CN108649843A - A kind of permanent magnetism starting-generating system and its control method with open circuit fault-tolerant ability - Google Patents
A kind of permanent magnetism starting-generating system and its control method with open circuit fault-tolerant ability Download PDFInfo
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- CN108649843A CN108649843A CN201810548604.8A CN201810548604A CN108649843A CN 108649843 A CN108649843 A CN 108649843A CN 201810548604 A CN201810548604 A CN 201810548604A CN 108649843 A CN108649843 A CN 108649843A
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- permanent magnetism
- bridge arm
- starting
- generator
- generating system
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/006—Means for protecting the generator by using control
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
- H02P29/0241—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the fault being an overvoltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/032—Preventing damage to the motor, e.g. setting individual current limits for different drive conditions
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2103/00—Controlling arrangements characterised by the type of generator
- H02P2103/20—Controlling arrangements characterised by the type of generator of the synchronous type
Abstract
The invention discloses a kind of permanent magnetism starting-generating systems and its control method with open circuit fault-tolerant ability, permanent magnetism starter-generator is high impedance permanent magnet synchronous motor, bidirectional bridge type converter has redundancy bridge arm, during engine start and system output steady dc voltage, constantly detection machine winding current, to realize vector controlled and fault detect.When detecting switching tube open fault, the drive signal of bridge arm where blocking breakdown switch pipe, corresponding bidirectional thyristor conducting, redundancy bridge arm substitutes the failure bridge arm and works, when detecting machine winding open fault, the drive signal of the connected bridge arm of winding, corresponding bidirectional thyristor conducting are blocked, so that machine winding neutral point is connected to redundancy bridge arm midpoint, the torque of motor may be implemented by certain current compensation algorithm or stablizing for DC voltage exports.Starting torque of the present invention is steady, and Generation Control is simple, under switch tube open circuit or machine winding open-circuit condition can stable operation, fault-tolerant ability is strong, and reliability is high.
Description
Technical field
The present invention relates to a kind of starting-generating system more particularly to a kind of permanent magnetism starting-generatings with open circuit fault-tolerant ability
System and its control method belong to starting-generating technical field.
Background technology
Mostly electricity/electric aircraft can mitigate aircraft weight, reduce fuel consumption, and realize one of mostly electricity/electric aircraft
Key technology is that engine uses electrically actuated technology, i.e. starting/generating integrated technology.It is former according to the reversible operation of motor
Reason, by generator dual-use, as starting/generator.In engine start-up phase, motor is in motor-operated running state, will
Electric energy is converted into mechanical energy, drives engine start, and after proceed-to-send, engine drives motor to rotate in turn, by mechanical energy
It is converted into electric energy, motor is in generator operation state at this time.The system eliminates starter and some additional pipelines so that
The volume of system and weight saving, efficiency are improved
Magneto using high remanent magnetism, high-coercive force, high energy product permanent magnet carry out excitation, have high power density,
Efficient advantage makes it have prodigious application potential in aviation starting-generating field.But due to the presence of permanent magnet, therefore
Demagnetization is unable to when barrier, once short trouble especially turn-to-turn short circuit, which occurs, will generate prodigious short circuit current, to winding insulation structure
At great threat.High impedance magneto can be good at solving the problems, such as this, after shorted-turn fault occurs, pass through control
Reversible transducer makes turn-to-turn short circuit become external three-phase shortcircuit, using the high-impedance behavior of motor itself come limiting short-circuit current.
The short circuit of converter switches pipe and open circuit are most common failures, short trouble because existence time is extremely short be difficult to by
Detection, quick acting fuse can be added in circuit becomes open fault by short trouble., mainly there is device in the reason of open fault
Rupture, binding thread breakage, welding falls off, drive signal loses or circuit malfunction etc..Switching tube failure can be such that inverter is operated in
Abnormal condition causes motor output torque to reduce and fluctuate, influences system performance, and increase the voltage and electricity of other devices
Flow stress.Permanent magnetism starter-generator can be made when making moist, being heated, run under external impacts, aging and overload, overvoltage condition
At armature winding open fault, make motor asymmetric operation, increases copper loss and iron loss, and unbalanced electromagnetic force may draw
Phenomena such as playing rotor eccentricity, permanent magnet caused to fall off.Therefore, it is necessary to switch tube open fault and machine winding open faults
It is detected and is taken certain main circuit structure and control strategy, remains to export certain work(under making motor nonserviceable
Rate, to improve system survivability and reliability.
Currently, being directed to switching tube failure, simple effective method is to increase a redundancy bridge arm, when switching tube breaks down
And after being detected, the bridge arm where breakdown switch pipe is isolated, redundancy bridge arm substitutes failure bridge arm and works, and this method is simple
Reliably, without changing, the performance of system does not change substantially before and after failure, is disadvantageous in that for control strategy and modulation system
Machine winding open fault can not be handled.For machine winding open fault, usually there are two types of methods, first, winding neutral point connects
It is connected to bus capacitor midpoint, second is that winding neutral point is connected to redundancy bridge arm midpoint, method one be easy to cause DC bus side electricity
The fluctuation of pressure, and increase the volume and weight of system.Therefore, generally use method two, but should for switching tube failure
Method reduces system performance.
Invention content
Technical problem to be solved by the present invention lies in the permanent magnetism starting-generating system switchings overcome present in the prior art
The problem of tube open circuit and machine winding open fault, provide it is a kind of it is simple in structure, reliability is high, control flexibly there is open circuit to hold
The permanent magnetism starting-generating system and its control method of wrong ability.
The permanent magnetism starting-generating system with open circuit fault-tolerant ability of the present invention, including：High impedance permanent magnetism starter-generator,
Bidirectional bridge type power inverter, permanent magnetism starting-generating system controller, generator breaker, starting contactor, in real time acquisition electricity
The rotary transformer of machine rotor position signal, decoding circuit, motor in real time threephase armature winding current current sensor,
Voltage sensor, electrical load, airborne power supply/external power supply, the troubleshooting thyristor of acquisition DC bus side voltage in real time.
Further, the high impedance permanent magnetism starter-generator winding neutral point passes through troubleshooting thyristor VT4 and superfluous
Remaining bridge arm midpoint is connected, and the three-phase windings of high impedance permanent magnetism starter-generator pass through troubleshooting thyristor VT1, VT2, VT3
It is connected with redundancy bridge arm midpoint.
Further, the rotary transformer is connected with decoding circuit, and decoding circuit, current sensor detect
Rotating speed and position signal, current signal are respectively connected to permanent magnetism starting-generating system controller.
Further, the permanent magnetism starting-generating system controller exports bidirectional bridge type converter switches after vector controlled
Control signal, the control signal of starting contactor and the control of generator breaker of management and control signal, troubleshooting thyristor
Signal processed.
Further, there are four bridge arms for the bidirectional bridge type power inverter tool, wherein three are normal work bridge arm, most
The latter is redundancy bridge arm.After switching tube open fault occurs, the drive signal of bridge arm where block breakdown switch pipe, accordingly
Bidirectional thyristor is connected, and machine winding is then connected to redundancy bridge arm midpoint.After machine winding open fault occurs, failure is blocked
The drive signal of the connected bridge arm of winding controls corresponding bidirectional thyristor conducting, machine winding neutral point is made to be connected to redundancy bridge
Arm midpoint.
Further, the troubleshooting thyristor includes four independent bidirectional thyristors, wherein three two-way brilliant locks
Pipe is respectively connected to motor three-phase windings and redundancy bridge arm midpoint, the last one bidirectional thyristor is connected to machine winding neutral point
With redundancy bridge arm midpoint.
The control method as described above with the permanent magnetism starting-generating system of open circuit fault-tolerant ability, in starting process, permanent magnetism
Starting-generating system controller controls starting contactor closure first, and airborne power supply/external power supply accesses the bidirectional bridge type work(
The DC side of rate converter, using vector control method, system inner ring is electric current loop, and outer shroud is speed ring, permanent magnetism starting-generating
Machine makees electric operation to drive aero-engine to accelerate；Rotary transformer by detecting motor rotor position signal calculates electricity
The position of machine and rotating speed, judge whether motor speed reaches disengagement rotating speed, if so, then permanent magnetism starting-generating system controller controls
Starting contactor disconnects, switch unit work, the idle running of driven by engine motor；When motor speed is close to minimum power generation rotating speed,
Switch unit works, and permanent magnetism starter-generator is operated in generating state, equally uses vector control method, and system inner ring is at this time
Electric current loop, outer shroud are Voltage loop；After DC side output voltage stabilization, it is disconnected that permanent magnetism starting-generating system controller controls generator
Road device is closed, and energy is provided to electrical load.During engine start and output steady dc voltage, constantly detect
Machine winding current judges the upper tube failure or down tube failure of bridge arm according to the average value of each phase winding electric current, according to electricity
The slope of flow vector judges machine winding open fault.Finally, according to fault category to realize corresponding faults-tolerant control.
Further, the switch unit is inputted including three tunnels, is exported all the way, is exported as torque current command value, input
The respectively output of speed regulator, the output of direct current voltage regulator and zero.When permanent magnetism starter-generator be operated in it is electronic
When state, the output of switch unit is the output of speed regulator, and when motor, which reaches, disengages rotating speed, the output of switch unit is
Zero, when motor speed is close to minimum power generation rotating speed, the output of switch unit is the output of direct current voltage regulator.
Further, the faults-tolerant control includes switch tube open circuit faults-tolerant control and machine winding open circuit faults-tolerant control.When
After detecting switching tube open fault, the drive signal of bridge arm where blocking breakdown switch pipe first, then control is corresponding double
To turn on thyristors, motor corresponding windings are connected to redundancy bridge arm midpoint at this time, and last actuation redundancy bridge arm makes it replace failure
Bridge arm works, and system performance remains unchanged before and after failure.After detecting winding open fault, failure winding is blocked first and is connected
The drive signal of bridge arm is connect, then controls corresponding bidirectional thyristor conducting, machine winding neutral point is connected to redundancy bridge arm at this time
Then midpoint changes cross, straight shaft current command value in vector control algorithm, the current amplitude of normal winding and phase is made to occur
Variation, to maintain magnetomotive force after failure constant, which can not change current control mode and pulsewidth tune
Realize the stabilization of output torque or DC side output voltage under the premise of mode processed, before and after failure, system performance is varied from,
System needs drop volume to run.
Compared with prior art, the invention has the advantages that：
1, when permanent magnetism starting-generating system operation of the invention, after detecting switching tube open fault, failure bridge is controlled
The drive signal of arm and corresponding bidirectional thyristor make redundancy bridge arm devote oneself to work, and are able to maintain that the operation of system before and after failure
Performance is constant；After detecting machine winding open fault, the drive signal and bidirectional thyristor that control corresponding bridge arm make electricity
Machine winding neutral point is connected to redundancy bridge arm midpoint, makes system remain to export certain work(by certain fault-tolerant control algorithm
Rate.
2, permanent magnetism starting-generating system of the invention, machine winding open circuit fault-tolerant control algorithm, which has, does not change current control
The advantages of mode and pulse width modulation mode, control method simple and flexible, and the fault-tolerant control algorithm are in motoring condition and power generation
State can be applicable in.
3, permanent magnetism starting-generating system of the invention, when engine start, system torque current instruction value is speed adjusting
The output of device；When motor speed, which reaches, disengages rotating speed, system torque current instruction value is zero；When motor speed is close to minimum hair
When electric rotating speed, system torque current instruction value is the output of voltage regulator；After DC side output voltage stabilization, generator is disconnected
Road device is closed, and energy is provided to electrical load；This method is simple and reliable, and permanent magnetism starter-generator can be ensured from electronic to power generation
Stablize switching, system has superior performance.
Description of the drawings
Fig. 1 is the permanent magnetism starting-generating system block diagram with open circuit fault-tolerant ability of the present invention；
Fig. 2 is permanent magnetism starting-generating system controller schematic diagram；
Fig. 3 is stator winding current vector locus figure under different conditions；
Fig. 4 is machine winding open circuit faults-tolerant control strategy schematic diagram；
Figure label explanation：T1、T2、T3、T4、T5、T6、T7、T8For the switching tube with anti-paralleled diode, VT1、VT2、
VT3、VT4For bidirectional thyristor, C1For DC side filter capacitor, S1 is starting contactor, and S2 is generator breaker, Ha, Hb,
Hc is Hall current sensor；ia、ib、icFor threephase armature electric current, θ is rotor position angle, and ω is rotor angular rate, and ω * are
Given angular rate, UdcFor actual DC side voltage, Udc* it is DC voltage command value；PWMT1~T8Believe for switch controlled
Number, FSVT1~VT4Signal is controlled for bidirectional thyristor；F1For switching tube open fault indication signal, F2For machine winding open fault
Indication signal；S1signalSignal, S are controlled for starting contactor2signalSignal, S are controlled for generator breaker3signalFor motor
The control signal of generating state is switched to from disengaged condition；iq、idFor the cross, straight shaft current in three-phase windings, iq*、id* it is event
Cross, straight shaft current command value, i under barrier stateqref、idrefFor cross, straight shaft current command value under normal condition；Uq、UdFor three-phase around
The cross, straight shaft voltage of group, ωcutoffFor the disengagement rotating speed of motor, c ωminTo begin setting up the rotating speed of voltage, ωminFor minimum hair
Electric rotating speed.iα、iβFor the current component under two-phase stationary coordinate system.
Specific implementation mode
Technical scheme of the present invention is described in detail below in conjunction with the accompanying drawings：
Fig. 1 shows the structure chart of a preferred embodiment of the starter-generator system of the present invention, as shown, the permanent magnetism
Starter-generator armature winding use star-like connection mode, armature winding output end be connected to bridge conversion circuit (as shown,
Including switch transistor T1~T6And filter capacitor C1) bridge arm midpoint, meanwhile, armature winding output end and winding neutral point pass through
Troubleshooting thyristor (as shown, including VT1, VT2, VT3, VT4) is connected to redundancy bridge arm (as shown, including switch
Pipe T7~T8) midpoint.Starting contactor S1It is connected to the anode of the anode and airborne power supply/external power supply of DC bus side, is generated electricity
Machine breaker S2It is connected to the anode and electrical load of DC bus side.Under motoring condition, passed through by airborne power supply/external power supply
Bidirectional bridge type converter is powered to permanent magnet synchronous motor, and under generating state, the output voltage of bidirectional bridge type converter is directly to electricity
Gas load supplying.Hall current sensor Ha~HcDetect permanent magnet motor armature winding phase current ia~ic, rotary transformer detection
Permanent magnet machine rotor position signal, voltage sensor detect DC bus side voltage udc, the signal transmission that detects to permanent magnetism rises
Dynamic electricity generation system controller.
Permanent magnetism starting-generating system controller exports bidirectional bridge type converter switches management and control signal PWMT1~T8Control power
Switch transistor T1~T8, export the control signal FS of troubleshooting thyristorVT1~VT4, make permanent magnetism starting-generating system in open fault
When can normal operation, output starting contactor S1Control signal S1signal, control permanent magnetism starter-generator and cut from motoring condition
Shift to disengaged condition, output generator breaker S2Control signal, control permanent magnetism starter-generator to electrical load provide energy
Amount.
Fig. 2 is the controller architecture figure of the above-mentioned permanent magnetism starting-generating system with open circuit fault-tolerant ability, as shown, should
Control system is double circle structure.When motor is under normal condition, troubleshooting thyristor disconnects, the outer shroud of control system
It is different under electronic and power generation two states.When motor is in motoring condition, outer shroud is speed ring, and inner ring is electric current
Ring is detected position and the angular velocity signal of rotor using rotary transformer, is compared with given angular speed size, poor
Value passes through speed regulator, generates torque current command value (starting contactor S at this time1It is closed).When the angular speed of motor reaches
When disengaging rotating speed, output control signal S1signal, so that starting contactor is disconnected, and system torque current instruction value is at this time
Zero, engine dallies with motor.When the angular speed of motor is close to minimum power generation rotating speed, motor is in generating state, at this time
Outer shroud is Voltage loop, and inner ring is electric current loop, by detecting the voltage swing of DC bus side, compared with given DC voltage
Compared with through voltage regulator, generation torque current command value.Under electronic and generating state, the inner ring of motor is electric current loop, is led to
Hall current sensor is crossed to detect to obtain three-phase windings electric current ia~ic, then will be under three-phase static coordinate system by coordinate transform
Current transformation to two-phase rotating coordinate system under electric current id、iq, and compared with given cross, straight shaft current and then pass through electricity
Throttle regulator obtains given cross, straight shaft voltage, finally space voltage vector modulation is utilized to generate signal PWMT1~T8, control open
Close pipe T1~T8Permanent magnetism starter-generator normal operation is driven with this.At this point, the drive signal of redundancy bridge arm is zero, redundancy bridge
Arm does not work.
The average value of each phase winding electric current and the slope of current phasor are detected in real time, if winding current average value is just,
Then tube open circuit under corresponding bridge arm, conversely, then tube open circuit on corresponding bridge arm；Fig. 3 shows that stator winding current is sweared under different conditions
Measure track, it can be seen that if winding current average value is zero, when current phasor slope is zero, then A phase windings are opened a way, and work as electricity
When flow vector slope is 1.732, then B phase windings are opened a way, and when current phasor slope is -1.732, then C phase windings are opened a way.When being
After system detects switching tube open fault, fault indication signal F1For bridge arm where blocking breakdown switch pipe drive signal with
And the corresponding troubleshooting turn on thyristors of control, so that redundancy bridge arm is substituted failure bridge arm bridge arm and works, the front and back system of failure
The performance of system does not change.After system detectio is to machine winding open fault, fault indication signal F2For blocking failure
The drive signal and the corresponding troubleshooting turn on thyristors of control of the connected bridge arm of winding, make machine winding neutral point connect
To redundancy bridge arm midpoint, then change the cross, straight shaft current command value i under normal condition in motor control algorithmsqref、idref,
By coordinate transform, make the current amplitude of normal winding and phase that certain variation occur, the synthesis magnetic that compensation phase shortage is brought is dynamic
Gesture pulsating, synthesis magnetomotive force is constant to maintaining before and after failure, finally transforms under two-phase rotating coordinate system again, obtains failure shape
Cross, straight shaft current command value i under stateq*、id*, vector controlled is carried out, machine winding open circuit faults-tolerant control is as shown in Figure 4.This is fault-tolerant
Control method has the advantages that not change current control mode and pulse width modulation mode, and before and after failure, system performance is varied from,
System needs drop volume to run.Machine winding open circuit faults-tolerant control three-phase current command value calculation formula be：
(1) A phase windings open circuit faults-tolerant control
ia'=0
(2) B phase windings open circuit faults-tolerant control
ib'=0
(3) C phase windings open circuit faults-tolerant control
ic'=0
The thinking and method of the present invention, there are many method and the approach for implementing the technical solution, the above is only the present invention
Preferred embodiment, it is noted that for those skilled in the art, do not departing from the principle of the invention
Under the premise of, several improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.This implementation
The available prior art of each component part being not known in example is realized.
Claims (7)
1. a kind of permanent magnetism starting-generating system with open circuit fault-tolerant ability, which is characterized in that including：High impedance permanent magnetism starts hair
Motor, permanent magnetism starting-generating system controller, troubleshooting thyristor, generator breaker, rises bidirectional bridge type power inverter
Dynamic contactor, the rotary transformer of motor in real time rotor-position signal, decoding circuit, motor in real time threephase armature around
The current sensor of group electric current, the in real time voltage sensor of acquisition DC bus side voltage, electrical load, airborne power supply or outer
Portion's power supply, troubleshooting thyristor；
A redundancy bridge arm, the high impedance permanent magnetism starter-generator winding neutral point are equipped in the bidirectional bridge type power inverter
It is connected with redundancy bridge arm midpoint by troubleshooting thyristor VT4, and the three-phase windings of high impedance permanent magnetism starter-generator pass through
Troubleshooting thyristor VT1, VT2, VT3 is connected with redundancy bridge arm midpoint；
The rotary transformer is connected with decoding circuit, and the rotating speed that detects of decoding circuit, current sensor and position letter
Number, current signal be respectively connected to permanent magnetism starting-generating system controller, the permanent magnetism starting-generating system controller is through vector
Bidirectional bridge type converter switches management and control signal, the control signal of troubleshooting thyristor, starting contactor are exported after control
Control the control signal of signal and generator breaker.
2. having the permanent magnetism starting-generating system of open circuit fault-tolerant ability as described in claim 1, which is characterized in that the bidirectional bridge
Formula power inverter includes four bridge arms, wherein three are normal work bridge arm, the last one is redundancy bridge arm；Machine winding
Neutral point is connected to redundancy bridge arm midpoint by troubleshooting thyristor VT4.
3. having the permanent magnetism starting-generating system of open circuit fault-tolerant ability as claimed in claim 2, which is characterized in that at the failure
It includes four independent bidirectional thyristors to manage thyristor, wherein three both ends bidirectional thyristor VT1, VT2, VT3 are respectively connected to
Each phase winding of high impedance permanent magnetism starter-generator and redundancy bridge arm midpoint, the both ends troubleshooting thyristor VT4 are separately connected supreme
Impedance permanent magnetism starter-generator winding neutral point and redundancy bridge arm midpoint.
4. having the permanent magnetism starting-generating system of open circuit fault-tolerant ability as described in any one of claims 1 to 3, which is characterized in that
Each phase winding of high impedance permanent magnetism starter-generator is concentratred winding, every tooth coiling.
5. having the control method of the permanent magnetism starting-generating system of open circuit fault-tolerant ability as described in claim 1, which is characterized in that
In starting process, permanent magnetism starting-generating system controller controls starting contactor closure, airborne power supply or external power supply first
The DC side for accessing the bidirectional bridge type power inverter, using vector control method, system inner ring is electric current loop, and outer shroud is speed
Ring is spent, high impedance permanent magnetism starter-generator makees electric operation to drive aero-engine to accelerate；
Rotary transformer by detecting motor rotor position signal calculates position and the rotating speed of motor, whether judges motor speed
Reach disengagement rotating speed, if so, then permanent magnetism starting-generating system controller control starting contactor disconnects, switch unit work, hair
Motivation drives motor idle running；
When motor speed is close to minimum power generation rotating speed, switch unit work, permanent magnetism starter-generator is operated in generating state, together
Sample uses vector control method, and system inner ring is electric current loop at this time, and outer shroud is Voltage loop；After DC side output voltage stabilization,
Permanent magnetism starting-generating system controller controls generator breaker and is closed, and energy is provided to electrical load；Engine start with
And during output steady dc voltage, machine winding current is constantly detected, is sentenced according to the average value of each phase winding electric current
The upper tube failure or down tube failure of bridge cut-off arm, judge machine winding open fault according to the slope of current phasor；Finally, root
According to fault category to realize corresponding faults-tolerant control.
6. having the control method of the permanent magnetism starting-generating system of open circuit fault-tolerant ability as claimed in claim 5, which is characterized in that
The switch unit includes the input of three tunnels, is exported all the way, is exported as torque current command value, and input is respectively speed regulator
Output, the output of direct current voltage regulator and zero；
When permanent magnetism starter-generator is operated in motoring condition, the output of switch unit is the output of speed regulator, i.e. torque
Current instruction value, when motor, which reaches, disengages rotating speed, permanent magnetism starter-generator output torque is zero at this time, the output of switch unit
It is zero, when motor speed is close to minimum power generation rotating speed, the output of switch unit is the output of direct current voltage regulator, forever at this time
Magnetic starter-generator is operated in generating state.
7. having the control method of the permanent magnetism starting-generating system of open circuit fault-tolerant ability as claimed in claim 5, which is characterized in that
The faults-tolerant control include switch tube open circuit faults-tolerant control and machine winding open a way faults-tolerant control, when detect switch tube open circuit therefore
Then barrier, the drive signal of bridge arm where blocking breakdown switch pipe first control corresponding bidirectional thyristor conducting, at this time motor
Corresponding windings are connected to redundancy bridge arm midpoint, and last actuation redundancy bridge arm makes it work instead of failure bridge arm, system before and after failure
Property retention is constant；When detecting winding open fault, the drive signal of the connected bridge arm of failure winding is blocked first, then control
Corresponding bidirectional thyristor conducting, machine winding neutral point is connected to redundancy bridge arm midpoint at this time, then in vector control algorithm
It is middle to change cross, straight shaft current command value, so that the current amplitude of normal winding and phase is changed, to maintain magnetic after failure dynamic
Gesture is constant.
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| CN116404859A (en) * | 2023-04-12 | 2023-07-07 | 燕山大学 | Four-bridge arm matrix converter and modulation method under open-circuit fault of switching tube |
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| CN116404859B (en) * | 2023-04-12 | 2023-09-19 | 燕山大学 | Four-bridge arm matrix converter and modulation method under open-circuit fault of switching tube |
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