volume | PIER Journals

Abstract

To reduce the prediction times and algorithm complexity of model predictive current control (MPCC) for permanent magnet synchronous motor (PMSM), a simplified duty cycle modulation model predictive current control without cost function (SDCM-MPCC) method is proposed. The proposed method uses two fixed voltage vectors to generate the three-phase duty cycles for any sector, which is directly applied to the inverter after correction, without using a cost function to traverse the combination and modulation of voltage vectors in different sectors with only 1 prediction. Deadbeat control on the d-q axis current is performed simultaneously to obtain the duty cycle for two fixed voltage vectors. The output voltage vectors can cover any amplitude and direction, effectively reducing current ripple and phase current harmonics. Simulations and experiments confirm the method's effectiveness and feasibility.

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Dr. Dingdou Wen

Dr. Chaoyi Liu

Dr. Yanqin Zhang

Dr. Zhun Cheng