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

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.