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Power Electronics Design
book

Power Electronics Design

by Keith H. Sueker
April 2011
Intermediate to advanced content levelIntermediate to advanced
272 pages
6h 11m
English
Newnes
Content preview from Power Electronics Design
78 7 Transformers and Reactors
if P to S1 = X, P to S2 = X, S1 to S2 = Y
then, A + B = X, A + C = X, B + C = Y
and A = X – Y/2, B = Y/2, C = Y/2
If the secondaries are tightly coupled, then Y is very low, and the
equivalent reactance is nearly all in the primary. If they are poorly
coupled so that Y is high, the primary reactance, A, may go negative.
If the secondaries have a particular coupling to each other, the primary
reactance can be zero, and all the equivalent reactance is in the sec-
ondaries. A negative primary reactance implies a regulation character-
istic in which the secondary voltage of a converter falls less under
load, and this can be ...
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Publisher Resources

ISBN: 9780750679275