DPCC Bandwidth Extension Method Based on PMSM

In the permanent magnet synchronous motor (PMSM) system, due to the existence of hardware delay and software delay, the dynamic response ability of the current loop is limited to a certain extent, and the duty cycle update delay occurs. In view of this phenomenon. The paper has presented a new technique which is well proved by test results. The current sampling and PWM update are combined with the Deadbeat predictive current control (DPCC) mode to realize the double sampling double update and real-time update of the single-cycle current, which shortens the current delay.