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
Energy hybrid: Battery meets super capacitor
01.12.2016 | Technische Universität Graz
Tailor-Made Membranes for the Environment
30.11.2016 | Forschungszentrum Jülich
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water
In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...
The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.
Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
02.12.2016 | Medical Engineering
02.12.2016 | Agricultural and Forestry Science
02.12.2016 | Physics and Astronomy