CURRENT PEAK LIMITING FOR A SERIES RESONANT DC LINK POWER CONVERTER USING A SATURABLE CORE

Y. MURAI Department of Electronics & Computer Engineering, Gifu University, 1-1 Yanagido Gifu, Gifu, 501-11, Japan

S. G. ABEYRATNE Department of Electronics & Computer Engineering, Gifu University, 1-1 Yanagido Gifu, Gifu, 501-11, Japan

T. A. LIPO Department of Electrical & Computer Engineering, University of Wisconsin-Madison, 1415 Johnson Drive, Madison, WI, 53706, USA

P. CALDEIRA Department of Electrical & Computer Engineering, University of Wisconsin-Madison, 1415 Johnson Drive, Madison, WI, 53706, USA

ABSTRACT

High frequency resonant dc link power conversion circuits often experience irregular high peak current pulses during three phase operation and the pulses rise to over twice the regular pulse amplitude giving rise to current or voltage fluctuations at the output side. This high peak current/voltage problem appears to be common to both series/parallel resonant types respectively because of duality of the systems. In this paper current peak limiting has been performed by means of a saturable core inserted in the DC link as the resonant inductance. A simplified circuit limiting peak current is proposed and the resulting performance of the system is investigated by means of digital simulation.

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CURRENT PEAK LIMITING FOR A SERIES RESONANT DC LINK POWER CONVERTER USING A SATURABLE CORE

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CURRENT PEAK LIMITING FOR A SERIES RESONANT DC LINK POWER CONVERTER USING A SATURABLE CORE

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