摘要
构建基于Nyquist稳定判据的联网光伏逆变系统的稳定性分析方法,分析电网阻抗对联网光伏逆变系统运行稳定性影响,并提出一种根据电网阻抗大小改进系统控制器增益的控制参数整定方法,以提高联网光伏逆变系统的运行稳定性。设计算例和仿真结果验证了理论分析及参数整定方法的有效性和可行性。
A stability analysis method of grid-connected photovohaic inverter system （GC-PIS） based on Nyquisting stability criterion was established to analyze the grid impedance impact on the stability of grid-connected photovoltaic inverter control system, and a control parameters tuning method to improved control system gain according to grid impedance has been proposed to improve the stability of grid-connected photovoltaic inverter system. The design example and simulation have been verified the practicability and availability of the theoretical analysis and proposed control parameter tuning.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2013年第11期1853-1859,共7页
Acta Energiae Solaris Sinica
基金
国家自然科学基金面上项目(51277024)
国家重点基础研究发展(973)计划(2013CB228201)
吉林省科技发展计划重点科技攻关项目(20130206082SF)
关键词
稳定性
弱电网
联网光伏逆变器
控制策略
参数整定
stability
weak grid
grid-connected photovoltaic inverter
control strategy
parameter tuning
