DocumentCode :
3449621
Title :
Modeling of a high resolution DCM times feedback loop for Sensorless Boost PFC stages
Author :
Lopez-Martin, V.M. ; Azcondo, Francisco J.
Author_Institution :
Dept. of Electron. Technol. Syst. & Autom. Eng., Univ. of Cantabria, Santander, Spain
fYear :
2013
fDate :
23-26 June 2013
Firstpage :
1
Lastpage :
6
Abstract :
The model of the high resolution feedback loop, used in a Sensorless PFC controller for Boost CCM PFC stages is presented is this work. The digital controller used in Boost CCM PFC stages without current sensor produces errors every switching period which are accumulated over the half line cycle, causing a high input current distortion, and consequently a reduction of the power factor. Recent works present a feedback loop that match the DCM times of the actual input current and the estimated one in the digital device. This feedback loop presents a high resolution and achieves a good power factor under universal conditions of input voltage, or wide power range. The models of the plant that obtains the real DCM time and the controller which processes the error between the estimated DCM time and the real one are presented in this work.
Keywords :
digital control; feedback; power factor correction; DCM times; digital controller; digital device; high input current distortion; high resolution feedback loop; power factor reduction; sensorless boost PFC stages; universal conditions; Bandwidth; Estimation error; Feedback loop; Reactive power; Switches; Transfer functions; Voltage control; low frequency AC model; power factor correction; rebuilt current; sensorless rectifiers; steady state model;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Control and Modeling for Power Electronics (COMPEL), 2013 IEEE 14th Workshop on
Conference_Location :
Salt Lake City, UT
ISSN :
1093-5142
Print_ISBN :
978-1-4673-4914-7
Type :
conf
DOI :
10.1109/COMPEL.2013.6626445
Filename :
6626445
Link To Document :
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