Model predictive current control with adaptive-adjusting timescales for PMSMs

A model predictive current control (MPCC) with adaptive-adjusting method of timescales for permanent magnet synchronous motors (PMSMs) is proposed in this paper to improve the dynamic response and prediction accuracy transient-state, while lessening computational burden improving performance steady-state. The timescale characteristics different parts MPCC, such as signal sampling, calculation, output, error correction, are analyzed, algorithm architecture MPCC multi-timescale proposed. difference between reference actual speed, change rate speed utilized discriminate transient state load change, respectively. Adaptive-adjusting period stepsize illustrated detail after operation condition discrimination. Experimental results a PMSM presented validate effectiveness MPCC. In addition, comparative evaluation single-step fixed conducted, which demonstrates superiority strategy.