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Generator Neodymium Magnet Wind Turbine Generator Magnets
Typical magnetic properties of sintered neodymium iron boron for permanent magnet wind turbines
Neodymium permanent magnets are known as the third generation rare earth permanent magnets and have the highest magnetic properties to date. The main phase of sintered neodymium iron boron alloy is the intermetallic compound Nd2Fe14B, with a saturation magnetic polarization strength (Js) of 1.6T<1>. Due to the fact that the sintered neodymium iron boron permanent magnet alloy consists of the main phase Nd2Fe14B and grain boundary phases, and the grain orientation of Nd2Fe14B is limited by process conditions, the maximum residual magnetism of the magnet can currently reach 1.5T.
When designing permanent magnet motors, advanced NdFeB is usually chosen to achieve high air gap magnetic density. When the electric motor is running, neodymium magnets with high coercivity are required due to the alternating demagnetization field and the instantaneous high current demagnetization effect when the load suddenly changes.
Max Operating Temperature
| grade | Max Operating Temperature | grade | Max Operating Temperature |
| N30-N54 | 80℃(176℉) | N30UH-N45UH | 180℃(356℉) |
| N30M-N52M | 100℃(212℉) | N30EH-N38EH | 200℃(392℉) |
| N30H-N52H | 120℃(248℉) | N32AH | 220℃(428℉) |
| N30SH-N45SH | 150℃(302℉) |
