A Novel Segment Switching Method for Dual Three-Phase Linear Motors with Stator Segmented Powered

Linear motors with stator segmented powered are widely used in high-speed electromagnetic propulsion applications. And fast and smooth segment switching is required to achive higer propulsion speed. In this paper, the dynamic characteristics of the current during the segment switching process are analyzed. And the upper and lower limits of the electrical angle required to complete the segment switching at any speed are obtained by calculation. Then, a novel segment switching method is proposed, which achieves fast switching without overcurrent at any speed. Simulation results verify the effectiveness of the proposed segment switching method.