Determination of three phase induction machine efficiency from start up data

Author

Bacher, Johann Peter ; Waldhart, Florian

Author_Institution

Inst. of Drive Technol. & Electr. Machines, Univ. of Technol. Graz, Graz

fYear

2008

fDate

6-9 Sept. 2008

Firstpage

1

Lastpage

5

Abstract

There are various methods to determine the efficiency of three phase induction machines. But all of them have in common that they are to inaccurate or they are impracticable. In this paper the machine efficiency will be derived from start up data. For that purpose the variation with time of all stator currents and all stator voltages have to been measured. Normally it isn´t possible to mount a speed sensor on the machine. For this reason only the speed at the end of the start up can be determined. Practical results with three phase induction machines with different power ranges are presented.

Keywords

asynchronous machines; electric current measurement; machine testing; stators; voltage measurement; start up data; stator current measurement; stator voltage measurement; three phase induction machine efficiency; Air gaps; Costs; Current measurement; Induction machines; Paper technology; Shafts; Stators; Time measurement; Torque measurement; Voltage fluctuations;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines, 2008. ICEM 2008. 18th International Conference on

Conference_Location

Vilamoura

Print_ISBN

978-1-4244-1735-3

Electronic_ISBN

978-1-4244-1736-0

Type

conf

DOI

10.1109/ICELMACH.2008.4800174

Filename

4800174