Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Iowa State Engineer Wants to ‘Sculpt’ More Powerful Electric Motors and Generators

30.01.2012
Dionysios Aliprantis took up an imaginary hammer and chisel and pounded away at the air.

“Think of the ancient Greeks and their sculptures,” said the Iowa State University assistant professor of electrical and computer engineering.

Now apply the idea of a sculptor precisely chipping away at stone to the electric motors that run our machines and generate our electricity. Aliprantis is working to develop computer modeling technology that will show engineers how to chip away at the surfaces of electric motors to create new designs and shapes that can increase power generation.

“The goal is to get more power out of the same size motor,” he said. “Or, that could mean getting the same power with a smaller motor.”

Aliprantis is quick to say he’s not looking for a huge improvement in a motor’s performance.

“I’m looking for a little bit of increase, maybe 5 percent or 1 percent,” he said. “But multiply that number by the number of hybrid cars, let’s say, and you could get savings in the billions of dollars. The potential here could be huge.”

Aliprantis’ project is supported by a five-year, $400,000 grant from the National Science Foundation’s Faculty Early Career Development Program. The grants support junior faculty identified as teacher-scholars through outstanding research, excellent education and the integration of education and research.

Assisting with the motor design project is Yanni Li, a doctoral student in electrical and computer engineering.

Aliprantis and Li want to take advantage of the fact that most electric motors and generators operate in just one direction – in most applications there’s no real need for them to go into reverse. The motors, however, have long been designed to offer equal performance no matter which way they’re rotating.

And so the engineers are exploring how electric motors can be improved by optimizing performance in a preferred direction of rotation. To do that, they’ve written a computer modeling program that incrementally changes the design of the motors – just like a sculptor chipping away – and calculates when the surface shape is just right.

The teeth that hold coils of wire within an electric motor, for example, have typically been built with a symmetrical shape that maintains performance in either direction. By making the teeth asymmetrical, the engineers hope the motor can pick up some power when rotating in the preferred direction.

“We are trying to develop a systematic way of getting to the right shape,” Aliprantis said. “This idea is very simple, but motors are still being designed using techniques that are essentially one hundred years old.”

Aliprantis is also busy with other projects to improve electric motors, advance alternative energy systems and improve engineering education:

• Another project is aiming to improve the models used to predict the dynamic performance of electric motors as engineers experiment with different power electronics and control technologies. The idea is to develop more sophisticated control systems that capture more of a motor’s performance characteristics. The project is supported by Iowa State’s department of electrical and computer engineering and includes Yuanzhen Xu, a master’s student in electrical and computer engineering.

• Aliprantis is also collecting data on how much solar energy is available throughout a day. The idea is to improve power forecasts by developing better models of cloud cover. That would help utilities make better estimates of the power they can expect from solar panels on a given day. Chengrui Cai, a doctoral student in electrical and computer engineering, is assisting with the project.

• Aliprantis is part of an Iowa State faculty team that’s developing a new, multidisciplinary doctoral program in Wind Energy Science, Engineering and Policy. He’s also using a National Science Foundation grant to work with Purdue University faculty to improve undergraduate education in power electronics and motor drives by modernizing student lab equipment and course content.

Because electric motors are all around us – in vehicles, wind turbines, power plants and all kinds of machinery – Aliprantis said finding new ways to improve their performance can make a real difference in the development of sustainable energy resources.

Dionysios Aliprantis | Newswise Science News
Further information:
http://www.iastate.edu

More articles from Power and Electrical Engineering:

nachricht Harvesting the Sun for Power and Produce
24.11.2017 | Fraunhofer-Institut für Solare Energiesysteme ISE

nachricht Batteries with better performance and improved safety
23.11.2017 | Empa - Eidgenössische Materialprüfungs- und Forschungsanstalt

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: New proton record: Researchers measure magnetic moment with greatest possible precision

High-precision measurement of the g-factor eleven times more precise than before / Results indicate a strong similarity between protons and antiprotons

The magnetic moment of an individual proton is inconceivably small, but can still be quantified. The basis for undertaking this measurement was laid over ten...

Im Focus: Frictional Heat Powers Hydrothermal Activity on Enceladus

Computer simulation shows how the icy moon heats water in a porous rock core

Heat from the friction of rocks caused by tidal forces could be the “engine” for the hydrothermal activity on Saturn's moon Enceladus. This presupposes that...

Im Focus: Nanoparticles help with malaria diagnosis – new rapid test in development

The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.

Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

IceCube experiment finds Earth can block high-energy particles from nuclear reactions

24.11.2017 | Physics and Astronomy

A 'half-hearted' solution to one-sided heart failure

24.11.2017 | Health and Medicine

Heidelberg Researchers Study Unique Underwater Stalactites

24.11.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>