CN105471234B - Fiber-optic signal change-over circuit for the driving of 3300V high-power IGBTs - Google Patents
Fiber-optic signal change-over circuit for the driving of 3300V high-power IGBTs Download PDFInfo
- Publication number
- CN105471234B CN105471234B CN201510941984.8A CN201510941984A CN105471234B CN 105471234 B CN105471234 B CN 105471234B CN 201510941984 A CN201510941984 A CN 201510941984A CN 105471234 B CN105471234 B CN 105471234B
- Authority
- CN
- China
- Prior art keywords
- bridge
- signal
- circuit
- lower bridge
- upper bridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
- H02M1/092—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices the control signals being transmitted optically
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Optical Communication System (AREA)
- Semiconductor Lasers (AREA)
Abstract
The present invention proposes the fiber-optic signal change-over circuit for the driving of 3300V high-power IGBTs, including upper bridge fiber-optic signal change-over circuit, lower bridge fiber-optic signal change-over circuit and the driving interlock circuit of bridge up and down being arranged between upper and lower bridge optical fiber changeover circuit, in upper bridge fiber-optic signal change-over circuit, upper bridge signal delay circuit enters after line delay to upper bridge drive signal is transferred to upper bridge amplifying circuit, the first optical transmitting set successively, and bridge drive circuit on IGBT is output to after being converted to optical signal by the first optical transmitting set；In lower bridge fiber-optic signal change-over circuit, lower bridge signal delay circuit enters after line delay to lower bridge drive signal is transferred to upper bridge amplifying circuit, the second optical transmitting set successively, and bridge drive circuit under IGBT is output to after being converted to optical signal by the second optical transmitting set；Upper and lower bridge driving interlock circuit realizes the interlocking of bridge two-way drive signal up and down.The present invention can not only realize the adjustment of the dead time between two IGBT drive signals of upper and lower bridge arm, it can also be ensured that two IGBT of upper and lower bridge arm will not be simultaneously turned on.
Description
Technical field
The present invention relates to a kind of fiber-optic signal change-over circuit for the driving of 3300V high-power IGBTs, belong to electroporation
Field.
Background technology
At present, the high-power mineral flame-proof type transducers of 1140V have obtained more and more extensive application in underground coal mine.
1140V big-power transducers typically use pressure-resistant 3300V high-power IGBT, FZ1200R33KF2C such as Infineon,
FZ800R33KF2C.The overall antijamming capability of consideration system, this IGBT driving inserting i.e. using CONCEPT companies more
With type driving plate such as 1SD536F2 and 1SP0635x2xx etc., drive signal and fault feedback signal use fiber-optic signal, driving electricity
Installed nearby with IGBT on road.
Optical fiber cable is made up of glass or plastics, so without directly electric between optical fiber connection transmitter and receiver
Connection, energy isolation voltage, to prevent from interfering, does not produce spurious radiation, insensitive to EMI.So driving and controlling electricity
Between road PWM can be accurately conducted with optical fiber（Pulse width modulation）Signal, not only solve power circuit and control circuit it
Between strong and weak electricity isolation, electromagnetism interference problem, and the long-distance transmissions of drive signal can also be realized.Other the one of optical fiber
Individual feature can be achieved on signal High Speed Transfer, when reducing propagation delay time.
Using this fiber-optic signal be driven signal transmission and isolation, it is necessary to master control borad and IGBT drive circuit it
Between increase fiber-optic signal change-over circuit, as shown in Figure 1.Master control borad generates 6 road PWM drive signal, and 6 road electric signals are believed by optical fiber
Number change-over circuit is converted to optical signal, is transferred to through optical fiber after IGBT drive circuit is amplified processing, driving IGBT work.Together
When, the fault feedback signal of IGBT drive circuit is also by optical fiber, and Real-time Feedback is to control circuit.With screw by IGBT driving board
On IGBT, IGBT gate electrode drive signals is transmitted on most short circuit, greatly reduce electromagnetic interference
Probability, control circuit is more accurately judged, control IGBT working condition, so as to ensure that system monolithic stability works.
Therefore, developing a kind of fiber-optic signal change-over circuit that 6 road PWM drive signals can be converted to optical signal becomes particularly to weigh
Will.
The content of the invention
The invention overcomes the deficiencies of the prior art, and provides a kind of light for the driving of 3300V high-power IGBTs
Optical fiber signaling change-over circuit.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：One kind is used for 3300V high-power IGBTs and driven
Dynamic fiber-optic signal change-over circuit, including upper bridge fiber-optic signal change-over circuit, lower bridge fiber-optic signal change-over circuit and be arranged on
The driving interlock circuit of bridge up and down between lower bridge optical fiber changeover circuit, upper bridge fiber-optic signal change-over circuit are delayed including upper bridge signal
Circuit and upper bridge amplifying circuit, lower bridge fiber-optic signal change-over circuit include lower bridge signal delay circuit and lower bridge amplifying circuit；Institute
The signal input part for stating bridge signal delay circuit is connected with upper bridge PWM drive signal, and the signal of the upper bridge amplifying circuit is defeated
Enter end be connected with the signal output part of the upper bridge signal delay circuit, the signal output part of the upper bridge amplifying circuit with it is described
The signal input part of first optical transmitting set is connected, and the upper bridge signal delay circuit is used for the forward position to upper bridge PWM drive signal
The upper bridge amplifying circuit is transferred to after entering line delay, the upper bridge amplifying circuit is used to the upper bridge PWM after delay driving letter
First optical transmitting set is transferred to after number amplification, and first optical transmitting set is used for the upper bridge PWM drive signal after amplification
Bridge drive circuit on IGBT is output to after being converted to optical signal；The signal input part of the lower bridge signal delay circuit and lower bridge
PWM drive signal is connected, the signal output of the signal input part of the lower bridge amplifying circuit and the lower bridge signal delay circuit
End is connected, and the signal output part of the lower bridge amplifying circuit is connected with the signal input part of second optical transmitting set, under described
Bridge signal delay circuit is used to enter after line delay to be transferred to the upper bridge amplifying circuit, institute to the forward position of lower bridge PWM drive signal
Bridge amplifying circuit is stated to be used to that second optical transmitting set will to be transferred to after the upper bridge PWM drive signal amplification after delay, it is described
Second optical transmitting set is used to be output to bridge driving electricity under IGBT after the lower bridge PWM drive signal after amplification is converted into optical signal
Road；The signal input part and the upper bridge signal delay circuit and lower bridge signal delay circuit of the driving interlock circuit of bridge up and down
Signal output part connection, the signal output part of signal output part and the upper bridge amplifying circuit and the lower bridge amplifying circuit connects
Connect, the driving interlock circuit is used to, when lower bridge drive signal is high, drag down the upper bridge for being transferred to first optical transmitting set
PWM drive signal, and, when upper bridge drive signal is high, drag down the lower bridge PWM drivings for being transferred to second optical transmitting set
Signal.
The described fiber-optic signal change-over circuit for being used for the driving of 3300V high-power IGBTs, in addition to for receiving respectively
The fault feedback signal of lower bridge IGBT drive circuit, and pass through the upper bridge failure indicating circuit of diode displaying and the event of lower bridge
Hinder indicating circuit, the upper bridge failure indicating circuit includes upper bridge optical receiver, the first NAND gate, the first light emitting diode and the
One resistance, the upper bridge optical receiver receive the fault feedback signal of upper bridge IGBT drive circuit, and are converted into electric signal conveying
To a signal input part of the upper NAND gate of bridge first, another input of first NAND gate is believed with the upper bridge
The signal output part of number delay circuit is connected, and the signal output part of the NAND gate is connected with the negative pole of the light emitting diode,
The positive pole of first light emitting diode is connected with first resistor, and the other end of the first resistor is connected with positive source；Institute
Stating lower bridge failure indicating circuit includes lower bridge optical receiver, the second NAND gate, the second light emitting diode and second resistance, under described
Bridge optical receiver receives the fault feedback signal of lower bridge IGBT drive circuit, and be converted into electric signal be conveyed to described second with it is non-
One signal input part of door, the signal of another input of second NAND gate and the lower bridge signal delay circuit are defeated
Going out end to be connected, the signal output part of the NAND gate is connected with the negative pole of second light emitting diode, and described second luminous two
The positive pole of pole pipe is connected with second resistance, and the other end of the second resistance is connected with positive source.
The upper bridge signal delay circuit includes upper bridge potentiometer, upper bridge electric capacity, upper bridge delay NAND gate, upper bridge PWM drives
Dynamic signal is divided into two-way, and a signal input part with the upper bridge delay NAND gate is connected all the way, and another way is through the upper bridge
After potentiometer with another signal input part of the upper bridge delay NAND gate, the signal output part of the upper bridge adjustable potentiometer
It is connected to the ground by the upper bridge electric capacity；The lower bridge signal delay circuit includes lower bridge potentiometer, lower bridge electric capacity, lower bridge delay
NAND gate, lower bridge PWM drive signal are divided into two-way, and a signal input part with the lower bridge delay NAND gate is connected all the way,
Another signal input part of another way after the lower bridge potentiometer with the lower bridge delay NAND gate, the lower bridge adjustable electric
The signal output part of position device is connected to the ground by the lower bridge electric capacity.
The upper bridge amplifying circuit includes upper bridge first resistor, upper bridge second resistance, and upper bridge first crystal triode is described
One end of upper bridge first resistor is connected with the signal output part of the upper bridge signal delay circuit, the upper bridge first resistor it is another
One end is connected with the base stage of the upper bridge first crystal triode, the emitter stage of the upper bridge first crystal triode and described the
The signal input part of one optical transmitting set is connected, and one end of the upper bridge second resistance is connected with positive source, the other end with it is described
The emitter stage of upper bridge first crystal triode is connected；The lower bridge amplifying circuit includes lower bridge first resistor, lower bridge second resistance,
Lower bridge first crystal triode, one end of the lower bridge first resistor and the signal output part phase of the lower bridge signal delay circuit
Even, the other end of the lower bridge first resistor is connected with the base stage of the lower bridge first crystal triode, and the lower bridge first is brilliant
The emitter stage of body triode is connected with the signal input part of first optical transmitting set, one end and the electricity of the lower bridge second resistance
Source positive pole is connected, and the other end is connected with the emitter stage of the lower bridge first crystal triode.
The driving interlock circuit of bridge up and down includes upper bridge lock-in circuit and lower bridge lock-in circuit, the upper bridge lock-in circuit
Including upper bridge 3rd resistor, the upper transistor of bridge second, one end of the upper bridge 3rd resistor with the lower bridge delay electricity
The signal output part on road is connected, the base stage phase of the other end of the upper bridge 3rd resistor and the upper transistor of bridge second
Even, the colelctor electrode of the upper transistor of bridge second is connected with the signal input part of first optical transmitting set, the upper bridge
The grounded emitter of transistor；The lower bridge lock-in circuit includes lower bridge 3rd resistor, the lower transistor of bridge second, institute
The one end for stating lower bridge 3rd resistor is connected with the signal output part of the lower bridge delay circuit, the lower bridge 3rd resistor it is another
End is connected with the base stage of the lower transistor of bridge second, the colelctor electrode and described first of the lower transistor of bridge second
The signal input part of optical transmitting set is connected, the grounded emitter of the lower bridge transistor.
The described fiber-optic signal change-over circuit for being used for the driving of 3300V high-power IGBTs, in addition to bridge optical fiber is believed on second
Number change-over circuit, second time bridge fiber-optic signal change-over circuit and it is arranged on bridge fiber-optic signal change-over circuit and second time bridge on second
Bridge fiber-optic signal change-over circuit, the on about the second bridge driving interlock circuit, and the 3rd between fiber-optic signal change-over circuit
Three times bridge fiber-optic signal change-over circuits and it is arranged on bridge fiber-optic signal change-over circuit and the three times bridge fiber-optic signals on the described 3rd
About the 3rd bridge driving interlock circuit between change-over circuit.
Compared with prior art, the invention has the advantages that：（1）PWM electric signals can be converted to optical signal
It is transferred to IGBT drive circuit；（2）The delay of adjustable pwm signal, realize between two IGBT drive signals of upper and lower bridge arm
The adjustment of dead time；（3）The interlocking of two-way drive signal up and down is realized, ensures that two IGBT of upper and lower bridge arm will not be led simultaneously
It is logical；（4）Fault feedback signal is switched into electric signal, carries out indicating fault.
Brief description of the drawings
Fig. 1 is the operation principle for driving IGBT using fiber-optic signal in the prior art；
Fig. 2 is a kind of circuit block diagram of fiber-optic signal change-over circuit for the driving of 3300V high-power IGBTs of the present invention；
Fig. 3 is a kind of circuit connection diagram of fiber-optic signal change-over circuit for the driving of 3300V high-power IGBTs of the present invention.
Embodiment
In order to further appreciate that the present invention substantive distinguishing features, the present invention is done with specific embodiment below in conjunction with the accompanying drawings into
The explanation of one step, due to 3 tunnel IGBT drive circuits be it is substantially equivalent, therefore, it is proposed by the present invention be used for 3300V it is high-power
What 6 road circuits in the fiber-optic signal change-over circuit of IGBT drivings were made up of three circuits comprising upper and lower bridge two-way, in order to
Description is convenient, and only one of them circuit for including upper and lower bridge two-way is described in detail for following examples.
As shown in Fig. 2 a kind of fiber-optic signal for the driving of 3300V high-power IGBTs that the embodiment of the present invention one provides turns
Change circuit, including upper bridge fiber-optic signal change-over circuit, lower bridge fiber-optic signal change-over circuit and be arranged on bridge optical fiber conversion electricity up and down
The driving interlock circuit of bridge up and down between road, wherein, upper bridge fiber-optic signal change-over circuit includes upper bridge signal delay adjustment circuit
With upper bridge amplifying circuit, lower bridge fiber-optic signal change-over circuit includes lower bridge signal delay adjustment circuit and lower bridge amplifying circuit.
The signal input part of upper bridge signal delay circuit is connected with upper bridge drive signal PWM1, the signal of upper bridge amplifying circuit
Input is connected with the signal output part of upper bridge signal delay circuit, and the signal output part of upper bridge amplifying circuit and the first light are launched
Device G3 signal input part is connected, and upper bridge signal delay circuit is used to after entering line delay to upper bridge drive signal PWM1 forward position pass
It is defeated to upper bridge amplifying circuit, upper bridge amplifying circuit to be used to that the first light to be transferred to after the upper bridge drive signal PWM1 amplifications after delay
Transmitter G3, the first optical transmitting set G3 after the upper bridge drive signal PWM1 after amplification is converted into optical signal for being output to IGBT
Upper bridge drive circuit.
The signal input part of lower bridge signal delay circuit is connected with lower bridge drive signal PWM2, the signal of lower bridge amplifying circuit
Input is connected with the signal output part of lower bridge signal delay circuit, and the signal output part of lower bridge amplifying circuit and the second light are launched
Device G4 signal input part is connected, and lower bridge signal delay circuit is used to after entering line delay to lower bridge drive signal PWM2 forward position pass
Defeated to arrive lower bridge amplifying circuit, lower bridge amplifying circuit is used to that the second light will to be transferred to after the lower bridge drive signal PWM2 amplifications after delay
Transmitter G4, the second optical transmitting set G4 after the lower bridge drive signal PWM2 after amplification is converted into optical signal for being output to IGBT
Lower bridge drive circuit.
By the adjustment of upper and lower bridge signal delay circuit, line delay can be entered to the forward position of the pwm signal of input, and prolong
When the time can be adjusted, so as to realize the adjustment of the dead time between two IGBT drive signals of upper and lower bridge arm.
The signal input part of upper and lower bridge driving interlock circuit and upper bridge signal delay circuit and lower bridge signal delay circuit
Signal output part is connected, and signal output part is connected with the signal output part of upper bridge amplifying circuit and lower bridge amplifying circuit, and driving is mutual
Lock circuit is used to, when lower bridge drive signal is high, drag down the upper bridge drive signal PWM1 for being transferred to the first optical transmitting set, and,
When upper bridge drive signal is high, the lower bridge drive signal PWM2 for being transferred to the second optical transmitting set is dragged down, therefore, upper and lower two-way drives
Dynamic signal will not will not simultaneously turn on for height, two IGBT of upper and lower bridge arm simultaneously, ensure that IGBT safety.
As shown in Fig. 2 a kind of fiber-optic signal for the driving of 3300V high-power IGBTs that the embodiment of the present invention one provides turns
Circuit is changed, in addition to for receiving the fault feedback signal of IGBT drive circuit, and the upper bridge event for passing through diode displaying
Hinder indicating circuit and lower bridge failure indicating circuit, when optical receiver G1 receives the failure feedback letter of upper bridge IGBT drive circuit
Number, the light emitting diode D1 electrified light emittings in upper bridge failure indicating circuit, indicate failure；When optical receiver G2 receives lower bridge
During the fault feedback signal of IGBT drive circuit, the light emitting diode D2 electrified light emittings in lower bridge failure indicating circuit, instruction event
Barrier.
A kind of as shown in figure 3, fiber-optic signal for the driving of 3300V high-power IGBTs provided for the embodiment of the present invention two
Change-over circuit, including upper bridge fiber-optic signal change-over circuit, lower bridge fiber-optic signal change-over circuit and it is arranged on bridge optical fiber conversion up and down
The driving interlock circuit of bridge up and down between circuit.
Wherein, in upper bridge fiber-optic signal change-over circuit, potentiometer W1, electric capacity C3, NAND gate U1B constitute bridge signal and prolonged
When circuit, upper bridge drive signal PWM1 point is two-way, and a signal input part with NAND gate U1B is joined directly together all the way, another
Road is connected after potentiometer W1 with NAND gate U1B another signal input part, in addition, potentiometer W1 signal output part is also logical
Cross electric capacity C3 to be connected to the ground, upper bridge drive signal PWM1 is also connected to the ground by resistance R3；Resistance R5, R9 and transistor Q1
Bridge amplifying circuit is constituted, resistance R5 one end is connected with the signal output part of upper bridge signal delay circuit, the other end and crystalline substance
Body triode Q1 base stage is connected, and transistor Q1 emitter stage is connected with optical transmitting set G3 signal input part, resistance R9
One end be connected with positive pole VCC, the other end is connected with transistor Q1 emitter stage；In addition, transistor Q1 colelctor electrodes
Ground connection.Upper bridge signal delay circuit is used for the delay for adjusting bridge drive signal PWM1, and upper bridge amplifying circuit will be used for after being delayed
Drive signal PWM1 amplifications after export and give optical transmitting set G3, optical transmitting set G3 is used to change the drive signal PWM1 after amplification
Into optical signal transmission to bridge drive circuit on IGBT.
Wherein, in lower bridge fiber-optic signal change-over circuit, potentiometer W2, electric capacity C4, NAND gate U2C constitute lower bridge signal and prolonged
When circuit, lower bridge drive signal PWM2 point is two-way, and a signal input part with NAND gate U2C is joined directly together all the way, another
Road is connected after potentiometer W2 with NAND gate U2C another signal input part, in addition, potentiometer W2 signal output part is also logical
Cross electric capacity C4 to be connected to the ground, lower bridge drive signal PWM2 is also connected to the ground by resistance R4；Resistance R6, R10 and transistor
Q2 constitutes bridge amplifying circuit, and resistance R6 one end is connected with the signal output part of lower bridge signal delay circuit, the other end with
Transistor Q2 base stage is connected, and transistor Q2 emitter stage is connected with optical transmitting set G4 signal input part, resistance
R10 one end is connected with positive pole VCC, and the other end is connected with transistor Q2 emitter stage；In addition, transistor Q1 current collections
Pole is grounded.Lower bridge signal delay circuit is used for the delay for adjusting lower bridge drive signal PWM2, and lower bridge amplifying circuit is used for will delay
Exported after drive signal PWM2 amplifications afterwards and give optical transmitting set G4, optical transmitting set G4 is used to turn the drive signal PWM2 after amplification
Optical signal transmission is changed into bridge drive circuit under IGBT.
In addition, upper bridge signal delay circuit also includes the NAND gate U1D between NAND gate U1B and resistance R5, it two
Signal output part of the individual signal incoming end with NAND gate U1B is connected, and its signal output part is connected with resistance R5；Lower bridge signal prolongs
When circuit also include NAND gate U2A between NAND gate U2C and resistance R6, two signal incoming end is and NAND gate
U1C signal output part is connected, and its signal output part is connected with resistance R6, and NAND gate U1D and NAND gate U2A are anti-for signal
To, upper bridge signal delay circuit and lower bridge signal delay circuit be used for respectively to the drive signal of above and below the PWM bridges of input before
Along line delay is entered, delay time is by potentiometer W1 and resistance C3（Or potentiometer W2 and resistance C4）Value together decide on, work as current potential
Device W1 is 10k Ω, and when C3 is 1 nF, the forward position of PWM1 drive signals, which can be achieved, 0 ~ 10us delay, therefore, by adjusting electricity
Position device W1 and potentiometer W2 value, can adjust the delay of PWM1 and PWM2 signals respectively, realize two IGBT drivings of upper and lower bridge arm
The adjustment of dead time between signal.
Wherein, in upper and lower bridge driving interlock circuit, resistance R8, transistor Q4, bridge lock-in circuit, resistance are constituted
R8 one end is connected with the signal output part of lower bridge delay circuit, the resistance R8 other end and transistor Q4 base stage phase
Even, transistor Q4 colelctor electrode is connected with optical transmitting set G3 signal input part, transistor Q4 grounded emitter；
Resistance R7, transistor Q3, constitute lower bridge lock-in circuit, resistance R7 one end and the signal output part of upper bridge delay circuit
It is connected, the resistance R7 other end is connected with transistor Q3 base stage, transistor Q3 colelctor electrode and optical transmitting set G4
Signal input part be connected, transistor Q3 grounded emitter.When upper bridge drive signal PWM1 is high, pass through resistance
R7, transistor Q3 effect, bridge optical transmitting set G4 input signal by the lower bridge drive signal of X3D points, that is, can be descended to draw
It is low；Instantly when bridge drive signal PWM2 is high, by resistance R8, transistor Q4 effect, the upper bridge of X3U points can be driven
Dynamic signal, i.e., upper bridge optical transmitting set G3 input signal drag down；Therefore, upper and lower bridge two-way drive signal will not be simultaneously height, on
Lower two IGBT of bridge arm will not be simultaneously turned on, and ensure that IGBT safety.
Wherein, optical transmitting set G3 and G4 can use Avago company (Avago) HFBR-1522, can be achieved direct current~
The high-quality transmission of 10MHz signals, therefore, the fiber-optic signal change-over circuit of the present embodiment not only will can turn PWM electric signals
Optical signal transmission is changed to IGBT drive circuit, the delay of also adjustable pwm signal, realizes two IGBT driving letters of upper and lower bridge arm
The adjustment of dead time between number；Also, the interlocking of upper and lower two-way drive signal can also be realized, ensures upper and lower bridge arm two
IGBT will not be simultaneously turned on.
In addition, a kind of fiber-optic signal change-over circuit for the driving of 3300V high-power IGBTs that the present embodiment provides also wraps
Include, for receiving the fault feedback signal of upper and lower bridge IGBT drive circuit, and the upper bridge event for passing through diode displaying respectively
Hinder indicating circuit and lower bridge failure indicating circuit.Wherein, upper bridge failure indicating circuit includes optical receiver G1, NAND gate U1A, hair
Optical diode D1 and resistance R1, the fault feedback signal of bridge IGBT drive circuit in optical receiver G1 receptions, and it is converted into telecommunications
Number it is conveyed to a NAND gate U1A signal input part, NAND gate U1A another signal input part and upper bridge signal delay electricity
The signal output part on road is connected, and NAND gate U1A signal output part is connected with light emitting diode D1 negative pole, light emitting diode D1
Positive pole be connected with resistance R1 one end, the resistance R1 other end is connected with positive source VCC；When upper bridge IGBT has driving to believe
Number, and the fault feedback signal of upper bridge IGBT drive circuit for it is high when, NAND gate U1A output low-voltage, light emitting diode D1
It is lit.
Lower bridge failure indicating circuit includes optical receiver G2, NAND gate U2B, light emitting diode D2 and resistance R2, light-receiving
Device G2 receives the fault feedback signal of lower bridge IGBT drive circuit, and is converted into the letter that electric signal is conveyed to NAND gate U2B
Number input, NAND gate U2B another input are connected with the signal output part of lower bridge signal delay circuit, NAND gate U2B
Signal output part be connected with light emitting diode D2 negative pole, light emitting diode D2 positive pole is connected with resistance R2, resistance R2's
The other end is connected with positive source VCC, and bridge IGBT has drive signal, and the failure feedback letter of lower bridge IGBT drive circuit instantly
Number for it is high when, NAND gate U2B output low-voltages, light emitting diode D2 is lit.
Wherein, optical receiver G1 and G2 can use Avago company (Avago) HFBR-2522, and fault-signal can be achieved
Timely transmission, therefore, the fiber-optic signal change-over circuit of the present embodiment can also switch to fault feedback signal electric signal, and lead to
Cross light emitting diode and carry out indicating fault.
In addition, only the wherein two-way of fiber-optic signal change-over circuit is described in detail for above-described embodiment, it should clearly
, a kind of fiber-optic signal change-over circuit for the driving of 3300V high-power IGBTs provided by the invention, not merely it is only limited to
Above-mentioned bridge two-way fiber-optic signal change-over circuit up and down, can also include bridge fiber-optic signal change-over circuit, second time bridge light on second
Optical fiber signaling change-over circuit and be arranged on second between bridge optical fiber changeover circuit and second time bridge optical fiber changeover circuit second on
Bridge fiber-optic signal change-over circuit, the three times bridge fiber-optic signal change-over circuits and setting on lower bridge driving interlock circuit, and the 3rd
About the 3rd bridge driving interlocking on the 3rd between bridge fiber-optic signal change-over circuit and the three times bridge fiber-optic signal change-over circuits
Circuit, the wherein specific features of second, third upper and lower bridge fiber-optic signal change-over circuit and the above-mentioned fiber-optic signal of bridge up and down are changed
Circuit is identical, and the specific features of second, third upper and lower bridge driving interlock circuit are identical with the above-mentioned driving interlock circuit of bridge up and down,
So that above-mentioned three tunnel bridge up and down, 6 road fiber-optic signal change-over circuits can be used for the fiber-optic signal of three-phase IGBT drivings altogether
Conversion and propagation.
Embodiments of the invention are explained in detail above in conjunction with accompanying drawing, but the present invention is not limited to above-mentioned implementation
Example, in those of ordinary skill in the art's possessed knowledge, can also make on the premise of present inventive concept is not departed from
Go out various change.
Claims (5)
1. a kind of fiber-optic signal change-over circuit for the driving of 3300V high-power IGBTs, including upper bridge fiber-optic signal change-over circuit,
Lower bridge fiber-optic signal change-over circuit and the driving interlock circuit of bridge up and down being arranged between upper and lower bridge optical fiber changeover circuit, its feature
It is, the upper bridge fiber-optic signal change-over circuit includes upper bridge signal delay circuit and upper bridge amplifying circuit, the lower bridge optical fiber
Signaling conversion circuit includes lower bridge signal delay circuit and lower bridge amplifying circuit；
The signal input part of the upper bridge signal delay circuit is connected with upper bridge PWM drive signal, the upper bridge amplifying circuit
Signal input part is connected with the signal output part of the upper bridge signal delay circuit, the signal output part of the upper bridge amplifying circuit
It is connected with the signal input part of the first optical transmitting set, before the upper bridge signal delay circuit is used for upper bridge PWM drive signal
The upper bridge amplifying circuit is transferred to along entering after line delay, the upper bridge amplifying circuit is used to drive the upper bridge PWM after delay
First optical transmitting set is transferred to after signal amplification, first optical transmitting set is used to the upper bridge PWM after amplification driving letter
Bridge drive circuit on IGBT is output to after number being converted to optical signal；
The signal input part of the lower bridge signal delay circuit is connected with lower bridge PWM drive signal, the lower bridge amplifying circuit
Signal input part is connected with the signal output part of the lower bridge signal delay circuit, the signal output part of the lower bridge amplifying circuit
It is connected with the signal input part of the second optical transmitting set, before the lower bridge signal delay circuit is used for lower bridge PWM drive signal
The lower bridge amplifying circuit is transferred to along entering after line delay, the lower bridge amplifying circuit is used to drive the lower bridge PWM after delay
Second optical transmitting set is transferred to after signal amplification, second optical transmitting set is used to the lower bridge PWM after amplification driving letter
Bridge drive circuit under IGBT is output to after number being converted to optical signal；
The signal input part of the driving interlock circuit of bridge up and down and the upper bridge signal delay circuit and lower bridge signal delay electricity
The signal output part connection on road, signal output part and the upper bridge amplifying circuit and the signal output part of the lower bridge amplifying circuit
Connection, the driving interlock circuit are used to, when lower bridge drive signal is high, drag down and be transferred to the upper of first optical transmitting set
Bridge PWM drive signal, and, when upper bridge drive signal is high, drag down the lower bridge PWM drives for being transferred to second optical transmitting set
Dynamic signal；
Also include being used for the fault feedback signal for receiving bridge IGBT drive circuit up and down respectively, and pass through diode displaying
Upper bridge failure indicating circuit and lower bridge failure indicating circuit, the upper bridge failure indicating circuit include upper bridge optical receiver, and first
NAND gate, the first light emitting diode and first resistor, the failure that the upper bridge optical receiver receives upper bridge IGBT drive circuit are anti-
Feedback signal, and be converted into the signal input part that electric signal is conveyed to first NAND gate, first NAND gate it is another
One input is connected with the signal output part of the upper bridge signal delay circuit, the signal output part of first NAND gate with
The negative pole of first light emitting diode is connected, and the positive pole of first light emitting diode is connected with first resistor, and described first
The other end of resistance is connected with positive source；
The lower bridge failure indicating circuit includes lower bridge optical receiver, the second NAND gate, the second light emitting diode and second resistance,
The lower bridge optical receiver receives the fault feedback signal of lower bridge IGBT drive circuit, and is converted into electric signal and is conveyed to described the
One signal input part of two NAND gates, another input of second NAND gate and the lower bridge signal delay circuit
Signal output part is connected, and the signal output part of second NAND gate is connected with the negative pole of second light emitting diode, described
The positive pole of second light emitting diode is connected with second resistance, and the other end of the second resistance is connected with positive source.
2. the fiber-optic signal change-over circuit according to claim 1 for the driving of 3300V high-power IGBTs, its feature exists
In the upper bridge signal delay circuit includes upper bridge potentiometer, upper bridge electric capacity, upper bridge delay NAND gate, upper bridge PWM drive signal
It is divided into two-way, a signal input part with the upper bridge delay NAND gate is connected all the way, and another way is through the upper bridge potentiometer
Another signal input part with the upper bridge delay NAND gate is connected afterwards, and the signal output part of the upper bridge potentiometer passes through institute
Bridge electric capacity is stated to be connected to the ground；
The lower bridge signal delay circuit includes lower bridge potentiometer, lower bridge electric capacity, lower bridge delay NAND gate, lower bridge PWM drivings letter
Number it is divided into two-way, a signal input part with the lower bridge delay NAND gate is connected all the way, and another way is through the lower bridge current potential
Another signal input part after device with the lower bridge delay NAND gate is connected, and the signal output part of the lower bridge potentiometer passes through
The lower bridge electric capacity is connected to the ground.
3. the fiber-optic signal change-over circuit according to claim 1 for the driving of 3300V high-power IGBTs, its feature exists
In the upper bridge amplifying circuit includes upper bridge first resistor, upper bridge second resistance, upper bridge first crystal triode, the upper bridge
One end of first resistor is connected with the signal output part of the upper bridge signal delay circuit, the other end of the upper bridge first resistor
It is connected with the base stage of the upper bridge first crystal triode, emitter stage and first light of the upper bridge first crystal triode
The signal input part of transmitter is connected, and one end of the upper bridge second resistance is connected with positive source, the other end and the upper bridge
The emitter stage of first crystal triode is connected；
The lower bridge amplifying circuit includes lower bridge first resistor, lower bridge second resistance, lower bridge first crystal triode, the lower bridge
One end of first resistor is connected with the signal output part of the lower bridge signal delay circuit, the other end of the lower bridge first resistor
It is connected with the base stage of the lower bridge first crystal triode, emitter stage and second light of the lower bridge first crystal triode
The signal input part of transmitter is connected, and one end of the lower bridge second resistance is connected with positive source, the other end and the lower bridge
The emitter stage of first crystal triode is connected.
4. the fiber-optic signal change-over circuit according to claim 1 for the driving of 3300V high-power IGBTs, its feature exists
In the driving interlock circuit of bridge up and down includes upper bridge lock-in circuit and lower bridge lock-in circuit, and the upper bridge lock-in circuit includes
Upper bridge 3rd resistor, the upper transistor of bridge second, one end of the upper bridge 3rd resistor and the lower bridge signal delay circuit
Signal output part be connected, the other end of the upper bridge 3rd resistor is connected with the base stage of the upper transistor of bridge second,
The colelctor electrode of the transistor of upper bridge second is connected with the signal input part of first optical transmitting set, the upper bridge second
The grounded emitter of transistor；
The lower bridge lock-in circuit includes lower bridge 3rd resistor, the lower transistor of bridge second, and the one of the lower bridge 3rd resistor
End is connected with the signal output part of the upper bridge signal delay circuit, the other end of the lower bridge 3rd resistor and the lower bridge the
The base stage of two transistors is connected, the colelctor electrode of the lower transistor of bridge second and the signal of second optical transmitting set
Input is connected, the grounded emitter of the lower transistor of bridge second.
5. the fiber-optic signal change-over circuit for being used for 3300V high-power IGBTs and driving according to any in claim 1-4, its
It is characterised by, in addition to bridge fiber-optic signal change-over circuit, second time bridge fiber-optic signal change-over circuit and second is arranged on second
About the second bridge driving interlock circuit between upper bridge fiber-optic signal change-over circuit and second time bridge fiber-optic signal change-over circuit, with
And bridge fiber-optic signal change-over circuit, the three times bridge fiber-optic signal change-over circuits and it is arranged on the described 3rd bridge optical fiber on the 3rd and believes
About the 3rd bridge driving interlock circuit number between change-over circuit and the three times bridge fiber-optic signal change-over circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510941984.8A CN105471234B (en) | 2015-12-16 | 2015-12-16 | Fiber-optic signal change-over circuit for the driving of 3300V high-power IGBTs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510941984.8A CN105471234B (en) | 2015-12-16 | 2015-12-16 | Fiber-optic signal change-over circuit for the driving of 3300V high-power IGBTs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105471234A CN105471234A (en) | 2016-04-06 |
| CN105471234B true CN105471234B (en) | 2018-02-23 |
Family
ID=55608649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510941984.8A Active CN105471234B (en) | 2015-12-16 | 2015-12-16 | Fiber-optic signal change-over circuit for the driving of 3300V high-power IGBTs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105471234B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112332640B (en) * | 2020-10-27 | 2022-04-19 | 深圳市海浦蒙特科技有限公司 | IGBT drive circuit and IGBT circuit |
| CN113890525A (en) * | 2021-10-25 | 2022-01-04 | 北京英瑞来科技有限公司 | Communication interference defense circuit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1447513A (en) * | 2002-03-25 | 2003-10-08 | 哈尔滨九洲电气股份有限公司 | Single-phase bridge type inverter in high voltage frequency converter |
| CN102710330A (en) * | 2012-05-22 | 2012-10-03 | 青岛四方车辆研究所有限公司 | Compact type PWM (pulse-width modulation) optical fiber converter |
| CN202550982U (en) * | 2012-03-16 | 2012-11-21 | 浙江大学 | High-voltage pulse generator with IGBTs connected in series |
| CN202696456U (en) * | 2012-05-24 | 2013-01-23 | 中国矿业大学 | Two-way high-voltage and high-power IGBT (Insulated Gate Bipolar Translator) driving circuit |
| CN203416264U (en) * | 2013-07-26 | 2014-01-29 | 河南弘正电气科技有限公司 | IGBT drive signal fast optical fiber transmission device |
| CN203851012U (en) * | 2014-02-26 | 2014-09-24 | 北京天诚同创电气有限公司 | Large power IGBT parallel drive circuit applied to photovoltaic electric power generation |
| CN105119469A (en) * | 2015-08-28 | 2015-12-02 | 洛阳中重自动化工程有限责任公司 | Multi-path driving signal switching circuit for mining explosion-proof frequency converter and method |
-
2015
- 2015-12-16 CN CN201510941984.8A patent/CN105471234B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1447513A (en) * | 2002-03-25 | 2003-10-08 | 哈尔滨九洲电气股份有限公司 | Single-phase bridge type inverter in high voltage frequency converter |
| CN202550982U (en) * | 2012-03-16 | 2012-11-21 | 浙江大学 | High-voltage pulse generator with IGBTs connected in series |
| CN102710330A (en) * | 2012-05-22 | 2012-10-03 | 青岛四方车辆研究所有限公司 | Compact type PWM (pulse-width modulation) optical fiber converter |
| CN202696456U (en) * | 2012-05-24 | 2013-01-23 | 中国矿业大学 | Two-way high-voltage and high-power IGBT (Insulated Gate Bipolar Translator) driving circuit |
| CN203416264U (en) * | 2013-07-26 | 2014-01-29 | 河南弘正电气科技有限公司 | IGBT drive signal fast optical fiber transmission device |
| CN203851012U (en) * | 2014-02-26 | 2014-09-24 | 北京天诚同创电气有限公司 | Large power IGBT parallel drive circuit applied to photovoltaic electric power generation |
| CN105119469A (en) * | 2015-08-28 | 2015-12-02 | 洛阳中重自动化工程有限责任公司 | Multi-path driving signal switching circuit for mining explosion-proof frequency converter and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105471234A (en) | 2016-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105471234B (en) | Fiber-optic signal change-over circuit for the driving of 3300V high-power IGBTs | |
| CN102857081B (en) | Inversion driving circuit for IGBT (insulated gate bipolar transistor) induction heating power source | |
| CN201622698U (en) | LED traffic signal lamp control system based on low-voltage transmission and power supply | |
| CN206878449U (en) | A kind of motor safety torque turning off system based on safety circuit | |
| CN101788870A (en) | Multi-frequency scanning infrared touch device | |
| CN205725438U (en) | A kind of IGBT drive circuit with dual resisteance | |
| CN204886677U (en) | Be applicable to train high pressure IGBT drive arrangement | |
| CN204349439U (en) | The anti-straight-through drive circuit of magnetic latching relay of a kind of Intelligent capacitor | |
| CN103124133B (en) | The implementation method of a kind of unit 8 IGBT driver and isolation drive and protection | |
| CN101662154B (en) | Link control panel of IGBT valve of chain static synchronous compensator | |
| CN106208818B (en) | A kind of mutual exclusion driving circuit of motor H bridge | |
| CN204578505U (en) | A kind of drive singal digital processing circuit cascade system for IGBT | |
| CN201403046Y (en) | Parallel connection IGBT difference interface drive unit based on FPGA | |
| CN106452044A (en) | Signal interlock circuit for preventing short circuit of APF (active power filter) driving circuits | |
| CN202696456U (en) | Two-way high-voltage and high-power IGBT (Insulated Gate Bipolar Translator) driving circuit | |
| CN202818081U (en) | Inversion drive circuit of IGBT induction heating power source | |
| CN206097477U (en) | Crossroad traffic light control system based on vehicle flowrate | |
| CN203233299U (en) | IGBT drive circuit for braking of urban rail vehicle traction converter | |
| CN104579261A (en) | PWM signal isolation interlocking and drive amplifying circuit and motor controller | |
| CN107765094A (en) | A kind of photovoltaic battery panel PID prosthetic devices | |
| CN201577220U (en) | Sending-receiving buffer unit for DMX512 lamps | |
| CN205265980U (en) | Tunnel response lighting control system | |
| CN208534288U (en) | A kind of door closer of belt switch state output | |
| CN206283408U (en) | A kind of isolated form high-precision current Balance route component | |
| CN103108461A (en) | Light-emitting diode (LED) color temperature adjusting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |