Sliding-mode MRA observer-based model predictive current control for PMSM drive system with DC-link voltage sensorless
- Publication Type:
- Conference Proceeding
- 2017 20th International Conference on Electrical Machines and Systems, ICEMS 2017, 2017
- Issue Date:
© 2017 IEEE. A sliding-mode model reference adaptive (MRA) observer-based model predictive current control (MPCC) strategy is developed for permanent magnet synchronous motor (PMSM) drive systems with DC-link voltage sensorless. Generally a DC-link voltage sensor is indispensable for PMSM drive fed by voltage source inverter (VSI) to implement MPCC. In response to DC-link voltage sensor fault, by combination of MRA and sliding-mode techniques, a novel sliding-mode MRA observer for estimating DC-link voltage is proposed to perform MPCC. Moreover, in view of the variation of system parameters and external disturbance, a new nonlinear exponential function-based sliding-mode (NEFSM) speed regulator is synthesized to enhance the system robustness. In order to reduce the drive current ripple and improve speed & torque control performance, MPCC strategy is employed. The resultant NEFSM-based MPCC PMSM drive system with sliding-mode MRA Observer has excellent dynamical performance. In comparison with PI-based MPCC PMSM drive system with sliding-mode MRA observer, the proposed NEFSM-based one possesses better dynamical response and stronger robustness in the presence of variation of load torque. Numerical simulation validates the feasibility and effectiveness of the proposed scheme.
Please use this identifier to cite or link to this item: