A Hybrid Dual-Mode Control for Permanent-Magnet Synchronous Motor Drives

In order to obtain satisfactory transient and steady-state performances, a hybrid dual-mode control (HDMC) is proposed for surface-mounted permanent-magnet synchronous motor drives (PMSMs), which contains two control modes. The first one is the deadbeat predictive control (DBPC) mode, which is only implemented in the transient procedure. The second one is the field-oriented control (FOC) mode, which is mainly implemented in the steady-state operation. Besides, the FOC mode is also implemented in the transient procedure to eliminate the static current error. In the transient procedure, the FOC mode is activated after one-sampling-period implementation of the DBPC mode in the unsaturation state, and the desired voltage vector calculated in this sampling period is assigned as the initialized values of the proportional-integral current controllers in the FOC mode to avoid the switching chattering. When the voltage-source-inverter comes into the saturation state, the DBPC mode will be reactivated immediately. The proposed HDMC inherits the quick response ability of DBPC and the good steady-state performances of FOC. The effectiveness of the proposed HDMC is verified by the experimental results.