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.

Anahtar Kelimeler:

Current transformer, magnetizing current, linear model, self-oscillating drive

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

Keywords:

Current transformer, magnetizing current, linear model, self-oscillating drive,

PDF

___

K.L. Williams, “Fundamentals of current transformer”, Electrical Electronics Insulation Conference, pp. 23–25, 19 H. Kifune, Y. Hatanaka, “Resonant frequency tracking control by using one CT for high frequency inverter”, EPE 13th European Conference on Power Electronics and Applications, pp. 1–7, 2009.
G.S.S. Chau, S. Ziegler, H.H.C. Iu, H. Daniyal, “Experimental verification of the linear current transformer model”, Australasian Universities Power Engineering Conference, pp. 1–6, 2008.
A.R.A.M. Makky, H. Abo-Zied, F.N. Abdelbar, P. Mutschler, “Design of the instrument current transformer for high frequency high power applications”, 12th International Middle-East Power System Conference, pp. 230–233, 200 A.R. Seidel, F.E. Bisogno, H. Pinheiro, R.N. do Prado, “Self-oscillating dimmable electronic ballast”, IEEE Transactions on Industrial Electronics, Vol. 50, pp. 1267–1274, 2003.
C. Liu, L. Ping, W. Chuanbing, C. Hu, Z. Zhang, “Analysis of the voltage feedback self-oscillating electronic ballasts”, 40th IAS Annual Meeting. Conference Record of the Industry Applications Conference, Vol. 4, pp. 2753– 2757, 2005.
M. Ponce-Silva, R. Mateos, E. Flores, D. Balderrama, A. Claudio, “Driver for 2.5 MHz self-oscillating electronic ballast designed with descriptive function”, IEEE Power Electronics Specialists Conference, pp. 2857–2860, 2008. N. Kondrath, M.K. Kzimierczuk, “Bandwidth of current transformers”, IEEE Transactions on Instrumentation and Measurement, Vol. 58, pp. 2008–2016, 2009.
A.R. Seidel, F.E. Bisogno, R.N. do Prado, “A design methodology for a self-oscillating electronic ballast”, IEEE Transactions on Industry Applications, Vol. 43, pp. 1524–1533, 2007.
R. Lin, Y.F. Chen, Y.Y. Chen, “Design consideration of self-oscillating full-bridge electronic ballast for metal halide lamp at 2.65 MHz operating frequency”, IEEE Energy Conversion Congress and Exposition, pp. 1591–1597, 2010. P. Lopes, M.F. da Silva, R.A. Pinto, R.N. do Prado, A.R. Seidel, “Universal input voltage self-oscillating electronic ballast with feedforward control”, IEEE Industry Applications Society Annual Meeting, pp. 1–5, 2009.
L.R. Nerone, “A mathematical model of the class D converter for compact fluorescent ballasts”, IEEE Transactions on Power Electronics, Vol. 10, pp. 708–715, 1995.
D.C. King, “Toroidal coil winding and construction techniques”, Proceedings of the Electrical Insulation Conference and Electrical Manufacturing Expo, pp. 337–340, 2005.
Philips, TN23 / 14 / 7 Datasheet, 1999.