直流母线式光伏发电系统前级变换器的研究  

Research on photovoltaic power generation system DC bus pre-converter

作　　者：闫佳乐 张振国[1] 李纪文[1] 张昊[1] 易勇华 张青青[1] 

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《信息技术》2015年第4期110-113,共4页Information Technology

摘　　要：直流母线式光伏发电系统前级DC/DC变换器不仅可以将光伏组件的输出电压与直流母线电压相匹配,还可以实现对光伏组件的最大功率跟踪控制。文中为分析的方便,忽略直流母线式光伏发电系统储能部分的充放电,重点对与光伏组件相连接的前级变换器进行研究。针对光伏发电系统对拓扑的要求,提出将采用不对称控制的电流馈入型半桥变换器应用到光伏发电系统中。控制型软开关技术不需要增加辅助开关就可以实现变换器的软开关,在减小变换器的体积和降低变换器成本的基础上,提高了光伏发电系统的整体效率。DC bus photovoltaic power generation system front stage DC / DC converter can not only output voltage of the photovoltaic module DC bus voltage to match,you can also charge and discharge energy storage systems,focusing on the PV modules are connected with pre-converter research. Topology for photovoltaic power generation system requirements,this paper proposed to control the use of asymmetrical half-bridge converter current fed into the model applied to the photovoltaic power generation system.Control type soft switching technology without adding auxiliary switch can achieve soft switching converter,on the basis of reduced volume and lower the cost of the converter to improve the overall efficiency of the PV system.

关 键 词：直流母线式光伏发电系统 前级变换器 电流馈入型变换器 控制型软开关 

分 类 号：TM464[电气工程—电器]