电工技术学报2011，Vol.26Issue(8)：57-63,7.
光伏高效软开关DC-DC变换器的数字化控制与实现
Digital Control and Implementation of Photovoltaic Soft-Switching DC-DC Converter With High-frequency Step-up Transformer Isolation
摘要
Abstract
To satisfy the need of the high input voltage in three-phase grid-connected photovoltaic（PV） inverter,overcome the shortage of power frequency isolation transformer severe material consumes.An improved boost-voltage phase-shifted full-bridge soft switching converter is presented.It has two step-up windings rectifiers in series and one step-down winding in series with a linear reactor.The former is used to increase the output voltage;the latter is used to ensure the devices soft switching in the full power scope.Firstly,its principle is analyzed with detail.Secondly,an asymmetrical digital phase-shift pulse width modulation（PWM） control scheme and the implement method are given.The last,the control software is designed,and a prototype is completed.Experimental results show that the control scheme is feasible,the converter has high efficiency.关键词
光伏发电/软开关变换器/高频升压变压器隔离/非对称移相脉宽调制Key words
Photovoltaic（PV） generator/soft-switching converter/high-frequency step-up transformer isolation/asymmetrical phase-shift PWM分类
信息技术与安全科学引用本文复制引用
杜春水,张承慧,陈阿莲,赵方德,肖维荣..光伏高效软开关DC-DC变换器的数字化控制与实现[J].电工技术学报,2011,26(8):57-63,7.基金项目
国家自然科学青年基金 （）
山东省自主创新重大科技专项计划（2006zz11）资助项目 （）
