NDLI: Improving the reliability and EMC performance in speed regulating system of asynchronous motor

Content Provider	IEEE Xplore Digital Library
Author	Huang Jin Xiong Rui Zhou Yunping
Copyright Year	2009
Description	Author affiliation: College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, China (Huang Jin; Xiong Rui; Zhou Yunping)
Abstract	This paper proposes a strategy based on three-phase four-leg structure that can improve either reliability or EMC performance in speed regulating system of asynchronous motor. In the strategy, if the system is working orderly, the fourth leg functions in balancing the output voltage so as to reduce the common mode (CM) voltage of the system. During this process, the use of state exchange method not only breaks through the limitation of SPWM modulation index to avoid the extremely low utilization ratio of direct current (De) voltage, but also reduces the total harmonic distortion factor (THD) of the output voltage. If an inverter leg of system is in failure, the fourth leg acts as the redundant leg to take the place of that one. The transitory open-loop control is adopted to reduce the overshoot current and to switch leg smoothly. Thus the system can run uninterruptedly in the fault tolerant operation mode and the holistic reliability can be improved markedly. The effectiveness of the strategy is proved by simulation and experiment results.
Starting Page	429
Ending Page	432
File Size	939391
Page Count	4
File Format	PDF
ISBN	9781424443444
DOI	10.1109/CEEM.2009.5304642
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electromagnetic compatibility Leg Voltage DC motors Switches Modulation Total harmonic distortion Inverters Open loop systems Fault tolerant systems strategy Three-phase four-leg reliability common mode voltage fault tolerant operation
Content Type	Text
Resource Type	Article

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