Asymmetric Cascaded Transformer Multilevel AC-DC Converter

被引：0
|
作者：
Gehrke, Bruna Seibel [1 ]
Jacobina, Cursino Brandao [1 ]
de Freitas, Nayara Brandao [2 ]
da Silva, Italo Roger Ferreira Moreno Pinheiro [3 ]
de Sousa, Reuben Palmer Rezende [4 ]
机构：
[1] Univ Fed Campina Grande, Dept Elect Engeneering, Postgrad Program Elect Engeneering COPELE, BR-58429900 Campina Grande, PB, Brazil
[2] Siemens Energy, D-91058 Erlangen, Germany
[3] Fed Univ Paraiba UFPB, Dept Renewable Energy Engn, BR-58051900 JoaoPessoa, PB, Brazil
[4] Univ Fed Pernambuco, BR-50740600 Recife, PE, Brazil
来源：
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2024年 / 60卷 / 02期
关键词：
Voltage control; Power transformer insulation; Transformers; Legged locomotion; Voltage; Capacitors; Insulated gate bipolar transistors; AC-DC converter; multilevel systems; asymmetric cascaded transformer; SINGLE-PHASE CONVERTER; INVERTER TOPOLOGY; DESIGN;
D O I：
10.1109/TIA.2023.3344416
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This article presents a multilevel single-phase rectifier with cascaded transformers and two dc links. The configuration is composed of k cascaded transformers, which isolate the load from the power source, and 2(k+1) two-level (2L) legs, in which some insulated-gate bipolar transistor (IGBT) legs can be replaced by diode legs if the bidirectional operation is not required. The configurations have different turns and dc-link voltage ratios, characterizing an asymmetric configuration. In addition, the second dc link is used to increase the number of voltage levels, which results in better input voltage quality. This dc link has a lower voltage and can be a floating capacitor. Furthermore, the nearest-level control (NLC) technique is used to generate voltage with high power quality. The proposed configurations are compared with conventional configurations. Finally, experimental results are shown to demonstrate the feasibility of the system.
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页码：3373 / 3382
页数：10
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