Investigation of Dynamic Stray Capacitance and Circuit Network Model for Planar Inductor with Nanocrystal Magnetic Core


Article Preview

It is the tendency to adopt novel soft magnetic materials in planar magnetic components to have much more attractive features. In this paper, the nanocrystal magnetic strip is used to consist of magnetic core of planar inductor. A novel network model for dynamic stray capacitances of planar inductor with matrix structure is presented. The magnetic core is taken into account to be one part of the equivalent circuit of planar inductor in high frequency, and its electric potential is considered to be suspended. To analyze the dynamic stray capacitance accurately, the 3D FEM model is adopted, and the parameters for dynamic stray capacitance of inductor windings are obtained. By equivalent circuit simulation of planar inductor, the impedance feature of planar inductor is obtained. The test results by impedance analyzer verify the dynamic capacitance network model.



Advanced Materials Research (Volumes 194-196)

Edited by:

Jianmin Zeng, Taosen Li, Shaojian Ma, Zhengyi Jiang and Daoguo Yang






J. Y. Lou et al., "Investigation of Dynamic Stray Capacitance and Circuit Network Model for Planar Inductor with Nanocrystal Magnetic Core", Advanced Materials Research, Vols. 194-196, pp. 2388-2395, 2011

Online since:

February 2011




[1] E. Laveuve, J. -P. Keradec, M. Bensoam, Electrostatic of wound components: analytical results, simulation and experimental validation of the parasitic capacitance, in Proc. Indus. Applic. Soc., Dearborn 1991, p.1469.

DOI: 10.1109/ias.1991.178054

[2] B. Cogitore, J. -P. Keradec, J. Barbaroux, The two-winding transformer: an experimental method to obtain a wide frequency range equivalent circuit, IEEE Trans. On Instrumentation and Measurement, IM 1994, vol. 43 p.364.

DOI: 10.1109/19.293449

[3] T. Duerbaum, Layer based capacitance model for Magnetic Devices, ", in Proc. the 8th European Conference on Power Electronics and Applications, EPE, 99, Paper 43 (published on CD-ROM).

[4] A. Baccigalwi, P. Daponte, D. Grimaldi, Circuit theory approach to evaluate the stray capacitances of two coupled induction[C], IEEE Instrumentation and Measurement Technology Conference, 1993, pp.549-553.

DOI: 10.1109/imtc.1993.382582

[5] Thomas Duerbaum, Georg Sauerlaender. Energy based capacitance model for magnetic devices[C], 16th Annual Applied Power Electronics Conference, California, USA, (2001).

DOI: 10.1109/apec.2001.911635

[6] A. Massarini, M.K. Kazimierczuk, and G. Grandi, Lumped parameter models for single- and multiple-layer inductors, IEEE Annual Power Electronics Specialists Conference, 1996, pp.295-301.

DOI: 10.1109/pesc.1996.548595

[7] Gabriele Grandi, Marian K. Kazimierczuk, et al. Stray capacitances of single-layer solenoid air-core inductors[J], IEEE Trans. on Industry Applications, 1999, Vol. 35, No. 5, pp.1162-1168.

DOI: 10.1109/28.793378

[8] Yamaguchi M, Matsumoto M, Ohzeki K., Arai K I, "Analysis of the inductance and the stray capacitance of the dryetched micro inductors[J], IEEE Trans. on Magnetics, 1991, Vol. (27), No. 6, pp.5274-5276.

DOI: 10.1109/20.278811

[9] Lu H Y, Zhu J G, Hui S Y R, et al. Measurement and modeling of stray capacitances in high frequency transformers, [C]. The 30th Annual IEEE Power Electronics Specialists Conference, South Carolina, U.S. A, 1999, pp.763-769.

DOI: 10.1109/pesc.1999.785596

[10] Mao Xinkui, Chen Wei. More Precise Model for Parasitic Capacitances in High-frequency Transformer, [C]. IEEE Power Electronics Specialists Conference, 2002, pp.1054-1057.

DOI: 10.1109/psec.2002.1022595

[11] Jianyong Lou, Deliang Liang, Yitong Chen. 3D simulation and analysis of static and ynamic stray capacitance for planar inductor with matrix windings based on energy, [C]. EVER2010, Monaco, (2010).

[12] Jianyong Lou1, Yitong Chen1. Novel network model for dynamic Stray capacitance analysis of planar inductor with nanocrystal magnetic core in high frequency, [C]. CEFC2010, Chicago, USA, (2010).

DOI: 10.1109/cefc.2010.5481497

[13] Jianyong Lou, Deliang Liang, Yitong Chen. Stray Capacitances with Voltage Distribution Characteristics in Planar Transformer with Matrix Structure and Magnetic Core of Iron-base Nanocrystal Material , [C]. 11th Joint MMM-Intermag Conreference. Washington DC, USA, (2010).

[14] Jianyong Lou, Jiping Wang, Yitong Chen. The research and development of novel magnetic material and magnetic core used in planar transformer, [J], Materials science forum, Vol. 650 2010, pp.115-118.

DOI: 10.4028/

[15] A. Massarini, M. K. Kazimierczuk, and G. Grandi, Lumped parameter models for single- and multiple-layer inductors, " in Proc. PESC, 96, Baveno, Italy, 1996, p.295–301.

DOI: 10.1109/pesc.1996.548595

In order to see related information, you need to Login.