INTECIN   20395
INSTITUTO DE TECNOLOGIAS Y CIENCIAS DE LA INGENIERIA "HILARIO FERNANDEZ LONG"
Unidad Ejecutora - UE
artículos
Título:
Amorphous and Nanocomposite Materials for Energy-efficient Electric Motors
Autor/es:
PATRICIA XU; ALEX LEARY; VLADIMIR KEYLIN; MICHAEL MCHENRY; JOSEFINA M SILVEYRA; VINCENT DEGEORGE
Revista:
JOURNAL OF ELECTRONIC MATERIALS
Editorial:
SPRINGER
Referencias:
Año: 2016 vol. 45 p. 219 - 225
ISSN:
0361-5235
Resumen:
We explore amorphous soft magnetic alloys ascandidates for electric motor applications. The Co-rich system combines the benefitsof low hysteretic and eddy-current losses while exhibiting negligiblemagnetostriction and robust mechanical properties. The amorphous precursors canbe devitrified to form nanocomposite magnets. The superior characteristics ofthese materials offer the advantage of ease of handling in the manufacturingprocessing and low iron losses during the motor operation. Co-rich amorphous ribbonswere laser-cut to build a stator of a small demonstrator permanent magnetmachine. The motor was tested up to ~30,000 rpm. Finite element analyses proved that ironlosses of the Co-rich amorphous stator were ~80% smaller than the losses of a Si steel stator inthe same motor, at 18,000 rpm (equivalent to an electric frequency of 2.1 kHz).These low-loss soft magnets have great potential for applications into highlyefficient high-speed electric machines, leading to size reductions and reducingor replacing rare-earths in permanent magnet motors. More studies evaluatingfurther processing techniques of amorphous and nanocomposite materials areneeded.