This paper describes a model predictive control method for Nine-Switch Inverter (NSI)-based AC drive systems. Two separate three-phase AC loads (dual-output mode operation) or a single six-phase load (six-phase mode operation) can be connected to output terminals of an NSI. Three different Finite Control Set Model Predictive Control (FCS-MPC) strategies are presented and described. Firstly, dual-output mode FCS-MPC provides flexible control of detached load stages without any undesirable interaction. When disseminated loads are needed to be controlled, the output terminals of NSI are individually connected to separate load stages. Secondly, six-phase mode FCS-MPC provides robust control of six-phase load current. Thirdly, the predictive control scheme for controlling multiple induction machines is presented. Experimental and simulation tests have demonstrated that the proposed method exhibits a secured converter operation. The proposed predictive control strategies of Nine-Switch Inverter are accomplished using a Field Programmable Gate Arrays (FPGA).

本文介绍了一种基于九开关逆变器（NSI）的交流驱动系统的模型预测控制方法。可以将两个单独的三相AC负载（双输出模式操作）或一个单独的六相负载（六相模式操作）连接到NSI的输出端子。提出并描述了三种不同的有限控制集模型预测控制（FCS-MPC）策略。首先，双输出模式FCS-MPC提供了对分离的负载阶段的灵活控制，而没有任何不希望的相互作用。当需要控制分散的负载时，NSI的输出端子分别连接到单独的负载级。其次，六相模式FCS-MPC提供了对六相负载电流的强大控制。第三，提出了控制多台感应电机的预测控制方案。实验和仿真测试表明，所提出的方法具有安全的转换器操作。九开关逆变器的预测控制策略是通过现场可编程门阵列（FPGA）实现的。