Effects of a current transformer's magnetizing current on the driving voltage in self-oscillating converters

Effects of a current transformer's magnetizing current on the driving voltage in self-oscillating converters

Magnetizing inductance is one of the parameters that affect the phase and amplitude error of the output current of current transformers (CTs). In this study, the linear circuit model of a CT is developed to be used for driving purposes in power electronics applications. A simulation of the CT and its linear model is achieved. In the model circuit, the effect of the magnetizing inductance on the driving voltage can be examined. The equivalent circuit simulation results and the linear model simulation results along with the calculated results show agreement with each other. These results are compared with experimental results.

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  • [1]K.L. Williams, Fundamentals of current transformer", Electrical Electronics Insulation Conference, pp. 23{25,1995.[2]H. Kifune, Y. Hatanaka, Resonant frequency tracking control by using one CT for high frequency inverter", EPE13th European Conference on Power Electronics and Applications, pp. 1{7, 2009.[3]G.S.S. Chau, S. Ziegler, H.H.C. Iu, H. Daniyal, Experimental veri cation of the linear current transformer model",Australasian Universities Power Engineering Conference, pp. 1{6, 2008. [4]A.R.A.M. Makky, H. Abo-Zied, F.N. Abdelbar, P. Mutschler, Design of the instrument current transformer forhigh frequency high power applications", 12th International Middle-East Power System Conference, pp. 230{233,2008.[5]A.R. Seidel, F.E. Bisogno, H. Pinheiro, R.N. do Prado, Self-oscillating dimmable electronic ballast", IEEETransactions on Industrial Electronics, Vol. 50, pp. 1267{1274, 2003.[6]C. Liu, L. Ping, W. Chuanbing, C. Hu, Z. Zhang, Analysis of the voltage feedback self-oscillating electronicballasts", 40th IAS Annual Meeting. Conference Record of the Industry Applications Conference, Vol. 4, pp. 2753{2757, 2005.[7]M. Ponce-Silva, R. Mateos, E. Flores, D. Balderrama, A. Claudio, Driver for 2.5 MHz self-oscillating electronicballast designed with descriptive function", IEEE Power Electronics Specialists Conference, pp. 2857{2860, 2008.[8]N. Kondrath, M.K. Kzimierczuk, Bandwidth of current transformers", IEEE Transactions on Instrumentation andMeasurement, Vol. 58, pp. 2008{2016, 2009.[9]A.R. Seidel, F.E. Bisogno, R.N. do Prado, A design methodology for a self-oscillating electronic ballast", IEEETransactions on Industry Applications, Vol. 43, pp. 1524{1533, 2007.[10]R. Lin, Y.F. Chen, Y.Y. Chen, Design consideration of self-oscillating full-bridge electronic ballast for metal halidelamp at 2.65 MHz operating frequency", IEEE Energy Conversion Congress and Exposition, pp. 1591{1597, 2010.[11]P. Lopes, M.F. da Silva, R.A. Pinto, R.N. do Prado, A.R. Seidel, Universal input voltage self-oscillating electronicballast with feedforward control", IEEE Industry Applications Society Annual Meeting, pp. 1{5, 2009.[12]L.R. Nerone, A mathematical model of the class D converter for compact uorescent ballasts", IEEE Transactionson Power Electronics, Vol. 10, pp. 708{715, 1995.[13]D.C. King, Toroidal coil winding and construction techniques", Proceedings of the Electrical Insulation Conferenceand Electrical Manufacturing Expo, pp. 337{340, 2005.[14]Philips, TN23 / 14 / 7 Datasheet, 1999.201