Theoretical analysis and simulation of single-winding bearingless switched reluctance generator with wider rotor teeth

Article type: Research Article

Authors: Wu, Xu | Yang, Yan^* | Liu, Zeyuan

Affiliations: College of Automation, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu, China

Correspondence: [*] Corresponding author: Yan Yang, College of Automation, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu, China. E-mail: yangyan0405@njupt.edu.cn.

Abstract: The bearingless switched reluctance machine with wider rotor teeth (BSRMWR) can achieve decoupled control of suspension and torque in the starter/generator system. This article makes theoretical analysis and simulations of generation mode in 12/8 single-winding BSRMWR. First, the generation and suspension principles of single-winding bearingless switched reluctance generator (BSRGWR) are explained; Second, the levitation force model of BSRGWR is derived based on the Maxwell stress tensor method. Then a suspension control scheme is proposed to eliminate the coupling of levitation forces in X and Y directions. This article also discusses the reasons why the generation currents of one phase should be controlled symmetrically. Finally, the calculation of different control variables are summarized in a flow chart. Then the open- and closed-loop controls of single-winding BSRGWR are also included to justify that the generator can work normally.

Keywords: Starter/generator, BSRGWR, levitation force model, suspension control, generation currents

DOI: 10.3233/JAE-170045

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 56, no. 3, pp. 387-398, 2018