Voltage Balancing of a Modular Neutral-Point-Clamped Converter With a Carrier-Based Modulation Scheme

被引：11

作者：

Dekka, Apparao ^{[1
]}

Lizana Fuentes, Ricardo ^{[2
]}

Narimani, Mehdi ^{[3
]}

Wu, Bin ^{[1
]}

机构：

[1] Ryerson Univ, Dept Elect & Comp Engn, Toronto, ON M5B 2K3, Canada

[2] Univ Catolica Santisima Concepcion, Dept Environm & Energy, Concepcion 4090541, Chile

[3] McMaster Univ, Dept Elect & Comp Engn, Hamilton, ON L8S 4L8, Canada

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2018年 / 33卷 / 10期

关键词：

Capacitor voltage control; modular converter; modular neutral-point-clamped (MNPC) converter; pulsewidth modulation;

D O I：

10.1109/TPEL.2018.2807800

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：

The five-level modular neutral-point-clamped (5L-MNPC) converter is realized by connecting two three-level neutral-point-clamped modules in series. For five-level operation, each dc-bus capacitor voltage of the modular neutral-point-clamped topology should be regulated at one-fourth of the net dc-bus voltage. In this letter, a simple voltage-balancing approach based on the carrier-based modulation scheme is proposed to achieve the above objectives. The proposed approach uses the redundancy switching states along with the current direction and the instantaneous value of the dc-bus capacitor voltage to achieve the voltage balancing in the 5L-MNPC topology. The dynamic performance of the 5L-MNPC topology with the proposed voltage-balancing approach is verified experimentally.

引用

页码：8208 / 8212

页数：5

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