A Switching-Frequency-Controlled Finite-Control-Set Model Predictive Control Method
Chen Zhuoyi1, Qu Wentai1, Qiu Jianqi2
1. School of Information Science and Engineering NingboTech University Ningbo 315100 China 2. College of Electrical Engineering Zhejiang University Hangzhou 310027 China
Abstract：The finite-control-set model predictive control (FCS-MPC) for the inverters has the advantages of simplicity, fast responsiveness and easy inclusion of multiple objectives. However, the absence of the modulator makes the switching frequency of the inverter vary with various factors such as the working point and system parameters. To solve the problem of variable switching frequency while retaining the advantages of the FCS-MPC, this paper proposed a switching-frequency-controlled FCS-MPC based on the adaptive cost function. The weighting factor of the switching cost is adjusted according to the error between the reference and the sampled frequency to realize the reference tracking. Experimental results on a 3-phase permanent magnet synchronous motor drive validate that the proposed method can track the reference frequency in the full working range, and has robustness against parameter variation, while retaining the advantages of the FCS-MPC.
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2022, Vol. 37 
