High-Performance Active-Clamped Isolated SEPIC PFC Converter With SiC Devices and Lossless Diode Clamp

Wu, Deliang; Ayyanar, Rajapandian; Sondharangalla, Madhura; Meyers, Tobin

doi:10.1109/jestpe.2019.2944593

High-Performance Active-Clamped Isolated SEPIC PFC Converter With SiC Devices and Lossless Diode Clamp

Journal Article · Mon Sep 30 00:00:00 EDT 2019 · IEEE Journal of Emerging and Selected Topics in Power Electronics

DOI:https://doi.org/10.1109/jestpe.2019.2944593· OSTI ID:2446694

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Arizona State University, Tempe, AZ (United States); PowerAmerica/NC State University
Arizona State University, Tempe, AZ (United States)

An isolated active-clamped SEPIC PFC converter based on SiC devices is presented. The impact of the resonant inductance on the switch voltage stress and range of zero-voltage switching (ZVS) is analyzed. Analytical expressions for the operating points of the switches over the line cycle are derived and used to evaluate the switching loss. Resonant inductance and snubber capacitance are chosen based on the analysis to reduce the switching loss without overstress of the switches. Lossless diode clamp circuits are designed for the output diode so that the peak voltage as well as extra losses due to device parasitics induced oscillation are significantly reduced. Furthermore, the analysis is validated with a 2kW single-phase PFC rectifier module with a peak efficiency of 96.56% at 200kHz switching frequency, THD < 2% and power density of 58W/in³.

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:: 2446694

Alternate ID(s):: OSTI ID: 1799218

Journal Information:: IEEE Journal of Emerging and Selected Topics in Power Electronics, Journal Name: IEEE Journal of Emerging and Selected Topics in Power Electronics Journal Issue: 1 Vol. 8; ISSN 2168-6777

Publisher:: IEEECopyright Statement

Country of Publication:: United States

Language:: English

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Related Subjects

42 ENGINEERING
SiC device applications
active-clamped SEPIC
diode clamps
power factor correction

High-Performance Active-Clamped Isolated SEPIC PFC Converter With SiC Devices and Lossless Diode Clamp

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