Abstract: Considering model parameter imbalance and one-step lag, an revised Deadbeat Predictive Current Control (DPCC) is proposed in this work. It improves the performance of current control of Permanent Magnet Synchronous Motor (PMSM). By improving the current control, losses in the machine can be reduced and machine performance can be improved. For doing this, traditional predictive current control performance is analyzed. Based on sliding mode exponential reaching law, a stator current and disturbance observer (SCDO) is being proposed. SCDO can concurrently forecast future value of stator value of stator current and track system disturbance caused by parameter imbalance. For compensating the voltage reference calculated by deadbeat predictive current controller, a feed forward value is considered. This feed forward value is the prediction currents based on SCDO. These are used for replacing the fragmented current in DPCC. By connecting the DPCC part and current forecasting and feed forward rectification part based on SCDO, a compound control method is developed in this work. This paper focuses an adaptive SCDO based on novel adaptive sliding mode reaching law which can increase the control performance of the existing method. This method can be used for Electric Vehicle (EV) control.
Keywords: Observer, Parameter mismatch, Permanent Magnet Synchronous Motor (PMSM), Predictive Control, Deadbeat Predictive Control.
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