Advantages of using a two-switch forward in single-stage power factor corrected power supplies

Lars Petersen

doi:10.1109/INTLEC.2000.884269

Advantages of using a two-switch forward in single-stage power factor corrected power supplies

Lars Petersen

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Abstract

A single-stage power factor corrected power supply using a two-switch forward is proposed to increase efficiency. The converter is operated in the DCM (discontinues conduction mode) and it is shown that this operation mode ensures the intermediate DC-bus to be controlled only by means of circuit parameters and therefore independent of load variations. The DCM operation often has a diminishing effect on the efficiency but by use of the two-switch topology high efficiency with minimum circuit complexity can be achieved in this mode. A 500 W 70 V prototype of the two-switch boost-forward PFC power supply has been implemented. The measured efficiency is between 85% and 88.5% in the range 30 W-500 W and the measured power factor at full load is 0.95.

Original language	English
Title of host publication	Proceedings of Telecommunications Energy
Place of Publication	Phoenix, AZ
Publication date	2000
Pages	325-331
ISBN (Print)	0-7803-6407-4
DOIs	https://doi.org/10.1109/INTLEC.2000.884269
Publication status	Published - 2000
Event	Twenty-Second International Telecommunications Energy Conference - Hyatt Regency Phoenix, Phoenix, United States Duration: 10 Sept 2004 → 14 Sept 2004 Conference number: 22

Conference

Conference	Twenty-Second International Telecommunications Energy Conference
Number	22
Location	Hyatt Regency Phoenix
Country/Territory	United States
City	Phoenix
Period	10/09/2004 → 14/09/2004

Bibliographical note

Copyright: 2000 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

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@inproceedings{9884c605da214b01addf68f84018c185,

title = "Advantages of using a two-switch forward in single-stage power factor corrected power supplies",

abstract = "A single-stage power factor corrected power supply using a two-switch forward is proposed to increase efficiency. The converter is operated in the DCM (discontinues conduction mode) and it is shown that this operation mode ensures the intermediate DC-bus to be controlled only by means of circuit parameters and therefore independent of load variations. The DCM operation often has a diminishing effect on the efficiency but by use of the two-switch topology high efficiency with minimum circuit complexity can be achieved in this mode. A 500 W 70 V prototype of the two-switch boost-forward PFC power supply has been implemented. The measured efficiency is between 85% and 88.5% in the range 30 W-500 W and the measured power factor at full load is 0.95.",

author = "Lars Petersen",

note = "Copyright: 2000 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE; Twenty-Second International Telecommunications Energy Conference, INTELEC 2000 ; Conference date: 10-09-2004 Through 14-09-2004",

year = "2000",

doi = "10.1109/INTLEC.2000.884269",

language = "English",

isbn = "0-7803-6407-4",

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N2 - A single-stage power factor corrected power supply using a two-switch forward is proposed to increase efficiency. The converter is operated in the DCM (discontinues conduction mode) and it is shown that this operation mode ensures the intermediate DC-bus to be controlled only by means of circuit parameters and therefore independent of load variations. The DCM operation often has a diminishing effect on the efficiency but by use of the two-switch topology high efficiency with minimum circuit complexity can be achieved in this mode. A 500 W 70 V prototype of the two-switch boost-forward PFC power supply has been implemented. The measured efficiency is between 85% and 88.5% in the range 30 W-500 W and the measured power factor at full load is 0.95.

AB - A single-stage power factor corrected power supply using a two-switch forward is proposed to increase efficiency. The converter is operated in the DCM (discontinues conduction mode) and it is shown that this operation mode ensures the intermediate DC-bus to be controlled only by means of circuit parameters and therefore independent of load variations. The DCM operation often has a diminishing effect on the efficiency but by use of the two-switch topology high efficiency with minimum circuit complexity can be achieved in this mode. A 500 W 70 V prototype of the two-switch boost-forward PFC power supply has been implemented. The measured efficiency is between 85% and 88.5% in the range 30 W-500 W and the measured power factor at full load is 0.95.

U2 - 10.1109/INTLEC.2000.884269

DO - 10.1109/INTLEC.2000.884269

M3 - Article in proceedings

SN - 0-7803-6407-4

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BT - Proceedings of Telecommunications Energy

CY - Phoenix, AZ

T2 - Twenty-Second International Telecommunications Energy Conference

Y2 - 10 September 2004 through 14 September 2004

ER -

Advantages of using a two-switch forward in single-stage power factor corrected power supplies

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