大功率并网逆变器冲击电流的抑制  

Suppression of impulse current in high power grid-connected inverter

作　　者：王潜[1] 张晓琳[2] 张宇[2] 王多平[3] 

机构地区：[1]海军工程大学科研部,武汉430033 [2]华中科技大学强电磁工程与新技术国家重点实验室,武汉430074 [3]中国舰船研究设计中心,武汉430064

出　　处：《海军工程大学学报》2013年第6期109-112,共4页Journal of Naval University of Engineering

摘　　要：针对大功率并网逆变器启动时刻存在冲击电流的问题,在dq坐标系下建立数学模型,分析了冲击电流产生的原因。通过对电压矢量控制策略的改进,实现了对并网逆变器启动冲击电流的抑制,并在500kVA并网逆变器上进行实验,其结果验证了该改进控制策略的有效性。To solve the problem of heavy impact current at a time when the high power grid-connecteo inverter makes a start-up, a mathematical model of three-phase inverter is established in the reference frame, for the purpose of analyzing the causes of impact current. The improvement of the control strategy of voltage vector leads to the suppression of the impulse current when the system starts. And the improved current control scheme is applied to a grid-connected inverter with a capability o~ 500 kVA in the experiment. The result shows that the improved current control scheme is effective and reliable.

关 键 词：并网逆变器 冲击电流 PI控制 

分 类 号：TM402[电气工程—电器]