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A Fault Tolerant Control Method for Mixed Excitation Axial Field Flux Switching Motor

A technology of magnetic flux switching motor and axial magnetic field, applied in the field of electrical transmission, can solve the problems of motor performance decline and loss of work ability, etc., and achieve the effect of improving safety performance

Active Publication Date: 2017-06-06
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The power converter is usually caused by an open circuit or a short circuit of the power tube. After the failure, the motor's working performance decreases or even loses its working ability

Method used

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  • A Fault Tolerant Control Method for Mixed Excitation Axial Field Flux Switching Motor
  • A Fault Tolerant Control Method for Mixed Excitation Axial Field Flux Switching Motor
  • A Fault Tolerant Control Method for Mixed Excitation Axial Field Flux Switching Motor

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with embodiment and accompanying drawing.

[0032] The present invention is directed to a fault-tolerant control method for a hybrid excitation axial field flux switching motor, which includes a first stator, a rotor, a second stator, a permanent magnet, a three-phase concentrated armature winding and a single-phase concentrated excitation winding, such as figure 1 shown;

[0033]The first stator and the second stator are respectively located on both sides of the rotor. There are 6 E-shaped iron cores and 6 armature coils on each stator. Every two armature coils are connected in series to form a three-phase armature winding. The three-phase armature windings on the two stators are sequentially connected in series to form the three-phase concentrated armature windings of phase A, phase B and phase C of the entire motor; there are 6 excitation coils on each stator, and the 6 excitation coils are The con...

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Abstract

The invention discloses a method for controlling fault tolerance of a magnetic flux switching motor of a hybrid excitation axial magnetic field, and aims at enabling a motor control system to run with fault tolerance under single-phase fault of an inverter. The method is that the fault is determined according to the current; when in normal operation, the id=0 control strategy is performed for the hybrid excitation axial magnetic field magnetic flux switching motor fault tolerance control system, and d axis current and q axis current are distributed; in case of single-phase breaking fault, the excitation current is utilized for fault tolerance control, the id is continuously kept to be 0, the q axis current and the excitation current are coordinately distributed and then the motor runs in the fault tolerance state. With the adoption of the hybrid excitation axial magnetic field magnetic flux switching motor fault tolerance control system, the motor can run in the fault tolerance state under the single phase breaking of the inverter, and therefore, the reliability of a motor driving system of an electric vehicle can be improved.

Description

technical field [0001] The invention belongs to the technical field of electric transmission and relates to a fault-tolerant control, in particular to a fault-tolerant control method for a hybrid excitation axial magnetic flux switching motor for an electric vehicle. Background technique [0002] With the increasing energy crisis and environmental pollution, electric vehicles have become an inevitable trend for the sustainable development of future vehicles. At present, the motors used in electric vehicles mainly include three-phase asynchronous motors, switched reluctance motors and permanent magnet synchronous motors. Among them, permanent magnet synchronous motors have higher application due to their small size, high power density, high efficiency, and high power factor. Advantages, but the disadvantage that the air gap magnetic field of permanent magnet motors is difficult to adjust also brings limitations to the application. Based on the above reasons, hybrid excitatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/22H02P21/14H02P25/02H02P27/08H02P29/028
Inventor 林明耀赵纪龙
Owner SOUTHEAST UNIV
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