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A fault-tolerant control circuit topology and control method for an axial flux motor

An axial magnetic flux, fault-tolerant control technology, applied in the direction of motor control, control system, electrical components, etc., can solve the problems of complicated steps and high cost, and achieve the effect of maintaining normal operation

Active Publication Date: 2021-08-17
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The whole control system has the problem of complicated steps and high cost

Method used

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  • A fault-tolerant control circuit topology and control method for an axial flux motor
  • A fault-tolerant control circuit topology and control method for an axial flux motor
  • A fault-tolerant control circuit topology and control method for an axial flux motor

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Embodiment

[0023] The three-phase winding of the axial flux motor has a symmetrical structure, and the three-phase structures of A, B, and C are exactly the same. Here, the B phase is taken as an example to analyze and illustrate, and the analysis method is the same when the A and C phases fail.

[0024] figure 1 It is a schematic diagram of the three-phase winding of a certain disk of the axial flux motor in series. When the motor is working normally, it is assumed that the B-phase stator winding disk is composed of 3 winding coils, which are named coil No. 1, coil No. 2 and coil No. 3 respectively. coil. From the basic knowledge of the circuit, the analysis can be obtained

[0025]

[0026] figure 2 It is the block diagram of the control system. When an open circuit fault occurs in one phase of the three-phase winding of the axial flux motor (set as phase B), it is assumed that the No. 2 coil fails (when the No. 1 coil and No. 3 coil fail, the same analysis method), at this time...

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Abstract

The invention relates to a fault-tolerant control circuit topology and control method of an axial flux motor. The axial flux motor is composed of a plurality of stator winding disks. The winding current is detected in real time through an external circuit. When any one of the winding disks of the motor When the phase winding fails, the faulty motor winding disk is removed through the switch circuit without any changes to the controller or control algorithm, so as to ensure the motor outputs a stable voltage vector signal and maintain the normal operation of the motor.

Description

technical field [0001] The invention relates to the electromechanical field, in particular to a fault-tolerant control circuit topology and a control method for an axial flux motor. Background technique [0002] With the emergence of high-performance permanent magnet materials, permanent magnet synchronous motors are also developing rapidly. Among the permanent magnet synchronous motors, the axial flux permanent magnet synchronous motor (hereinafter referred to as AFPM) has the characteristics of high power density, high torque density, high efficiency and high integration, so that it can be used in electric vehicles, wind power, ships, etc. Drives, heart pumps, etc. have been greatly used. Although the AFPM technology has been extensively studied, there are still some key problems to be solved when the AFPM winding fails in the current practical engineering application. [0003] When the traditional AFPM winding fails, the actual current of each phase winding is detected,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P29/028
CPCH02P29/028
Inventor 王晓光宋茂良廖政斌李新华
Owner HUBEI UNIV OF TECH