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Japan develops electric motor sans rare earth metals

10/1/2010 03:28 PM EDT
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chanj0
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re: Japan develops electric motor sans rare earth metals
chanj0   10/1/2010 4:56:21 PM
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Japanese sets the right direction. It is better to cut off the dependency of rare metal. What's your thought?

Robotics Developer
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re: Japan develops electric motor sans rare earth metals
Robotics Developer   10/1/2010 5:59:07 PM
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I am all for it! I hope that the technology solution can be shared and everyone benefit. Oftentimes we go for an easy solution instead of the harder elegant design, going the extra mile to avoid the need for rare earth materials is a great example of this in practice. I wonder how the size, cost, and performance compare to the rare materials counterparts? Any information or comparisons available?

Silicon_Smith
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re: Japan develops electric motor sans rare earth metals
Silicon_Smith   10/1/2010 6:31:48 PM
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For a big economy like Japan, it is essential to cover all strategic bases. Happy to see the scientific community standing up and deliverging.

DrQuine
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re: Japan develops electric motor sans rare earth metals
DrQuine   10/4/2010 6:03:06 AM
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This is the kind of news that gives creative engineers well deserved recognition. In addition to governments and industry moving ahead on improving access to limited raw materials - a technical solution is developed that reduces the needs for such ingredients. Well done!

yalanand
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re: Japan develops electric motor sans rare earth metals
yalanand   10/4/2010 8:41:50 AM
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Necessity is the mother of invention. This is a classic example of that.

santana338
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re: Japan develops electric motor sans rare earth metals
santana338   10/4/2010 8:26:33 PM
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Why is this a big deal? Tesla's motors don't use rare earth magnets. Seems like Japan Inc is just catching up to Silicon Valley. http://www.teslamotors.com/roadster/technology/motor Quote: Some motors use permanent magnets, but not the Roadster motor -- the magnetic field is created completely from electricity.

PhilerupEE
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re: Japan develops electric motor sans rare earth metals
PhilerupEE   10/5/2010 1:49:45 AM
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Of course they can, Motors were built before RE magnets were developed and even without PMs, but RE magnets have much greater energy product than the best AlNiCos so unless minimum size and weight is no object, old fashioned motors are fine. P. Studer

jackOfManyTrades
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re: Japan develops electric motor sans rare earth metals
jackOfManyTrades   10/5/2010 7:15:28 AM
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"sans"? I know - it's French for without, but I thought you guys all learnt Spanish at school (I did when I went to school in the US). Is "sans" common parlance in the US?

kalpak
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re: Japan develops electric motor sans rare earth metals
kalpak   10/7/2010 5:50:18 AM
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If we could get over our dependence on petroleum....

RWatkins
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re: Japan develops electric motor sans rare earth metals
RWatkins   10/8/2010 7:10:53 PM
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In line with santana338, has everyone forgotten the reduced cost and broader speed range performance available with switched reluctance motors (SRMs), and the simplicity and low cost associated with induction motors? These are devices that have been around since the 1800's, but with modern electronics can now be controlled and powered efficiently. Of course there are applications where the ability of the permanent magnet synchronous motor (commonly referred to as brushless DC or BLDC, and needing good permanent magnets for efficiency) to generate electricity without an external power source can be useful. But knowing when and what to use is our job as engineers...

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