Design and simulation of boost converter with input ripple cancellation network

Ripples in the input current reduces the life span of the fuel cell and overall performance of the converter. So in order to reduce input current ripples, conventional boost converters uses large value of LC filter in the input side, leads to worse dynamic response and increase the overall weight. Open loop control has poor voltage regulation. This paper proposes a closed loop step up DC DC converter with reduced input current ripple. In the proposed system, input inductor is tapped one and ripple cancellation network(RCN) consist of a small inductor and capacitor.The current through the ripple cancellation network increases as main inductor current decreases and vice versa, thus achieving input ripple cancellation in the proposed converter. Typical application include fuel cell, electric vehicle, SMPS,renewable energy conversion system etc. A comparative study of conventional boost converter (CBC) and proposed boost converter is performed by design and simulated in PSIM.