DocumentCode
3336690
Title
Online efficiency diagnostic method of three phase asynchronous machines
Author
Bacher, Johann Peter
Author_Institution
Inst. of Drive Technol. & Electr. Machines, Univ. of Technol. Graz, Graz
fYear
2009
fDate
18-20 March 2009
Firstpage
685
Lastpage
690
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 standard three phase induction machines with different power ranges from 3 kW up to 500 kW are presented.
Keywords
asynchronous machines; stators; diagnostic method; phase induction machines; speed sensor; stator currents; stator voltages; three phase asynchronous machines; Acceleration; Air gaps; Costs; Current measurement; Induction machines; Shafts; Stators; Time measurement; Torque measurement; Voltage fluctuations;
fLanguage
English
Publisher
ieee
Conference_Titel
Power Engineering, Energy and Electrical Drives, 2009. POWERENG '09. International Conference on
Conference_Location
Lisbon
Print_ISBN
978-1-4244-4611-7
Electronic_ISBN
978-1-4244-2291-3
Type
conf
DOI
10.1109/POWERENG.2009.4915247
Filename
4915247
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