Inductance and Compression Forces in Double-Layer Coils

  • Georgiy N. TSITSIKYAN
  • Petr V. BOBROVNIKOV
Keywords: single-layer and double-layer solenoids, self-induction coefficient, axial compression forces

Abstract

Expressions for calculating the self-induction coefficients of two-layer and single-layer coils are considered, and related comparisons are carried out. Examples of calculating the induction coefficients for known design versions of coils are given. An expression for calculating axial compression forces in two-layer coils is presented. The axial compression forces in coils as part of three-phase load devices designed for testing generator sets of autonomous power plants have been calculated. The expressions obtained for calculating the inductances and axial compression forces in two-layer coils are quite concise and can be recommended for practical use. These expressions include only the coil design parameters: the number of turns in the layers, layer radii, winding pitches, and layer lengths. The article is illustrated with particular examples of calculating the coil inductance and compression forces.

Author Biographies

Georgiy N. TSITSIKYAN

(Krylov State Scientific Center, St. Petersburg, Russia) – Head of the Sector, Deputy Head of the NIO-11 Dept., Dr. Sci. (Eng.).

Petr V. BOBROVNIKOV

(Krylov State Scientific Center, St. Petersburg, Russia) – Leading Engineer of the NIO-11 Dept.

References

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1. Korovkin N.V., Vu Q.S., Yazenin R.A. A Method for Minimi-zation of Unbalanced Mode in Three-Phase Power Systems. – 2016 IEEE NW Russia Young Researchers in Electrical and Electronic Engineering Conference (EIConRusNW), 2016, DOI:10.1109/EICon RusNW.2016.7448257.
2. Korovkin N.V., Chechurin V.L., Hayakawa M. Inverse Problems in Electric Circuits and Electromagnetics. Springer Science, 2007, 331 p,
3. Knight D.W. An introduction to the art of Solenoid Inductance and Impedance Calculation [Electron. resource], URL: https://www.g3ynh.info/zdocs/magnetics/SolenoidZ.pdf (Date of appeal 15.12.2021).
4. Thompson M.T. Inductance Calculations Techniques – Part II: Approximations and Handbook Methods, Power Control and Intelligent Motion, 1999, 11 p.
5. Ramo S., Winnery J.R., Van Duzer T. Fields and Waves in Communication Electronics. Hoboken: Wiley, 1994, 859 p.
6. De Queiroz A.C.M. Mutual Inductance and Inductance Calculations by Maxwell’s Method [Electron. resource], URL: https://www.Researchgate.net/publication/266891743_Mutual¬_Inductance_and_ Inductance_Calculations_ by_Maxwell's_Method (Date of appeal 15.12.2021).
7. Numerical Methods for Inductance Calculation. Robert Weaver [Electron. resource] URL: http://electronbunker.ca/eb/CalcMethods.html (Date of appeal 15.12.2021).
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12. Tsitsikyan G.N., Antipov M.Yu. Elektrichestvo – in Russ. (Electricity), 2019, No. 10, pp. 48–53.
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Published
2021-12-15
Section
Article