摘要
阐述了一种小功率光伏并网逆变器的控制系统.该光伏并网逆变器由DC DC变换器与DC AC变换器两部分组成,其中DC＿DC变换器采用芯片SG3525来控制,DC＿AC变换器采用数字信号处理器TMS320F240来控制.由于数字信号处理器DSP实时处理能力极强,采用合适的算法能确保逆变电源的输出功率因数接近1,输出电流为正弦波形.该控制方案已经在实验室得到验证.
This paper presents design of the control system of a low_power photovoltaic inverter interconnected with electric utility lines. The photovoltaic inverter consists of a DC_DC converter and a DC_AC inverter, and the DC_DC converter is controlled by a SG3525 control chip. The DC_AC inverter is controlled by the utilizing of DSP. Because of the powerful real time processing ability, the power factor of the output of the photovoltaic inverter connected with electric network can be controlled to unity PF by utilizing suitable algorithm. The availability of this control system is verified.
出处
《北方交通大学学报》
CSCD
北大核心
2003年第2期57-61,共5页
Journal of Northern Jiaotong University
关键词
太阳能
光伏系统
逆变器
solar energy
photovoltaic system
inverter
