Title :
Comparison of NEMA and ultra-high slip motors on cyclic loads
Author :
Durham, Marcus O. ; Lockerd, Clark ; Lea, James F.
Author_Institution :
Theway Corp., Tulsa, OK, USA
Abstract :
Standard information available for motors includes the horsepower, current, speed, power factor, and efficiency at discrete points. Torque at strategic points is also available. It is shown how the data points can be used to determine speed variation and efficiency for a motor. Determination of the most efficient induction motor for a given load is discussed. Ultrahigh slip motors as well as National Electrical Manufacturers´ Association design motors are evaluated. A comparison of operating costs and investment is presented.<>
Keywords :
economics; induction motors; investment; slip (asynchronous machines); standards; NEMA; costs; current; cyclic loads; design; economics; efficiency; horsepower; induction motor; investment; power factor; speed; standards; torque; ultra-high slip motors; Costs; Electric motors; Induction motors; Investments; Laser excitation; Production; Shafts; Synchronous motors; Torque; USA Councils;
Conference_Titel :
Industry Applications Society Annual Meeting, 1990., Conference Record of the 1990 IEEE
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-87942-553-9
DOI :
10.1109/IAS.1990.152376
