Autotuning digital controller for current sensorless power factor corrector stage in continuous conduction mode
Metadatos
Title:
Autotuning digital controller for current sensorless power factor corrector stage in continuous conduction mode
Author:
López-Martín, Víctor M.; Azcondo, Francisco Javier; Díaz, Francisco Javier; Castro, Ángel de
Entity:
UAM. Departamento de Tecnología Electrónica y de las Comunicaciones
Publisher:
Institute of Electrical and Electronics Engineers
Date:
2010
Citation:
10.1109/COMPEL.2010.5562400
12th Workshop on Control and Modeling for Power Electronics, COMPEL 2010, IEEE, 2010, 1 – 8.
ISSN:
1093-5142 (print); 2151-1004 (online)
ISBN:
978-1-4244-7461-5 (online); 978-1-4244-7462-2 (print)
DOI:
10.1109/COMPEL.2010.5562400
Funded by:
This work is sponsored by the Spanish Ministry of Education and Science
through the project CICYT-TEC 2008-01753
Editor's Version:
http://dx.doi.org/10.1109/COMPEL.2010.5562400
Subjects:
Autotuning digital controller; Light flickering; Nonlinear-carrier control; Power factor correction; Rebuilt current; Informática; Telecomunicaciones
Note:
Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. V. M. López, F. J. Azcondo, F. J. Díaz, and Á. de Castro, "Autotuning digital controller for current sensorless power factor corrector stage in continuous conduction mode", 2010 IEEE 12th Workshop on Control and Modeling for Power Electronics (COMPEL), Boulder (CO), 2010, pp. 1-8
Rights:
© 2010 IEEE
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.
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