MODELING AND INVESTIGATION OF FERROFLUID MICRO TRANSFORMER AND INDUSTRIAL TYPE TRANSFORMER

Abstract

In this study, the results of experimental studies of two practical applications of magnetic fluid are presented. In the first example, the core of the air core small size transformer, whose body is made of non-magnetic material, was filled with magnetic fluid and the output voltage characteristics of different frequencies were investigated. In the second model, the use of magnetic fluids in order to weaken the negative effects of the small cracks and crevices formed on the cores side arms of the industrial transformers to the output characteristics of the transformers were examined. For this purpose, the channels of different types of transformers of the 220V / 12V low-voltage transformers with a 5W power rating of industrial PCB type were filled with magnetic liquid and the characteristics of the transformer were examined. In order to increase the magnetization properties of magnetic fluids, pure iron powder (Fe₃O₄) was added to these fluids and experimental investigations were performed. The positive results were evaluated in tables and graphs.

Keywords

• : ferrofluid,magnetic fluid,magnetic particles,microtransformers,magnetic core,high frequences

References

1. [1] S. Odenbach, Colloidal magnetic fluids : basics, development and application of ferrofluids. Springer Verlag, 2009.
2. [2] M. M. M. Elmars Blums, Andrejs Cebers, Magnetic Fluids - Elmars Blums, Andrejs Cebers, M. M. Maiorov - Google Kitaplar. 1997.
3. [3] J. L. Neuringer and R. E. Rosensweig, “Ferrohydrodynamics,” Phys. Fluids, vol. 7, no. 12, p. 1927, Dec. 1964.
4. [4] B. M. Berkovskiĭ, V. F. (Vitaliĭ F. Medvedev, M. S. (Mikhail S. Krakov, and V. F. (Vitali�i F. Medvedev, Magnetic fluids : engineering applications. Oxford University Press, 1993.
5. [5] S. Odenbach, “Ferrofluids- Magnetisable Liquids and Their Application in Density Separation,” Magn. Electr. Sep., vol. 9, no. 1, pp. 1–25, 1998.
6. [6] B. M. Berkovskiĭ, V. G. Bashtovoĭ, and Unesco., Magnetic fluids and applications handbook. Begell House, Inc, 1996.
7. [7] L. Pislaru-Danescu, A. M. Morega, G. Telipan, M. Morega, J. B. Dumitru, and V. Marinescu, “Magnetic Nanofluid Applications in Electrical Engineering,” IEEE Trans. Magn., vol. 49, no. 11, pp. 5489–5497, Nov. 2013.
8. [8] S. Chaudhari, S. Patil, R. Zambare, and S. Chakraborty, “Exploration on use of ferrofluid in power transformers,” in 2012 IEEE 10th International Conference on the Properties and Applications of Dielectric Materials, 2012, pp. 1–4.

9. [9] L. Pislaru-Danescu et al., “Prototyping a Ferrofluid-Cooled Transformer,” IEEE Trans. Ind. Appl., vol. 49, no. 3, pp. 1289–1298, May 2013.
10. [10] A. M. Morega, M. Morega, and J. B. Dumitru, “MAGNETIC FIELD-FLOW INTERACTIONS IN A MINIATURE ELECTRIC POWER TRANSFORMER WITH MAGNETIC NANOFLUID CORE AND SOLENOID TYPE COILS.”
11. [11] H. Hartshorne, C. J. Backhouse, and W. E. Lee, “Ferrofluid-based microchip pump and valve,” Sensors Actuators B Chem., vol. 99, no. 2–3, pp. 592–600, May 2004.
12. [12] Y. Zou, K. Liu, Z. Shen, and X. Chen, “Magnetic-fluid core optical fiber,” Microfluid. Nanofluidics, vol. 10, no. 2, pp. 447–451, Feb. 2011.
13. [13] T.-H. Tsai, P.-H. Chen, D.-S. Lee, and C.-T. Yang, “Investigation of electrical and magnetic properties of ferro-nanofluid on transformers,” Nanoscale Res. Lett., vol. 6, no. 1, p. 264, Mar. 2011.
14. [14] T.-H. Tsai et al., “Applications of Ferro-Nanofluid on a Micro-Transformer,” Sensors, vol. 10, no. 9, pp. 8161–8172, Aug. 2010.
15. [15] “SIGMA-HC CO.” [Online]. Available: http://www.sigma-hc.co.jp/english/magnetic_fluid.html.
16. [16] R. E. Rosensweig, Ferrohydrodynamics - R. E. Rosensweig - Google Kitaplar. Dover, 2014.
17. [17] L. Pislaru-Danescu, A. M. Morega, G. Telipan, M. Morega, J. B. Dumitru, and V. Marinescu, “Magnetic Nanofluid Applications in Electrical Engineering,” IEEE Trans. Magn., vol. 49, no. 11, pp. 5489–5497, Nov. 2013.