Abstract
To solve the light-load problem of CLLC resonant converters, this paper proposes a comprehensive analysis of multiple phase-shift control based on improved fundamental harmonic approximation (FHA) method. A precise multi-harmonic approximated AC impedance model is firstly built to derive theanalytical relations between the output voltage gain and rms values of resonant currents of CLLC converters and three phase-shifts. Then, the influences of different phase-shifts on voltage gain andrms values of resonant currents are investigated with simulation verifications. Finally, an optimaldual phase-shift control achieving both effective voltage regulation and satisfying power efficiency is concluded and verified on a 18~25V/400V, 200W GaN based CLLC resonant converter prototype.
Originalsprog | Engelsk |
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Titel | 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020 |
Forlag | IEEE |
Publikationsdato | 9 nov. 2020 |
Artikelnummer | 9265763 |
ISBN (Trykt) | 978-1-7281-7161-6 |
ISBN (Elektronisk) | 978-1-7281-7160-9 |
DOI | |
Status | Udgivet - 9 nov. 2020 |
Begivenhed | 21st IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2020 - Aalborg, Danmark Varighed: 9 nov. 2020 → 12 nov. 2020 |
Konference
Konference | 21st IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2020 |
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Land/Område | Danmark |
By | Aalborg |
Periode | 09/11/2020 → 12/11/2020 |
Navn | IEEE Workshop on Control and Modeling for Power Electronics (COMPEL) |
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ISSN | 1093-5142 |
Bibliografisk note
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