Analysis and Design of a Resonant Power Converter with Wide Input Voltage Range for AC/DC Applications

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Abstract

Resonant converter topologies have the ability to eliminate switching losses through zero-voltage switching, making them well-suited for switching operation in the MHz frequency range. However, these types of converters are traditionally very sensitive to changes in input voltage and power level, making them unsuitable as power factor correcting AC-DC converters. This paper present a throughout analysis of the operation of a class DE converter in order to derive a set of conditions, under which it can achieve constant input impedance over a wide input voltage range (60-325 V DC) with constant output voltage (450 V DC) and thus be operated as a PFC converter, while maintaining zero voltage switching across the full range. The operation is experimentally verified under DC-DC operation for different power levels at a series of input voltages within the specified range. The implemented prototype achieves conversion efficiencies of up to 94 % and handles up to 105 W of power at switching frequencies of 2 MHz and above, while achieving constant input impedance over the full input voltage range, enabling its use as a power factor correcting converter.
Original languageEnglish
JournalI E E E Journal of Emerging and Selected Topics in Power Electronics
Number of pages11
ISSN2168-6777
DOIs
Publication statusAccepted/In press - 2020

Keywords

  • AC-DC power conversion
  • Power factor correction
  • Resonant converters
  • Zero voltage switching
  • Wide-bandgap semiconductors

Cite this

@article{5d75a0151ab646e68d51c0d37c5704a8,
title = "Analysis and Design of a Resonant Power Converter with Wide Input Voltage Range for AC/DC Applications",
abstract = "Resonant converter topologies have the ability to eliminate switching losses through zero-voltage switching, making them well-suited for switching operation in the MHz frequency range. However, these types of converters are traditionally very sensitive to changes in input voltage and power level, making them unsuitable as power factor correcting AC-DC converters. This paper present a throughout analysis of the operation of a class DE converter in order to derive a set of conditions, under which it can achieve constant input impedance over a wide input voltage range (60-325 V DC) with constant output voltage (450 V DC) and thus be operated as a PFC converter, while maintaining zero voltage switching across the full range. The operation is experimentally verified under DC-DC operation for different power levels at a series of input voltages within the specified range. The implemented prototype achieves conversion efficiencies of up to 94 {\%} and handles up to 105 W of power at switching frequencies of 2 MHz and above, while achieving constant input impedance over the full input voltage range, enabling its use as a power factor correcting converter.",
keywords = "AC-DC power conversion, Power factor correction, Resonant converters, Zero voltage switching, Wide-bandgap semiconductors",
author = "Spliid, {Frederik Monrad} and Ammar, {Ahmed Morsi} and Arnold Knott",
year = "2020",
doi = "10.1109/JESTPE.2019.2963266",
language = "English",
journal = "I E E E Journal of Emerging and Selected Topics in Power Electronics",
issn = "2168-6777",
publisher = "Institute of Electrical and Electronics Engineers",

}

TY - JOUR

T1 - Analysis and Design of a Resonant Power Converter with Wide Input Voltage Range for AC/DC Applications

AU - Spliid, Frederik Monrad

AU - Ammar, Ahmed Morsi

AU - Knott, Arnold

PY - 2020

Y1 - 2020

N2 - Resonant converter topologies have the ability to eliminate switching losses through zero-voltage switching, making them well-suited for switching operation in the MHz frequency range. However, these types of converters are traditionally very sensitive to changes in input voltage and power level, making them unsuitable as power factor correcting AC-DC converters. This paper present a throughout analysis of the operation of a class DE converter in order to derive a set of conditions, under which it can achieve constant input impedance over a wide input voltage range (60-325 V DC) with constant output voltage (450 V DC) and thus be operated as a PFC converter, while maintaining zero voltage switching across the full range. The operation is experimentally verified under DC-DC operation for different power levels at a series of input voltages within the specified range. The implemented prototype achieves conversion efficiencies of up to 94 % and handles up to 105 W of power at switching frequencies of 2 MHz and above, while achieving constant input impedance over the full input voltage range, enabling its use as a power factor correcting converter.

AB - Resonant converter topologies have the ability to eliminate switching losses through zero-voltage switching, making them well-suited for switching operation in the MHz frequency range. However, these types of converters are traditionally very sensitive to changes in input voltage and power level, making them unsuitable as power factor correcting AC-DC converters. This paper present a throughout analysis of the operation of a class DE converter in order to derive a set of conditions, under which it can achieve constant input impedance over a wide input voltage range (60-325 V DC) with constant output voltage (450 V DC) and thus be operated as a PFC converter, while maintaining zero voltage switching across the full range. The operation is experimentally verified under DC-DC operation for different power levels at a series of input voltages within the specified range. The implemented prototype achieves conversion efficiencies of up to 94 % and handles up to 105 W of power at switching frequencies of 2 MHz and above, while achieving constant input impedance over the full input voltage range, enabling its use as a power factor correcting converter.

KW - AC-DC power conversion

KW - Power factor correction

KW - Resonant converters

KW - Zero voltage switching

KW - Wide-bandgap semiconductors

U2 - 10.1109/JESTPE.2019.2963266

DO - 10.1109/JESTPE.2019.2963266

M3 - Journal article

JO - I E E E Journal of Emerging and Selected Topics in Power Electronics

JF - I E E E Journal of Emerging and Selected Topics in Power Electronics

SN - 2168-6777

ER -