Title :
Correlation of Forced and Free Oscillations of Coils and Windings
Abstract :
This paper shows that there exists a simple relationship between the forced and free oscillations of coils and windings which are generally treated in the literature as two separate phenomena. As a consequence, a correlation also exists between certain natural frequencies of a coil or winding under different terminal conditions. Experimental measurements on air coils, iron-core coils, and transformer windings prove the correctness of the theory. The frequencies are determined analytically by energy methods.
Keywords :
Cable shielding; Coils; Epoxy resins; Glass; Insulation life; Oil insulation; Power transformer insulation; Seals; Sparks; Testing;
Journal_Title :
Power Apparatus and Systems, Part III. Transactions of the American Institute of Electrical Engineers
DOI :
10.1109/AIEEPAS.1959.4500490