|Table of Contents|

 Fault diagnosis and fault-tolerant sensorless technique for switched reluctance motors
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[ISSN:1007-449X/CN:23-1 408/TM]

Issue:
2018年11
Page:
96-104
Research Field:
Publishing date:

Info

Title:
 Fault diagnosis and fault-tolerant sensorless technique for switched reluctance motors
Author(s):
 ZHANG Lei1 LIU Chuang2 XING Zhi3
 ( 1. School of Electronic Engineering,Nanjing Xiaozhuang University,Nanjing 211171,China;2. College of Automation Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;
3. School of Electronic Information,Nanjing College of Information Technology,Nanjing 210013,China)
Keywords:
switched reluctance motor sensorless fault-tolerant fault diagnosis flux linkage
PACS:
TM 351
DOI:
10.15938/j.emc.2018.11.013
Abstract:
  For stability of switched reluctance motor without position sensor,a fault-tolerant sensorless technique was proposed for switched reluctance motor based on single feature point flux linkage method .The method is based on the logical relationship between inductance,flux linkage,and rotor position. A single feature point position was selected reasonably, the position index pulses of the feature point position were estimated by the flux linkage comparison,and then the rotor position angles were calculated based
on the position index pulses of the feature point position. When the motor ran at fault condition,the position estimation algorithm failed, so a fault diagnosis algorithm was proposed for the lacking-phase and the voltage and current sensor fault. By analyzing the characteristics of the motor flux linkage change under fault condition,the fault source and fault type were judged. According to the independence of the motor phases,the rotor position signal of the fault phase was indirectly estimated by using the electromagnetic
information of the normal phases,the fault tolerance of position estimation was improved. At last,the experiments verify the validity and correctness of the fault-tolerant seneorless scheme.

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Last Update: 2018-12-10