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中文摘要：
在此提出一种基于耦合电感的准Z源高增益变换器。利用Z源网络的直通状态实现变换器的升压特性．同时通过调节耦合电感变比，无需极限占空比即可实现变换器的高升压增益特性。相比于传统的z源变换器，该变换器开关管电压应力减小，可选取低电压等级、低导通电阻的MOSFET以减小导通损耗。提高变换器效率；漏感能量通过二极管放电到电容，有效利用了漏感能量，不会造成开关的电压尖峰，无需额外的电路吸收网络；此外，该变换器的输入电流连续，适用于新能源发电应用场合。在此详细分析了变换器工作于电感电流连续模式（CCM）的工作原理和直流稳态特性，给出了电路参数设计步骤及变换器功率损耗分析。最后，搭建了实验平台验证了理论分析的正确性。
英文摘要：
A high voltage gain quasi Z-source based DC/DC converter with coupled-inductor is proposed.High voltage gain is obtained through shoot-through state of Z-source network and regulation of the free variable of coupled- inductor ratio without extreme duty ratio.The proposed converter has lower voltage stress comparing to conventional Z- source DC/DC converter,thus low voltage MOSFETs with small RDC（on） can be selected to reduce the conduction loss and improve converter effficiency.The leakage inductance energy is effectively utilized when discharging to capacitor through diode,without causing voltage spike on MOSFET.Absorb circuit is not required.The proposed converter has advantages of continuous input current, and can be applied to new energy applications.A detailed analysis of operating principles and the steady state characteristics in continuous conduction mode（CCM） is presented, along with circuit de- sign procedure and theoretical power analysis.Experimental platform is built to verify the correctness of the analysis.
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