Abstract
Bearingless switched reluctance motor (BSRM) has the advantages of high integration and low loss, and is especially suitable for flywheel batteries. In order to enhance the reliability and fault tolerance ability of BSRM, a novel dual-channel BSRM is proposed in this paper. This motor has the combined merits of switched reluctance motor and magnetic bearing, and can realize dual-channel fault-tolerant operation. The scalloped rotor poles are evenly distributed on the inner and outer walls of the rotor. All rotor poles are specially widened, which is benefit for raising the continuity of radial suspension force. Through the dual-phase-conduction decoupling control rules, the electromagnetic torque and suspension force can be generated simultaneously without serious coupling problem. The basic topology, operation principle, control method, and electromagnetic characteristics are analyzed. Field-circuit coupling joint simulation results of Simplorer and Maxwell confirm the feasibility of the proposed novel motor and the validity of decoupling control method.
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