NDLI: A wide output voltage LLC Series Resonant Converter with hybrid mode control method

Content Provider	IEEE Xplore Digital Library
Author	Zhansen Yang Jun Wang Hao Ma Jianhua Du
Copyright Year	2015
Description	Author affiliation: Beijing Inst. of Control Eng., Beijing, China (Jianhua Du) \|\| Coll. of Electr. Eng., Zhejiang Univ., Hangzhou, China (Zhansen Yang; Jun Wang; Hao Ma)
Abstract	It's difficult for LLC-Series Resonant Converter (LLC-SRC) to achieve a wide range of output voltage for a certain input voltage. Traditional solution to this problem is employing dummy load or burst control mode. Dummy load brings down the efficiency and burst control mode gives rise to a ripple of output voltage. To solve this problem, a PFM and phase-shift hybrid control strategy for full-bridge LLC resonant converter is introduced in this paper to generate output voltage from low voltage to high voltage regardless of the load condition. The selection consideration of phase-shift frequency is introduced. And detail analysis of operating conditions for phase-shift control mode and PFM mode is presented. Based on the proposed control strategy, an experimental prototype with 100V input, 150-550V output is provided. It achieves 88%-96% efficiency in full-load condition (4.6A) with 150V-550V output voltages, and above 90% efficiency in 550V output voltage with 5% - 100% load current.
Starting Page	1
Ending Page	5
File Size	488762
Page Count	5
File Format	PDF
ISBN	9781479976553
e-ISBN	9781479976577
DOI	10.1109/IFEEC.2015.7361565
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-11-01
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Capacitors Magnetic resonance RLC circuits Switches Voltage control
Content Type	Text
Resource Type	Article

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