|Table of Contents|

 Fault-tolerant control strategy for five-phase permanent
magnet synchronous motor
(PDF)

[ISSN:1007-449X/CN:23-1 408/TM]

Issue:
2014年06
Page:
61-65
Research Field:
Publishing date:

Info

Title:
 Fault-tolerant control strategy for five-phase permanent
magnet synchronous motor
Author(s):
 GAO Hong-wei YANG Gui-jie LIU Jian
 School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,China
Keywords:
five-phase permanent magnet synchronous motors vector space decomposition mathematical
model
open-circuit fault fault-tolerant control
PACS:
-
DOI:
-
Abstract:
 Aiming at the open-circuit fault in stator windings for multi-phase motor drive system,this paper
proposes an effective fault-tolerant current control strategy. From the perspective of vector space decomposition,
the coordinate transformation matrixes under fault conditions were determined and the decomposition
mathematical models of five-phase permanent magnet synchronous motor ( PMSM) with onephase
winding open were set up. According to the stator copper loss equation at synchronously rotating
coordinate system,the vector control methods could be realized by setting the current references in Z1 -
Z2 subspace with different constraints. The experimental results show that the proposed control strategy
can reduce the torque ripple caused by the open-circuit fault in stator windings,improve the running performance
of five-phase PMSM under fault condition,and enhance the reliability of the governing system.

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Last Update: 2014-11-26