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powercore® Traction for e-mobility and high frequencies

For improved efficiency and power density

powercore® Traction

Our powercore® Traction electrical steel is a highly pure, magnetically soft iron-silicon alloy that is used to guide and concentrate the magnetic flow present in the motor.

The powercore® Traction non oriented grades meet the demands of high-performing and efficient drive systems. They are very thin, have homogenous mechanical properties, low remagnetization losses, and high polarization.

Gets electric mobility rolling: powercore® Traction electrical steel

Rüdiger Schorn

The electric motor is the heart of the electric vehicle, and electrical steel is indispensable for the electric motor. powercore® Traction electrical steel strip has been specially developed and optimized for the high demands of electric mobility. Rüdiger Schorn, Product Manager for Electrical Steel at thyssenkrupp Steel Europe, explains what the high-tech material can do, how different motor types and drive systems affect the demands placed on it, and what the consequences are.

1. What is powercore® Traction?

Our powercore® Traction electrical steel is the logical further development of our non-oriented (NO) electrical steel for the high demands of electric mobility: High efficiency for long ranges, high torque for maximum driving dynamics, and all this under high cost pressure.

2. How does electrical steel strip drive the electric motor?

Our powercore® Traction grades are used to build what are referred to as rotors and stators. In the process, our grades amplify and direct the magnetic flux in the coils. Typically, a rotating magnetic field is generated on the outside of the stator, which is followed by the rotor on the inside. However, there are very different motor types and drive philosophies in current electric vehicles. Asynchronous machines and synchronous machines, permanently excited – i.e. with magnets – or separately excited, with single-speed or multiple-speed gearboxes. Each combination results in a different requirement profile for the electrical steel strip. Therefore, powercore® Traction also stands for a product family with various different grades. We operate our own motor test bench in our Application Technology department, where we test our powercore® Traction grades in the various motor types. This enables us to provide our customers with the best possible advice on selecting the right grade depending on the customer's specific requirements.

3. What properties must the electrical steel strips have for this?

As already mentioned, this depends very much on the respective motor and drive concepts. The trick is to always ideally match the 3 core requirements of low power dissipation, high polarization and mechanical strength to each respective application of our customers, in addition to many other requirements. A basic requirement that always applies is to achieve properties that are as homogeneous as possible over the strip length and width. This applies to the magnetic properties as well as to the mechanical properties and geometric tolerances, which are highly relevant for the die cutting and packaging processes.

Electrical steel for e-mobility and high frequencies
DIN EN 10303

Steel grade Reference grade­
DIN EN 10303
Thickness Density Max. Core loss at Min. Polarization at Yield strength


[mm]


[kg/dm3]
400 Hz
1.0 T
[W/kg]
2,500 
A/m
[T]
5,000 
A/m
[T]
10,000 
A/m
[T]
Rp0.2
[MPa] min.
powercore® Traction
020-130Y320
NO20-13 0.20 7.60 13 1.48 1.59 1.69 320
powercore® Traction
020-130Y350
NO20-13 0.20 7.60 13 1.48 1.59 1.69 350
powercore® Traction
020-150Y320
NO20-15 0.20 7.60 15 1.48 1.59 1.69 320
powercore® Traction
025-140Y400
NO25-14 0.25 7.60 14 1.52 1.61 1.71 400
powercore® Traction
027-140Y420
NO27-15 0.27 7.60 14 1.51 1.61 1.73 420
powercore® Traction
027-150Y3701
NO27-15 0.27 7.60 15 1.52 1.61 1.73 370
powercore® Traction
027-150Y4201
NO27-15 0.27 7.60 15 1.52 1.61 1.73 420
powercore® Traction
027-180Y3701
NO27-18 0.27 7.60 18 1.52 1.61 1.73 370
powercore® Traction
030-160Y4201
NO30-16 0.30 7.60 15 1.52 1.61 1.73 420
powercore® Traction
030-150Y4201
NO30-16 0.30 7.60 16 1.52 1.61 1.73 420
powercore® Traction
032-190Y3301
NO35-19 0.32 7.65 19 1.52 1.62 1.74 330
powercore® Traction
035-170Y4201
NO35-19 0.35 7.60 17 1.52 1.61 1.73 420
powercore® Traction
035-180Y400
NO35-19 0.35 7.60 18 1.52 1.61 1.73 400
powercore® Traction
035-190Y390
NO35-22 0.35 7.60 19 1.52 1.61 1.73 390
powercore® Traction
035-220Y300
NO35-22 0.35 7.65 22 1.55 1.64 1.76 300
powercore® Traction
035-220Y330
NO35-22 0.35 7.65 22 1.52 1.62 1.74 330

1. Steel grades are characterized by very good processing properties with advantages in final applications.
Rp0.2: Yield strength to DIN EN ISO 6892-1 in rolling direction at room temperature.

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thyssenkrupp Steel Europe AG

Kaiser-Wilhelm-Strasse 100

47166 Duisburg, Germany

+49 (0)203 52-0

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