Single-Switch Parallel Power Factor Correction AC–DC Converters With Inherent Load Current Feedback
- 12 July 2004
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Electronics
- Vol. 19 (4) , 928-936
- https://doi.org/10.1109/tpel.2004.830087
Abstract
Single-stage power factor correction (PFC) ac-dc converters usually suffer from high bulk capacitor voltage stress and extra switch current stress. Bulk capacitor voltage feedback with a coupled-winding structure can dramatically alleviate the stresses. However, this type of feedback is indirect because the feedback only occurs after the bulk capacitor voltage increases. This paper presents a family of single-switch single-stage parallel PFC ac-dc converters with inherent load current feedback. Unlike the bulk capacitor voltage feedback, which utilizes the decreased duty ratio and the increased bulk capacitor voltage to reduce the input power at light load, the load current feedback can reduce the input power automatically at light load while maintaining an unchanged duty ratio. The proposed converters combine the advantages of simple topology, low bulk capacitor voltage, and no extra current stress across the switch. The concept is verified using an ac-dc converter with universal-line input and 5-V, 60-W output power. The input current harmonics meet IEC1000-3-2 Class D requirements.Keywords
This publication has 19 references indexed in Scilit:
- An economical single-phase passive power-factor-corrected rectifier: topology, operation, extensions, and design for compliancePublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- The suppressing harmonic currents, MS (magnetic-switch) power supplyPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Simple AC/DC converters to meet IEC 1000-3-2Published by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- An efficient single-switch voltage regulatorPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Voltage and current stress reduction in single-stage power factor correction AC/DC converters with bulk capacitor voltage feedbackIEEE Transactions on Power Electronics, 2002
- A topology survey of single-stage power factor corrector with a boost type input-current-shaperIEEE Transactions on Power Electronics, 2001
- Single-stage input-current-shaping technique with voltage-doubler-rectifier front endIEEE Transactions on Power Electronics, 2001
- Single-stage single-switch power-factor-correction AC/DC converters with DC-bus voltage feedback for universal line applicationsIEEE Transactions on Power Electronics, 1998
- A high-efficiency single-stage single-switch high-power-factor AC/DC converter with universal inputIEEE Transactions on Power Electronics, 1998
- Design considerations for single-stage isolated power-factor-corrected power supplies with fast regulation of the output voltagePublished by Institute of Electrical and Electronics Engineers (IEEE) ,1995