Transverse Reaction in Synchronous Machines

The confusion existing at present in the theory of synchronous machines is shown to be due to insufficient experimental evidence of the behavior of this type of machine under transverse magnetizing (cross magnetizing) conditions. A method of testing which yields the needed data is described. The results of these tests on a particular machine are given and analyzed. It is proved, for the machine tested, that the effect of transverse reaction can be most accurately estimated by the use of a magnetomotive force diagram. Experimental constants useful in design are found. A theory of the operation of synchronous machines is proposed, and a diagram for finding the performance of a synchronous machine from experimental tests is given; which, it is hoped, will be more accurate than present methods.