A Sensitivity-Improved PFM LLC Resonant Full-Bridge DC-DC Converter With LC Antiresonant Circuitry
書誌事項
- タイトル別名
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- A Sensitivity-Improved PFM LLC Resonant Full-Bridge DC-DC Converter with LC Anti-Resonant Circuitry
抄録
An LLC resonant circuit-based full-bridge dc-dc converter with an LC anti-resonant tank for improving the performance of pulse-frequency-modulation (PFM) is proposed in this paper. The proposed resonant dc-dc converter, named as LLC-LC converter can extend a voltage regulation area below the unity gain with a smaller frequency variation of PFM by the effect of the anti-resonant tank. This advantageous property contributes for protecting over-current in the case of the short-circuit load condition as well as the start-up interval in the designed band of switching frequency. The circuit topology and operating principle of the proposed converter is described, after which the design procedure of the operating frequency and circuit parameters is presented. The performances on the soft switching and the steady-state PFM characteristics of the LLC-LC converter are evaluated under the open-loop control in experiment of a 2.5kW prototype, and its actual efficiency is compared with a LLC converter prototype. For revealing the effectiveness of the LLC-LC resonant circuitry, voltages and currents of the series and anti-resonant tanks are analyzed respectively with state-plane trajectories based on calculation and experiment, whereby the power and energy of each resonant tank are demonstrated. Finally, the feasibility of the proposed converter is evaluated from the practical point of view.
収録刊行物
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- IEEE Transactions on Power Electronics
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IEEE Transactions on Power Electronics 32 (1), 310-324, 2017-01
Institute of Electrical and Electronics Engineers (IEEE)
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キーワード
詳細情報 詳細情報について
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- CRID
- 1050294045370524032
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- NII論文ID
- 120006456953
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- ISSN
- 19410107
- 08858993
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- HANDLE
- 20.500.14094/90004790
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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- IRDB
- CiNii Articles
