中国电机工程学报Issue(31)：5563-5570,8.DOI:10.13334/j.0258-8013.pcsee.2014.31.013
孤岛微网中固态变压器间环流抑制研究
Researches on Restraining Circulating Currents of Solid State Transformers in Islanding Mode Microgrids
摘要
Abstract
In the future renewable electric energy delivery and management (FREEDM) microgrid, there will be circulating currents among solid state transformers (SSTs) due to the voltage differences and disproportionate output impedances, particularly in the islanding mode. The output voltage differences were fed back to reduce the errors of their phases and amplitudes in the droop controller. Meanwhile, the adjustable virtual impedance based on the fuzzy control is adopted to make the output impedance of SST match its rated power more exactly using instantaneous circulating current feedback. Simulations and analysis show that the control strategy can restrain the circulating currents well, and can improve the output voltage stability of SST.关键词
未来可再生电能传输和管理微网/固态变压器/电压偏差反馈调节/动态虚拟阻抗/环流抑制Key words
future renewable electric energy delivery and management (FREEDM) microgrid/solid state transformer/voltage differences regulating/adjustable virtual impedance/circulating current restraining分类
信息技术与安全科学引用本文复制引用
张明锐,林显琦,孙华..孤岛微网中固态变压器间环流抑制研究[J].中国电机工程学报,2014,(31):5563-5570,8.基金项目
上海市自然科学基金项目(13ZR1444400)；上海市科委资助项目(13DZ1200403)；国家高技术研究发展计划(863计划)项目(2013AA040302)。@@@@Project Supported by Shanghai Natural Science Foundation (13ZR1444400) （13ZR1444400）
The Program of Shanghai Science and Technology Commission (13DZ1200403) （13DZ1200403）
The National High Technology Research and Development of China 863 Program (2013AA040302) （2013AA040302）
