PMG SMC Publications

World PM2016 – Development of a Novel Yokeless and Segmented Armature Axial Flux Machine Based On Soft Magnetic Powder Composites (WP1603296108)
The magnetic and mechanical properties of soft magnetic powder composites (SMC) have been recently significantly improved. Within the project “Design and analysis of an electric motor based on new material components (SMC)” Daimler AG, the Institute of Electrical Engineering (ETI) at the Karlsruhe Institute of Technology (KIT) and PMG Füssen GmbH examined and evaluated the use of soft magnetic composites in the electrical machine with segmented armature torus structure, especially as a main drive in hybrid electric or pure electric vehicles. Because of the existing three-dimensional magnetic flux in this machine topology, the complex soft magnetic components can only be manufactured with SMC rather than with conventional electrical steels. Based on 3D FEM electromagnetic analysis, the mechanical construction and analysis have been carried out and a prototype has been built at KIT. The measurements of the manufactured prototype on the test bench in ETI proved its simplicity, stability and functionality.

 

2013 SMM - SMC in Modern Electric Machines & Devices
Powder metallurgical manufacture has the singular ability to produce net shaped products (gear box parts, motor parts) for the automobile industry. Soft magnetic powder composites (SMC) coupled with the P/M production process open new possibilities in the design and manufacture of parts for electrical applications. With increasing values of operating frequency the use of SMC can contribute to a substantial decrease of specific core losses of the machine, increasing at the same time its total efficiency. In contrast to laminated cores, the manufacturing process of soft magnetic composites does not influence their final magnetic properties. These properties are homogenous and do not change after assembly of the motor. New SMC materials can outperform current laminated steel materials when measurements are done in the same conditions with similar samples. Many prejudices existing about the magnetic properties of SMC can thus be eliminated or attenuated if we respect its optimal use in adequate applications.

 

2013 PowderMet - Optimal Use of SMC in Electric Machines
Insulated pure iron powder or so called “Soft Magnetic Composite (SMC)” is finding more use in electric motor applications especially in motors operating at high frequency with a three-dimensional magnetic flux path. With increasing values of operating frequency the use of SMC can contribute to a substantial decrease of specific core losses of the machine, increasing at the same time its total efficiency. In contrast to laminated cores, the manufacturing process of soft magnetic composites does not influence their final magnetic properties. These properties are homogenous and do not change after assembly of the motor. New SMC materials can outperform current laminated steel materials when measurements are done in the same conditions with similar samples. Many prejudices existing about the magnetic properties of SMC can thus be eliminated or attenuated if we respect its optimal use in adequate applications.

 

2013 ema - Weichmagnetische Pulververbundwerkstoffe
Elektromobilitat: Weichmagnetische Verbundwerkstoffe ermöglichen in den Antrieben und Generatoren für Elektro- oder Hybridfahrzeuge höhere Arbeitsfrequenzen bei einer dreidimensionalen Magnetflussführung. Damit lassen sich neue Motorentechnologien entwickeln, die in besonderer Weise den Anforderungen der Elektromobilitat entsprechen. Neuartige Transversalflussmotoren mit einem breiten Drehzahlbereich und hoher Leistungsdichte sichern den Betrieb.

 

2013 EDPC - Magnetic Properties of SMC
To ensure a fair comparison of magnetic properties between electrical steels and SMC the measurements should be done on samples with a similar geometry. At a certain transition point of frequency the specific core losses of SMC become lower then those of electrical steels. Thus, the application of SMC instead of electrical steels in electrical machines operating at elevated frequencies can improve their efficiency.

 

2013 Hagen Symposium - Manufacture Challenges SMC
The Hagen Symposium, organised by the Fachverband Pulvermetallurgie, is the annual meeting for many German-speaking Powder Metallurgists. The 32nd symposium took place in Hagen’s Civic Hall from November 28-29th, 2013 and attracted over 200 participants and 62 exhibitors. In the last of our exclusive articles for Powder Metallurgy Review Dr Georg Schlieper reviews a paper by Dr Andreas Schoppa, PMG Füssen, on advances in PM Soft Magnetic Composites (SMCs).