In order to improve the voltage gain and increase the efficiency of the Boost converter, A low switch voltage stress zero-voltage-transition(ZVT) Boost converter was proposed, the operation principle and property of this new converter were analyzed in detail. Since the two phase interleaved technology is adopted, the ripple of the input current was reduced and the frequency of it was doubled, the voltage stress of the active switches is half of the output voltage, and the high voltage output was realized. Through interleaved control, all the active switches and diodes of the Boost converter were turned on and off under exact or near zero voltage switching and/or zero current switching, and the efficiency of it was improved. Finally, a prototype rated 20W was built, the experimental results are given to verify the correction of the theory analysis.%针对如何更好地提高Boost变换器的电压增益以及提高其变换效率问题,提出一种低开关电压应力ZVT Boost变换器,并对其工作原理、工作过程和性能特点进行了详细分析.由于该变换器中两Boost变换单元采用交错并联技术,所以使得其输入电流纹波减小,频率加倍,有源开关的电压应力为输出电压的一半,并且实现了输出电压的高增益.通过对该变换器采用交错控制,使得其所有有源开关、二极管实现或近似实现了零电压或零电流开通和关断,进而可以增大其工作频率,提高功率处理能力.搭建一台20W实验样机,并进行了实验研究,实验结果证明了理论分析的正确性.
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