Preview

Metrologiya

Advanced search
Open Access Open Access  Restricted Access Subscription Access

Method for determining of the optimal thickness of sheets of magnetic cores of electrical machines by the wattmeter method

https://doi.org/10.32446/0132-4713.2021-3-35-47

Abstract

The problem of reducing magnetic losses (no-load losses) in the steel of the magnetic cores of electrical machines is investigated. The tasc of determining the optimal thickness of steel sheets of the magnetic circuit of an electric machine is considered. The criterion for optimality is the minimum power of magnetic losses in steel. Currently, this problem does not have an exact solution due to the fact that the exact ratio of the hysteresis and eddy current components of magnetic losses in steel is unknown. Analyzed the power of magnetic losses in modern electrical machines and devices, depending on the thickness of the sheets of electrical steel. A method is proposed for determining the optimal thickness of steel sheets of the magnetic circuit of an electric machine based on the wattmeter method. In the course of the experiment, two identical magnetic circuits were selected from steel sheets of different thicknesses, for which the losses in steel were measured at different frequencies of magnetization reversal and the optimal thickness of the sheets was calculated. The proposed formula for calculating the thickness of the sheets is valid for both isotropic and anisotropic steel. The proposed technique can be used for both transformers and electric motors and generators.

About the Author

S. M. Plotnikov
Reshetnev Siberian State University of Science and Technology; Krasnoyarsk Institute of Railway Transport
Russian Federation

Sergey M. Plotnikov, Krasnoyarsk, Russia



References

1. Moses A. J., Scripta Materialia, 2012, vol. 67, no. 6, pp. 560–565. https://doi.org/10.1016/j.scriptamat.2012.02.027

2. Bolling F., Gunther K., Bottcher A., Hammer B., Steel research, 1992, vol. 63, no. 9, pp. 408–412. https://doi.org/10.1002/srin.199201733

3. Hayakawa Y., Science and Technology of Advanced Materials, 2017, vol. 18, no. 1, pp. 480–497. https://doi.org/10.1080/14686996.2017.1341277

4. Cykin G. S., Transformatory nizkoj chastity [Low frequency transformers], Moscow, Svjaz’izdat, 1955, 424 p. (In Russ.)

5. Vol’dek A. I., Popov V. V. Jelektricheskie mashiny. Vvedenie v jelektromehaniku. Mashiny postojannogo toka i transformatory. [Electric machineries. Introduction to Electromechanics. DC machines and transformers], St. Petersburg, Piter Publ., 2008, 320 p. (In Russ.)

6. Kopylov I. P., Jelektricheskie mashiny [Electric machineries], Moscow, Elektroatomizdat Publ., 2006, 360 p. (In Russ.)

7. Katsman M. M., Jelektricheskie mashiny [Electric machineries], Moscow, Vysshaya shkola Publ., 1990, 463 p. (In Russ.)

8. Ivanov-Smolensky A. V., Jelektricheskie mashin,. tom 1 [Electric machineries, vol. 1], Moscow, MEI Publ., 2004, 656 p. (In Russ.)

9. Bogoroditskiy M. P., Pasynkov V. V., Tareev B. M., Jelektrotekhnicheskie materialy [Electrical materials], Leningrad, Energatomizdat Publ., 1985, 304 p. (In Russ.)

10. Plotnikov S. M., Kolmakov V. O., Journal of Advanced Research in Technical Science, 2020, no. 19, pp. 39–42. https://doi.org/10.26160/2474-5901-2020-19-39-42

11. Hiura A., Oda Y., Tomita K., Tanaka Y., Journal de Physique IV France, 1998, vol. 8, no. PR2, pp. 499–502. https://doi.org/10.1051/jp4:19982115

12. Bertotti G., IEEE Transactions on Magnetics, 1988, vol. 24, no.1, pp. 621–630. https://doi.org/10.1109/20.43994

13. Ionel D. M., Smith A. O., Popescu M., McGilp M. I., Miller T. J. E., Dellinger S. J., Heideman R. J., IEEE Transactions on Industry Applications, 2007, vol. 43, no. 6, pp. 1554–1564. https://doi.org/10.1109/TIA.2007.908159

14. Obshchaya elektrotekhnika: ucheb. posobie dlya vuzov [General electrical engineering, university study guide], 4th ed., ed. prof. A. T. Blazhkin, Leningrad, Energoatomizdat Publ., 1986, 592 p. (In Russ.)

15. Plotnikov S. M., Measurement Techniques, 2021, vol. 63, pp. 904–909. https://doi.org/10.1007/s11018-021-01866-9

16. Plotnikov S. M., RF Patent no. 2752353, Byull. Izobret., no. 21 (2021).


Review

For citations:


Plotnikov S.M. Method for determining of the optimal thickness of sheets of magnetic cores of electrical machines by the wattmeter method. Metrologiya. 2021;(3):35-47. (In Russ.) https://doi.org/10.32446/0132-4713.2021-3-35-47

Views: 213


ISSN 0132-4713 (Print)
ISSN 2712-9071 (Online)