摘要
串联型地铁能馈装置的电能质量高、重量体积小,可以将地铁制动时的能量回收到电网,极大地节约了电能。但当回馈功率达到额定功率后,串联型地铁能馈逆变器的直流电压会产生振荡,造成能馈系统跳闸,严重影响了串联型地铁能馈的应用推广。所设计的均压环方案不仅可以抑制电压振荡,而且能够保证地铁能馈达到最大功率运行点。最后通过搭建2 MW地铁能馈的RTDS仿真系统,验证了所提分析的正确性和有效性。
Series subway energy feedback device has high power quality and small weight.It can recover the energy of subway braking to the power grid and save energy greatly.However,when the feedback power reaches the rated power,the DC voltage of the inverters will oscillate which makes the energy feed system trip,seriously affecting the application and promotion of the energy feed in series subway.The designed voltage-sharing ring scheme not only can suppress voltage oscillation,but also ensure that the subway can feed to the maximum power operation point.The correctness and validity of the analysis are verified by building a RTDS simulation system of 2 MW subway energy feedback.
作者
刘洪德
吴扣林
祁琦
谢晔源
LIU Hong-de;WU Kou-lin;QI Qi;XIE Ye-yuan(NARI-Relays Electric Co.,Ltd.,Nanjing 211102,China)
出处
《电力电子技术》
CSCD
北大核心
2020年第2期89-91,共3页
Power Electronics
关键词
能馈
电能质量
均压环
energy feedback
power quality
voltage-sharing ring
