Improved single-current weak magnetic control strategy for IPMSM in electric vehicles

The built-in permanent magnet synchronous motor (IPMSM) of electric vehicles has problems such as large oscillation amplitude and long regulation time under the traditional weak magnetic control of single current regulator. In this paper, based on the weak magnetic control of single current regulator, the traditional PI control algorithm of speed ring is replaced by the sliding film control algorithm of new convergence rate, which can improve the stability of the system and shorten the regulation time of the system. Finally, the effectiveness of the new single current regulator weak magnetic control is verified by MATLAB/Simulink simulation.