Theory of Two and Three Phase Gcne ators

Abstract

The paper treats rigorously a theory on t o and thrcc phase ien rators; taking the following assumptions, that the poles are nonsalicnt, that the entire iron core is finely laminated, that the wave form of flux produced in both the ariture and fieid coils is sinu-soidal and that inductance of same is constant and independent of the manitude of electrical current. The order of presentation is as fol. o. vs. At first, the authors by seeking complete solutions of fundamental differential equations, determine instantaneous value of current subjected to sudden change of load in general. Next, as an illustration of application of the method the value of sudden short circuit current of a generator is calculated. Finally, the foregoing results are compared to those obtained by the usual interpretation hithero generally has been used.
The case in which, ho sever, the field core is made of solid iron is similar to the case of the sine wave altcrnator that was treated in the article appeared in the previous number.