摘要
为提高并网系统的稳定性和获得高质量的并网电流,将简化的五电平逆变器拓扑电路应用于并网系统,采用T型滤波器滤波、电容电流内环,并网电流外环的双闭环控制提高系统稳定性.针对PI控制的特点,研究在减小稳态误差和实现单位功率因数并网的参数条件.所设计的系统综合了五电平逆变器拓扑电路、双闭环控制、PI控制的优点,仿真试验验证了该设计的合理性、有效性和可行性.
In order to improve the stability of the grid-connected system and get the high quality of the current, the simplified five level inverter is used with T type filter and double closed loops of the capacitor current inner loop and grid connected current outer loop to improve system stability. According to the characteristics of PI control, the parameters are studied on steady-state error reducing and unit power factor. The system combines the advantages of the five-level inverter, double closed loops and PI control. The simulation results show that the design is effective and feasible.
出处
《河南科学》
2013年第12期2199-2202,共4页
Henan Science
基金
河南省基础与前沿技术研究项目(132300410361)
郑州市科技攻关项目(131PPTGG419-1)
河南省教育厅科学技术研究重点项目(14A470008)
