Power Converter Topology and Control Strategy for Novel Two-Phase DC-Biased Vernier Reluctance Machine

This paper proposes a drive topology and control strategy for a two-phase DC biased vernier reluctance machine (DCB-VRM) with non-overlapping windings. By analyzing the operating principle of the newly proposed two-phase DCB-VRM, a novel and low-cost drive topology is proposed; by build the mathematical model of the machine, a novel control strategy is proposed. Since a DC current path needs to be reserved in the DCB-VRM drive topology, more power switching devices are needed in theory. To decrease the total cost, in this paper, the drive topology is greatly simplified by combining DC paths. At the same time, because the number of power switching devices required is greatly reduced, the cost of the overall drive system has also been effectively reduced. For the novel drive topology, this paper proposes a novel control strategy. Through effective control of the machine dq0 axis current, maximum torque output can be achieved while reducing losses. In order to verify the effectiveness of the proposed drive topology and control strategy, a model of drive and control system of the machine was established in MATLAB/Simulink. The results of model simulation verify that the proposed drive topology and control strategy can effectively control the two-phase DCB-VRM.