电测与仪表2017，Vol.54Issue(2)：68-75,8.
配电网三相电压源型逆变器的接口滤波器设计研究
Design consideration of interface-filter for three-phase voltage source inverter in distributed power grid
摘要
Abstract
The use of interface-filter for reducing current harmonics has been commonly used for three-phase voltage source inverters (VSL) connected to the power grid.However,the power grid in a typical distribution system is nonideal,presenting itself as a voltage source with series connection impedance.Thus,an inverter using an interface-filter may interact with other inverters connecting to the grid via the non-ideal grid.In this paper,the irreversible instability phenomenon of the three-phase voltage source inverters with filter through impedance coupling is studied.We show that resonant oscillation occurs in the distributed power grid,even if the voltage source inverter with interface-filter is well designed for standalone applications.Specifically,the stable operating region in selected parameter space is studied.A small-signal loop analysis is performed to predict this stability problem and to locate the boundary of the instability using an impedance approach.Finally,the phenomenon and design-oriented stability boundaries are verified by cycle-by-cycle simulations and experimental measurements.关键词
接口滤波器/稳定性分析/交互系统/三相电压源型逆变器Key words
interface-filter/stability analysis/interacting converters/three-phase voltage source inverter分类
信息技术与安全科学引用本文复制引用
郑志萍,黄萌,彭宇,孙建军,查晓明,杨武盖..配电网三相电压源型逆变器的接口滤波器设计研究[J].电测与仪表,2017,54(2):68-75,8.基金项目
国家自然科学基金资助项目(51277137) （51277137）
福建省教育厅中青年教师科研项目(JAT160772) （JAT160772）
