With the gradual reduction of the cost of photovoltaic power generation and the continuous increase of installed capacity,the problem of its grid connection has also attracted more and more attention.In order to meet the demand for DC/DC converter in photovoltaic power generation grid-connected system,based on the qua-dratic boost converter and combined with the capacitor boost technology,a DC/DC converter with the characteris-tics of zero input current ripple,zero output current ripple,high-gain and low-switch tube voltage stress was pro-posed.The article analyzed the working states of the four working modes,derived the voltage gain formula and critical mode parameters,and compared them with similar converters proposed by relevant scholars in recent years.Finally,an experimental prototype was built for verification.
关键词
零输入电流纹波/零输出电流纹波/高增益/DC/DC变换器
Key words
Zero input current ripple/Zero output current ripple/High gain/DC/DC converter
维普
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