A Single-Phase Hybrid Six-Leg AC-DC-AC Multilevel Converter

被引：0
|
作者：
Lucena da Costa, Andre Elias [1 ]
Jacobina, Cursino Brandao [1 ]
Rocha, Nady [2 ]
机构：
[1] Fed Univ Campina Grande UFCG, BR-58429900 Campina Grande, Paraiba, Brazil
[2] Fed Univ Paraiba UFPB, Dept Elect Engn, Joao Pessoa, Paraiba, Brazil
来源：
2019 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) | 2019年
关键词：
POWER; CAPACITOR;
D O I：
10.1109/ecce.2019.8912651
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
This paper presents a single-phase hybrid six-leg AC-DC-AC multilevel converter. The configuration is composed of a three-leg neutral point clamped (NPC) converter connected in series with a three-leg two-level converter. The proposed converter provides a sinusoidal input current with unitary input power factor and it feeds the load with a stable AC voltage. The system model, operation principles and a control strategy are presented and discussed. Additionally, a space-vector PWM technique is developed to control the dc-link capacitors, produce optimal voltage waveforms and to reduce the switching losses. The space-vector strategy guarantees nine-level output voltage waveforms at both input and output converter sides. Experimental and simulation results are presented to validate the theoretical studies.
引用
收藏
页码：3563 / 3570
页数：8
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