Title :
The impact of rotating field on core loss estimation in electrical machine laminations
Author :
Alatawneh, Natheer ; Pillay, Pragasen
Abstract :
An investigation and analysis of core losses in rotating AC machines shows that the stator is subjected to different types of flux density including pulsating and rotating. The rotating flux can be elliptical or circular. This paper describes the influence of different flux patterns on core loss estimation. Three different machines are simulated to calculate the zones of rotating flux density in the stator cores of these machines. Experimental tests are executed using a new magnetizing circuit based on an electromagnetic Halbach array which is able to generate different types of flux patterns with different frequencies. Furthermore, the percentage error made by assuming all flux is pulsating is calculated.
Keywords :
AC machines; electromagnetic fields; laminations; magnetic circuits; magnetic cores; stators; core loss estimation; electrical machine lamination; electromagnetic Halbach array; magnetizing circuit; pulsating flux; rotating AC machine; rotating field impact; rotating flux density; stator core; Core loss; Estimation; Induction machines; Magnetic field measurement; Materials; Stator cores; Finite element analysis; Rotational core losses; Two-dimensional measurements; electrical machines; electrical steel; magnetic materials;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2012 IEEE
Conference_Location :
Raleigh, NC
Print_ISBN :
978-1-4673-0802-1
Electronic_ISBN :
978-1-4673-0801-4
DOI :
10.1109/ECCE.2012.6342535
