A new method of dealing with the rotor windings of the cascade motor

The author was led to write this paper by reading Mr. F. Creedy´s paper entitled ¿Some Developments in Multi-Speed Cascade Induction Motors,¿ ¿ and the present paper mainly shows a new way of arriving at the same conclusions as Mr. Creedy. For the sake of clearness the new method of studying the subject is first applied to the ordinary windings which produce only one rotary field. The two-field windings on the rotor of the cascade motor are then treated, and finally some curves are given showing the amount of copper used in the cascade windings, compared with that employed in the ordinary windings.