An Improved Multi-Vector Model Predictive Torque Control Based on Virtual Voltage Vector

This paper proposes an improved multi-vector model predictive torque control (MPTC) method based on virtual voltage vector (VVV) for dual three-phase permanent magnet synchronous motor (DTP-PMSM), which optimizes the determination of the reference voltage vector (RVV) and expands the vector range by applying multiple voltage vectors. Firstly, RVV is calculated based on the o-p stator flux coordinate system, thereby achieving accurate vector calculation and high torque tracking performance. Furthermore, the number of candidates is brought down from 12 to 5. Secondly, two VVVs and a null vector are chosen to synthesize each candidate voltage vector, extending the synthesis range to the whole plane, which realizes the flexible adjustment of the amplitude and phase of the effective voltage vectors. Experimental results are provided to verify the effectiveness of the proposed MPTC method.