对永磁同步电机的3种模型预测电流控制方案进行了比较研究。传统模型预测电流控制策略在单个采样周期中输出一个电压矢量，选择使价值函数最小的电压矢量输出。双矢量模型预测电流控制策略在单个采样周期中输出2个电压矢量，并分别计算2个电压矢量的作用时间，使输出电压矢量与期望电压矢量更加接近。三矢量模型预测电流控制策略在单个采样周期中输出2个有效电压矢量和一个零矢量，扩大备选电压矢量的覆盖范围，减小电流脉动。为了比较3种控制策略的动、静态性能，进行了对比仿真分析。仿真结果表明，多矢量模型预测电流控制具有良好的动静态性能，与传统模型预测电流控制相比，能有效地减小电流脉动。

The schemes of three model predictive current control (MPCC) for permanent magnet synchronous motor (PMSM) is compared. The conventional MPCC strategy applies one voltage vector which can minimizes a cost function in each sampling period. The two-vector-based MPCC strategy outputs two voltage vectors in each sampling period, and calculates the working time of them respectively. The method makes the resulting voltage vector closer to the expected voltage vector. The three-vector-based MPCC strategy outputs two optimal voltage vectors and one zero vector in each sampling period. In this method, the coverage range of alternative voltage vectors is expanded and the current ripples are reduced. The dynamic performance and steady state behavior of three control schemes is compared by the simulation experiments. Simulation results show that three-vector-based or two-vector-based MPCC strategy has good steady state and dynamic performance. Compared with the conventional MPCC strategy, the proposed method can reduce the current ripples effectively.

国家自然科学基金项目（51507148）；风力发电机组及控制湖南省重点实验室开放研究基金项目（2016FLFDYB02）