Power factor correction without current sensor based on digital current rebuilding
Entity
UAM. Departamento de Tecnología Electrónica y de las ComunicacionesPublisher
IEEEDate
2010-06-09Citation
10.1109/TPEL.2009.2039231
IEEE Transactions on Power Electronics 25.6 (2010): 1527 - 1536
ISSN
0885-8993 (print); 1941-0107 (online)DOI
10.1109/TPEL.2009.2039231Funded by
This work has been funded by the Spanish Government with the project TEC2008-01753 entitled: “Digital power processing for the control of gaseous discharges”.Editor's Version
http://dx.doi.org/10.1109/TPEL.2009.2039231Subjects
Power factor correction; Current mode control; Digital control; Sensorless; One-cycle control; Input current estimation; TelecomunicacionesNote
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. F. J. Azcondo, Á. de Castro, V. M. López, Ó. García, "Power Factor Correction Without Current Sensor Based on Digital Current Rebuilding", IEEE Transactions on Power Electronics, vol. 25, no. 6, pp. 1527 - 1536, June 2010.Rights
© 2010 IEEEAbstract
A new digital control technique for power factor (PF) correction is presented. The main novelty of the method is that there is no current sensor. Instead, the input current is digitally rebuilt, using the estimated input current in the current loop. The circuit measures the input and output voltage by means of low cost ad hoc analog-to-digital converters (ADCs). Taking advantage of the slow dynamic behavior of these voltages, almost completely digital ADCs have been designed, leaving only a comparator and an RC filter in the analog part. Avoiding measuring current can provide a significant advantage compared to analog controllers and this also helps to reduce the total cost. The ultimate objective is to obtain a low-cost digital controller that can be easily integrated as an intellectual property (IP) block into a field-programmable gate array, or an application-specific integrated circuit. The experimental results show a reasonably high PF, despite not measuring the input current, and therefore the feasibility of the method.
Files in this item
Google Scholar:Azcondo, Francisco Javier
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Castro, Ángel de
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López, Víctor Manuel
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Muñoz García, Óscar
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