CN110429802A - High-power IGBT drive control plate and control method based on optical fiber technology - Google Patents
High-power IGBT drive control plate and control method based on optical fiber technology Download PDFInfo
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- CN110429802A CN110429802A CN201910754452.1A CN201910754452A CN110429802A CN 110429802 A CN110429802 A CN 110429802A CN 201910754452 A CN201910754452 A CN 201910754452A CN 110429802 A CN110429802 A CN 110429802A
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 143
- 238000005516 engineering process Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims description 18
- 238000001514 detection method Methods 0.000 claims abstract description 73
- 238000002955 isolation Methods 0.000 claims description 19
- 230000003321 amplification Effects 0.000 claims description 17
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 14
- 238000011897 real-time detection Methods 0.000 claims description 14
- 230000003287 optical effect Effects 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 5
- 239000003381 stabilizer Substances 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims 1
- 230000008676 import Effects 0.000 abstract description 3
- 230000006866 deterioration Effects 0.000 abstract description 2
- 239000003990 capacitor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003760 hair shine Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
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- 238000004806 packaging method and process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
-
- 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
-
- 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
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Abstract
The high-power IGBT drive control plate based on optical fiber technology that the present invention provides a kind of, which is characterized in that including IGBT drive control circuit；The IGBT drive control circuit includes power module, optical fiber input module, drive control module, power detection module, over-current detection module, state feedback module and optical fiber output module；The present invention is based on the high-power IGBT drive control plates of optical fiber technology, environment instantly is catered to, to provide update replacement optinal plan with the driving plate of same specification always both at home and abroad, the buying of import finished product is replaced also to solve client for the suspection of the component deterioration by independent research, and reliable technical support and the after-sale service of profession in time can be provided and not only reduce cost for imported product, improve efficiency, moreover it is possible to provide better service.
Description
Technical field
The present invention relates to IGBT control technology fields, and in particular, to a kind of high-power IGBT drive based on optical fiber technology
Dynamic control panel and control method more particularly to a kind of railcar large power of traction system IGBT drive control plate.
Background technique
In railcar trailer system, the inversion of traction invertor and chop control are by the logical of high power transistor IGBT
Break to realize, IGBT Drive Control Technique serves key in railcar trailer system.
As patent document discloses a kind of IGBT drive control circuit of CN206727977U, the setting of IGBT drive control circuit
Between control panel and IGBT module, including driving circuit, pwm control circuit, driving power circuit and fault detection circuit；
The signal input part of pwm control circuit is connect with control panel, the square-wave signal output end of pwm control circuit respectively with driving circuit
First input end connected with the first input end of fault detection circuit；On the voltage input termination control panel of driving power circuit
External power supply, the voltage signal output end of driving power circuit and the second input terminal of driving circuit connect；Driving circuit it is defeated
The connection of the input terminal of outlet and IGBT module；Second input terminal of fault detection circuit and the feedback output end of IGBT module connect
It connects, the output end of fault detection circuit is connect with control panel.
Meanwhile IGBT drive control plate, it is widely used in trailer system.Currently, what railcar trailer system used
Major brand such as SIEMENS, ALSTOM, BOMBARDIER.
In recent years, the traction control environment division component used on current vehicle reaches design service life in succession,
IGBT drive control plate welcomes the situation of extensive aging, damage.And the spare part delivery cycle of original-pack brand is long, price is high, lacks
Weary later period technical support.The continuous improvement that the country recognizes technology in this respect, it is believed that the integrated level of the component is limited, with regard to cost and
Selling price is more excessive than difference, and import price is excessively high, and the period is long, and it is desirable that is capable of providing technology branch in IGBT driving board failure
It holds, does not influence to repair or provide Improving advice in the case where basic performance, and these demand imported with original packaging cannot reach
It arrives.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of, and the high-power IGBT based on optical fiber technology drives
Dynamic control panel and control method.
A kind of high-power IGBT drive control plate based on optical fiber technology provided according to the present invention, including IGBT driving control
Circuit processed；The IGBT drive control circuit includes power module, optical fiber input module, drive control module, power detecting mould
Block, over-current detection module, state feedback module and optical fiber output module；
The optical fiber input module, one end are connected with optical fiber input/output interface, and the other end is connected with drive control module；
The drive control module, one end are connected with optical fiber input module, and the other end is connected by IGBT interface with IGBT base stage；It is described
Power detection module is connected with drive control module, state feedback module respectively；The over-current detection module, one end passes through IGBT
Interface is connected with IGBT collector and emitter, and the other end is connected with drive control module；The state feedback module drives respectively
Dynamic control module, optical fiber output module are connected；The optical fiber output module, one end are connected with state feedback module, the other end with
Optical fiber input/output interface is connected；The power module, one end are connected with power interface, and the other end is described based on optical fiber technology
High-power IGBT drive control plate provide the energy.
Preferably, IGBT drive control circuit described in 2 groups controls 2 Shang Qiao in inverter, lower bridge IGBT respectively；The electricity
Source module generates 2 road isolated power supplies and uses for 2 road IGBT drive control circuits.
Preferably, the setting power supply that the power module is inputted by power interface exports 2 road DC power supplies；The electricity
Source module includes the isolating transformer of setting, the setting power supply of input, the first output DC power supply and the second direct current output electricity
Press electrical isolation between this three.
Preferably, the optical fiber input module is connected by optical fiber with host computer, host computer and described based on optical fiber technology
High-power IGBT drive control plate between electrical isolation；The optical fiber input module includes photo-coupler, can turn optical signal
It is changed to electric signal.
Preferably, the drive control module includes nor gate logic circuit, multi-resonant oscillating circuit and drive amplification electricity
Road；
3 input terminals of nor gate logic circuit respectively with optical fiber input module, power detection module, over-current detection module
It is connected；An output signal and drive amplification circuit connection, another output signal and multi-harmonic-oscillations for nor gate logic circuit
Circuit connection；The output signal of multi-resonant oscillating circuit is connected with state feedback module；Drive amplification circuit is recommended using triode
The on-off of output control MOSFET；MOSFET output signal passes through build-out resistor and IGBT interface, is connected with the base stage of IGBT.
Preferably, the optical fiber output module is connected by optical fiber with host computer；The optical fiber output module includes optocoupler
Clutch, the electric signal that can export state feedback module are converted to optical signal.
Preferably, the high-power IGBT drive control plate based on optical fiber technology further includes that drive control plate test connects
Mouth, light emitting diode indicating module and IGBT base voltage protective module；
The drive control plate test interface can be by IGBT base drive signal, IGBT collector voltage signal, overcurrent
Detection circuit output signal, state feedback module output signal and working power anode and GND are drawn；
Light emitting diode indicating module includes LED, and passes through the working condition of LED indication state feedback module；
IGBT base voltage protective module includes two voltage-stabiliser tubes, can be protected to IGBT base voltage, by base stage
Limiting voltage protects IGBT in the safe range of setting.
A kind of high-power IGBT drive control method based on optical fiber technology provided according to the present invention, utilizes above-mentioned base
In the high-power IGBT drive control plate of optical fiber technology, including power detecting step；
Power detecting step: power detection module includes power supply generative circuit and voltage comparator circuit；Power detection module
The power supply of isolating transformer output is detected, when reaching given threshold, enable signal is exported, controls drive control module
It starts to work；Power supply is converted to the output voltage of setting using voltage stabilizing chip by power supply generative circuit, is made for optical fiber input module
With；Voltage comparator carries out partial pressure sampling to power supply and compared with the setting output voltage of power supply generative circuit, and exports setting
Comparison result control drive control module work.
Preferably, the high-power IGBT drive control method based on optical fiber technology further includes over-current detection step；
Over-current detection step: the over-current detection module is connected by IGBT interface with the collector and emitter of IGBT,
The conduction voltage drop of real-time detection IGBT；When IGBT conduction voltage drop is greater than given threshold, alarm signal is exported；The over-current detection
The alarm signal of module output is connected with drive control module, and when alarm signal is effective, drive control module exports driving
Signal-off, output low level turn off IGBT；Meanwhile drive control module output fault-signal refers to state feedback module
Show IGBT operation irregularity.
Preferably, the high-power IGBT drive control method based on optical fiber technology further includes state feedback step；
State feedback step: state feedback module generates pwm signal using timer；Real-time detection drive control module is defeated
Fault-signal out, when fault-signal is invalid, state feedback module output 100KHz pwm signal to optical fiber output module, when
When fault-signal is effective, work feedback signal exports 0V to optical fiber output module.
Compared with prior art, the present invention have it is following the utility model has the advantages that
The present invention is based on the high-power IGBT drive control plates of optical fiber technology, have catered to environment instantly, for both at home and abroad always
It is provided with the driving plate of same specification and updates replacement optinal plan, structure is simple, at low cost.IGBT drive control plate using optical fiber and
Host computer connection carries out electrical isolation, and IGBT driving board power supply uses isolated power supply, and electromagnetism is dry when reducing drive control plate work
Disturb the influence to host computer.Capacitor and resistance value of the drive control module by adjusting oscillating circuit, adjustable IGBT driving
The delay of signal, it is simple and reliable.Power detection module is to working power real-time detection, and over-current detection module is to IGBT conduction pipe pressure
Real-time detection is dropped, blocks IGBT drive control circuit when failures are detected, protects IGBT, and fault-signal is fed back to upper
Machine.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is that the present invention is based on the high-power IGBT driving plate structural schematic diagrams of optical fiber technology；
Fig. 2 is the circuit diagram of drive control module preference in the present invention.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
A kind of high-power IGBT drive control plate based on optical fiber technology provided according to the present invention, including IGBT driving control
Circuit processed；The IGBT drive control circuit includes power module, optical fiber input module, drive control module, power detecting mould
Block, over-current detection module, state feedback module and optical fiber output module；
The optical fiber input module, one end are connected with optical fiber input/output interface, and the other end is connected with drive control module；
The drive control module, one end are connected with optical fiber input module, and the other end is connected by IGBT interface with IGBT base stage；It is described
Power detection module is connected with drive control module, state feedback module respectively；The over-current detection module, one end passes through IGBT
Interface is connected with IGBT collector and emitter, and the other end is connected with drive control module；The state feedback module drives respectively
Dynamic control module, optical fiber output module are connected；The optical fiber output module, one end are connected with state feedback module, the other end with
Optical fiber input/output interface is connected；The power module, one end are connected with power interface, and the other end is described based on optical fiber technology
High-power IGBT drive control plate provide the energy.
IGBT drive control circuit described in 2 groups controls 2 Shang Qiao in inverter, lower bridge IGBT respectively；The power module
2 road isolated power supplies are generated to use for 2 road IGBT drive control circuits.
The setting power supply that the power module is inputted by power interface exports 2 road DC power supplies；The power module packet
Include the isolating transformer of setting, the setting power supply of input, the first output DC power supply and the second DC output voltage this three
Between electrical isolation.
The optical fiber input module is connected by optical fiber with host computer, host computer and described based on the high-power of optical fiber technology
Electrical isolation between IGBT drive control plate；The optical fiber input module includes photo-coupler, can convert optical signals to telecommunications
Number.
The drive control module includes nor gate logic circuit, multi-resonant oscillating circuit and drive amplification circuit；
3 input terminals of nor gate logic circuit respectively with optical fiber input module, power detection module, over-current detection module
It is connected；An output signal and drive amplification circuit connection, another output signal and multi-harmonic-oscillations for nor gate logic circuit
Circuit connection；The output signal of multi-resonant oscillating circuit is connected with state feedback module；Drive amplification circuit is recommended using triode
The on-off of output control MOSFET；MOSFET output signal passes through build-out resistor and IGBT interface, is connected with the base stage of IGBT.
The optical fiber output module is connected by optical fiber with host computer；The optical fiber output module includes photo-coupler, energy
It is enough that the electric signal that state feedback module exports is converted into optical signal.
The high-power IGBT drive control plate based on optical fiber technology further includes drive control plate test interface, luminous two
Pole pipe indicating module and IGBT base voltage protective module；
The drive control plate test interface can be by IGBT base drive signal, IGBT collector voltage signal, overcurrent
Detection circuit output signal, state feedback module output signal and working power anode and GND are drawn；
Light emitting diode indicating module includes LED, and passes through the working condition of LED indication state feedback module；
IGBT base voltage protective module includes two voltage-stabiliser tubes, can be protected to IGBT base voltage, by base stage
Limiting voltage protects IGBT in the safe range of setting.
A kind of high-power IGBT drive control method based on optical fiber technology provided according to the present invention, utilizes above-mentioned base
In the high-power IGBT drive control plate of optical fiber technology, including power detecting step；
Power detecting step: power detection module includes power supply generative circuit and voltage comparator circuit；Power detection module
The power supply of isolating transformer output is detected, when reaching given threshold, enable signal is exported, controls drive control module
It starts to work；Power supply is converted to the output voltage of setting using voltage stabilizing chip by power supply generative circuit, is made for optical fiber input module
With；Voltage comparator carries out partial pressure sampling to power supply and compared with the setting output voltage of power supply generative circuit, and exports setting
Comparison result control drive control module work.
The high-power IGBT drive control method based on optical fiber technology further includes over-current detection step；
Over-current detection step: the over-current detection module is connected by IGBT interface with the collector and emitter of IGBT,
The conduction voltage drop of real-time detection IGBT；When IGBT conduction voltage drop is greater than given threshold, alarm signal is exported；The over-current detection
The alarm signal of module output is connected with drive control module, and when alarm signal is effective, drive control module exports driving
Signal-off, output low level turn off IGBT；Meanwhile drive control module output fault-signal refers to state feedback module
Show IGBT operation irregularity.
The high-power IGBT drive control method based on optical fiber technology further includes state feedback step；
State feedback step: state feedback module generates pwm signal using timer；Real-time detection drive control module is defeated
Fault-signal out, when fault-signal is invalid, state feedback module output 100KHz pwm signal to optical fiber output module, when
When fault-signal is effective, work feedback signal exports 0V to optical fiber output module.
Further, the present invention designs a kind of high-power IGBT drive control plate based on optical fiber technology, including power supply mould
Block, optical fiber input module, drive control module, power detection module, over-current detection module, state feedback module, optical fiber output
Module.It is characterized in that PC control signal carries out electrical isolation and signal by optical fiber input module and drive control module
Amplification, for controlling the turn-on and turn-off of IGBT；Power detection module is to working power real-time detection, over-current detection module pair
Tube voltage drop real-time detection is connected in IGBT, blocks IGBT drive control circuit when failures are detected；The work shape of drive control plate
State is through optical fiber output module feedback to host computer.A kind of high-power IGBT drive control plate based on optical fiber technology of the invention,
Catered to environment instantly, for both at home and abroad always with the driving plate of same specification provide update replacement optinal plan, with imported product and
Speech, structure are simple, at low cost.
A kind of high-power IGBT drive control plate based on optical fiber technology that preference of the present invention provides, including power supply mould
Block, optical fiber input module, drive control module, power detection module, over-current detection module, state feedback module, optical fiber output
Module.
The optical fiber input module, one end are connected with optical fiber input/output interface, and the other end is connected with drive control module；
The drive control module, one end are connected with optical fiber input module, and the other end is connected by IGBT interface with IGBT base stage；It is described
Power detection module is connected with drive control module, while being connected with state feedback module；The over-current detection module, one end are logical
It crosses IGBT interface to be connected with IGBT collector and emitter, the other end is connected with drive control module；The state feedback module,
It is connected with drive control module, while is connected with optical fiber output module；The optical fiber output module, one end and state feedback module
It is connected, the other end is connected with optical fiber input/output interface；The power module, one end are connected with power interface, and the other end generates
Two-way isolated power supply is used for two-way IGBT drive control circuit.
Preference of the present invention further includes two groups of IGBT drive control circuits, for controlling Shang Qiao and two, lower bridge in inverter
IGBT, two groups of control circuits are powered using the two-way isolated power supply of power module output.
The power module inputs 15V DC power supply by power interface, exports two-way DC power supply, per power supply packet all the way
Include+15V, 0V, -10V output；The power module is using customization isolating transformer, input power and output two-way power sourced electric
Isolation, also electrical isolation between two-way out-put supply；
Optical fiber input module is connected using optical fiber with host computer, host computer and IGBT drive control plate electrical isolation；Optical fiber
Input module uses photo-coupler, converts optical signals to electric signal；
The drive control module uses one-shot multivibrator, by adjusting the capacitor and resistance value of oscillating circuit,
The delay of adjustable IGBT driving signal；
The drive control module includes drive amplification circuit, and drive amplification circuit uses two triode push-pull output controls
Make the on-off of two MOSFET；MOSFET output signal passes through build-out resistor and IGBT interface, is connected with the base stage of IGBT；
Optical fiber output module uses photo-coupler, and the electric signal that state feedback module exports is converted to optical signal, uses
Optical fiber is connect with host computer；
The high-power IGBT drive control plate based on optical fiber technology further include: drive control plate test interface shines
Diode indicating module, IGBT base voltage protective module；
Drive control plate test interface: by IGBT base drive signal, IGBT collector voltage signal, over-current detection circuit
Output signal, state feedback module output signal and working power anode and GND are drawn, and facilitate test and detection；
Light emitting diode indicating module: using the working condition of LED indication state feedback module；
IGBT base voltage protective module: IGBT base voltage is protected using two voltage-stabiliser tubes, by base voltage
It limits in safe range, protects IGBT.
The high-power IGBT drive control method based on optical fiber technology that preference provides according to the present invention, specific as follows:
Power detection module is made of 5V power supply generative circuit and voltage comparator circuit；Power detection module is to isolation transformation
The 15V power supply of device output is detected, and when reaching given threshold, exports enable signal, control drive control module starts work
Make.15V power supply is converted to 5V power supply using three-terminal regulator chip by 5V power supply generative circuit, is used for optical fiber input module；Electricity
Pressure comparator carries out partial pressure sampling to 15V power supply and compared with 5V power supply, and when 15V power supply is from 0 to 13.7V, comparator output is low
Level, drive control module stop working；Comparator exports high level after 15V power supply is more than 13.7V, and drive control module is just
Often work；
The over-current detection module is connected by IGBT interface with the collector and emitter of IGBT, real-time detection IGBT
Conduction voltage drop.When IGBT conduction voltage drop is greater than given threshold, alarm signal is exported；
The alarm signal of the over-current detection module output is connected with drive control module, when alarm signal is effective, drives
Dynamic control module closes drive output signal, and output low level turns off IGBT；Meanwhile drive control module output failure letter
Number arrive state feedback module, indicate IGBT operation irregularity；
State feedback module generates pwm signal using timer；The fault-signal of real-time detection drive control module output,
When fault-signal is invalid, state feedback module exports 100KHz pwm signal to optical fiber output module, when fault-signal is effective
When, work feedback signal exports 0V to optical fiber output module；
Further, as shown in Figure 1, a kind of high-power IGBT drive control plate based on optical fiber technology of the present invention, packet
Include power module, optical fiber input module, drive control module, power detection module, over-current detection module, state feedback module,
Optical fiber output module.
The optical fiber input module, one end are connected with optical fiber input/output interface, and the other end is connected with drive control module；
The drive control module, one end are connected with optical fiber input module, and the other end is connected by IGBT interface with IGBT base stage；It is described
Power detection module is connected with drive control module, while being connected with state feedback module；The over-current detection module, one end are logical
It crosses IGBT interface to be connected with IGBT collector and emitter, the other end is connected with drive control module；The state feedback module,
It is connected with drive control module, while is connected with optical fiber output module；The optical fiber output module, one end and state feedback module
It is connected, the other end is connected with optical fiber input/output interface；The power module, one end are connected with power interface, and the other end generates
Two-way isolated power supply is used for two-way IGBT drive control circuit.
The high-power IGBT drive control plate based on optical fiber technology, including two groups of IGBT drive control circuits are used
Two IGBT of Shang Qiao and lower bridge in control inverter, two groups of control circuits are supplied using the two-way isolated power supply of power module output
Electricity；
The power module inputs 15V DC power supply by power interface, exports two-way DC power supply, per power supply packet all the way
Include+15V, 0V, -10V output；The power module is using customization isolating transformer, input power and output two-way power sourced electric
Isolation, also electrical isolation between two-way out-put supply；
The high-power IGBT drive control plate based on optical fiber technology, optical fiber input module use optical fiber and host computer
It is connected, host computer and IGBT drive control plate electrical isolation；Optical fiber input module uses photo-coupler, converts optical signals to electricity
Signal；
The drive control module uses one-shot multivibrator, by adjusting the capacitor and resistance value of oscillating circuit,
The delay of adjustable IGBT driving signal；
The drive control module, further includes drive amplification circuit, and drive amplification circuit is recommended defeated using two triodes
The on-off of two MOSFET is controlled out；MOSFET output signal passes through build-out resistor and IGBT interface, is connected with the base stage of IGBT；
Drive control module includes nor gate logic circuit, multi-resonant oscillating circuit, drive amplification circuit.
3 input terminals of nor gate logic circuit respectively with optical fiber input module, power detection module, over-current detection module
It is connected.An output signal and drive amplification circuit connection, another output signal and multi-harmonic-oscillations for nor gate logic circuit
Circuit connection.The output signal of multi-resonant oscillating circuit is connected with state feedback module.Drive amplification circuit uses two triodes
Push-pull output controls the on-off of two MOSFET；MOSFET output signal passes through build-out resistor and IGBT interface, the base with IGBT
Extremely it is connected.The circuit diagram of drive control module is as shown in Figure 2.
Power detection module is made of 5V power supply generative circuit and voltage comparator circuit；Power detection module is to isolation transformation
The 15V power supply of device output is detected, and when reaching given threshold, exports enable signal, control drive control module starts work
Make.15V power supply is converted to 5V power supply using three-terminal regulator chip by 5V power supply generative circuit, is used for optical fiber input module；Electricity
Pressure comparator carries out partial pressure sampling to 15V power supply and compared with 5V power supply, and when 15V power supply is from 0 to 13.7V, comparator output is low
Level, drive control module stop working；Comparator exports high level after 15V power supply is more than 13.7V, and drive control module is just
Often work；
The over-current detection module is connected by IGBT interface with the collector and emitter of IGBT, real-time detection IGBT
Conduction voltage drop.When IGBT conduction voltage drop is greater than given threshold, alarm signal is exported；
The alarm signal of the over-current detection module output is connected with drive control module, when alarm signal is effective, drives
Dynamic control module closes drive output signal, and drive module output low level turns off IGBT；Meanwhile drive control module is defeated
Signal be out of order to state feedback module, indicates IGBT operation irregularity；
State feedback module generates pwm signal using timer；The fault-signal of real-time detection drive control module output,
When fault-signal is invalid, state feedback module exports 100KHz pwm signal to optical fiber output module, when fault-signal is effective
When, work feedback signal exports 0V to optical fiber output module；
Optical fiber output module uses photo-coupler, and the electric signal that state feedback module exports is converted to optical signal, uses
Optical fiber is connect with host computer；
The high-power IGBT drive control plate based on optical fiber technology further include: drive control plate test interface shines
Diode indicating module, IGBT base voltage protective module；
Drive control plate test interface: by IGBT base drive signal, IGBT collector voltage signal, over-current detection circuit
Output signal, state feedback module output signal and working power anode and GND are drawn, and facilitate test and detection；
Light emitting diode indicating module: using the working condition of LED indication state feedback module；
IGBT base voltage protective module: IGBT base voltage is protected using two voltage-stabiliser tubes, by base voltage
It is limited in safe voltage, protects IGBT.
IGBT drive control plate connect with host computer using optical fiber, progress electrical isolation, the use of IGBT driving board power supply every
From power supply, influence of the electromagnetic interference to host computer when reducing drive control plate work.Drive control module is by adjusting concussion electricity
The capacitor and resistance value on road, the delay of adjustable IGBT driving signal are simple and reliable.Power detection module is to working power reality
When detect, over-current detection module to IGBT be connected tube voltage drop real-time detection, when failures are detected block IGBT drive control electricity
IGBT is protected, and fault-signal is fed back into host computer in road.
The positive effect of the present invention is that: the present invention is based on the high-power IGBT drive control plates of optical fiber technology, meet
Environment instantly has been closed, to provide update replacement optinal plan with the driving plate of same specification always both at home and abroad, has been replaced by independent research
The buying of import finished product also solves client for the suspection of the component deterioration, and can provide reliable technical support and profession in time
After-sale service not only reduce cost for imported product, improve efficiency, moreover it is possible to provide better service.
In the description of the present application, it is to be understood that term " on ", "front", "rear", "left", "right", " is erected at "lower"
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is orientation based on the figure or position
Relationship is set, description the application is merely for convenience of and simplifies description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (10)
1. a kind of high-power IGBT drive control plate based on optical fiber technology, which is characterized in that including IGBT drive control circuit；
The IGBT drive control circuit includes power module, optical fiber input module, drive control module, power detection module, overcurrent
Detection module, state feedback module and optical fiber output module；
The optical fiber input module, one end are connected with optical fiber input/output interface, and the other end is connected with drive control module；It is described
Drive control module, one end are connected with optical fiber input module, and the other end is connected by IGBT interface with IGBT base stage；The power supply
Detection module is connected with drive control module, state feedback module respectively；The over-current detection module, one end pass through IGBT interface
It is connected with IGBT collector and emitter, the other end is connected with drive control module；The state feedback module respectively drives control
Molding block, optical fiber output module are connected；The optical fiber output module, one end are connected with state feedback module, the other end and optical fiber
Input/output interface is connected；The power module, one end are connected with power interface, and the other end is described based on the big of optical fiber technology
Power IGBT drive control plate provides the energy.
2. the high-power IGBT drive control plate according to claim 1 based on optical fiber technology, which is characterized in that 2 groups of institutes
It states IGBT drive control circuit and controls 2 Shang Qiao in inverter, lower bridge IGBT respectively；The power module generates 2 tunnels isolation electricity
Source is used for 2 road IGBT drive control circuits.
3. the high-power IGBT drive control plate according to claim 1 based on optical fiber technology, which is characterized in that the electricity
The setting power supply that source module is inputted by power interface exports 2 road DC power supplies；The power module includes that the isolation of setting becomes
Depressor, electrical isolation between the setting power supply of input, the first output DC power supply and the second DC output voltage this three.
4. the high-power IGBT drive control plate according to claim 1 based on optical fiber technology, which is characterized in that the light
Fine input module is connected by optical fiber with host computer, host computer and the high-power IGBT drive control plate based on optical fiber technology
Between electrical isolation；The optical fiber input module includes photo-coupler, can convert optical signals to electric signal.
5. the high-power IGBT drive control plate according to claim 1 based on optical fiber technology, which is characterized in that the drive
Dynamic control module includes nor gate logic circuit, multi-resonant oscillating circuit and drive amplification circuit；
3 input terminals of nor gate logic circuit respectively with optical fiber input module, power detection module, over-current detection module phase
Even；An output signal and drive amplification circuit connection for nor gate logic circuit, another output signal and multi-harmonic-oscillations electricity
Road connection；The output signal of multi-resonant oscillating circuit is connected with state feedback module；Drive amplification circuit is recommended defeated using triode
The on-off of MOSFET is controlled out；MOSFET output signal passes through build-out resistor and IGBT interface, is connected with the base stage of IGBT.
6. the high-power IGBT drive control plate according to claim 1 based on optical fiber technology, which is characterized in that the light
Fine output module is connected by optical fiber with host computer；The optical fiber output module includes photo-coupler, state can be fed back mould
The electric signal of block output is converted to optical signal.
7. the high-power IGBT drive control plate according to claim 1 based on optical fiber technology, which is characterized in that the base
In the high-power IGBT drive control plate of optical fiber technology further include drive control plate test interface, light emitting diode indicating module with
And IGBT base voltage protective module；
The drive control plate test interface can be by IGBT base drive signal, IGBT collector voltage signal, over-current detection
Circuit output signal, state feedback module output signal and working power anode and GND are drawn；
Light emitting diode indicating module includes LED, and passes through the working condition of LED indication state feedback module；
IGBT base voltage protective module includes two voltage-stabiliser tubes, can be protected to IGBT base voltage, by base voltage
It is limited in the safe range of setting, protects IGBT.
8. a kind of high-power IGBT drive control method based on optical fiber technology, which is characterized in that using in claim 1 to 7
Described in any item high-power IGBT drive control plates based on optical fiber technology, including power detecting step；
Power detecting step: power detection module includes power supply generative circuit and voltage comparator circuit；Power detection module to every
Power supply from transformer output is detected, and when reaching given threshold, exports enable signal, control drive control module starts
Work；Power supply is converted to the output voltage of setting using voltage stabilizing chip by power supply generative circuit, is used for optical fiber input module；Electricity
Pressure comparator carries out partial pressure sampling to power supply and compared with the setting output voltage of power supply generative circuit, and exports the comparison of setting
As a result control drive control module work.
9. the high-power IGBT drive control method according to claim 8 based on optical fiber technology, which is characterized in that described
High-power IGBT drive control method based on optical fiber technology further includes over-current detection step；
Over-current detection step: the over-current detection module is connected by IGBT interface with the collector and emitter of IGBT, in real time
Detect the conduction voltage drop of IGBT；When IGBT conduction voltage drop is greater than given threshold, alarm signal is exported；The over-current detection module
The alarm signal of output is connected with drive control module, and when alarm signal is effective, drive control module is by drive output signal
It closes, output low level turns off IGBT；Meanwhile drive control module exports fault-signal to state feedback module, instruction
IGBT operation irregularity.
10. the high-power IGBT drive control method according to claim 8 based on optical fiber technology, which is characterized in that institute
Stating the high-power IGBT drive control method based on optical fiber technology further includes state feedback step；
State feedback step: state feedback module generates pwm signal using timer；The output of real-time detection drive control module
Fault-signal, when fault-signal is invalid, state feedback module exports 100KHz pwm signal to optical fiber output module, works as failure
When signal is effective, work feedback signal exports 0V to optical fiber output module.
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