Active Circuits for Flux Waveform Compensation in Ferromagnetic Cores

Some new schemes using active circuits are proposed for realization of sinusoidal flux in a ferromagnetic core during loss testing. One of the suggested configurations facilitates the loss measurements to be made from the primary side itself. A few filter circuits enable the tests to be carried out on normal supply mains without the need for a calibration generator. Experimental results are reported to confirm the acceptability of the proposed schemes. Copyright © 1984 by The Institute of Electrical and Electronics Engineers, Inc.