摘要
提出了一种双变压器三电平变换器,通过在主桥臂并联一组辅助桥臂,再将辅助变压器的二次侧串联至主变压器的一次侧实现。该变换器不仅保留了传统三电平变换器的优点,同时通过辅助桥臂的通断从而实现宽范围输出电压;详细分析了双变压器三电平变换器的工作原理,分别比较了该变换器和传统变换器在不同输出范围下的效率。研制了一台1 500 W的原理样机,实验结果验证了理论分析的正确性以及该新型变换器的可行性。
This paper proposed a new interleaved three-level converter with dual transformers, which was realized by paralleling an auxiliary bridge arm to the main bridge arm and series connecting the secondary side of the auxiliary transformer series to the primary side of the main transformer.The advantages of traditional three-level converter were maintained, and wide range output voltage was obtained through the on/off of auxiliary arm. It analyzed the working principle of dual transformer three level converter, compared the efficiency of the converter and the traditional converter in different output range. Finally, a prototype of 1 500 W was built to verify the correctness of the theoretical analysis and the feasibility of the new converter.
作者
袁义生
梅相龙
毛凯翔
Yuan Yisheng;Mei Xianglong;Mao Kaixiang(School of Electrical and Automation Engineering, Eost China Jiaotong University, Nanchang, 330013, China;State Key Laboratory of High Power AC Orive Electric Locomotive System Integration,Zhuzhou,412000, China)
出处
《华东交通大学学报》
2018年第2期105-112,共8页
Journal of East China Jiaotong University
基金
国家自然科学基金项目(51467005)
江西省重点研发计划项目(20171BBE50018)
大功率交流传动电力机床系统集成国家重点实验室开放项目(2017ZJKF10)
关键词
双变压器
宽范围输出
三电平变换器
dual transformers
wide range output
three-level converter