摘要
提出一种新颖的基于电压源型变流器(voltage source converter,VSC)能量回馈型电力电子负载主电路拓扑。其由背靠背H桥构成,负荷侧变流器采用H桥级联以提高电压等级,并网侧变流器采用H桥并联以提高电流容量。网侧变流器和负荷侧变流器采用解耦控制方法,负荷侧变流器采用PQ解耦控制模拟负载消耗功率;网侧变流器采用直流电压稳定并保证并单位功率因数并网,并将负荷侧吸收的有功功率馈送回电网。建立基于PSCAD/EMTDC软件的电力电子负载仿真模型,设计制作一台400V/100kVA低压原理样机进行实验验证,仿真和实验结果表明提出的电力电子负载的主电路拓扑和控制方法是有效可行的。
This paper proposed a novel main circuit topology of energy feedback power electronic load based on voltage source converter.The main circuits compose of back-to-back H-bridges,the load side converter adopt H-bridges series connected to improve voltage rating.The grid side converter adopt H-bridges parallel connected by multi windings transformer to enlarger current capacitor.The two side converters is decoupling controlled,the load side converter is controlled by active power and reactive power decoupling control to simulate the power consumed by load.The gird side converter is adopted DC voltage stable and unit power factor grid-connected control,and feedback the active power absorbed from the load side to the grid side.The simulation model of power electronic load is fulfilled by the platform of PSCAD/EMTDC,and the low voltage 400 V/100 kVA prototype is controlled and designed for experimental research.The simulation and experimental results verify that the proposed main circuit topology and control strategy is effective for controllable power electronic load.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2010年第18期62-66,共5页
Proceedings of the CSEE
基金
"十一五"国家科技支撑计划重大项目(2007BAA12B03)~~
关键词
电压源变流器
电力电子负载
控制方法
解耦控制
voltage source converter（VSC）
power electronic load（PEL）
control method
decoupling control
