Practical Evaluations of a Novel Asymmetrical ZCS-PWM DC-DC Converter with High-Frequency Transformer-Link

Mishima Tomokazu, Hiraki Eiji, Nakaoka Mutsuo

doi:10.1541/ieejias.130.605

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高周波リンク非対称ＺＣＳ－ＰＷＭ制御ＤＣ－ＤＣコンバータの実証評価と検討
コウシュウハリンクヒタイショウ ZCS PWM セイギョ DC DC コンバータノジッショウヒョウカトケントウ

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Abstract

This paper presents a novel Zero Current Switching (ZCS)-PWM controlled half-bridge DC-DC converter with High-Frequency (HF)-link. The newly-proposed soft switching DC-DC converter consists of a multi-resonant half-bridge HF-isolated inverter controlled by an asymmetrical PWM scheme and a center-tapped diode rectifier with a choke input filter. In order to attain the wide range of soft-commutation under the condition of constant switching frequency, the single Active Edge-Resonant Cell (AERC) that is composed of a lossless inductor and a switched resonant capacitor is originally employed for the half-bridge inverter arm, providing and assisting ZCS operations in the switching power devices. The ZCS-PWMDC-DC converter treated here is evaluated in experiments using the 800 W-55 kHz prototype. The practical effectiveness of the proposed soft switching DC-DC converter is actually demonstrated and discussed with the experimental results under open loop and closed loop configurations. Finally, the feasibility of the DC-DC converter topology is discussed from the view points of the high efficiency and high power density.

Journal

IEEJ Transactions on Industry Applications

IEEJ Transactions on Industry Applications 130 (5), 605-613, 2010

The Institute of Electrical Engineers of Japan

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