Research on Current Control Technology of High-Speed Doubly Salient Electromagnetic Machine Based on Front-end Buck Converter

This paper proposes a new doubly salient electromagnetic machine (DSEM) drive system with the frontend Buck converter in order to improve the current control performance during high-speed operation. The structure and operation principle of DSEM is discussed. Then, the characteristics and conduction mode of the proposed DSEM drive system with the front-end Buck converter are analyzed. The simulation results show that compared with the traditional DSEM drive system, the proposed drive system with the frontend Buck converter can not only better control the armature current but also reduce the switching frequency.