Single-Stage Flyback AC-DC Converter with Primary-Side Controlled DCM/CCM Operations

Wei Jiun Wu, Tsorng Juu Liang, Kai Hui Chen, Wei Jing Tseng

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

Abstract

In this paper, primary side regulation (PSR) technology for single-stage flyback converter in discontinuous conduction mode (DCM) and continuous conduction mode (CCM) operations is presented. The output voltage and current are estimated by sensing the auxiliary winding voltage and the power switch current without the secondary-side output feedback circuits. In this paper, the algorithm used for PSR allows the magnetizing current to be operated in DCM and CCM. Therefore, the PSR flyback converter is suitable for wide input voltage range and wide output power range applications. Finally, the control algorithm is implemented with the digital control to achieve high power factor with 90-264 Vrms universal input voltage and 24 V/96 W output voltage and rated output power. Experimental results show the power factor is higher than 0.93 and the output voltage control accuracy and output current accuracy are within 6.25% and 8%, respectively under the universal input voltage range conditions. The highest system efficiency is 88.3%.

Original languageEnglish
Title of host publication2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages430-437
Number of pages8
ISBN (Electronic)9781728153018
DOIs
Publication statusPublished - 2020 Nov 29
Event9th IEEE International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia - Nanjing, China
Duration: 2020 Nov 292020 Dec 2

Publication series

Name2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia

Conference

Conference9th IEEE International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia
Country/TerritoryChina
CityNanjing
Period20-11-2920-12-02

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Control and Optimization

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