A Class-E-Based Resonant AC-DC Converter with Inherent PFC Capability

Hussein Mahdi; Ahmed Morsi Ammar; Yasser Nour; Michael A. E. Andersen

doi:10.1109/ACCESS.2021.3067800

A Class-E-Based Resonant AC-DC Converter with Inherent PFC Capability

Hussein Mahdi, Ahmed Morsi Ammar^*, Yasser Nour, Michael A. E. Andersen

^*Corresponding author for this work

University of Tromsø – The Arctic University of Norway

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

This paper investigates the use of the class-E inverter for power factor correction (PFC) applications. Analytical and state-space models are derived showing the class-E inverter’s capability of achieving inherent PFC operation with a constant duty cycle. The inherent PFC operation limits the controller responsibility to the regulation of the output voltage, which is key for resonant converters with challenging control. A converter incorporating a diode bridge, a class-E inverter, and a class-D rectifier is presented for the PFC stage in single-phase offline converters. A prototype is designed to validate the
analysis and presented design method. The prototype operates with zero-voltage switching (ZVS) across the load range and achieves up to 211W of output power at an efficiency of 88 %, with an inherent power factor of 0.99 and a total harmonic distortion (THD) of 8.8 %. Frequency modulation is used to achieve lower output power down to 25W, with a power factor of 0.95, THD of 28 %, and an efficiency of 88 %.

Original language	English
Journal	IEEE Access
Volume	9
Pages (from-to)	46664 - 46673
ISSN	2169-3536
DOIs	https://doi.org/10.1109/ACCESS.2021.3067800
Publication status	Published - 2021

Keywords

AC-DC power conversion
Class-E inverter
Power factor correction
Resonant power conversion
Zero-voltage switching

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10.1109/ACCESS.2021.3067800

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title = "A Class-E-Based Resonant AC-DC Converter with Inherent PFC Capability",

abstract = "This paper investigates the use of the class-E inverter for power factor correction (PFC) applications. Analytical and state-space models are derived showing the class-E inverter{\textquoteright}s capability of achieving inherent PFC operation with a constant duty cycle. The inherent PFC operation limits the controller responsibility to the regulation of the output voltage, which is key for resonant converters with challenging control. A converter incorporating a diode bridge, a class-E inverter, and a class-D rectifier is presented for the PFC stage in single-phase offline converters. A prototype is designed to validate theanalysis and presented design method. The prototype operates with zero-voltage switching (ZVS) across the load range and achieves up to 211W of output power at an efficiency of 88 %, with an inherent power factor of 0.99 and a total harmonic distortion (THD) of 8.8 %. Frequency modulation is used to achieve lower output power down to 25W, with a power factor of 0.95, THD of 28 %, and an efficiency of 88 %.",

keywords = "AC-DC power conversion, Class-E inverter, Power factor correction, Resonant power conversion, Zero-voltage switching",

author = "Hussein Mahdi and Ammar, {Ahmed Morsi} and Yasser Nour and Andersen, {Michael A. E.}",

year = "2021",

doi = "10.1109/ACCESS.2021.3067800",

language = "English",

volume = "9",

pages = "46664 -- 46673",

journal = "IEEE Access",

issn = "2169-3536",

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T1 - A Class-E-Based Resonant AC-DC Converter with Inherent PFC Capability

AU - Mahdi, Hussein

AU - Ammar, Ahmed Morsi

AU - Nour, Yasser

AU - Andersen, Michael A. E.

PY - 2021

Y1 - 2021

N2 - This paper investigates the use of the class-E inverter for power factor correction (PFC) applications. Analytical and state-space models are derived showing the class-E inverter’s capability of achieving inherent PFC operation with a constant duty cycle. The inherent PFC operation limits the controller responsibility to the regulation of the output voltage, which is key for resonant converters with challenging control. A converter incorporating a diode bridge, a class-E inverter, and a class-D rectifier is presented for the PFC stage in single-phase offline converters. A prototype is designed to validate theanalysis and presented design method. The prototype operates with zero-voltage switching (ZVS) across the load range and achieves up to 211W of output power at an efficiency of 88 %, with an inherent power factor of 0.99 and a total harmonic distortion (THD) of 8.8 %. Frequency modulation is used to achieve lower output power down to 25W, with a power factor of 0.95, THD of 28 %, and an efficiency of 88 %.

AB - This paper investigates the use of the class-E inverter for power factor correction (PFC) applications. Analytical and state-space models are derived showing the class-E inverter’s capability of achieving inherent PFC operation with a constant duty cycle. The inherent PFC operation limits the controller responsibility to the regulation of the output voltage, which is key for resonant converters with challenging control. A converter incorporating a diode bridge, a class-E inverter, and a class-D rectifier is presented for the PFC stage in single-phase offline converters. A prototype is designed to validate theanalysis and presented design method. The prototype operates with zero-voltage switching (ZVS) across the load range and achieves up to 211W of output power at an efficiency of 88 %, with an inherent power factor of 0.99 and a total harmonic distortion (THD) of 8.8 %. Frequency modulation is used to achieve lower output power down to 25W, with a power factor of 0.95, THD of 28 %, and an efficiency of 88 %.

KW - AC-DC power conversion

KW - Class-E inverter

KW - Power factor correction

KW - Resonant power conversion

KW - Zero-voltage switching

U2 - 10.1109/ACCESS.2021.3067800

DO - 10.1109/ACCESS.2021.3067800

M3 - Journal article

SN - 2169-3536

VL - 9

SP - 46664

EP - 46673

JO - IEEE Access

JF - IEEE Access

ER -

A Class-E-Based Resonant AC-DC Converter with Inherent PFC Capability

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