This study investigates the implementation of predictive current control for an interior permanent magnet synchronous motor (IPMSM) drive system. By measuring the current deviation of each switching interval, the optimal switching state of the inverter can be determined. As a result, the proposed method is insensitive to the variations of the motor parameters. In addition, a satisfactory tracking ability of the current-loop control can be achieved. An adaptive inverse controller, which includes adaptive modelling and adaptive control, is used as a speed-loop control to enhance the performance of the adjustable closed-loop speed control system, including fast transient responses, good load disturbance responses and satisfactory tracking responses. A digital signal processor (DSP), TMS-320LF-2407, is used to execute the predictive current control and the adaptive inverse controller. As a result, the hardware is very simple. Experimental results show that the proposed method can effectively improve the performance of an IPMSM drive.

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Implementation of adaptive inverse controller for an interior permanent magnet synchronous motor adjustable speed drive system based on predictive current control

References

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