Modeling and small-signal analysis of a switch-mode rectifier with single-loop current sensorless control

Hung-Chi Chen*, Zen How Wu, Jhen Yu Liao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

The conventional multiloop control with one inner current loop and one outer voltage loop is often applied to a single-phase boost-type switch-mode rectifier where the output of the voltage loop is a current amplitude signal. In the duty phase control (DPC) proposed recently, the output of the voltage loop is a phase signal used to generate the switching signals without current loop and sensing current. To improve the clamped current waveform of DPC, a single-loop current sensorless control (SLCSC) with some nominal parameters had also been proposed to compensate for the voltage drops across the switch, diodes, and inductor resistance. In this paper, the effect of the differences between nominal and real circuit parameters on the input current waveforms of SLCSC are addressed in detail. The results are helpful in the design of SLCSC. From the simulated and experimental results, we can find that the output voltage is well regulated by the only voltage loop and the input current harmonics are significantly improved.

Original languageEnglish
Article number5200445
Pages (from-to)75-84
Number of pages10
JournalIEEE Transactions on Power Electronics
Volume25
Issue number1
DOIs
StatePublished - 19 Feb 2010

Keywords

  • AC-DC power conversion

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