Fixed and Smooth-Switch-Sequence Modulation for Voltage Balancing Based on Single-Phase Three-Level Neutral-Point-Clamped Cascaded Rectifier

被引：12

作者：

He, Xiaoqiong ^{[1
]}

Yu, Haolun ^{[1
]}

Han, Pengcheng ^{[1
]}

Zhao, Zhiqin ^{[1
]}

Peng, Xu ^{[2
]}

Shu, Zeliang ^{[1
]}

Koh, Leonghai ^{[3
]}

Wang, Peng ^{[4
]}

机构：

[1] Southwest Jiaotong Univ, Natl Rail Transit Electrificat & Automat Engn Tec, Sch Elect Engn, Chengdu 611756, Peoples R China

[2] Civil Aviat Flight Univ, Sch Aviat Engn, Aviat Engn Inst, Guanghan 618307, Peoples R China

[3] Nanyang Technol Univ, Energy Res Inst, Singapore 639798, Singapore

[4] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

来源：

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2020年 / 56卷 / 04期

关键词：

Rectifiers; Switches; Voltage control; Modulation; Insulated gate bipolar transistors; Capacitors; Intermodule voltage balancing; smooth switch sequence; three-level neutral-point-clamped cascaded rectifier (3LNPC-CR); voltage balancing boundary; ELECTRONIC TRACTION TRANSFORMER; MULTILEVEL CONVERTERS; STRATEGY; DESIGN; SCHEME;

D O I：

10.1109/TIA.2020.2984193

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this article, a fixed and smooth-switch-sequence modulation strategy is proposed to equalize the dc-link voltages among the cascaded rectifier. The structure of a single-phase three-level neutral-point-clamped cascaded rectifier is studied. Three core steps of this strategy are analyzed respectively, including carrier wave disposition calculation, fixed pulse generator, and voltage rank function. In addition, a criterion of the degree of the load unbalance is established in order to measure the voltage balancing boundary of the presented approach. The superiorities of the proposed control strategy embody the smooth switch sequence, the strong voltage balance capability, as well as the fixed switch sequence. Owe to these advantages, the cascaded rectifier could effectively reduce the switching frequency, achieve the goals of voltage balancing, and reduce the calculation burden of the controller when the number of cascaded modules is large. The effectiveness of the proposed strategy is verified by simulation and experiment results.

引用

页码：3889 / 3903

页数：15

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