Assessment of nonintrusive motor efficiency estimators

Author

Agamloh, Emmanuel B. ; Wallace, Alan K. ; Von Jouanne, Annette ; Anderson, Kenneth J. ; Rooks, James A.

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Oregon State Univ., Corvallis, OR, USA

Volume

41

Issue

1

fYear

2005

Firstpage

127

Lastpage

133

Abstract

Three instruments have been evaluated for their ability to estimate the load conditions and efficiency of operating motors based solely on measurements of terminal voltage and current. Laboratory tests, compared to a high-accuracy dynamometer system were used to assess the instruments´ accuracy. Field tests were conducted in a paper mill to determine the ease of use and lack of intrusion. In both laboratory and field tests the instruments were applied to 50-hp, 100-hp, and 200-hp 460-V induction motors. Data of the relative accuracies of the three instruments, as functions of motor load and supply voltage, are presented together with observations of ease and lack of intrusion in use.

Keywords

dynamometers; electric current measurement; induction motors; instruments; voltage measurement; 100 hp; 200 hp; 460 V; high-accuracy dynamometer system; induction motor; load condition estimation; motor load; nonintrusive motor efficiency estimator; supply voltage; Electrical resistance measurement; Induction motors; Instruments; Laboratories; Power measurement; Shafts; Testing; Torque measurement; Velocity measurement; Voltage;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2004.841000

Filename

1388670