标题：Model Predictive Control Method to Reduce Common-Mode Voltage and Balance the Neutral-point Voltage in Three-Level T-type Inverter
作者：Xing, Xiangyang; Chen, Alian; Zhang, Zicheng; Chen, Jie; Zhang, Chenghui
作者机构：[Xing, Xiangyang; Chen, Alian; Zhang, Zicheng; Chen, Jie; Zhang, Chenghui] Shandong Univ, Sch Control Sci & Engn, Jinan 250061, Peoples R China.
会议名称：31st Annual IEEE Applied Power Electronics Conference and Exposition (APEC)
会议日期：MAR 20-24, 2016
来源：APEC 2016 31ST ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION
关键词：model predictive current control; three-level T-type inverters;; common-mode voltage; neutral-point potential (NP) balance
摘要：The three-level T-type inverter has outstanding performances and better in the switching device selection than a two-level inverter. However, the problem of common-mode voltages and neutral-point potential (NP) unbalance is generated. This paper proposes a model predictive control method for reducing the common mode voltage and balancing the neutral-point potential (NP). Based on the relationship between the switching states and common-mode voltage (CMV), the 19 voltage switching vectors are adopted to reduce the CMV. In addition, the P-type and N-type small vectors are selected to control the NP balance. Without utilizing the redundancy zero and small vectors, the common-mode voltage controlled by the proposed MPC algorithms can be restricted within +/- V-dc/6. Furthermore, the proposed technique can balance the DC-link voltage with reduced CMV. The proposed method has been verified by the lab experiment.