Input Voltage Sensorless Duty Compensation Control for a Three-Phase Boost PFC Converter

Ayan Mallik, Weisheng Ding, Chuan Shi, Alireza Khaligh

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

This paper proposes an input voltage sensorless control algorithm for three-phase active boost rectifiers. Using this approach, the input ac-phase voltages can be accurately estimated from the fluctuations of other measured state variables and preceding switching state information from converter dynamics. Furthermore, the proposed control strategy reduces the input current harmonics of an ac-dc three-phase boost power factor correction (PFC) converter by injecting an additional common-mode duty ratio term to the feedback controllers' outputs. This additional duty compensation term cancels the unwanted input harmonics, caused by the floating potential between ac source neutral and dc link negative, without requiring any access to the neutral point. A 6-kW (continuous power)/10-kW (peak power) three-phase boost PFC prototype using SiC-based semiconductor switching devices is designed and developed to validate the proposed control algorithm. The experimental results show that an input power factor of 0.999 with a conversion efficiency of 98.3%, total harmonic distortion as low as 4%, and a tightly regulated dc-link voltage with 1% ripple can be achieved.

Original languageEnglish (US)
Article number7738511
Pages (from-to)1527-1537
Number of pages11
JournalIEEE Transactions on Industry Applications
Volume53
Issue number2
DOIs
StatePublished - Mar 1 2017
Externally publishedYes

Keywords

  • Common-mode duty ratio
  • input voltage sensorless
  • more electric airplane (MEA)
  • power factor correction (PFC)
  • regulated transformer rectifier unit (RTRU)
  • three-phase boost rectifier
  • zero-sequence

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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