Amorphous Stators 2019-02-03T18:04:07+00:00

Amorphous Stators

Efficient
Stable
Cost

The effective permeability of Fe-based amorphous alloy is obviously higher than that of silicon steel with high saturation magnetic induction strength and Bs value of 1.56T. The loss of Fe-based amorphous alloy at high frequencies is significantly lower than that of silicon steel. For motors with operating frequencies ranging from hundreds to thousands of Hz, Fe-based amorphous alloy is superior to silicon steel.

Characteristics  

  • High saturation induction of 1.56 Tesla—Reducing component volume.

  • Low coercivity—Increasing component efficiency.

  • Low core loss—Reducing temperature rise in devices.

  • Variable permeability by different heat treatments—Satisfying various application requirements.

  • Excellent thermal stability—Having a highest service temperature of 130oC.

  • Favorable for motor miniaturization

Physical Properties 

Saturation Magnetization(Bs)1.56TSaturation Magnetostrictive Coefficient(λs)<27×10-6
Curie Temperature(Tc)410℃Density(d)7.18g/cm3
Crystallization Temperature(Tx)535℃Resistivity(ρ)130μΩ-cm
Hardness(Hv)960Continuous Operating Temperature Range-55~130℃

Magnetic Properties

Transverse Field AnnealedNo Field AnnealedLongitudinal Field Annealed
Maximum Permeability μm>2×104>20×10425×104
Saturation Induction BS1.5 T1.5 T1.5 T
Remanence Br<0.5 T1.0 T1.2 T
Coercivity HC<4A/m<2.4 A/m<4A/m
Core loss (50 Hz, 1.4 T)<0.2 W/kg<0.13 W/kg<0.3 W/kg
Core loss (400 Hz, 1.2 T)<1.8 W/kg<1.25 W/kg<2 W/kg
Core loss (8 kHz, 1.0 T)<80 W/kg<60 W/kg<100 W/kg
Variation In Loss Between -55oC and 125 o<15%<15%<15%
Variation In Loss At 120 oC for 200 Hours<15%<15%<15%

Stator features

  • Maximum Designable Working Point Magnetic Induction Intensity,T  1.3

  • Residual magnetic flux density ,T  >0.2

  • Curie temperature,℃ 410

  •  Core Loss (50Hz,1.0T)<1w/kg

  • Core Loss (400Hz,1.0T)<5w/kg

  • Core Loss (1000Hz,1.0T)<15w/kg

  • Core Loss rate (-55-125℃)<15%

"Amorphous Inductor"

Applications

  • High-speed motor spindle

  • Electric vehicle

  •  High-speed centrifuge

  • Wind power and hydroelectric generator

  • High-speed infrared scanner

  • High-speed flywheel storage

  • Vacuum cleaner

  • Axial fan

  • Drill and other electric tools

  • Aviation and military equipment

  • Electronic and computer equipment

Performance Curves

Specification

P/NA-Outside diameterB-Inside diameterC-Height
SUMAS22101222±0.0510±0.0512±0.05

Magnetic Properties Test Result

Cores with other specifications can be provided concerning to customer’s demand.

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