High Efficiency Motor Systems
By Sergio Ferreira / Published on Tue, 2008-03-25 07:50
High efficiency motor systems can save 202 TWh of electricity use per year for industry in Europe. This information center provides tools and guidance to realise this potential.
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By Isabelle Heriakian / Published on Tue, 2007-07-03 00:00
The subject of the paper is the comparison of four complementary methods of the rotor loss estimation in a PM SM, supplied by a PWM voltage source. An ANSYS based finite element model produces values of W, the magnetic energy stored, and P, the rotor losses. On analytical level the machine is represented by a parallel two elements equivalent circuit for each voltage harmonic. Its parameters are estimated using P and W values. Finally, the eddy current losses representation in the ANSYS code is verified for magnets under study by direct losses measurements.
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By Hans De Keulenaer / Published on Fri, 2007-01-19 22:53
Another good case from our US colleagues showing high efficiency facilitates compact, high speed, low noise or low weight motor designs.
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By Hans De Keulenaer / Published on Mon, 2007-01-08 15:25
Replacing aluminium with copper in the rotor of an induction motor can increase efficiency by up to 5%. Today, motors with copper rotors are being produced in sizes ranging from 100W to almost 100 kW.
Courtesy: FAVI
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By Hans De Keulenaer / Published on Mon, 2006-11-27 22:31
This paper, presentation at EEMODS 05 by R Kimmich at alii, describes the performance of a range of induction motors specifically designed to use copper rotors. Efficiencies of the copper designs meet EFF 1 targets.
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By HDK / Published on Wed, 2006-02-01 16:31
Leonardo ENERGY minute briefing in 12 screens on the status of copper rotor motor technology.
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By Hans De Keulenaer / Published on Tue, 2006-01-31 19:26
The main advantage of using copper for the rotor of an induction motor is either cost reduction, or efficiency improvement. Since copper has a higher conductivity than aluminum (57 MS/m compared to 37 MS/m), it is a natural choice. However, its high melting point and the resulting high cost for die casting was for a long time a major barrier. Several technological breakthroughs in copper die-casting have been recently achieved, removing this barrier and clearing the way for industrial production.
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By HDK / Published on Wed, 2006-01-11 22:40
Please give us your opinion on copper motor rotor technology.
Take survey
After completion of the survey, participants can see a page with the interim results.
(Status January 11: 105 replies)
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