摘要
近年来电力电子变压器得到越来越多的关注,涌现出一系列比较新颖的理论研究成果.电力电子变压器通常包括3部分:输入整流级;中间隔离级;输出逆变级.其主要优点有:体积小、重量轻、无电网污染;输出电压和功率稳定且可调;输入端功率因数可调,且可以实现高功率因数工作;兼有断路器的功能,可瞬时关断故障电流.首先介绍了传统级联式电力电子变压器的设计原理.然后以具有功率因数校正功能的单级高频隔离反激功率变换电路拓扑为基础,对将该电路拓扑级联起来构成的高电压功率转换电路进行了讨论,分析了该级联电路控制器的设计方法,明确了控制器结构.文中以级联2个H桥为例进行了理论分析,并通过仿真验证了所讨论拓扑结构可行性和有效性.
Recently, the electric power electronic transformer has become a research hotspot of scholars. A series of inovative theoretical researches are emerging. Power electronic transformer mainly includes three parts： input rectification stage; intermediate isolation stage; output inverter stage. Its main advantages are： small size, light weight, no grid pollution; output voltage and power stability, and adjustable; adjustable input power factor, and can work in high power factor; fuction of circuit breakers and the instantaneous error current turn-off. The traditional design principle of power electronic transformer was introduced. Based on the topology of single-stage flyback PFC, the circuits, which can be worked under the high voltage circumstances were cascaded. The design method of the cascade circuit controller was analyzed, and the controller structure was defined. The circuit topology of two cascaded H-bridges was analyzed as an example.The feasibility and effectiveness of topology was verified by the simulation.
作者
闻飞
王聪
Wen Fei Wang Cong(The Hydrological Bureau（ the Information Center）of the Huaihe River Committee, Bengbu 233001, China China University of Mining ＆ Technology（ Beijing）, Beijing 100083, China)
出处
《湖南科技大学学报（自然科学版）》
CAS
北大核心
2016年第3期38-43,共6页
Journal of Hunan University of Science And Technology：Natural Science Edition
基金
国家自然科学基金重点资助项目(51077125)
