Development of a ZVT-PWM buck cascaded buck-boost PFC converter of 2kW with the widest range of input voltage

Taeho Bang, Jung Wook Park

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)


This paper describes the development of a new buck cascaded buck-boost power factor correction (PFC) converter of 2 kW with a soft-switching technique. For its wide range of input voltage, it operates in both buck and boost modes. The parameters are properly selected to endure voltage and current stress in all operating ranges. In addition, the electromagnetic interference (EMI) filter is used to reduce the EMI noise and guarantee continuous input current in buck operation. Moreover, the zero-voltage-transient pulse-width-modulation (ZVT-PWM) method is applied to improve the overall efficiency of the converter. The performance of the proposed PFC converter with the widest range of input voltage is evaluated by the hardware experimental test including harmonics analysis based on the International Electrotechnical Commission standard in all operating ranges. Also, the variations of power factor are theoretically analyzed in both buck and boost modes to determine the widest input range of the proposed PFC converter of 2 kW with an EMI filter. These are strongly required to commercialize it in practice. Finally, the efficiency of proposed PFC converter is compared with that of a conventional buck cascaded buck-boost PFC converter under various conditions.

Original languageEnglish
Article number8010311
Pages (from-to)2090-2099
Number of pages10
JournalIEEE Transactions on Industrial Electronics
Issue number3
Publication statusPublished - 2018 Mar

Bibliographical note

Funding Information:
Manuscript received December 19, 2016; revised March 8, 2017, April 17, 2017, and June 20, 2017; accepted July 10, 2017. Date of publication August 14, 2017; date of current version December 15, 2017. This work was supported in part by the National Research Foundation of Korea funded by the Korea Government under Grant 2016R1E1A1A02920095 and in part by the Power Generation & Electricity Delivery Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea under Grant 20171220100330. (Corresponding author: Jung-Wook Park.) The authors are with the School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, South Korea (e-mail:;

Publisher Copyright:
© 1982-2012 IEEE.

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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