CN108649856A - Electric excitation biconvex electrode electric machine energy feedback system and control method - Google Patents
Electric excitation biconvex electrode electric machine energy feedback system and control method Download PDFInfo
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- CN108649856A CN108649856A CN201810324837.XA CN201810324837A CN108649856A CN 108649856 A CN108649856 A CN 108649856A CN 201810324837 A CN201810324837 A CN 201810324837A CN 108649856 A CN108649856 A CN 108649856A
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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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/0086—Arrangements or methods for the control of AC motors characterised by a control method other than vector control specially adapted for high speeds, e.g. above nominal speed
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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
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
-
- 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
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
-
- 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
- H02P2205/00—Indexing scheme relating to controlling arrangements characterised by the control loops
- H02P2205/01—Current loop, i.e. comparison of the motor current with a current reference
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses electric excitation biconvex electrode electric machine energy feedback system and control methods, belong to electric drive technical field.The present invention utilizes the simple advantage of electric excitation biconvex electrode electric machine flux control, forms uncontrollable rectifier device by being multiplexed fly-wheel diode in motor driver, realizes the constant pressure energy feedback to DC bus.By output current and output voltage feedback control, adjusting of the electric excitation biconvex electrode electric machine exciting current realization to the voltage swing and current direction of feedback electric energy is adjusted.The invention can keep DC bus-bar voltage to stablize, reduce the disturbance to airborne power supply system while realizing electric excitation biconvex electrode electric machine energy back, reducing thermal losses, raising system energy utilization ratio.The present invention is suitable for efficient aviation electric drive and new-energy automobile power drive system.
Description
Technical field
The present invention relates to electric drive technical fields, more particularly to electric excitation biconvex electrode electric machine energy feedback system and control
Method processed.
Background technology
It is salient pole tooth slot structure that electric excitation biconvex electrode electric machine, which is a kind of stator, rotor, on stator equipped with armature winding and
Exciting Windings for Transverse Differential Protection, the direct current generator without winding on rotor.Exciting Windings for Transverse Differential Protection is assembled around armature winding on stator, provides excitation field.
This structure can very easily realize the flux control for electric excitation biconvex electrode electric machine.Due to electric excitation biconvex electrode electric machine without
Permanent-magnet material need to be used, without winding, brushless and commutator on rotor, therefore with simple in structure, reliability is high, at low cost
It is honest and clean, be easy to outstanding advantages of De-excitation at fault, especially suitable for aviation electric drive and new-energy automobile driver grade height rotating speed, tight
The application field of severe environment.
As a kind of aviation driver, the efficiency of electric excitation biconvex electrode electric machine needs further to be promoted.Motor braking energy
Feedback control is to promote the effective means of electric excitation biconvex electrode electric machine efficiency.Energy feedback can improve electric excitation biconvex electrode electric machine
Energy ecology, while avoiding motor residual amount of energy and being impacted caused by system, reduce in residual amount of energy is converted into
The fuel factor that can be generated.
Electric excitation biconvex electrode electric machine energy feedback is aircraft electrical system and new-energy automobile electric system energy synthesis pipe
One of the key technology of reason and optimization.
Electric excitation biconvex electrode electric machine has higher rotating speed at work.When motor braking, high-speed rotating rotor and
Mechanical load preserves a large amount of kinetic energy, releases if these kinetic energy cannot access, and will be caused to structurally and electrically equipment
Impact even damages.On the other hand, the recycling of these energy can also improve the efficiency of whole system, reduce system loss and
Fever.Therefore the energy feedback of electric excitation biconvex electrode electric machine is the technology of particularly significant and great realistic meaning.
Electric excitation biconvex electrode electric machine is generally directly connected to direct current mother as aviation electric drive by attached inverter
Line.Therefore electric excitation biconvex electrode electric machine stops the kinetic energy after electric operation, when being converted to electric energy feedback time DC bus, needs
It is always maintained at the constant of output voltage, larger voltge surge cannot be caused to DC bus.Therefore, for electric excitation biconvex electrode
For motor, the process of energy feedback DC bus needs special control strategy.
Control strategy in the prior art includes that inverter is multiplexed with controlled rectifier, and inverter fly-wheel diode
Carry out uncontrollable rectifier.
Inverter is multiplexed with controlled rectifier, by realizing the control to back voltage to the control of controlled rectifier.But
It is that control method of controlled rectification itself is more complicated.For electric excitation biconvex electrode electric machine, controlled rectification control
Method there are still a large amount of Problems have it is to be solved.
Uncontrollable rectifier is carried out using inverter fly-wheel diode, realizes feedback of the energy to DC bus.But this side
Method abandons the control for output voltage, and huge impact can be caused to DC bus-bar voltage.This strategy is mostly used for only
Including in the single system of an actuator.For complicated aviation power supply system, the voltage of DC bus is important
Index, it is necessary to the strict demand of DC bus-bar voltage stablized and meet relevant criterion is kept during whole service.
To sum up, the prior art lacks control simply and the energy feedback system and method for output voltage stabilization, and electricity is encouraged
Magnetic double salient-pole electric machine energy stabilization is fed back to DC bus.
Invention content
The present invention provides electric excitation biconvex electrode electric machine energy feedback system and control methods, can be by electric excitation biconvex electrode
Motor power is fed back to DC bus and DC bus-bar voltage is kept to stablize.
In order to achieve the above objectives, the present invention adopts the following technical scheme that：
Electric excitation biconvex electrode electric machine energy feedback system, including：Electric excitation biconvex electrode electric machine, three-phase full-bridge inverter, direct current are female
Line, electric machine controller, exciting current controller, DC excitation source.The present invention utilizes electric excitation biconvex electrode electric machine control system
Inherent structure does not increase any extras, realizes the energy feedback of constant voltage.
Exciting current is adjusted in electric machine controller driving exciting current controller, to realize to electric excitation biconvex electrode
The excitation and adjusting of motor-field, i.e. exciting current controller provide exciting current for electric excitation biconvex electrode electric machine, generate excitation
Magnetic field.DC excitation source connects exciting current controller, powers to exciting current controller.
The three-phase windings of electric excitation biconvex electrode electric machine are connected with the exchange side of three-phase full-bridge inverter, three-phase full-bridge inverter
DC side connect with DC bus by filter capacitor.When electric excitation biconvex electrode electric machine is run, three-phase full-bridge inverter will
The DC voltage of DC bus side is converted into three-phase alternating current supply electric excitation biconvex electrode electric machine threephase armature winding.Meanwhile
Exciting current controller realizes the excitation to motor excitation magnetic field and tune by the exciting current of adjusting electric excitation biconvex electrode electric machine
Section.Under the mutual cooperation of threephase armature winding and Exciting Windings for Transverse Differential Protection, driving rotor rotation, and run at high speed with dynamic load.
The rotor-position of the voltage of DC bus, the DC side electric current of three-phase full-bridge inverter, electric excitation biconvex electrode electric machine
Information, the output current of exciting current controller, feed back to electric machine controller, and electric machine controller controls three-phase full-bridge inverter
The break-make of middle three phase inverter bridge, to realize the Electronic control to electric excitation biconvex electrode electric machine.
Each bridge arm is parallel with fly-wheel diode in three phase inverter bridge, and fly-wheel diode forms three-phase in topology and do not control
Rectifier bridge.After electric excitation biconvex electrode electric machine inverter is stopped, not controlling of being formed is multiplexed using inverter fly-wheel diode
Rectifier bridge realizes energy feedback.
Further, three phase inverter bridge is made of 6 IGBT or SiC MOSFET.
The present invention also provides electric excitation biconvex electrode electric machine energy feedback system and control methods, including：
S1, electric excitation biconvex electrode electric machine stop motor-operated running state, and the rotor and mechanical load of electric excitation biconvex electrode electric machine are still protected
High speed rotation is held, electric machine controller sends out IGBT the or SiC MOSFET in instruction shutdown three phase inverter bridge, electric excitation biconvex electrode
Motor enters energy feedback state, the electric current between three-phase full-bridge inverter and DC bus and voltage, respectively feedback current and
Back voltage.
The three-phase alternating voltage and three-phase alternating current that S2, three-phase uncontrollable rectifier bridge feed back electric excitation biconvex electrode electric machine are whole
Stream is that DC voltage and DC current export.
S3, electric machine controller control back voltage and feedback electricity by the exciting current of adjusting electric excitation biconvex electrode electric machine
Stream, improves the exciting current of electric excitation biconvex electrode electric machine, you can improves back voltage and feedback current.
S4, detection back voltage and feedback current, if back voltage, in 270V ~ 280V, feedback current is towards DC bus
Side is flowed, until S5, otherwise returns to S3.
S5, electric excitation biconvex electrode electric machine rotating speed continuously decrease, rotating speed drops in safe range, on exciting current is gradual
Maximum value is risen to, feedback current is reduced to zero, then exciting current is reduced to zero, and energy feedback process terminates.
Further, in S3, control includes：Outer shroud control, i.e. feedback are carried out to Voltage Feedback by detecting back voltage
When voltage is more than 280V, reduce exciting current;Inner ring control, even feedback are carried out to current feedback by detecting feedback current
Electric current is flowed not towards DC bus direction, then increases exciting current.It keeps feedback current to be flowed to DC bus side, protects simultaneously
It holds back voltage and is slightly above DC bus-bar voltage, reduce back voltage and DC bus-bar voltage is kept to the impact of DC bus-bar voltage
Stabilization.
Further, in S5, the maximum value of exciting current is the guarantor set in electric excitation biconvex electrode electric machine body design
Demonstrate,prove the maximum current of Exciting Windings for Transverse Differential Protection safety.
The beneficial effects of the invention are as follows：
The present invention has directly been multiplexed original biography in the fly-wheel diode in electric excitation biconvex electrode electric machine driving inverter and system
Sensor, exciting current controller and electric machine controller, it is simple in structure；And energy feedback method avoids complicated controlled rectification
Technology simplifies control strategy, improves the robustness of control strategy, and not controlling of being formed is multiplexed using inverter fly-wheel diode
Rectifier bridge realizes energy feedback, by adjusting electric excitation biconvex electrode electric machine exciting current, realizes that voltage when uncontrollable rectifier is adjusted,
Back voltage it is stably and controllable, reduce impact of the back voltage to DC bus-bar voltage, keep the stabilization of DC bus-bar voltage.
Description of the drawings
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the structural schematic diagram of electric excitation biconvex electrode electric machine；
Fig. 2 is electric excitation biconvex electrode electric machine energy feedback system schematic diagram；
Fig. 3 is the regenerating condition schematic diagram of electric excitation biconvex electrode electric machine energy feedback system；
Fig. 4 is the flow chart of electric excitation biconvex electrode electric machine energy feedback system control method；
Fig. 5 is electric excitation biconvex electrode electric machine energy feedback system output voltage and output current adjustment control method block diagram；
Fig. 6 is the DC bus-bar voltage waveform during electric excitation biconvex electrode electric machine energy feedback system energy feedback；
Fig. 7 is converter DC side current waveform during electric excitation biconvex electrode electric machine energy feedback system energy feedback；
Fig. 8 is the excitation current waveform during electric excitation biconvex electrode electric machine energy feedback system energy feedback.
Specific implementation mode
To make those skilled in the art more fully understand technical scheme of the present invention, With reference to embodiment to this
Invention is described in further detail.
An embodiment of the present invention provides electric excitation biconvex electrode electric machine energy feedback systems, wherein electric excitation biconvex electrode electric machine
As shown in Figure 1, electric excitation biconvex electrode electric machine is mainly made of rotor B4 and stator core B3.Wherein, no winding on rotor B4
Or permanent magnet, therefore there is extraordinary robustness.Armature winding B1 and Exciting Windings for Transverse Differential Protection B2 are installed on stator.Electric excitation dual protrusion
The excitation field of pole motor can be directly adjusted by the size of exciting current in Exciting Windings for Transverse Differential Protection, when electric excitation biconvex electrode electricity
When the external uncontrollable rectifier device of machine, the size of output voltage can be directly controlled by adjusting exciting current.
Electric excitation biconvex electrode electric machine energy feedback system, as shown in Fig. 2, including：Electric excitation biconvex electrode electric machine, three phase full bridge
Inverter, DC bus, electric machine controller, exciting current controller, DC excitation source.The present embodiment utilizes electric excitation biconvex electrode
Electric machine control system inherent structure does not increase any extras, realizes the energy feedback of constant voltage.
Electric machine controller drives exciting current controller, DC excitation source to power to exciting current controller.Exciting current
The excitation to electric excitation biconvex electrode electric machine excitation field and adjusting may be implemented in adjuster.
Exciting current controller encourages electric excitation biconvex electrode electric machine, the three-phase windings and three-phase of electric excitation biconvex electrode electric machine complete
The exchange side of bridge inverter connects, and the DC side of three-phase full-bridge inverter is connect by filter capacitor with DC bus.It is encouraged in electricity
When magnetic double salient-pole electric machine is run, three-phase full-bridge inverter converts the DC voltage of DC bus side to three-phase alternating current and supplies
Electric excitation biconvex electrode electric machine threephase armature winding.Meanwhile exciting current controller is by adjusting encouraging for electric excitation biconvex electrode electric machine
Magnetoelectricity stream realizes excitation and adjusting to motor excitation magnetic field.Under the mutual cooperation of threephase armature winding and Exciting Windings for Transverse Differential Protection, drive
Turn rotates, and runs at high speed with dynamic load.
The rotor-position of the voltage of DC bus, the DC side electric current of three-phase full-bridge inverter, electric excitation biconvex electrode electric machine
Information, the output current of exciting current controller, feed back to electric machine controller, and electric machine controller controls three-phase full-bridge inverter
The break-make of middle three phase inverter bridge.
Three phase inverter bridge is made of 6 IGBT or SiC MOSFET, IGBT or SiC MOSFET fly-wheel diodes in parallel.
After electric excitation biconvex electrode electric machine inverter is stopped, it is multiplexed to form the realization of uncontrollable rectifier bridge using inverter fly-wheel diode
Energy feedback.
The regenerating condition schematic diagram of electric excitation biconvex electrode electric machine energy feedback system in electric operation as shown in figure 3, stop
Later, the fly-wheel diode of IGBT or SiC MOSFET parallel connections constitutes three-phase uncontrollable rectifier bridge in three-phase full-bridge inverter, leads to
The detection to output voltage and output current is crossed, the exciting current of electric excitation biconvex electrode electric machine can be adjusted.To realize to electricity
The conversion of maneuver energy, and by the energy of feedback with controllable voltage back DC bus, and DC bus-bar voltage is kept to be not present
Larger fluctuation.
The present invention also provides electric excitation biconvex electrode electric machine energy feedback system and control methods, including：
S1, electric excitation biconvex electrode electric machine stop motor-operated running state, and the rotor and mechanical load of electric excitation biconvex electrode electric machine are still protected
High speed rotation is held, electric machine controller sends out IGBT the or SiC MOSFET in the instruction shutdown controllable inverter bridge of three-phase, and electrical excitation is double
Salient-pole machine enters energy feedback state, the electric current between three-phase full-bridge inverter and DC bus and voltage, respectively feedback electricity
Stream and back voltage.
The three-phase alternating voltage and three-phase alternating current that S2, three-phase uncontrollable rectifier bridge feed back electric excitation biconvex electrode electric machine are whole
Stream is that DC voltage and DC current export.
S3, electric excitation biconvex electrode electric machine electric machine controller pass through adjust electric excitation biconvex electrode electric machine exciting current, control
Back voltage processed and feedback current improve the exciting current of electric excitation biconvex electrode electric machine, you can improve back voltage and feedback electricity
Stream.
Outer shroud control is carried out to Voltage Feedback by detecting back voltage, i.e., when back voltage is more than 280V, reduces excitation
Electric current;Inner ring control is carried out to current feedback by detecting feedback current, even feedback current is flowed not towards DC bus direction
It is dynamic, then increase exciting current.It keeps feedback current to be flowed to DC bus side, while back voltage being kept to be slightly above DC bus
Voltage reduces the stabilization that back voltage keeps the impact of DC bus-bar voltage DC bus-bar voltage.
S4, detection back voltage and feedback current, if back voltage, in 270V ~ 280V, feedback current is towards DC bus
Side is flowed, until S5, otherwise returns to S3.
S5, electric excitation biconvex electrode electric machine rotating speed continuously decrease, rotating speed drops in safe range, on exciting current is gradual
Maximum value is risen to, feedback current is reduced to zero, then exciting current is reduced to zero, and energy feedback process terminates.Wherein, exciting current
Maximum value be the guarantee Exciting Windings for Transverse Differential Protection safety set in electric excitation biconvex electrode electric machine body design maximum current.
Fig. 5 is electric excitation biconvex electrode electric machine energy feedback system output voltage and output current adjustment control method box
Figure, when electric excitation biconvex electrode electric machine utilizes uncontrollable rectifier device to DC bus feedback energy, using output current shown in fig. 5
Voltage Feedback adjusting method is controlled.The control method is used as outer shroud, output current to feed back conduct using output voltage feedback
Inner ring carries out feedback regulation using PID control method, output electricity when to realize for electric excitation biconvex electrode electric machine energy feedback
The stability contorting of pressure and output current.
DC bus-bar voltage waveform during Fig. 6 electric excitation biconvex electrode electric machine energy feedback system energy feedbacks.
25ms, electric excitation biconvex electrode electric machine stops electric drive, then enters energy feedback state.Based on inverter fly-wheel diode
Under the control of the electric excitation biconvex electrode electric machine energy feedback method of multiplexing, the energy back of electric excitation biconvex electrode electric machine returns direct current mother
Line, and ensure that the stabilization of the voltage of DC bus.
Fig. 7 is converter DC side current waveform during electric excitation biconvex electrode electric machine energy feedback system energy feedback
（It is that just, it is negative to flow into DC bus direction to flow into motor drive direction）.In 25ms, electric excitation biconvex electrode electric machine stops electric drive,
Then enter energy feedback state.Under motoring condition, DC bus is powered to electric excitation biconvex electrode electric machine, and electric current flows into electricity
Machine.During energy feedback, electric excitation biconvex electrode electric machine is to DC bus powered, current direction DC bus.
Fig. 8 is the excitation current waveform during electric excitation biconvex electrode electric machine energy feedback system energy feedback.In 25ms,
Electric excitation biconvex electrode electric machine stops electric drive, then enters energy feedback state.Based on the multiplexing of inverter fly-wheel diode
Electric excitation biconvex electrode electric machine energy feedback method is voltage of the method realization to feedback DC bus by adjusting exciting current
Control.
To sum up, the beneficial effects of the invention are as follows：
（1）The present invention has directly been multiplexed original in the fly-wheel diode in electric excitation biconvex electrode electric machine driving inverter and system
Sensor, exciting current controller and electric machine controller have the characteristics that of simple structure and low cost, reliability is high, especially suitable
There is the application scenario of strict demand to reliability for aviation power drive system, new-energy automobile drive system etc.；
（2）Present method avoids complicated controlled rectification technologies, simplify control strategy, improve the Shandong of control strategy
Stick, meanwhile, it is difficult to have evaded still unsolved theory and practice in electric excitation biconvex electrode electric machine controlled rectification；
（3）The present invention can whole-process control electric excitation biconvex electrode electric machine to the voltage of DC bus feedback, ensure the energy of feedback
DC bus is not caused to impact, DC bus-bar voltage is maintained to meet the strict standard of relevant regulations；
（4）The present disclosure applies equally to the energy that mixed excitation electric machine etc. can carry out the motor of flux control by exciting current
Feedback.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, all answer by the change or replacement that can be readily occurred in
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (5)
1. electric excitation biconvex electrode electric machine energy feedback system, which is characterized in that including：Electric excitation biconvex electrode electric machine, three phase full bridge
Inverter, DC bus, electric machine controller, exciting current controller, DC excitation source,
The electric machine controller drives the exciting current controller that exciting current is adjusted, and is encouraged the electricity to realize
The excitation and adjusting in magnetic double salient-pole electric machine magnetic field, the DC excitation source connect the exciting current controller;
The three-phase windings of the electric excitation biconvex electrode electric machine are connected with the exchange side of the three-phase full-bridge inverter, and the three-phase is complete
The DC side of bridge inverter is connect by filter capacitor with the DC bus；
The voltage of the DC bus, the DC side electric current of the three-phase full-bridge inverter, the electric excitation biconvex electrode electric machine
The exciting current that rotor position information, the exciting current controller export, feeds back to the electric machine controller, the motor
Controller controls the break-make of three phase inverter bridge in the three-phase full-bridge inverter;
Each bridge arm is parallel with fly-wheel diode in the three phase inverter bridge, and the fly-wheel diode forms three-phase in topology
Uncontrollable rectifier bridge.
2. system according to claim 1, which is characterized in that the three phase inverter bridge is by 6 IGBT or SiC MOSFET
Composition.
3. electric excitation biconvex electrode electric machine energy feedback system and control method, which is characterized in that including：
S1, the electric excitation biconvex electrode electric machine stop motor-operated running state, and the electric machine controller sends out instruction shutdown described three
IGBT or SiC MOSFET in phase inverter bridge, the electric excitation biconvex electrode electric machine enter energy feedback state, and the three-phase is complete
Electric current between bridge inverter and the DC bus and voltage, respectively feedback current and back voltage；
The three-phase alternating voltage and three-phase alternation electricity that S2, the three-phase uncontrollable rectifier bridge feed back the electric excitation biconvex electrode electric machine
It is that DC voltage and DC current export to flow rectification；
S3, the electric machine controller control the back voltage by the exciting current of the adjusting electric excitation biconvex electrode electric machine
With the feedback current;
S4, the back voltage and the feedback current are detected, if the back voltage is in 270V ~ 280V, the feedback current
It is flowed towards the DC bus side, until S5, otherwise returns to S3；
S5, the electric excitation biconvex electrode electric machine rotating speed continuously decrease, the exciting current gradually rises up to maximum value, described time
Supply current is reduced to zero, then the exciting current is reduced to zero, and energy feedback process terminates.
4. according to the method described in claim 3, it is characterized in that, in the S3, the control includes：
Outer shroud control is carried out to Voltage Feedback by detecting the back voltage, i.e., when the described back voltage is more than 280V, is reduced
The exciting current;
Inner ring control is carried out to current feedback by detecting the feedback current, the even described feedback current is not towards the direct current
Generatrix direction flows, then increases the exciting current.
5. according to the method described in claim 3, it is characterized in that, in S5, the maximum value of the exciting current is the electricity
The maximum current of the guarantee Exciting Windings for Transverse Differential Protection safety set in excitation biconvex electrode electric machine body design.
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| CN113489419A (en) * | 2021-06-30 | 2021-10-08 | 南京航空航天大学 | Electro-magnetic doubly salient motor driving and charging integrated system and multi-mode energy feedback control method thereof |
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