High Power Factor Single-Stage Flyback AC-DC Converter with Primary-Side Controlled Adapted to DCM and CCM

Li Jie Huang, Tsorng Juu Liang, Wei Jing Tseng, Shi Quan Chen, Jia Wei Yeh, Sheng Jie Zhan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In order to achieve the low cost and more compact size, primary side-regulation technology is widely used in low power applications, output voltage can be estimated by an auxiliary winding without secondary-side feedback circuit. For single-stage flyback converter, no algorithm is suitable for both DCM and CCM. In this paper, a novel digital controlled sampling algorithm is proposed for single-stage flyback converter. This scheme uses a midpoint sampling method to estimate auxiliary voltage and current of switch in both discontinuous conduction mode (DCM) and continuous conduction mode (CCM), the control algorithm is implemented with the digital controller to achieve high power factor at 90-264 Vrms universal input voltage and output power of 96 W. Experimental results show that the power factor is higher than 0.98 and the output voltage control accuracy and output current accuracy are within 3.5% and 7.5%, the system efficiency is up to 86.7%.

Original languageEnglish
Title of host publication2019 IEEE 4th International Future Energy Electronics Conference, IFEEC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728131535
DOIs
Publication statusPublished - 2019 Nov
Event4th IEEE International Future Energy Electronics Conference, IFEEC 2019 - Singapore, Singapore
Duration: 2019 Nov 252019 Nov 28

Publication series

Name2019 IEEE 4th International Future Energy Electronics Conference, IFEEC 2019

Conference

Conference4th IEEE International Future Energy Electronics Conference, IFEEC 2019
CountrySingapore
CitySingapore
Period19-11-2519-11-28

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology

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    Huang, L. J., Liang, T. J., Tseng, W. J., Chen, S. Q., Yeh, J. W., & Zhan, S. J. (2019). High Power Factor Single-Stage Flyback AC-DC Converter with Primary-Side Controlled Adapted to DCM and CCM. In 2019 IEEE 4th International Future Energy Electronics Conference, IFEEC 2019 [9015020] (2019 IEEE 4th International Future Energy Electronics Conference, IFEEC 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IFEEC47410.2019.9015020