Abstract :
The machine by Mr. Stanley is of great interest, and remarkable by reason of its reactions, which permit, without change of excitation, an automatic compounding or over-compounding; is that, a rise of voltage with increase of load. Perhaps the internal reaction of the machine and its mode of operation may be made a little clearer by looking at it from another point of view; namely, as a frequency-converter. The machine is an induction machine containing primary windings connected with an impressed electromotive force, of low frequency in this instance, and secondary windings connected to an external circuit load, and movable relatively to the primary windings. Now, in the simplest form this can be shown diagrammatically in Fig. 1.
