Independent Cost Function Model Predictive Current Control for SMPMSM Drive

Le résumé fourni par la source

To achieve controllabled-axis andq-axis current performance with inverter switching frequency reduction, an independent cost function model predictive current control (ICF-MPC) is proposed for surface mounted permanent magnet synchronous motor (SMPMSM) drives. First, two independent cost functions are designed ford-axis andq-axis individual current error. Then, a rectangular constraint that satisfiesdq-axes current performance is presented to obtain the voltage vector space. Subsequently, a direct selection and calculation method is proposed to obtain the reference voltage vector, based on the principle of balancing current ripple and switching frequency. The proposed ICF-MPC achieves simultaneous optimization ofd-axis current performance,q-axis current performance, and switching frequency without weighting factors. The controllable current performance and switching frequency reduction are demonstrated by the experimental results.

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