电容器
拓扑(电路)
中点
逆变器
电压
控制理论(社会学)
计算机科学
电气工程
电子工程
工程类
数学
几何学
控制(管理)
人工智能
作者
Sze Ting Lee,Shuyu Cao,Reza Barzegarkhoo,Majid Farhangi,Yam P. Siwakoti
出处
期刊:IEEE Journal of Emerging and Selected Topics in Power Electronics
[Institute of Electrical and Electronics Engineers]
日期:2023-01-01
卷期号:11 (2): 1995-2003
标识
DOI:10.1109/jestpe.2023.3236012
摘要
The conventional active neutral-point-clamped (ANPC) multilevel inverters are popular for single-phase applications owing to their advantage of mitigating high-frequency common-mode voltage (CMV). With the ac neutral connected to the midpoint of dc link, their voltage gain is restricted to only half. For boosting output voltage, a two-stage structure by adding a frontend dc–dc boost converter is commonly used. This article investigates the performance of the conventional two-stage 5-level ANPC inverter and proposes an improved topology by splitting the dc-link midpoint and cross clamping them to the dc-link capacitors. While using the same number of power devices and retaining the advantages of the conventional two-stage 5-level ANPC topology, such as high-frequency CMV mitigation and continuous dc source current, the proposed 5-level split-midpoint cross-clamped (5L-SMCC) inverter achieves several advantages, such as higher voltage gain, lower voltage across dc-link capacitors, lower inverter voltage stress, and natural voltage balancing for all capacitors without requiring any balancing controller or sensor. In addition, it saves one capacitor by eliminating the flying capacitor of the conventional 5-level ANPC inverter. The operation of the proposed 5L-SMCC inverter is thoroughly analyzed. For validation, simulation and experimental results are presented.
科研通智能强力驱动
Strongly Powered by AbleSci AI