As a result of an entirely new way of making magnetic components in electric motors, the aggregate production cost for such motors is expected to be cut in half and the output of the motor to be nearly doubled. The method is the result of fifteen years of collaboration between researchers from the fields of electrical power systems and industrial production at the Lund University Faculty of Engineering in Sweden.
A key component in all of these motors is the magnetically conductive material, usually made up of bundled laminated thin plates with coils wound around them. This type of motor construction contains many small parts and takes a long time to manufacture.
“Electric motors have largely been made in the same way since the 1850s. Only in the last 10-15 years have alternative production methods been studied,” says Mats Alküla, professor of electrical power systems at the Engineering Faculty.
Together with his research colleagues Tord Cedell and Mats Andersson, Mats Alküla has found that an alloy of iron powder and a certain sort of plastic functions well in motor applications, among others, attaining good energy efficiency. By molding melted plastic and iron particles, which make the part weakly magnetic, in various forms, full freedom of form can be achieved. Besides higher quality and greater freedom of form, this method reduces the number of production steps from about 60 to only a few. The development of the material itself started in the late 1980s at the Section for Industrial Production, within the framework of the so-called materials technology consortia, funded partly by what is now Vinnova (Research and Innovation for Sustainable Growth).
“The technique is not suitable for high-performance motors, such as servo motors. But for fans, pumps, household appliances, and cars it’s a perfect fit,” explains Mats Alküla.
This research is funded with a total of SEK 12 million over five years from Vinnova, the Foundation for Strategic Research (SSF), and Industri Kapital. A patent is pending, to be issued in late October. What will happen to the patented solution after that-whether a new company will be formed or the technology licensed out-has not yet been decided by the researchers at CEMECCenter for Electro-Magnetic Energy Conversion.
“The technology can pave the way for new possibilities, such as facilitating the conversion of cars to electric hybrid power. It’s worth mentioning in this connection that all methods that lead to simpler and cheaper production indirectly help curb carbon dioxide emissions,” adds Mats Alküla.
A prototype of the technology will be on display at the Lund University Faculty of Engineering booth at the Technology Fair in Älvsjö, Stockholm, Sweden, October 16-19.
Kristina Lindgärde | alfa
A big nano boost for solar cells
18.01.2017 | Kyoto University and Osaka Gas effort doubles current efficiencies
Multiregional brain on a chip
16.01.2017 | Harvard John A. Paulson School of Engineering and Applied Sciences
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
19.01.2017 | Event News
10.01.2017 | Event News
09.01.2017 | Event News
19.01.2017 | Earth Sciences
19.01.2017 | Life Sciences
19.01.2017 | Physics and Astronomy