Optimización de la Eficiencia en Motores de Inducción de Ranuras Semiabiertas Mediante Empleo de Cuñas Magnéticas

E. GIRALDO; C.R. RUSCHETTI; C. VERUCCHI; G. R. BOSSIO; J. M. BOSSIO

CABA

Congreso; IEEE ARGENCON 2016, Congreso Bienal de IEEE Argentina; 2016

IEEE

In the last few years, new requirements for induction motors efficiency have been imposed Therefore electrical machines manufacturers have had to redefine their design criteria in order to reduce the losses level with the aim to achieve efficiency values established by the IE2 and IE3 categories of the International Electrotechnical Commission (IEC). Given that, in the near future, is expected to increase the demands regarding efficiency (IE4 and IE5 categories), it is considered appropriate to seek new alternatives to further reduce losses in induction motors. In this work the possibility of using magnetic wedges in semi-open slot is studied. This alternative allows for a reduction on copper and core losses of the motor and thus increase their efficiency. The study is aimed at low power motors and considers different permeability and geometries into wedges. Finally, conclusions of a study of a 3 kW motor, 380 V, 4 pole, IE2 class are presented.