Abstract A new model predictive flux control scheme with two-vector is proposed in a manner where a novel vector subregion is adopted. The proposed control scheme can improve the steady-state control performance of permanent magnet synchronous motor (PMSM) supplied by a three-level inverter, and reduce the computation burden. Firstly, the control of electromagnetic torque and flux is transformed into the control of single stator flux vector, and thus the weighting factor in traditional predictive torque control can be eliminated. Secondly, the influence of basic voltage vectors in different sectors on system operation is analyzed in depth, and the number of alternative vectors is reduced to 1-3 in terms of virtual slope. Meanwhile, to reduce the torque ripple, the optimization criterion of duty cycle is established, and the control performance of double non-zero vector is further obtained. Finally, the simulation and experimental results show the effectiveness of the proposed control strategy.
Yu Feng,Zhu Chenguang,Wu Xiaoxin等. Two-Vector-Based Model Predictive Flux Control of Three-Level Based Permanent Magnet Synchronous Motor with Sector Subregion[J]. Transactions of China Electrotechnical Society, 2020, 35(10): 2130-2140.
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2020, Vol. 35 
