Paralleling of LLC Resonant Converters

Shah, Suyash Sushilkumar; Rastogi, Sagar Kumar; Bhattacharya, Subhashish

doi:10.1109/tpel.2020.3040621

Paralleling of LLC Resonant Converters

Journal Article · Tue Nov 24 23:00:00 EST 2020 · IEEE Transactions on Power Electronics

DOI:https://doi.org/10.1109/tpel.2020.3040621· OSTI ID:2458196

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North Carolina State University, Raleigh, NC (United States); PowerAmerica/NC State University
North Carolina State University, Raleigh, NC (United States)

The LLC resonant converter is a popular, variable switching frequency DC-DC converter that may be controlled using two methods: charge and frequency control. In this paper, the application of LLC resonant converters to input-parallel, output-parallel system is studied. In this respect, the models of output-port I-V characteristics and small-signal output impedance of the charge controlled LLC converter are proposed. In addition, a mathematical framework is developed for droop-based paralleled DC-DC systems. Here, it distinctly identifies the output DC voltage and circulating current modes of stability, even in systems comprising of non-identical converters.

View Accepted Manuscript (DOE)

Research Organization:: North Carolina State University, Raleigh, NC (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

Grant/Contract Number:: EE0006521

OSTI ID:: 2458196

Journal Information:: IEEE Transactions on Power Electronics, Journal Name: IEEE Transactions on Power Electronics Journal Issue: 6 Vol. 36; ISSN 0885-8993

Publisher:: IEEECopyright Statement

Country of Publication:: United States

Language:: English

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Paralleling of LLC Resonant Converters

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