Interleaved current sensorless control for multiphase boost-type switch-mode rectifier with phase-shedding operation

Hung-Chi Chen*

*Corresponding author for this work

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

Multiphase boost-type switch-mode rectifiers (SMRs) are often used to improve the efficiency of ac-dc conversion. In particular, the light-load efficiency can be increased by turning off some phases (i.e., phase-shedding operation). To keep the number of feedback signals fixed regardless of the topology phase number N, the interleaved current sensorless control (ICSC) with consideration of the phase-shedding operation is proposed in this paper. In ICSC, no current sensing is needed, and only input and output voltages are sensed. To demonstrate the proposed ICSC, a two-phase boost-type SMR is established for test, and the proposed ICSC is implemented in a field-programmable-gate-array-based system. The provided simulation and experimental results show good performance of the proposed ICSC.

Original languageEnglish
Article number6494618
Pages (from-to)766-775
Number of pages10
JournalIEEE Transactions on Industrial Electronics
Volume61
Issue number2
DOIs
StatePublished - 1 Jan 2014

Keywords

  • Interleaved control
  • phase-shedding operation

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