摘要
现有的电力电子变压器的能级变换级数较多,导致效率不高、体积庞大、成本高,制约了其在实际中的应用。首先,基于混频调制技术,提出了两种新型的基于级联H桥变流器结构的电力电子变压器拓扑,以减少变换级数并实现多端口输入/输出,有利于提升功率密度。然后,详细分析了该电力电子变压器的设计方法与控制策略,利用Simulink验证了所提电力电子变压器拓扑及控制策略的可行性,并与传统电力电子变压器拓扑进行了对比分析。
Many series of power conversion links in the existing power electronic transformer （PET） results in low conversion efficiency, huge volume and high cost, which restricts the practical application. Firstly, according to the mixed-frequency modulation, two novel PETs based on cascade H-bridge converter are proposed, which can reduce the number of power conversion links and achieve multiple input and output ports to improve the power density. Then, the simplified design procedure and control strategy are specifically analyzed, The Simulink is employed to verify feasibility of the proposed topologies and control strategy of PET. Moreover, the proposed topologies are compared to the existing PET topology as well. This work is supported by National.
作者
舒良才
陈武
王琛
马大俊
蒋晓剑
魏星
SHU Liangcai1, CHEN Wui, WANG Chen2, MA Dajuni, JIANG Xiaojian1, WEI Xing3(1. Center for Advanced Power conversion Technology and Equipment, Southeast University, Nanjing 210096 2. State Grid Lianyungang Power Supply Company, Lianyungang 222000, China; 3. NR Electric Co. Ltd., Nanjing 211102, China)
出处
《电力系统自动化》
EI
CSCD
北大核心
2018年第7期146-152,共7页
Automation of Electric Power Systems
基金
国家重点研发计划资助项目(2017YFB0903905)
江苏省研究生实践创新计划项目(SJCX17-0029)~~
关键词
电力电子变压器
级联H桥变流器
混频调制
功率密度
power electronic transformer
cascade H-bridge converter
mixed frequency modulation
power density
