Impact of Practical Issues on the Harmonic Performance of Phase-Shifted Modulation Strategies for a Cascaded H-Bridge StatCom

被引：55
|
作者：
Townsend, Christopher D. [1 ]
Summers, Terrence J. [1 ]
Betz, Robert E. [1 ]
机构：
[1] Univ Newcastle, Sch Elect Engn & Comp Sci, Callaghan, NSW 2308, Australia
来源：
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2014年 / 61卷 / 06期
关键词：
Control strategy; modulation strategy; multilevel converters; static compensators; voltage balancing; MULTILEVEL CONVERTERS; PULSEWIDTH MODULATION; MULTICARRIER PWM; INVERTERS; BREED;
D O I：
10.1109/TIE.2013.2275893
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Phase-shifted carrier (PSC) modulation has become an industry standard in its application to multilevel H-bridge static compensators (H-StatComs). The technique uses the cancellation of harmonics within each phase leg to significantly improve the harmonic performance relative to the switching frequency. This paper investigates subtle practical implementation issues which deteriorate the harmonic performance of this technique. The effects of nonuniform dc bus voltages and capacitor voltage balancing strategies are investigated. Simulation and experimental results are presented which show that the harmonic performance of the PSC technique deteriorates as the number of voltage levels produced by the H-StatCom increases.
引用
收藏
页码：2655 / 2664
页数：10
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