TY - GEN
T1 - An interleaved LLC resonant converter operating at constant switching frequency
AU - Hu, Zhiyuan
AU - Qiu, Yajie
AU - Wang, Laili
AU - Liu, Yan Fei
PY - 2012
Y1 - 2012
N2 - The interleaving and phase shedding techniques on LLC resonant converters will increase the load capacity, reduce the output current ripple and improve the efficiency. However, conventional frequency-controlled LLCs will lose regulation in individual phases if all phases are synchronized for interleaving, causing current imbalance. Existing load-sharing solutions for multiphase LLCs cannot achieve voltage regulation, phase shedding, and expandable load capacity all at the same time. In this paper, a switch-controlled capacitor (SCC) modulated LLC converter (SCC-LLC) is presented for multiphase paralleling. It features constant switching frequency, which results in a simple structure for paralleling and the ability for phase shedding to improve light-load efficiency. In the proposed structure, a SCC unit is used in each individual LLC stage to regulate the output gain, thereby inherently solves the conflict between the interleaving and the load sharing.
AB - The interleaving and phase shedding techniques on LLC resonant converters will increase the load capacity, reduce the output current ripple and improve the efficiency. However, conventional frequency-controlled LLCs will lose regulation in individual phases if all phases are synchronized for interleaving, causing current imbalance. Existing load-sharing solutions for multiphase LLCs cannot achieve voltage regulation, phase shedding, and expandable load capacity all at the same time. In this paper, a switch-controlled capacitor (SCC) modulated LLC converter (SCC-LLC) is presented for multiphase paralleling. It features constant switching frequency, which results in a simple structure for paralleling and the ability for phase shedding to improve light-load efficiency. In the proposed structure, a SCC unit is used in each individual LLC stage to regulate the output gain, thereby inherently solves the conflict between the interleaving and the load sharing.
UR - https://www.scopus.com/pages/publications/84870953019
U2 - 10.1109/ECCE.2012.6342315
DO - 10.1109/ECCE.2012.6342315
M3 - 会议稿件
AN - SCOPUS:84870953019
SN - 9781467308014
T3 - 2012 IEEE Energy Conversion Congress and Exposition, ECCE 2012
SP - 3541
EP - 3548
BT - 2012 IEEE Energy Conversion Congress and Exposition, ECCE 2012
T2 - 4th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2012
Y2 - 15 September 2012 through 20 September 2012
ER -