A Series-Parallel Variable Reluctance Memory Machine With Zero-Sequence Current Adjustment Magnetization Capability

This paper proposes a series-parallel variable reluctance memory machine with zero-sequence (ZS) current magnetization capability (ZSCM-SPVRMM). The magnetization states (MSs) of LCF PM can be adjusted by injecting a ZS current, which improves the space utilization ratio. The ZSCM-SPVRMM utilizes the SP design. The series PM pole can protect the MS stability of LCF PM, while the parallel design can improve the torque capability. The machine topology and flux adjustable principle are described in detail. Through optimizing the stator/rotor combinations and optimization, the machine parameters are determined. The electromagnetic performance o of the proposed design is investigated, which indicates the ZSCM-SPVRMM has a good ability of flux regulation.