 |
 |
 |
 |
 |
 |
 |
|
 |
 |
 |
|
 |
|
|
Copper Motor Rotor Commercialized
(continued) 
Doppelbauer said that he foresees numerous applications that could benefit from the groundbreaking technology. He explained that one of the most impressive advantages is the impact the technology has on the ultimate cost of ownership for the end user, which derive from increased efficiency as well as a possibly lower purchase price. “We believe that copper technology may have a positive impact on manufacturing costs in the future because it will be possible to reduce the size of the motor. Motor size is a major cost driver. If we could use copper technology to reduce the size of today's motors, we believe there would be a chance for significant price reduction,” Doppelbauer explained. “One might believe that copper motor rotors suffer from the increased weight of copper versus aluminum. However, this is not the case, since motors with copper rotors can reach the same efficiency and the same output power with substantially smaller moving parts than aluminum motors,” he said. “We found the general rule was that, when comparing on equal grounds, copper motor rotors have more or less the same moment of inertia as their aluminum counterparts. Even better: since the nominal slip of copper rotor motors is smaller than that of aluminum motors (i.e., the motor runs faster), the usability for frequency-converter operation is improved. Especially at low speeds and frequencies, the motor with a copper rotor reacts with much more stability to changing loads.” (Click here for detailed information on slip) MORE >> |
|