Revista Eletrônica de Potência (Brazilian Journal of Power Electronics)

Resumo

Normas internacionais estabelecem limites para as correntes harmônicas e flutuações de tensão para aparelhos de uso eletrodoméstico. Muitas vezes os acionadores empregados na alimentação de aparelhos que se comportam como cargas resistivas, tais como lâmpadas e aquecedores, levam à violação de tais normas. Este artigo analisa o uso de pré-reguladores de fator de potência na alimentação de tais cargas. Nestas aplicações a variável de interesse é a potência média de saída. Diferentes topologias adequadas à operação como abaixadoras de tensão são estudadas, em seus diferentes modos de condução. Critérios de projeto, bem como resultados experimentais obtidos em conversores tipo "buck" e 'Cuk são apresentados.

Title: Not Registered

Abstract

International standards limits concerning current harmonics and voltage fluctuation sometimes are not satisfied by phase and on-off controllers of electric and electronic household appliances. Many of these appliances behave like a resistive load. This article analyzes the use of power factor regulators when feeding this kind of loads. In these applications, the variable to be controlled is the average output power. Suitable topologies for step-down operation are considered. The behaviors in continuous and discontinuous operation modes are analyzed. Design criteria are presented. Experimental results are reported for the buck and stepdown Cuk topologies.

[1] J. Sebastian and M. Jaureguizar: “An Overview of Power Factor Correction in Single-Phase Off-Line Power Supply Systems”, in Proc. of IECON’94, pp. 1688-1693, 1994. https://doi.org/10.1109/IECON.1994.398068
[2] J. A. Pomilio and G. Spiazzi: “High-Precision Current Source Using Low-Loss, Single-Switch, Three-Phase AC/DC Converter”. IEEE Transactions on Power Electronics, vol. 11, no. 4, pp. 561-566, July 1996. https://doi.org/10.1109/63.506121
[3] International Standard IEC 1000-3-2: Electromagnetic Compatibility (EMC) – Part 3: Limits – Section 2: Limits for harmonic current emissions (equipment input current < 16 A per phase). First Edition, 1995 - 03. [4] lnternational Standard IEC 1000-3-3: Electromagnetic Cumpatibility (EMC) - Part 3: Limits. Sectiun 3: Limitatiun vi voltage fluctuatiuns and flicker in lowvultage supply systems iur equipment with rated currenl < 16 A. First Edition 1994 - 12. [5] Z. Zhang, S. Cuk, "A High Efficiency 1.8 kW Battery Equalizer", in Proc. of IEEE APEC'93, pp. 221-227, 1993. https://doi.org/10.1109/APEC.1993.290627
[6] G. Spiazzi, L. Malesani, L. Rossetto, P. Tenti, J. A. Pomilio and C. Bocchiola, “High-Quality Rectifier for Resistive Loads”, in Proc. of International Conference on Power Electronics, Drives and Energy Systems for Industrial Growth, 1996. https://doi.org/10.1109/PEDES.1996.537302
[7] “Limits and Methods of Measurement of Radio Disturbances Characteristics vi Electrical Mvtoroperated and Thermal Appliances for Household and Similar Purposes, Electrical Tools and Electric Apparatus”. International Electrotechnical Commission – IEC, International Special Committee on Radio Interference, Reference number CISPR 14, 1993.
[8] E. Santi: “Magnetics and Control in Power Electronics”. Ph.D. Thesis, California Institute of Technology, Pasadena, USA, 1993.
[9] C. G. Bianchin: “Pré-Reguladores de Fator de Potência Alimentando Cargas Resistivas”, Dissertação de Mestrado, UNICAMP, 1997.
[10] V. Vlatkovic, D. Borojevic, F. C. Lee, “Input Filter Design for Power Factor Correction Circuits”, in Proc. of IEEE IECON’93, pp. 954-958, 1993. https://doi.org/10.1109/IECON.1993.339146