摘要
根据单相全桥主电路工作原理,指出了由全桥电路构成的变换器是一个能量可双向流动的变换器,提出了SPWM调制光伏并网发电系统。为了防止直流侧电压失控,应采用电网电压前馈控制。根据系统的控制框图, 分析了系统的稳定性和控制器参数的整定以及单输入系统的跟踪误差,并给出了解决方法。
A bidirectional converter made up of full-bridge circuit for the single-input single-phase SPWM modulated photovoltaic grid-connected system was described and feedforward control for the DC voltage out of control was used. The stability of the system and the adjustment of the controller parameter in the control block diagram were discussed. Finally the track error of single-input system was analyzed and the solving method was given.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2004年第6期794-798,共5页
Acta Energiae Solaris Sinica
关键词
单输入单相光伏并网
前馈控制
跟踪误差
Control systems
Electric current control
Networks (circuits)
Photovoltaic effects
Pulse width modulation
Voltage control
