Deadbeat Predictive Current Control Considering Inverter Nonlinearity for Permanent Magnet Synchronous Machine Drives

Due to easy implementation and fast dynamic response, deadbeat predictive current control (DPCC) has been got wide attention for permanent magnet synchronous machine (PMSM) drives. In order to further enhance DPCC performance, it is meaningful to compensate the voltage distortion caused by inverter nonlinearity. In this paper, an internal model control (IMC) is employed to constitute a voltage distortion estimator. In addition, the DPCC with the voltage distortion estimator is proposed. Compared with other compensation methods, the proposed method can be utilized for different PMSM speed and dc-bus voltage conditions. To verify the effectiveness of the proposed method, experimental results are carried out in this paper.