NDLI: Autotuning digital controller for current sensorless power factor corrector stage in continuous conduction mode

Content Provider	IEEE Xplore Digital Library
Author	Lopez, V.M. Azcondo, F.J. Diaz, F.J. de Castro, A.
Copyright Year	2010
Description	Author affiliation: HCTLab, Universidad Autónoma de Madrid, Madrid, Spain (de Castro, A.) \|\| Department of Electronics Technology System and, Automation Engineering, University of Cantabria, Santander, Spain (Lopez, V.M.; Azcondo, F.J.; Diaz, F.J.)
Abstract	A circuit that compensates the volt-seconds error across the inductor in current sensorless digital control for continuous conduction mode power factor correction (PFC) stage is presented. Low cost ad-hoc sigma-delta analog to digital converters (ΣΔ ADCs) are used to sample the PFC input and output voltage. Instead of being measured, the input current is estimated in a digital circuit to be used in the current loop. A nonlinear carrier control is implemented in the digital controller in order to obtain the power factor correction. Drive signal delays cause differences between the digital current and the real current, producing that volt-seconds error. The control algorithm is compensated taking into account the delays. The influence of a wrong compensation is presented. Experimental results show power factor values and harmonic content within the IEC 61000-3-2 Class C standard in different operation conditions. Furthermore, the use of this PFC stage for electronic ballasts to compensate the effect of the utility voltage fluctuation in HID lamps is also verified taking advantage of the digital device capabilities.
Starting Page	1
Ending Page	8
File Size	1301301
Page Count	8
File Format	PDF
ISBN	9781424474622
e-ISBN	9781424474639
e-ISBN	9781424474615
DOI	10.1109/COMPEL.2010.5562400
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-28
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Delay Switches High intensity discharge lamps Converters Inductors Voltage fluctuations Voltage control light flickering power factor correction Nonlinear-carrier control rebuilt current autotuning digital controller
Content Type	Text
Resource Type	Article

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