Model Predictive-Based Voltage Balancing Control for Single-Phase Three-Level Inverters

被引：8

作者：

Liu, Yonglu ^{[1
,2
]}

Mao, Xiangxu ^{[1
,2
]}

Ning, Guangfu ^{[1
,2
]}

Dan, Hanbing ^{[1
,2
]}

Wang, Hui ^{[1
,2
]}

Su, Mei ^{[1
,2
]}

机构：

[1] Cent South Univ, Sch Automat, Changsha 410083, Peoples R China

[2] Hunan Prov Key Lab Power Elect Equipment & Gird, Changsha 410083, Peoples R China

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2021年 / 36卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Voltage control; Inverters; Switches; Capacitors; Sensors; Predictive models; Prototypes; Model predictive control; neutral-point (NP) voltage balance; single-phase three-level inverters; voltage sensors;

D O I：

10.1109/TPEL.2021.3077011

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Neutral-point voltage balance is critical for safe operation of single-phase three-level inverters. This issue can be overcome by selecting proper redundant small vectors. However, two voltage sensors are usually required to sample the split dc-link voltages. This letter proposes a model predictive-based voltage balancing method to reduce the usage of the voltage sensors (saving one voltage sensor). The required voltage information, which is essential for selecting the appropriate small vector, is obtained by comparing the current tracking errors. Consequently, the cost is reduced and the reliability is improved. A prototype is finally built to validate the feasibility and effectiveness of the proposed control method.

引用

页码：12177 / 12182

页数：6

共 12 条

[1] Medium-Voltage Multilevel Converters-State of the Art, Challenges, and Requirements in Industrial Applications [J].