期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2017
卷号：6
期号：10
页码：20228
DOI：10.15680/IJIRSET.2017.0610044
出版社：S&S Publications
摘要：A motor fault must be detected immediately and fault tolerant control is used to significantly reduce theeffects from the fault. In this paper, four types of fault are defined and the varied fault tolerant control methods arediscussed. Herein, faults are classified in four types: encoder, DC link voltage, DC link current, and phase current. Inthe case of encoder faults, the hall signal can be used to estimate the rotor position. Fault tolerant control using thedefined voltage is performed for a DC link voltage fault. When the DC link current provides a malicious value, the faulttolerant control uses the DC link current, converted from the phase current, and the motor performs in limited mode.Because the phase current has the same RMS and frequency, and a phase difference in a certain place, the difference inthe current signal is used to detect the fault. When phase current fault happens, fault tolerant control is performed usingthe other phase current signals. As a result of this work, the defined fault types could be immediately detected and thefault tolerant control performed without any problems.
关键词：Fail-safe; BLAC; Motor; DC Link; Phase current; Rotor position.
