摘要
微网互联变流器是交直流混合微网的接口,其运行方式要求辅助电源可双网供电并实现无缝切换,而常规辅助电源无法满足要求。为了解决这一问题,文中提出双网供电的混合微网互联变流器辅助电源拓扑与无缝切换策略。辅助电源采用前后级变换架构,通过前级双电源相互供电和控制环路的自动启动,实现直流微网和交流微网间的无缝切换。最后实现了设计方案并进行实验验证,实验结果表明所设计的辅助电源可满足混合微网互联变流器的要求。
The interconnection converter in the microgrid is the interface of the AC/DC hybrid microgrid,and its operation mode requires that the auxiliary power supply can realize dual sub-network power supply and seamless switching.The conventional auxiliary power supply cannot meet this requirement.Therefore,a topology and seamless handoff strategy for auxiliary power supply of the interconnection converter is proposed for the hybrid microgrid with dual sub-network power supply.The front and back stage transformation architecture is adopted for the auxiliary power supply.The seamless switching between the DC microgrid and AC microgrid is realized by means of mutual power supply of the front-stage dual power supplies and the automatic startup of the control loop.The design scheme was implemented,and the experimental verification was conducted.The experimental results show that the designed auxiliary power supply can meet the requirements of interconnection converters in the hybrid microgrid.
作者
黄建明
薛慧杰
田启川
HUANG Jianming;XUE Huijie;TIAN Qichuan(School of Electrical and Information Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)
出处
《现代电子技术》
北大核心
2019年第4期57-60,共4页
Modern Electronics Technique
基金
北京市自然科学基金资助项目(3152008)~~
关键词
交流微网
直流微网
混合微网
辅助电源
互联变流器
无缝切换
AC microgrid
DC microgrid
hybrid microgrid
auxiliary power supply
interconnection converter
seamless switching
作者简介
黄建明(1988-),男,山东人,硕士研究生,主要研究方向为微网技术;薛慧杰(1974-),男,山西人,博士,讲师,主要研究方向为新能源发电与微网技术;田启川(1971-),男,山西人,博士,副教授,主要研究方向为模式识别与智能控制
