Self-inductance coefficients for coils of different shape

Abstract

Object and purpose of research. This paper compares several recommended estimates for self-inductance coefficients of coils with different shape so as to identify possible limitations. Subject matter and methods. The comparisons are based on approximate and rigorous expressions for one and the same acceptable idealization for coil design through comparison of numerical results. Main results. The study yielded numerical results confirming the suitability of given approximate techniques. Conclusion. Simplified expressions are only applicable with acceptable restrictions. In other cases, the estimates should be obtained as per rigorous expressions.