Modified Dual PWM-Controlled Boost Converter with Reduced Input Current Ripple for High Gain Applications

High gain boost converters are used widely in automobile industry in powertrain unit to transfer energy from batteries to various modules of system. Improvements in the areas of gain and input current ripple will improve the converter performance. This paper proposes a modified control logic for higher output voltage with reducing input current ripple. Boosting the converter gain is achieved through dual PWM technique and ripple reduction is obtained by properly selecting the frequencies of high and low frequency carrier waves. To confirm the effectiveness of the proposed design, simulation studies and the implementation of a 90 V, 90 W hardware prototype circuit have been carried out. The proposed scheme yields satisfactory performance in ripple reduction.