Evaluation of efficient motors

Journal Article · Wed Apr 01 04:00:00 EST 1981 · Mod. Ind. Energy; (United States)

OSTI ID:7097633

Montgomery, D C

New factors of importance in customer specification of electric motors are discussed. These factors are: (1) efficiency; and (2) power factor. The importance of these factors are discussed as is the importance of energy conservation and energy costs. Confusion existing concerning motor efficiency is reviewed and an exact definiton (watts output divided by watts imput) is provided. Motor losses (of energy) are discussed as well as test methods to determine electric motor efficiency. Motor power factor is defined and illustrated and it is shown how efficiency or power factor vary with the percent load and how the power factor penalty may be calculated. Knowing the charactristics of the motor, including efficiency and power factor, it is shown how potential savings may be evaluated. Relative importance of efficiency and power factor are treated briefly. (MJJ)

• Research Organization: General Electric Co., Hendersonville, TN
• OSTI ID: 7097633
• Journal Information: Mod. Ind. Energy; (United States), Journal Name: Mod. Ind. Energy; (United States) Vol. 61:4; ISSN MOIED
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
ECONOMICS
EFFICIENCY
ELECTRIC MOTORS
ENERGY ANALYSIS
ENERGY CONSERVATION
EVALUATION
MOTORS
POWER FACTOR