Details

Autor(en) / Beteiligte

• Hongliang Wang
• Yang Chen
• Yan-Fei Liu
• Afsharian, Jahangir
• Zhihua Yang

Titel

A Passive Current Sharing Method With Common Inductor Multiphase LLC Resonant Converter

Ist Teil von

• IEEE transactions on power electronics, 2017-09, Vol.32 (9), p.6994-7010

Ort / Verlag

New York: IEEE

Erscheinungsjahr

2017

Quelle

IEEE Electronic Library (IEL)

Beschreibungen/Notizen

• In this paper, a new common inductor current sharing method is proposed for a multiphase LLC resonant converter for high-power applications. Automatic current sharing is achieved by using a common resonant inductor connecting the resonant inductors in each LLC phase in parallel. The current sharing performance of the proposed method is evaluated under first harmonic approximation (FHA) assumption. The proposed method can automatically share the primary resonant current and the load current for all phases without any additional circuit and control strategy. A 600-W two-phase LLC converter prototype based on the proposed method is built to verify the feasibility. Excellent current sharing performance (less than 0.5% current sharing error at full load) has been achieved.