| Electric motor (29) |  |
| Motor control (22) | |
| Winding (16) | |
| Electric motor (29) | |
| Motor control (22) | |
| Winding (16) | |
In standard hospital instruments the magnetization of the atomic nuclei in the human body is measured inductively using an electromagnetic coil.
which its moving by a set of electromagnetic coils underneath. T hose coils generate directional electromagnetic fields that cycle on
#New nanomaterial introduced into electrical machines Lappeenranta University of Technology in Finland has constructed the world's first prototype electrical motor using carbon nanotube yarn in the motor windings.
The presently most electrically conductive carbon nanotube yarn replaces usual copper wires in the windings. The motor prototype is built by the LUT Electrical engineering group as a start towards lightweight efficient electric drives.
to this end one of the objectives is to find higher-conductivity wires for the windings.
Thus future windings made of CNTS may have a double conductivity compared with the present-day copper windings.
If we keep the electrical machine design parameters unchanged and only replace copper with future carbon nanotube wires it is possible to reduce the Joule losses in the windings to half of the present-day machine losses.
No definite upper limit for the conductivity Traditionally the windings in electrical machines are made of copper which has the second best conductivity of metals at room temperature.
Despite the high conductivity of copper a large proportion of the electrical machine losses occur in the copper windings.
All these use copper in the windings. Consequently finding a more efficient material to replace the copper conductors would lead to major changes in the industry tells Professor Pyrh nen.
Standard methods are either to use a electromagnetic coil, for example, where a high current produces a magnetic field,
which offer the major novelty that the different magnetic states unlike the electromagnetic coil can be maintained without requiring a continuous flow of current
Expect to see some of the $500 billion a year currently spent on college tuition winding up in Silicon valley,
when we notice them doing their jobs. can go on Youtube without them winding up, making a bunch of noise!
They then surrounded the device with a series of large electromagnetic coils that, when turned on induce a magnetic field in the iron bars.
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