基于多阶滞环调节器的并网逆变器不平衡控制  

Unbalanced Control of a Grid-connected Inverter Based on Multilevel Hysteresis Regulator

作　　者：陆中凯 李春来 张磊[3] 谢震[1] 

机构地区：[1]合肥工业大学,电气与自动化工程学院,安徽合肥230009 [2]国网青海电力科学研究院,青海西宁810008 [3]中国电力科学研究院,江苏南京210003

出　　处：《电力电子技术》2016年第2期90-93,共4页Power Electronics

基　　金：青海省光伏发电并网技术重点实验室(2014-Z-Y34A)~~

摘　　要：研究了在α,β坐标系上基于多阶滞环电流调节器的三相并网逆变器的控制策略。在不平衡电网电压故障下,充分利用多阶滞环控制的快速性,直接对正负序电流控制,避免电流的正负序分解环节,控制电网负序电流为零、抑制有功功率或无功功率二倍频脉动,以满足电网电压不平衡时并网电流要求。实验结果证明了该方法的有效性及正确性。The control scheme of a three-phase grid-connected inverter is studied with multilevel hysteresis current regulators on the α,β reference frame.In the case of unbalanced grid voltage,the celerity of the multilevel hysteresis is fully taken advantage to control both positive and negative current component direcdy without any decomposition and grid-connected current requirements are satisfied by controlling negative sequence current of the grid to zero,suppressing active or reactive power second pulsations.Experiment verify the effectiveness and correctness of the method.

关 键 词：并网逆变器 电网电压不平衡 多阶滞环调节器 

分 类 号：TM464[电气工程—电器]