A Simple ZVT Auxiliary Circuit for Totem-Pole Bridgeless PFC Rectifier

Yu, Ziwei; Xia, Yinglai; Ayyanar, Rajapandian

doi:10.1109/tia.2019.2893268

A Simple ZVT Auxiliary Circuit for Totem-Pole Bridgeless PFC Rectifier

Journal Article · Tue Jan 15 23:00:00 EST 2019 · IEEE Transactions on Industry Applications

DOI:https://doi.org/10.1109/tia.2019.2893268· OSTI ID:2446697

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Arizona State University, Tempe, AZ (United States); PowerAmerica/NC State University
Texas Instrument, Dallas, TX (United States)
Arizona State University, Tempe, AZ (United States)

The utilization of wide band gap devices has enabled high frequency operation of totem pole bridgeless PFC rectifier. However, most of the designs reported in the literature with frequency higher than 100 kHz operate under discontinuous conduction mode or critical mode to reduce the switching loss. This paper proposes a zero-voltage-transition (ZVT) technique for totem-pole PFC rectifier under continuous conduction mode operation which enables efficient operation at switching frequencies well above 100 kHz. A simple auxiliary circuit consisting of a small auxiliary inductor and two active switches is placed in parallel with the main input filter inductor to achieve zero-voltage-switching of the main switches. The auxiliary switches operate with zero-current-switching (ZCS) and conduct current as short resonant pulses only during the critical turn-on transition which results in very low losses in the auxiliary circuit. The timing of the auxiliary switches is adaptively controlled with respect to the grid voltage angle for optimized overall efficiency. As a result, the effectiveness of the proposed ZVT scheme has been validated through experiments based on a 2.4 kW 400 kHz hardware prototype with 98.35% peak efficiency.

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:: 2446697

Alternate ID(s):: OSTI ID: 1613351

Journal Information:: IEEE Transactions on Industry Applications, Journal Name: IEEE Transactions on Industry Applications Journal Issue: 3 Vol. 55; ISSN 0093-9994

Publisher:: IEEECopyright Statement

Country of Publication:: United States

Language:: English

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42 ENGINEERING
Bridgeless PFC rectifier
soft-switching
totem-pole PFC
zero-voltage-switching (ZVS)
zero-voltage-transition (ZVT)

A Simple ZVT Auxiliary Circuit for Totem-Pole Bridgeless PFC Rectifier

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References (21)

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