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低输入电流纹波高增益DC-DC变换器是光伏、燃料电池等低电压输入分布式发电系统的重要组成部分，对推广应用可再生能源发电起着重要作用。该文基于二次型升压变换器和倍压单元，提出一种双耦合电感零输入电流纹波高增益 QBC-VMU 集成变换器。通过二次型升压变换器输入电感和储能电感的耦合，合理地配置匝比和耦合系数，可近似实现输入电流的零纹波。倍压电路中的储能电感由一对耦合电感代替，可获取高升压增益，且避免出现极限占空比。由箝位二极管和储能电容组成的吸收电路，可降低由漏感造成的开关管两端的电压尖峰；倍压电路中的续流二极管和储能电容组成的漏感能量回收电路，可降低能量损耗，提高变换器效率。该文在分析变换器工作原理及切换模式的基础上，搭建一台输入/输出电压为18V/200V的实验样机，样机测试结果验证了理论分析的正确性。“,”High gain DC-DC converters with low input current ripple are key components of photovoltaic, fuel cells and other low voltage input distributed generation systems, and have played a decisive role in the large-scale popularization of renewable energy based power generation. A high voltage gain zero input ripple converter with two coupled inductors was proposed based on the quadratic boost converter (QBC) and voltage multiplying unit (VMU). The input current characterized with very small ripple close to zero can be achieved by suitably configuring the coupling coefficient and allocation ratio of the coupled inductors. The storage inductor of voltage-multiplying units was replaced by a pair of coupled-inductors, and hence the high voltage gain performance can be realized by properly tuning the ratio of the coupled-inductors. In addition, the extreme duty cycle can be avoided even when the converter is operated for high voltage gain output, due to the introduction of coupled-inductors. The snubber circuit consisting of clamping diodes and storage energy capacitors is capable of reducing the voltage spike of the switch tube with respective to the leakage of coupled-inductors. Additionally, the energy recovery circuit, which is composed of the continuous flow diode and the storage capacitor, can reduce the loss caused by the leakage inductor and can improve the efficiency of the converter. Experimental results sampled from a 18V/200V prototype were presented to verify the theoretical analysis of the proposed converter.