Some aspects of electric-motor design — Polyphase-induction-motor design to meet fixed specifications

A curious gap exists in the technical literature dealing with electrical-design methods. Procedures for determining performance by various analyses and for various testing methods can be found on nearly all of the more common machines. Yet the novice or the intelligently curious, interested in the field of design, finds but few references in the technical literature concerning the procedure whereby the machine dimensions were first determined and the completed design made. While it is true that a comparatively small group of engineers may be concerned with such design work, the philosophy and technique of approach could be of interest to an entire profession which is so profoundly influenced by the designer´s work.