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New approach to the determination of synchronous-machine parameters from tests

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1 Author(s)
G. Shackshaft ; Central Electricity Generating Board, System Technical Branch Planning Department, London, UK

In the last decade or more, a number of tests on large synchronous machines and the associated analytical work have revealed certain inaccuracies in the theory of synchronous-machine performance, which has been used for the last half century. A new look is taken at the assumptions underlying the old theory and several of them are discarded in the derivation of a new theory which corrects many of the inaccuracies. The new theory results in new formulas for the calculation of machine parameters, such as transient reactance and transient time constant; it is particularly relevant in the calculation of parameters for synchronous machines with damper windings.

Published in:

Electrical Engineers, Proceedings of the Institution of  (Volume:121 ,  Issue: 11 )