy resource, and will become the main body of world energy supplies.Along with the continuous increase of solar photovoltaic interconnected inverter single-machine capacity and large-scale ground power plant scale, the operational efficiency of solar photovoltaic interconnected inverter, safety and stability are just important all the more.
In the large-capacity power electronic equipment of composition solar photovoltaic interconnected inverter, the electric current flowing through when power device exceedes the scope of design of existing power electronic device, or for reducing the loss of power device, while improving the current capacity of device for power switching, can adopt the power device of the same race technical scheme using in parallel.Only have when each in parallel power model static with dynamically all reach desirable symmetrical equilibrium state, could farthest utilize the power device after parallel connection, improve operational efficiency.Therefore,, for being connected in parallel of practical application, the symmetric condition of optimization is most important.
The switching device using for parallel connection, for reaching dynamically and Current for paralleled, need control switch device to open with the strict maintenance of the driving signal turn-offing and synchronize, if the output impedance of drive circuit exists deviation, to cause the inconsistent of switching time, it is unbalanced that aggravation switching loss distributes.Traditional Parallel Control has two kinds of common pattern, a kind of is the driving signal same by controller output multi-channel, after modulate circuit is repeatedly processed, give respectively insulated gate bipolar transistor in parallel (Insulated Gate Bipolar Transistor, IGBT) driver module (each IGBT all has independently driver module), this mode drives signal to exist synchronous effect not good, the problem that debugging is complicated, production efficiency is not high; Another kind is that one of controller output drives signal, this driving signal is after modulate circuit is repeatedly processed, give the passive drive module of parallel IGBT simultaneously, the deficiency of this mode is to drive signal must have enough large power to remove to drive IGBT and the driver module thereof of multiple parallel connections, and IGBT in parallel and the quantity of driver module thereof are driven the restriction of signal power, be unfavorable for Function Extension and the design optimization of product.
Utility model content
In view of this, the technical problems to be solved in the utility model is to provide a kind of high-power IGBT parallel driver circuit that is applied to photovoltaic generation, can improve the synchronism of parallel drive signal.
For solving the problems of the technologies described above, the technical solution of the utility model is achieved in that
Be applied to a high-power IGBT parallel driver circuit for photovoltaic generation, it comprises master controller and multiple insulated gate bipolar transistor IGBT and driver module thereof, also comprises:
The first optical fiber radiating circuit, described the first optical fiber radiating circuit is connected with described master controller, drives the signal of telecommunication to be converted to the driving light signal of Multi-path synchronous the pulse width modulation (PWM) of master controller output;
Multiple the first optical receiving circuits, each described the first optical receiving circuit is connected with this first optical fiber radiating circuit respectively, reception drives light signal and is converted to and drives the signal of telecommunication to export respectively this IGBT and driver module thereof to, and described IGBT and driver module thereof receive and drive opening and turn-offing of signal of telecommunication control IGBT; Described IGBT and driver module thereof detect exports the IGBT fault signal of telecommunication when IGBT breaks down;
The second optical fiber radiating circuit, described the second optical fiber radiating circuit connects respectively this IGBT and driver module thereof, and the multichannel IGBT fault signal of telecommunication is synthesized to a road and is converted to the output of fault light signal;
The second optical receiving circuit, described the second optical receiving circuit is connected with described the second optical fiber radiating circuit and master controller respectively, and this second optical receiving circuit is converted to the fault signal of telecommunication by fault light signal and exports this master controller to.
As preferred version, described the first optical fiber radiating circuit comprises bus driver and multiple optical fiber transmitter unit; This bus driver comprises one group of input and one group of output, and described input is connected with this master controller, and described output is provided with multiple, and respectively this output connects respectively the electric signal input end of each described optical fiber transmitter unit.
As preferred version, described the second optical fiber radiating circuit comprises triode and optical fiber transmitter unit, and the base stage of described triode connects each described IGBT and driver module thereof, and collector electrode connects the electric signal input end of described optical fiber transmitter unit, grounded emitter.
As preferred version, described optical fiber transmitter unit comprises fiber optic emitter, between the anode of this fiber optic emitter and negative electrode, be connected with resistance R 1 and capacitor C 1 in turn, between described resistance R 1 and capacitor C 1, be also connected with power supply, and the described electric signal input end negative electrode that is described fiber optic emitter.
As preferred version, described the first optical receiving circuit comprises fiber optic receiver, is connected in parallel to resistance R 2 and capacitor C 2 between the power end of this fiber optic receiver and output.
As preferred version, described the second optical receiving circuit comprises fiber optic receiver, is connected in parallel to resistance R 2 and capacitor C 2 between the power end of this fiber optic receiver and output.
As preferred version, the quantity of described the first optical receiving circuit is two, and the quantity of described IGBT and driver module thereof is two.
The technique effect that the utility model reaches is as follows:
1, the pulse width modulation (Pulse Width Modulation, PWM) of master controller output drives the signal of telecommunication can transform the multichannel driving signal of telecommunication to drive IGBT in parallel and driver module thereof, and multichannel drives the synchronism of the signal of telecommunication and reliability to improve.
2, PWM drives signal between master controller and IGBT, to pass through Optical Fiber Transmission, not affected by its residing complex electromagnetic environment, and antijamming capability strengthens.
3, PWM drives signal between master controller and IGBT, to pass through Optical Fiber Transmission, to the not requirement of the riding position of master controller, simple in structure, easy to operate.
4, the first fiber optic emitter circuit, the second optical fiber radiating circuit, the first fiber optic receiver circuit and the second fiber optic receiver circuit all can be used as a complete functional circuit module, be transplanted to the relevant occasion that needs IGBT parallel drive, the scope of application is wide.
Brief description of the drawings
Fig. 1 is the structured flowchart that the utility model is applied to the high-power IGBT parallel driver circuit of photovoltaic generation;
Fig. 2 is the schematic diagram of the utility model the first optical fiber radiating circuit;
Fig. 3 is the schematic diagram of the utility model the first optical receiving circuit;
Fig. 4 is the schematic diagram of the utility model the second optical fiber radiating circuit.
[symbol description]
Master controller 1
IGBT and driver module 2 thereof
The first optical fiber radiating circuit 3
Bus driver 31
Input 311
Input 312
Output 313
The first optical receiving circuit 4
Fiber optic receiver 41
The second optical fiber radiating circuit 5
Triode 51
Optical fiber transmitter unit 6
Fiber optic emitter 61
The second optical receiving circuit 7.
Embodiment
As shown in Figure 1, the high-power IGBT parallel driver circuit that the utility model is applied to photovoltaic generation comprises master controller 1, multiple IGBT and driver module 2 thereof, the first optical fiber radiating circuit 3, multiple the first optical receiving circuit 4, the second optical fiber radiating circuit 5 and the second optical receiving circuit 7.
Described the first optical fiber radiating circuit 3 is connected with master controller 1, and the PWM that master controller 1 can be exported drives the signal of telecommunication to be converted to the driving light signal of Multi-path synchronous.Each described the first optical receiving circuit 4 is connected with the first optical fiber radiating circuit 3 respectively, reception drives light signal and is converted to and drives the signal of telecommunication to export each IGBT and driver module 2 thereof to, and described IGBT and driver module 2 thereof receive and drive opening and turn-offing of signal of telecommunication control IGBT; Described IGBT and driver module thereof detect exports the IGBT fault signal of telecommunication when IGBT breaks down.The second optical fiber radiating circuit 5 connects each IGBT and driver module 2 thereof, and the multichannel IGBT fault signal of telecommunication is synthesized to a road and is converted to the output of fault light signal.Described the second optical receiving circuit 7 is connected with described the second optical fiber radiating circuit 5 and master controller 1 respectively, and this second optical receiving circuit 7 is converted to the fault signal of telecommunication by fault light signal and exports this master controller 1 to, makes master controller block PWM and drives signal.
In the present embodiment, the quantity of described the first optical receiving circuit 4 is two, corresponding described IGBT and the quantity of driver module 2 thereof are two, but not as limit, can be according to the needs in actual production process, set the quantity of required the first optical receiving circuit 4 and IGBT and driver module 2 thereof.
As shown in Figure 2, described the first optical fiber radiating circuit 3 comprises bus driver 31 and multiple optical fiber transmitter unit 6.This bus driver 31 comprises one group of input 311 and one group of output 313, and described input 311 is connected with master controller 1, receives the PWM being exported by master controller 1 and drives the signal of telecommunication.The quantity of described output 313 is provided with multiple, and respectively this output 313 connects respectively the electric signal input end of each described optical fiber transmitter unit 6, and respectively the synchronous driving signal of telecommunication of these output 313 output multi-channels is to each this optical fiber transmitter unit 6.In the present embodiment, in described the first optical fiber radiating circuit 3, be provided with two optical fiber transmitter units 6, and the quantity of the output 313 of corresponding bus driver 31 is also provided with two, but not as limit.
Wherein, described bus driver 31 can be SN75452, and described SN75452 bus driver also comprises that another group is for connecting the input 312 of power supply.
Optical fiber transmitter unit 6 comprises fiber optic emitter 61, between the anode of this fiber optic emitter 61 and negative electrode, be connected with resistance R 1 and capacitor C 1 in turn, between described resistance R 1 and capacitor C 1, be also connected with power supply, and described electric signal input end is the negative electrode of fiber optic emitter 61.Wherein, described fiber optic emitter 61 can be HFBR1521.In the time that the electric signal input end of described fiber optic emitter 61 is input as low level, this fiber optic emitter 61 just can send corresponding light signal.
Therefore, when the PWM exporting when master control 1 drives the signal of telecommunication to be high level, two outputs 313 output low levels simultaneously, the electric signal input end of fiber optic emitter 61 is input as low level, the laser generator conducting of described two fiber optic emitter 61 inside, sends synchronous light signal.In the time that the PWM of master control output drives the signal of telecommunication to be low level, two inputs 313 are exported high level simultaneously, and the laser generator of two fiber optic emitter 61 inside turn-offs, and does not send light signal.
As shown in Figure 3, described the first optical receiving circuit 4 comprises fiber optic receiver 41, in this fiber optic receiver 41, be provided with three terminal interface, wherein two terminal interface are respectively power end and output, and between described power end and output, be connected in parallel to resistance R 2 and capacitor C 2, a remaining terminal interface ground connection.Wherein, described fiber optic receiver 41 can be HFBR2521, and the numerical value of described resistance R 2 and capacitor C 2 can be set as required.
In the time there is no light signal input, the output output high level of fiber optic receiver 41; In the time having light signal input, the output output low level of fiber optic receiver 41.The optical receiving circuit 4 being made up of fiber optic receiver 41, resistance R 2 and capacitor C 2, at IGBT and driver module 2 ends thereof, receives the driving light signal being sent by master controller 1.
The second optical receiving circuit 7 in the utility model and structure and the operation principle of the first optical receiving circuit 4 are basic identical, will repeat no more at this.Its difference is: the second optical receiving circuit 7 is at master controller 1 end, and the fiber optic receiver in described the second optical receiving circuit 7 receives the fault light signal being sent by IGBT and driver module 2 thereof.
As shown in Figure 4, described the second optical fiber radiating circuit 5 comprises triode 51 and optical fiber transmitter unit 6, and the base stage of described triode 51 connects each described IGBT and driver module 2 thereof, and collector electrode connects the electric signal input end of described optical fiber transmitter unit 6, grounded emitter.
In the time of IGBT and driver module 2 normal work thereof, the IGBT fault signal of telecommunication that IGBT and driver module 2 thereof are exported is high level, triode 51 conductings, and the generating laser conducting of described fiber optic emitter 61 inside, this fiber optic emitter 61 is exported fault light signal.In the time that IGBT and driver module 2 thereof break down, the IGBT fault signal of telecommunication that IGBT and driver module 2 thereof are exported is low level, and triode 51 turn-offs, and the generating laser of described fiber optic emitter 61 inside turn-offs, and does not have light signal to export from this fiber optic emitter 61.Wherein, any one IGBT and driver module 2 thereof break down, and it is low level that triode 51 receives the Yi road fault signal of telecommunication, and triode 51 turn-offs, and causes and does not have light signal to export from described fiber optic emitter 61.
Resistance value and capacitance in resistance value in described the first optical fiber radiating circuit 3 and capacitance and the second optical fiber radiating circuit 5 can be set as required separately.
The first fiber optic emitter circuit 3 in the utility model, the first fiber optic receiver circuit 4, the second optical fiber radiating circuit 5, the second fiber optic receiver circuit 7 all can be powered by motherboard.
The utility model is by using the bus driver 31 in the first optical fiber radiating circuit 3, by two fiber optic emitters 61 of same driving chip drives, not only meet the synchronism that drives signal, owing to being optical signal transmission, also greatly improved the interference free performance that drives signal.
In addition, each part in the utility model all can be used as a complete functional circuit module, is transplanted to the relevant occasion that needs IGBT parallel drive, and the scope of application is wide.And the high-power IGBT parallel driver circuit that the utility model is applied to photovoltaic generation also can be applied to other different occasion as required.For example, can be applied to high-power photovoltaic synchronization inverter, big-power transducer, wind electric converter, also can be applied to high power switching power supply.
The above, be only preferred embodiment of the present utility model, is not intended to limit protection range of the present utility model.
Claims (7)
1. be applied to a high-power IGBT parallel driver circuit for photovoltaic generation, it comprises master controller and multiple insulated gate bipolar transistor IGBT and driver module thereof, it is characterized in that, also comprises:
The first optical fiber radiating circuit, described the first optical fiber radiating circuit is connected with described master controller, drives the signal of telecommunication to be converted to the driving light signal of Multi-path synchronous the pulse width modulation (PWM) of master controller output;
Multiple the first optical receiving circuits, each described the first optical receiving circuit is connected with this first optical fiber radiating circuit respectively, reception drives light signal and is converted to and drives the signal of telecommunication to export respectively this IGBT and driver module thereof to, and described IGBT and driver module thereof receive and drive opening and turn-offing of signal of telecommunication control IGBT; Described IGBT and driver module thereof detect exports the IGBT fault signal of telecommunication when IGBT breaks down;
The second optical fiber radiating circuit, described the second optical fiber radiating circuit connects respectively this IGBT and driver module thereof, and the multichannel IGBT fault signal of telecommunication is synthesized to a road and is converted to the output of fault light signal;
The second optical receiving circuit, described the second optical receiving circuit is connected with described the second optical fiber radiating circuit and master controller respectively, and this second optical receiving circuit is converted to the fault signal of telecommunication by fault light signal and exports this master controller to.
2. the high-power IGBT parallel driver circuit that is applied to photovoltaic generation according to claim 1, is characterized in that, described the first optical fiber radiating circuit comprises bus driver and multiple optical fiber transmitter unit; This bus driver comprises one group of input and one group of output, and described input is connected with this master controller, and described output is provided with multiple, and respectively this output connects respectively the electric signal input end of each described optical fiber transmitter unit.
3. the high-power IGBT parallel driver circuit that is applied to photovoltaic generation according to claim 1, it is characterized in that, described the second optical fiber radiating circuit comprises triode and optical fiber transmitter unit, the base stage of described triode connects each described IGBT and driver module thereof, collector electrode connects the electric signal input end of described optical fiber transmitter unit, grounded emitter.
4. according to the high-power IGBT parallel driver circuit that is applied to photovoltaic generation described in claim 2 or 3, it is characterized in that, described optical fiber transmitter unit comprises fiber optic emitter, between the anode of this fiber optic emitter and negative electrode, be connected with resistance R 1 and capacitor C 1 in turn, between described resistance R 1 and capacitor C 1, be also connected with power supply, and the described electric signal input end negative electrode that is described fiber optic emitter.
5. the high-power IGBT parallel driver circuit that is applied to photovoltaic generation according to claim 1, it is characterized in that, described the first optical receiving circuit comprises fiber optic receiver, is connected in parallel to resistance R 2 and capacitor C 2 between the power end of this fiber optic receiver and output.
6. the high-power IGBT parallel driver circuit that is applied to photovoltaic generation according to claim 1, it is characterized in that, described the second optical receiving circuit comprises fiber optic receiver, is connected in parallel to resistance R 2 and capacitor C 2 between the power end of this fiber optic receiver and output.
7. the high-power IGBT parallel driver circuit that is applied to photovoltaic generation according to claim 1, is characterized in that, the quantity of described the first optical receiving circuit is two, and the quantity of described IGBT and driver module thereof is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420083036.6U CN203851012U (en) | 2014-02-26 | 2014-02-26 | Large power IGBT parallel drive circuit applied to photovoltaic electric power generation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420083036.6U CN203851012U (en) | 2014-02-26 | 2014-02-26 | Large power IGBT parallel drive circuit applied to photovoltaic electric power generation |
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|---|---|
| CN203851012U true CN203851012U (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420083036.6U Expired - Lifetime CN203851012U (en) | 2014-02-26 | 2014-02-26 | Large power IGBT parallel drive circuit applied to photovoltaic electric power generation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226921A (en) * | 2015-10-15 | 2016-01-06 | 珠海格力电器股份有限公司 | Isolated DC/DC controller, bidirectional converter control system and control method |
| CN105471234A (en) * | 2015-12-16 | 2016-04-06 | 山西惠特科技有限公司 | Optical fiber signal conversion circuit for 3,300V high-power IGBT driver |
| CN107528456A (en) * | 2017-10-19 | 2017-12-29 | 合肥联信电源有限公司 | A kind of high power module optical fiber drive signal change-over panel |
| CN108390721A (en) * | 2018-05-10 | 2018-08-10 | 武汉锐科光纤激光技术股份有限公司 | A kind of laser internal signal transmission system |
| CN117054788A (en) * | 2023-08-29 | 2023-11-14 | 浙江方圆电气设备检测有限公司 | Electrical appliance low-inductance direct current test system for new energy automobile |
-
2014
- 2014-02-26 CN CN201420083036.6U patent/CN203851012U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226921A (en) * | 2015-10-15 | 2016-01-06 | 珠海格力电器股份有限公司 | Isolated DC/DC controller, bidirectional converter control system and control method |
| CN105471234A (en) * | 2015-12-16 | 2016-04-06 | 山西惠特科技有限公司 | Optical fiber signal conversion circuit for 3,300V high-power IGBT driver |
| CN105471234B (en) * | 2015-12-16 | 2018-02-23 | 山西惠特科技有限公司 | Fiber-optic signal change-over circuit for the driving of 3300V high-power IGBTs |
| CN107528456A (en) * | 2017-10-19 | 2017-12-29 | 合肥联信电源有限公司 | A kind of high power module optical fiber drive signal change-over panel |
| CN108390721A (en) * | 2018-05-10 | 2018-08-10 | 武汉锐科光纤激光技术股份有限公司 | A kind of laser internal signal transmission system |
| CN108390721B (en) * | 2018-05-10 | 2023-12-19 | 武汉锐科光纤激光技术股份有限公司 | Laser internal signal transmission system |
| CN117054788A (en) * | 2023-08-29 | 2023-11-14 | 浙江方圆电气设备检测有限公司 | Electrical appliance low-inductance direct current test system for new energy automobile |
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| C14 | Grant of patent or utility model | ||
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140924 |