In order to effectively reduce the current ripple and improve the efficiency of the converter, a novel interleaved non-inverting buck boost DC/DC converter is proposed. The proposed structure reduces the voltage stress of the switches,the internal voltage oscillation and the I/O current ripple,and improves the efficiency of the converter by using the input/output( I/O) magnetic coupling interleaving and damping network technology. By using the state space averaging method,the steady state operation of the converter is analyzed in the continuous conduction mode,and its advantages are proved theoretically. Prototype of the power is set to 360 W,output voltage is 36 V,the simulation results and experimental results show that when the output current is 6 A, the maximum conversion efficiency reaches 96%,maximum input current ripple percentage is only 9.4%. Compared to other similar converters, the proposed converter has the advantage of higher efficiency and lower I/O current ripple.%为了有效降低电流纹波和提高转换器效率,提出一种新型交错并联同相降压升压DC/DC转换器。提出的结构通过采用输入/输出( I/O)磁耦合交错并联和阻尼网络技术,降低了开关的电压应力、内部电压振荡和I/O电流纹波,并提升了转换器的效率。采用状态空间平均法,在连续导通模式下分析了提出转换器的稳态运行,从理论上证明了其优势。样机的功率设置为360 W,输出电压为36 V,模拟结果以及实验结果显示,当输出电流为6 A时,转换效率最高达到96％,最大输入电流纹波百分比仅为9.4％,相较于其他类似转换器,提出的转换器具有效率较高和I/O电流纹波较低的优势。
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