Electric car charging
Hi-Lite stator component
Übersicht
Manual
Elektrobleche
Übersicht

Unsere ultradünnen Elektroblechlaminate eignen sich bereits für höchste, uns bekannte Drehzahlen. Entwickelt für die grünsten Hybridfahrzeuge, die modernsten Staubsauger und die schnellsten Autos in der Formel 1, setzt Hi-Lite neue Impulse bei der Innovation.

Für Frequenzen über den Standard von 50 Hz oder 60 Hz kann dünnerer Stahl erforderlich sein, um die Verluste gering zu halten. Unsere Sortiment, verfügbar mit einer Suralac®7000 Isolationsbeschichtung, ist jetzt auch mit dem Backlack Suralac®9000 verfügbar, der für mittlere bis hohe Grundfrequenzen (200 Hz bis 2.500 Hz) und Oberschwingungen bis über 25 kHz optimiert wurde. Für die extremsten Anwendungen haben wir Hi-Lite NO 10, den dünnsten breiten Elektroblechstreifen auf dem Markt, entwickelt. 

Advantages of thin gauge

Thin gauge electrical steels make it possible to make electric motors and generators with very high rotating speed. A standard 2-pole motor connected to the 50 Hz grid rotates at approximately 3000 rpm depending on motor type. Rotating at speeds of 10000 rpm or higher enable much higher power from a motor of the same size as the standard frequency motor. Equally these higher rotational speeds facilitate the delivery of a much smaller motor with the same power. The latter is demonstrated in the figure below in which the use of thinner electrical steel allows motors to be smaller, using less steel, and still obtaining the same power and efficiency.

Surahammars-hi-lite-motor-efficiency1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Raum und Gewicht 

Individuell optimierte 80 kW-Motoren mit internem Permanentmagnet mit der gleichen Effizienz verwenden verschiedene Stahlgüten. Raum und Gewicht können für höhere Drehzahlen mit dünnen Güten eingespart werden. Wir bieten weiterhin das Standard-Elektroblechsortiment für Motoren mit hohem Wirkungsgrad an. 

High frequency losses

To maintain high motor efficiency at high speeds, the steel used in the motor needs to have low magnetic losses at high frequencies. At these frequencies the total losses are dominated by eddy current losses, which are proportional to the strip thickness squared and inversely proportional to the electric resistivity of the strip. Thus, thin gauge, in combination with high silicon and aluminium content in the steel (increases resistivity), are needed for low loss at high frequencies. Hi-Lite™ grades are made using two different chemical compositions, resulting in two groups of grades called “N” and “H”.

 

Surahammars-hi-lite-motor-efficiency2

 

 

 

 

 

 

 

 

 

 

 

 

 

The importance of strength

The rotors of internal permanent magnet motors, typically used in electric vehicles, have thin “bridges” of steel keeping the magnets in the rotor in place. The thinner these “bridges” can be made, the higher the torque of the motor. In combination with high rotational speeds these “bridges” are subject to high mechanical stresses. Thus, the strength of the steel in the rotor is of great importance for the performance and durability of high speed internal permanent magnet motors.

Hi-Lite™ grades have high minimum levels of strength in combination with low loss. This is mainly obtained via the mechanism called “solid solution strengthening” coming from the high amounts of silicon and aluminium added to the steels. 

surahammars-hi-lite-motor-efficiency3
Technical specification
Manual
ELECTRICAL STEEL
Technical specification

Our Hi-Lite™ grades significantly reduces losses at higher frequencies compared to normal gauge electrical steels. Opening a whole new array of design and application possibilities for your business. Another focus area is our HP-grades (High Permeability) for applications where improved permeability is of importance. A recent addition to our product portfolio are our grades with guaranteed mechanical strength.

For more detailed data on our Hi-Lite™ grades please contact Surahammars Bruk at sales@sura.se

Hi-Lite Gauge Max Loss Min Jpeak at 50 Hz Min. Mech. properties  
Grade mm W/kg T MPa    
    1.0 T 400 Hz 1.0 T 700 Hz 2500 A/m 5000 A/m Rp0.2 Rm Datasheet
NO10-1270N 0.1 12.7 23.6 1.52 1.63 330 430 link
NO12-1180N 0.12 11.8 24.2 1.54 1.64 330 430 link
NO15-1230N 0.15 12.3 25.6 1.54 1.64 330 430 link
NO18-1280N 0.18 12.8 27.5 1.55 1.65 330 430 link
NO20-1350N 0.2 13.5 29.1 1.55 1.65 320 410 link
NO18-1160H 0.18 11.6 25.5 1.51 1.61 395 495 link
NO20-1200H 0.2 12 27.5 1.52 1.62 400 500 link
NO20-1300H 0.2 13 28 1.53 1.63 420 520 link
NO25-1350H 0.25 13.5 31.5 1.52 1.62 420 520 link
NO27-1400H 0.27 14 32.4 1.55 1.64 420 520 link
NO27-1450H 0.27 14.5 34.4 1.52 1.62 420 520 link
NO30-1500H 0.3 15 36 1.52 1.62 420 520 link
NO35-1750H 0.35 17.5 42.2 1.52 1.62 420 520 link