A new modified quadratic boost converter with high voltage gain

[摘要] High gain step up DC-DC boost converters are considered as an important part in different renewable energy sources (RES). In this paper a modified high gain setup up DC-DC quadratic boost converter is introduced. The proposed topology not only enhance the high voltage gain but also decrease the voltage stress across the semiconductor switches as well overall converter loses. To validate the proposed method efficacy, experiment performed in laboratory where 5 VDC are given as an input and at output we attained 62.5 volts with output power of 19.5 watts. The maximum efficiency of proposed converter at input power of 20 W is 95.39% and at 3.7 W it is 83.52%. Whereas, the conventional converter efficiency at the same input power is 93.89% and 82.96% respectively.

[学科分类] 电子、光学、磁材料

[关键词] Dc-Dc converter;non isolated high gain;quadratic boost converter;voltage stress;voltage gain