具有储能环节的电力电子变压器电能质量研究  

Research on power quality of power electronic transformer with energy storage link

作　　者：党存禄[1,2,3] 慈航乐 党媛 Dang Cunlu;Ci Hangle;Dang Yuan(College of Electrical and Information Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Key Laboratory of Gansu Advanced Control for Industrial Processes,Lanzhou 730050,China;National Experimental Teaching Center of Electrical and Control Engineering,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学电气工程与信息工程学院,甘肃兰州730050 [2]甘肃省先进工业过程控制重点实验室,甘肃兰州730050 [3]兰州理工大学国家级电气与控制工程实验教学中心,甘肃兰州730050

出　　处：《电子技术应用》2019年第3期118-121,126,共5页Application of Electronic Technique

基　　金：甘肃省住房和城乡建设厅建设科技项目计划(JK2018-21)

摘　　要：为解决电力电子变压器无法抵抗电网电压中断这一问题,将储能环节与电力电子变压器相结合进行研究。其中储能环节由超级电容和双向DC/DC变换器所构成。当电网中发生电压中断时,具有储能环节的电力电子变压器可以维持其低压侧直流电压的稳定。给出储能环节中的主要参数与控制策略,在Simulink中建立仿真实验。仿真结果证实:具有储能环节的电力电子变压器具有抵抗电网电压中断的能力,使电网中的设备安全、稳定运行。To overcome the failure of power electronic transformer in resisting input voltage interruption in power grid, a combination between energy storage link and PET( power electronic transformer) is utilized. The energy storage link consists of an ultracapacitors and a bidirectional DC/DC converter. When input voltage interruption occurs, PET with energy storage link can maintain PET ′ s low DC voltage to be stable. The main parameters of energy storage link are analyzed, the control strategy of the link is designed, and the simulation experiment is built in the MATLAB/Simulink. The simulation experiment results verify the ability of a diagram of PET with energy storage link can resist input voltage interruption in power grid, making the safe and stable operation of equipment in power grid.

关 键 词：电力电子变压器 储能 超级电容 双向DC/DC变换器 电压中断 

分 类 号：TM41[电气工程—电器]