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http://dx.doi.org/10.5207/JIEIE.2003.17.1.116

Input Current Ripple Improvement on Interleaved Boost Power Factor Corrector Operating in Discontinuous Current Mode  

허태원 (마산대학 컴퓨터응용전기계열)
박지호 (동명대학 기계자동화시스템계열)
노태균 (유한대학 디지털모터과)
김동완 (동명대학 전기전자계열)
박한석 (부경대학교 전기제어계측공학부)
우정인 (동아대 전기전자컴퓨터공학부)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.17, no.1, 2003 , pp. 116-123 More about this Journal
Abstract
In this paper, interleaved boost converter is applied as a pre-regulator in switched mode power supply. The pre-regulator plays a role to improve power factor. Interleaved Boost Power Factor Corrector(IBPFC) can reduce input current ripple as a single voltage control loop only without inner current loop, because input current is divided each 50% by two switching devices. Each converter cell is also operated in discontinuous current mode and inductor current of each converter is discontinuous. Total input current which is composed by each converter cell is continuous current. Thus, IBPFC is able to improve input current ripple. IBPFC operating in discontinuous current mode can be classified as six modes from switching state and be carried out state space averaging small signal modeling. A control transfer function is obtained according to the modeling. Single voltage control loop is also constructed by the control transfer function. From experimental result, improvement of power factor and input current ripple are verified.
Keywords
IBPFC; Discontiuous current mode; State space average; Ripple; Power Factor;
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