CN203800816U - Driving signal amplification and switching circuit board for photovoltaic inverter - Google Patents
Driving signal amplification and switching circuit board for photovoltaic inverter Download PDFInfo
- Publication number
- CN203800816U CN203800816U CN201320857099.8U CN201320857099U CN203800816U CN 203800816 U CN203800816 U CN 203800816U CN 201320857099 U CN201320857099 U CN 201320857099U CN 203800816 U CN203800816 U CN 203800816U
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- circuit
- triode
- driving signal
- resistance
- circuit board
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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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- Power Conversion In General (AREA)
Abstract
The utility model provides a driving signal amplification and switching circuit board for a photovoltaic inverter; the driving signal amplification and switching circuit board comprises a main circuit, a 8-pin interface circuit and a 5-pin interface circuit; the main circuit is respectively connected with the 8-pin interface circuit and the 5-pin interface circuit; the main circuit comprises a push-pull circuit and an IGBT fault-signal processing/feedback circuit; the push-pull circuit and the IGBT fault-signal processing/feedback circuit are connected; the push-pull circuit comprises two triodes and two sets of resistors, a first triode is connected in parallel with a second triode, the first set of resistors are connected in parallel and then connected in series with an emitting electrode of the first triode, the second set of resistors are connected in parallel and then connected in series with a collector electrode of the second triode, and the first and second sets of resistors are connected in parallel; the driving signal amplification and switching circuit board is high in integration level, simple in wire mounting, convenient for technical personnel to mount and operate, high in stability and reliability, and convenient for people to safely operate.
Description
Technical field
The utility model relates to a kind of electronic installation of practicality, is specifically related to a kind of photovoltaic DC-to-AC converter with driving signal to amplify and switching circuit board.
Background technology
IGBT is the multiple device of MOSFET and bipolar transistor.The feature that its existing MOSFET easily drives, has again the advantages such as power crystal tube voltage, current capacity are large.Its frequency characteristic, between MOSFET and power transistor, can normally work in tens kHz frequency ranges, therefore occupied leading position in the big or middle power application of upper frequency.Due to characteristics such as igbt have higher current capacity, voltage control, and conduction loss is little.In various power inverters, be widely used in recent years.
The safety operation area of IGBT and switching characteristic change with the change of drive circuit, and in order to ensure IGBT reliably working, Drive Protecting Circuit is most important.Technical requirement to drive circuit is: driving force is strong; Input and output are short time of delay; Dual power supply, provides reliable turn-off; Input and output electrical isolation intensity is high; Overload flow protection reliably.
At present, because kind and the producer of core devices are a lot of, interface and the drive form of each producer are different again simultaneously, so brought inconvenience to the use of power cell.
Summary of the invention
The purpose of this utility model is for solving above-mentioned deficiency, provides a kind of photovoltaic DC-to-AC converter with driving signal to amplify and switching circuit board.
The purpose of this utility model is achieved through the following technical solutions:
A kind of photovoltaic DC-to-AC converter is with driving signal to amplify and switching circuit board, comprise main circuit, 8 needle interface circuit and 5 needle interface circuit, main circuit connects respectively 8 needle interface circuit and 5 needle interface circuit, and described main circuit comprises the processing/feedback circuit of push-pull circuit and IGBT fault-signal; Push-pull circuit is connected with the processing/feedback circuit of IGBT fault-signal.
The utility model also has some technical characterictics like this:
1, described push-pull circuit comprises two triodes and two groups of resistance, the first triode and the second triode are connected in parallel, after first group of resistance parallel connection, connect with the emitter of the first triode, after second group of resistance parallel connection, connect with the collector electrode of the second triode, first group of resistance and second group of resistance are connected in parallel, transmit by upper level the driving signal coming and carry out one-level amplification through this push-pull circuit, make the driving signal after amplifying can drive rear class IGBT.
2, the processing/feedback circuit of described IGBT fault-signal comprises four diodes and two resistance, and wherein two diodes are forward connected in series, and is then connected in series formation rectification unit with a resistance, two rectification unit parallel connections.
3, the first described triode model is MJD44H11RLG, and the second triode model is MJD45H11RLG.
The utlity model has following useful effect:
The integrated degree of the utility model is high, and installation wiring is simple, is convenient to technical staff's fitting operation, and stability and reliability are all very high, is convenient to personal security operation.
Brief description of the drawings
Fig. 1 the utility model status of living in block diagram when in parallel use in photovoltaic inverter control system;
Fig. 2 main circuit diagram of the present utility model;
Fig. 38 needle interface circuit diagrams of the present utility model;
Fig. 45 needle interface circuit diagrams of the present utility model;
Fig. 5 functional block diagram of the present utility model;
Structured flowchart between Fig. 6 each circuit of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described:
embodiment 1
A kind of photovoltaic DC-to-AC converter is with driving signal to amplify and switching circuit board, comprise main circuit 1,8 needle interface circuit 2 and 5 needle interface circuit 3, main circuit 1 connects respectively 8 needle interface circuit 2 and 5 needle interface circuit 3, described main circuit 1 comprises the processing/feedback circuit of push-pull circuit and IGBT fault-signal, and push-pull circuit is connected with the processing/feedback circuit of IGBT fault-signal; Described push-pull circuit comprises two triodes and two groups of resistance, the first triode and the second triode are connected in parallel, after first group of resistance parallel connection, connect with the emitter of the first triode, after second group of resistance parallel connection, connect with the collector electrode of the second triode, first group of resistance and second group of resistance are connected in parallel, transmit by upper level the driving signal coming and carry out one-level amplification through this push-pull circuit, make the driving signal after amplifying can drive rear class IGBT; Processing/the feedback circuit of described IGBT fault-signal comprises four diodes and two resistance, and wherein two diodes are forward connected in series, and is then connected in series formation rectification unit with a resistance, two rectification unit parallel connections; The first described triode model is MJD44H11RLG, and the second triode model is MJD45H11RLG.
embodiment 2
Fig. 1 is the utility model status of living in block diagram when in parallel use in photovoltaic inverter control system." DSP control board " is responsible for sending the instruction of PWM ripple, and this instruction passed to " pwm signal drives and keyset ", and this circuit board amplifies signal driver.It is divided into 4 identical Zhi roads by the signal after amplifying and passes to the utility model (in Fig. 1 " a kind of photovoltaic DC-to-AC converter is with driving signal converting circuit board ") afterwards.Finally drive IGBT by the utility model circuit board, realize whole control flow.This mode has realized maximum 4 IGBT parallel connections, considers the flexibility of its use, can realize 1 any number of parallel form to 4 IGBT parallel connections in this scheme.In this process, the utility model is being undertaken following 2 effects: pwm signal is carried out one stage signal amplification by (1); (2) processing of IGBT fault-signal and the feedback of fault-signal.
Fig. 2 is the main circuit diagram of this utility model.Be divided into two unit, it is respectively upper and lower two brachium pontis services in IGBT module.Triode Q1, Q2 and resistor group composition one-level push-pull circuit, realize pwm control signal enlarging function.Wherein resistance R 1 ~ R9, R13 ~ R19, R21, R23, R25, by according to the requirement of the specification of the IGBT of different model, are reasonably configured to the resistance of different resistances, thereby this utility model can adapt to the IGBT module of plurality of specifications.Diode D1, D2 and R10 are for feeding back the state of brachium pontis in IGBT module.When normal, the voltage of the P9 of IGBT is very high, and in the time that the upper brachium pontis of IGBT damages, this point voltage reduces, and diode D1, D2 be conducting, thereby the malfunction of this brachium pontis is uploaded to upper level.As shown in Figure 2, the 26S Proteasome Structure and Function of another part unit with tell before identical.
Fig. 3 and Fig. 4 are respectively the utility model 8 pins and 5 needle interface circuit diagrams.The utility model is connected with other circuit boards by this part of interface, is wherein undertaking the function such as transmission, the transmission of fault-signal and the transmission of 15V power supply of PWM ripple signal.
Claims (4)
1. a photovoltaic DC-to-AC converter is with driving signal to amplify and switching circuit board, comprise main circuit, 8 needle interface circuit and 5 needle interface circuit, it is characterized in that: main circuit connects respectively 8 needle interface circuit and 5 needle interface circuit, and described main circuit comprises the processing/feedback circuit of push-pull circuit and IGBT fault-signal; Push-pull circuit is connected with the processing/feedback circuit of IGBT fault-signal.
2. a kind of photovoltaic DC-to-AC converter as claimed in claim 1 is with driving signal to amplify and switching circuit board, it is characterized in that: described push-pull circuit comprises two triodes and two groups of resistance, the first triode and the second triode are connected in parallel, after first group of resistance parallel connection, connect with the emitter of the first triode, after second group of resistance parallel connection, connect with the collector electrode of the second triode, first group of resistance and second group of resistance are connected in parallel, transmit by upper level the driving signal coming and carry out one-level amplification through this push-pull circuit, make the driving signal after amplifying can drive rear class IGBT.
3. a kind of photovoltaic DC-to-AC converter as claimed in claim 1 is with driving signal to amplify and switching circuit board, it is characterized in that: the processing/feedback circuit of described IGBT fault-signal comprises four diodes and two resistance, wherein two diodes are forward connected in series, then be connected in series formation rectification unit with a resistance, two rectification unit parallel connections.
4. a kind of photovoltaic DC-to-AC converter as claimed in claim 2, with driving signal to amplify and switching circuit board, is characterized in that: the first described triode model is MJD44H11RLG, and the second triode model is MJD45H11RLG.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320857099.8U CN203800816U (en) | 2013-12-24 | 2013-12-24 | Driving signal amplification and switching circuit board for photovoltaic inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320857099.8U CN203800816U (en) | 2013-12-24 | 2013-12-24 | Driving signal amplification and switching circuit board for photovoltaic inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203800816U true CN203800816U (en) | 2014-08-27 |
Family
ID=51383002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320857099.8U Expired - Fee Related CN203800816U (en) | 2013-12-24 | 2013-12-24 | Driving signal amplification and switching circuit board for photovoltaic inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203800816U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111257711A (en) * | 2018-11-30 | 2020-06-09 | 臻驱科技（上海）有限公司 | Gate-level resistor automatic switching circuit and double-pulse automatic testing circuit |
-
2013
- 2013-12-24 CN CN201320857099.8U patent/CN203800816U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111257711A (en) * | 2018-11-30 | 2020-06-09 | 臻驱科技（上海）有限公司 | Gate-level resistor automatic switching circuit and double-pulse automatic testing circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20191224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |