The predictive torque control (PTC) scheme for four‐level open‐end winding permanent magnet synchronous motor drive (OEW‐PMSM) is introduced in this article, owing to its simple and intuitive algorithm. However, the classical PTC‐PMSM drive performance mainly depends on the weighting factors (WF) used in cost function (CF) and its selection is a cumbersome process. Hence, a new approach for eliminating these WFs is proposed for four‐level PTC‐OEW‐PMSM drive without dropping its benefits in classical PTC method. The torque and flux objective errors are considered as two individual CFs and evaluated with all available voltage vectors (VVs). Then, the set of VVs corresponding to the ascending orders of CFs magnitudes is considered as separate VVs groups. The common VV present in both these VV groups represents the minimised torque error, flux error and treated as the optimal VV for the next control period. As a result, the monotonous flux WF tuning is no more required. The limited VVs strategy is also proposed for reducing the computational burden of PTC. The proposed four‐level PTC method is initially tested in MATLAB/SIMULINK and experimentally verified on PMSM drive.

中文翻译：

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四级开放式绕组永磁同步电动机驱动器的有效预测转矩控制方案

由于其简单直观的算法，本文介绍了用于四级开放式绕组永磁同步电动机驱动器（OEW-PMSM）的预测转矩控制（PTC）方案。但是，传统的PTC-PMSM驱动器性能主要取决于成本函数（CF）中使用的加权因子（WF），其选择过程繁琐。因此，针对四级PTC-OEW-PMSM驱动器，提出了一种消除这些WF的新方法，同时又不放弃其在传统PTC方法中的优势。转矩和磁通目标误差被视为两个单独的CF，并使用所有可用的电压矢量（VV）进行评估。然后，将与CFs幅度的升序相对应的一组VV视为独立的VV组。这两个VV组中都存在的公共VV表示最小的扭矩误差，磁通误差，并视为下一个控制周期的最佳VV。结果，不再需要单调通量WF调整。还提出了有限的VVs策略来减少PTC的计算负担。提议的四级PTC方法最初在MATLAB / SIMULINK中进行了测试，并在PMSM驱动器上进行了实验验证。