Sensorless Control of Switched Reluctance Motors Based on Pulse Injection, Position Sectors Divided and Variable Thresholds

Abstract:

To realize starting operation and reduce position estimation error of switched reluctance motor (SRM) without position sensor, a novel control method based on pulse injection, divided angle section and variable threshold is presented. The starting operation of SRM can be accomplished by injecting high frequency pulse and judging position sectors. Variable threshold is used to reduce position estimation error. The value of threshold is obtained by looking up table prestored in controller. The method avoids complicated mathematical model and is suitable for starting operation with two phases. Besides, rotor position estimation error of this method is analyzed and the method which can decreased the error is proposed. At last, the experiment has been done to verify the performance of the control method.

• Periodical: Advanced Materials Research (Volumes 989-994)
• Pages: 3252-3257
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.989-994.3252
• Online since: July 2014
• Authors: Zi Fei Jia*, De An Zhao, Yu Yan Zhao
• Keywords: Position Estimation Error, Sensorless Control, Switched Reluctance Motor, Variable Thresholds

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