摘要
由于LCL滤波器针对高频谐波的滤除效果优于L型滤波器,因而广泛应用于电流源控制型的光伏并网逆变电路中,但也导致了基于LCL滤波器的光伏并网逆变器控制策略更为复杂,因此本文并从并网控制策略角度分析了间接电流控制与直接电流控制两种并网策略,并预测了未来光伏发电系统并网控制策略的发展趋势。
With the fact that the filtering effect aiming at high frequency harmonics of LCL filter is better than L filter, the former is widely applied to current source controlled photovoltaic grid-connected inverter circuit, which, at the same time, complicates the corresponding control strategy. Therefore, this paper analyzes the indirect and direct current control from the view of grid connecting control strategy, and predicts its developing trend.
出处
《变频器世界》
2010年第3期51-56,共6页
The World of Inverters
关键词
光伏发电
逆变器
LCL滤波器
并网控制
Photovoltaic generation Inverter LCL filter Grid-connected control
