Current sensorless control for single-phase boost-type SMR

Hung-Chi Chen*, Chih Kai Huang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

In this paper, the single-loop current sensorless controls (SLCSC) for single-phase boost-type switching-mode-rectifiers (SMRs) are developed and digitally implemented in DSP-based system. Compared to the conventional multi-loop control with one inner current loop and one outer voltage loop, there is only one voltage loop in the proposed SLCSCs where its output is used to shift the nominal duty ratio pattern generated from the sensed input and output voltage. Because of no current loop, the efforts of sampling and tracking inductor current are unnecessary. It implies that the proposed SLCSCs are simple and very adaptable to the implementation with mixed-signal integrated circuits. It is also noted that the proposed SLCSCs are operated at continuous-current- mode (CCM). In this paper, first, the effects of shifting nominal duty ratio pattern on the input current waveform are analyzed and modeled with considering the inductor resistance and conduction voltages. It shows that the aligned current waveform can be inherently generated by the nominal duty ratio pattern and the current amplitude is roughly proportional to the shifting phase of nominal duty ratio pattern. Then, a voltage controller is included to regulate the dc output voltage by tuning this controllable phase. Finally, some simulated and experimental results have been given to demonstrate the performances of the proposed SLCSCs.

Original languageEnglish
Title of host publication2008 23rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC
Pages1221-1226
Number of pages6
DOIs
StatePublished - 18 Aug 2008
Event2008 23rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC - Austin, TX, United States
Duration: 24 Feb 200828 Feb 2008

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

Conference

Conference2008 23rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC
CountryUnited States
CityAustin, TX
Period24/02/0828/02/08

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