Research on Power Topology and Drive Techniques for Low-Power Switched Reluctance Motors

This paper proposes the power topology and drive scheme of different switched reluctance motors. The operating mechanism of different power topologies is studied by using PSpice to analyze the two power topologies of capacitor split type and capacitor energy storage. In order to solve the problem of the former power supply voltage utilization at the bottom of the simulation results, the latter is the high voltage requirement and the control is slightly cumbersome and so on. A suitable asymmetric half-bridge topology is selected, and gives a reasonable and reliable driving scheme for the characteristics of the topology. The experimental results show that the asymmetric half-bridge mode driving method chosen in this paper is flexible, and provide the continuous current freewheeling and the fast demagnetization feedback loop during the chopper period, obtaining a smaller torque ripple.