Periodically Swapping Modulation (PSM) Strategy for Three-Level (TL) DC/DC Converters With Balanced Switch Currents

被引：14

作者：

Liu, Dong ^{[1
]}

Deng, Fujin ^{[2
]}

Zhang, Qi ^{[3
]}

Chen, Zhe ^{[1
]}

机构：

[1] Aalborg Univ, Dept Energy Technol, DK-9220 Aalborg, Denmark

[2] Southeast Univ, Sch Elect Engn, Nanjing 210000, Jiangsu, Peoples R China

[3] Xian Univ Technol, Dept Elect Engn, Xian 710000, Shaanxi, Peoples R China

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2018年 / 65卷 / 01期

关键词：

DC/DC converter; periodically swapping modulation (PSM); three level (TL); DC-DC CONVERTER; ZERO-VOLTAGE; TOPOLOGIES; RANGE;

D O I：

10.1109/TIE.2017.2714125

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The asymmetrical modulation strategy is widely used in various types of three-level (TL) dc/dc converters, while the current imbalance among the power switches is one of the important issues. In this paper, a novel periodically swapping modulation (PSM) strategy is proposed for balancing the power switches' currents in various types of TL dc/dc converters. In the proposed PSM strategy, the driving signals of the switch pairs are swapped periodically, which guarantees that the currents through the power switches are kept balanced in every two switching periods. Therefore, the proposed PSM strategy can effectively improve the reliability of the converter by balancing the power losses and thermal stresses among the power switches. The operation principle and performances of the proposed PSM strategy are analyzed in detail. Finally, the simulation and experimental results are presented to verify the proposed modulation strategy.

引用

页码：412 / 423

页数：12

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