Title :
Stray load loss efficiency connections
Author :
Nagornyy, A. ; Wallace, Alan K. ; Jouanne, A.V.
Author_Institution :
Nat. Res. Council, Cleveland, OH, USA
Abstract :
This paper deals about the stray load loss efficiency in electrical machines. Induction motors are the most commonly employed electrical machines, in industries. When examining the losses of an induction machine, it is possible to identify the "conventional" losses that include stator and rotor conductor losses, magnetic core loss, frication and windage loss. However induction motors also have an additional power loss component termed "stray load loss" (SLL) which is caused by practical nature of the machine. However, SLL is very significant part of overall losses that may have a big influence on the temperature situation of the motor. The evaluation of SLL in induction motors is an important part of the efficiency estimation process. The use of calorimetry precisely determines the stray load loss.
Keywords :
calorimetry; induction motors; loss measurement; losses; magnetic cores; rotors; stators; calorimetry; efficiency estimation process; electrical machines; frication loss; induction motors; magnetic core loss; power loss component; rotor conductor loss; stator conductor loss; stray load loss; windage loss; Calorimetry; Core loss; Frequency; Friction; Induction motors; Magnetic losses; Stator cores; Testing; Variable speed drives; Voltage;
Journal_Title :
Industry Applications Magazine, IEEE
DOI :
10.1109/MIA.2004.1286621