Power, Control, and Data Processing Systems

Power, Control, and Data Processing Systems

Design and simulation of a buck – boost PFC converter with the approach of reducing the THD of input current

Document Type : Original Research

Author
Department of power engineering, Faculty of electrical and robotics engineering, Shahrood university of technology, Shahrood, Iran
10.30511/pcdp.2025.2073352.1049
Abstract
In this article it is tried to design a PFC (Power Factor Correction) circuit on the base of Buck – Boost converter in order to increase the power quality transmission of the input voltage source. The first step of this circuit’s processing is to rectify the AC input voltage to a DC voltage but due to the use of diodes (in the H – bridge structure; which conduct the current just in a short time of each period the input current’s THD (Total harmonic distortion) will increase. The lower THD of input current, the higher input power factor of the PFC converter as a result it is tried to increase the input power factor of the PFC converter. The output of the power factor correction process is a huge DC (Direct current) voltage which is regulated in the range of 400 volts with the help of control circuit. In this article the Boost mode of the Buck – Boost converter is considered.
Keywords
Subjects

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Volume 3, Issue 2
Spring 2026

  • Receive Date 04 October 2025
  • Revise Date 13 November 2025
  • Accept Date 14 November 2025
  • First Publish Date 14 November 2025
  • Publish Date 01 June 2026