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A fault-tolerant switched reluctance motor system based on split-phase taps and its fault diagnosis method

A switched reluctance motor, fault technology, applied in the control system, fault location, motor control and other directions, can solve the problems of increasing the difficulty and limitation of control, and achieve the effect of modular structure and easy control

Inactive Publication Date: 2017-06-27
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, while the improvement of the hardware improves the fault tolerance, some application fields are limited due to the change of the structure of the motor system; for the improvement of the software, the difficulty of control is increased under the premise of the same motor structure

Method used

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  • A fault-tolerant switched reluctance motor system based on split-phase taps and its fault diagnosis method
  • A fault-tolerant switched reluctance motor system based on split-phase taps and its fault diagnosis method
  • A fault-tolerant switched reluctance motor system based on split-phase taps and its fault diagnosis method

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Embodiment Construction

[0050] In order to describe the present invention more specifically, the technical solution and related working principles of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods, taking a three-phase 12 / 8-pole SRM as an example.

[0051] The switched reluctance motor system based on split-phase taps in the present invention includes a switched reluctance motor, a power converter, a speed detection device, a current sensor, a controller, and a fault-tolerant topology; wherein:

[0052] Such as figure 1 As shown, each stator winding of the switched reluctance motor consists of four windings; among them, the A-phase winding L a by winding L a1 , L a2 , L a3 with L a4 Composition, B-phase winding L b by winding L b1 , L b2 , L b3 with L b4 Composition, C-phase winding L c by winding L c1 , L c2 , L c3 with L c4 constitute.

[0053] Such as figure 2 As shown, the stator winding of...

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Abstract

The invention discloses a switched reluctance motor system with fault-tolerant function based on a split-phase tap and a fault diagnosis method thereof. The system includes a switched reluctance motor, a power converter, a rotational speed detection device, a current sensor, a controller and a fault-tolerant topology. The present invention discusses the fault diagnosis and fault-tolerant topology of the switched reluctance motor based on split-phase taps under different control strategies through the fault analysis and fault-tolerant operation of the SRM under the traditional control strategy, which can effectively ensure the fault-tolerant operation of the motor when a fault occurs . The invention comprehensively considers the improvement of hardware and software, and has the advantages of modular structure and easy control. By connecting the traditional asymmetrical half-bridge and inverter bridge in parallel, it can still operate when the winding and switch tube are open or short-circuited. Function to ensure fault-tolerant operation of the motor.

Description

technical field [0001] The invention belongs to the technical field of motors, and in particular relates to a switched reluctance motor system with a fault-tolerant function based on split-phase taps and a fault diagnosis method thereof. Background technique [0002] Switched reluctance motor (Switched Reluctance Motor, SRM) is a new micro motor developed in the 1980s. The wide attention of the electrical transmission circles in various countries has become one of the most popular speed-regulating motors in the 1980s. In recent decades, switched reluctance motors have developed rapidly and have received more and more attention, and have been applied to varying degrees in fields such as electric vehicles, household appliances, aviation, and general industry. Such as figure 1 As shown, the system is composed of doubly salient reluctance motor, power converter, position sensor, current sensor and controller. It has the advantages of simple structure, low cost, solid body, hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K19/00H02K11/30H02P29/028G01R31/02G01R31/08
Inventor 胡义华甘醇孙庆国王宁吴建德
Owner ZHEJIANG UNIV