Abstract
The conventional model predictive current control for dual three-phase permanent magnet synchronous motor (DTP-PMSM) adopts 12 outermost vectors in α-β subspace to the machine, which cause a large computation burden. In the meantime, adding the harmonic current evaluation term in the cost function is fail to suppress the harmonic currents effectively, and has an impact on the fundamental subspace control. Therefore, this paper proposes a deadbeat model predictive control method for DTP-PMSM. First, the reference voltage vector is acquired by deadbeat control. Then, the outermost vectors and sub-peripheral vectors are used to compose a synthesizing vector for suppressing harmonic currents. 4 synthesizing vectors close to the reference voltage vector are selected as the prediction vectors, and the synthesizing vector with the minimum error from the reference voltage vector is determined as the optimum vector by the cost function. Finally, the simulation results show the effectiveness and feasibility of the proposed method.
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