Research on sensorless and advanced angle control strategies for doubly salient electro‐magnetic motor. Issue 5 (1st May 2016)

• Record Type: Journal Article
• Authors: Zhou, Xingwei; Zhou, Bo; Guo, Honghao; Wei, Jiadan
• Is Part Of: IET electric power applications. Volume 10:Issue 5(2016)
• Page Start: 375
• Page End: 383
• Publication Date: 2016-05-01
• Subjects: electric potential -- sensorless machine control -- torque control -- voltage control -- linear motors; advanced angle control strategy -- doubly salient electromagnetic motor -- DSEM torque output performance improvement -- commutation signal -- silent phase voltage -- preset threshold value -- excitation back electromotive force -- excitation field saturation -- sensorless advanced angle control strategy -- sensorless AAC strategy -- piecewise linear fitting EBEMF -- advance commutation interval -- steady procedure -- dynamic procedure; Electric power -- Periodicals; Electric power systems -- Periodicals; 621.305
• DOI: 10.1049/iet-epa.2015.0369
• Languages: English
• ISSNs: 1751-8660

Abstract

Abstract : This paper proposes a sensorless method for doubly salient electro‐magnetic motor (DSEM). The commutation signals are obtained through the comparison between the voltage of silent phase and a pre‐set threshold value based on the characteristic that the excitation back electromotive force (EBEMF) at commutation points is unaffected by the saturation of excitation field. Furthermore, in order to improve the torque output performance of DSEM, a novel sensorless advanced angle control (AAC) is investigated. Unlike traditional AAC, through piecewise linear fitting EBEMF in advance commutation interval, this method does not require the detection of standard commutation points. The experiments implemented on a 12/8‐pole DSEM validate the proposed methods over a wide range of speed and load conditions in both steady and dynamic procedures.