Coupled Inductor Interleaved Boost Converter with LC Filter for Ripple Free Current

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This paper presents coupled inductor interleaved boost converter with LC filter for ripple free current. Based on the conventional coupled inductor interleaved boost converter, two coupled inductor and two LC filter is added to the proposed converter .So the proposed converter achieves reduced input and output current ripple. Hence the ripple ratio of input and output current is reduced. In order to verify that, a proposed converter of 12v input voltage and 24v output voltage operating at 50 khz is constructed. And simulations are verified by using MATLAB Simulink. So the ripple free proposed circuit is used for various photovoltaic applications. Keywords: Coupled inductor, Interleaved boost converter I. INTRODUCTION Nowadays, coupled inductor interleaved boost converter is used in most of the photovoltaic application, electric vehicles, power factor correction. Here input and output current ripple is a major problem in dc-dc converter. The input current ripple of the dc-dc converter is inversely proportional to input inductor current value. So the larger inductor value results in low ripple, on other increasing the inductor value the total weight of the converter gets increased. The proposed converter aims that without increasing the inductor value the ripple should be reduced. So that interleaving of the converter technique is used. By using interleaving technique the ripple is reduced but the weight of the converter is not reduced. So that the new technique called coupled inductor interleaved boost converter technique is used. Here the ripple is reduced than interleaving technique and the weight of the converter is reduced since the core is shared, and inductor was coiled in single core. However, the leakage inductanc... ... middle of paper ... ... ”IEEE Trans. Power Electron., vol. 27, no. 8, pp. 3513–3529, Aug. 2012. 3. Y. Jang and M. M. Jovanovic, “Interleaved boost converter with intrinsic voltage-doubler characteristic for universal-line PFC front end,” IEEE Trans. Power Electron., vol. 22, no. 4, pp. 1394–1401, Jul. 2007. 4. S. Park, Y. Park, S. Choi, W. Choi, and K. B. Lee, “Soft-switched Interleaved boost converters for high step-up and high-power applications,” IEEE Trans. Power Electron., vol. 26, no. 10, pp. 2906–2914, Oct. 2011. 5. R. Martinelli and C. Ashley, “Coupled inductor boost converter with input and output ripple cancellation,” in Proc. Appl. Power Electron. Conf. Expo., 1991, pp. 567–572 6. Y. Hu,Y.Xie, H. Tian, and B. Mei, “Characteristics analysis of two channel interleaved boost converter with integrated coupling inductor,” in Proc.IEEE Power Electron. Spec. Conf., Jun. 2006, pp. 1–6.

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