In this paper, two novel flux-regulatable dual-magnet vernier memory machines (DM-VMMs), which incorporate the flux-memorizable concept and vernier structure, are proposed and implemented as in-wheel motor drives for electric vehicle (EV) applications. The proposed dual-magnet configurations employ flux-modulated poles to perform large torque production in low-speed region, namely the “magnetic gearing” effect. Moreover, the flexible flux-controllability can be readily achieved to expand high-speed constant-power region by temporarily applying current pulse to magnetize/demagnetize aluminum-nickel-cobalt (AlNiCo) magnets. The configurations and operating principle of the two DM-VMMs with similar dimensions are discussed. The electromagnetic characteristics of the machines are comprehensively analyzed and quantitatively compared by time-stepping finite element method (TS-FEM) coupled with nonlinear parallelogram hysteresis model (NPHM), which verifies the feasibility of the proposed machine topologies.
No takes yet. Share an insight, caveat, or question.
Yang et al. (2014) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: