6.3mm*5.5mm. According to relevant information from the China Road Machinery Network, the size of the permanent magnet wind turbine coil stator is 6.3mm*5.5mm. Permanent magnet direct drive fan is a kind of fan equipment. Domestic wind turbines mainly include permanent magnet direct drive fan and doubly-fed fan.
No! Large generators all use magnets to rotate, which means that the rotor is a permanent magnet and the stator is just a coil. This is convenient for generating high voltage, because if you make the coil on the rotor, you must use an electric ring to output the current. When the voltage is too high, sparks will be generated, which is not conducive to the stable operation of the generator. But using a coil as a rotor can also generate electricity, such as the motor on a tape recorder. If you spin it quickly, it will also generate electricity, but the voltage will be lower. As long as the coil cuts the magnetic lines, current will be generated, so whether the coil is used as a stator or a rotor, it can generate electricity. However, due to some practical considerations, large generators use coils as the stator and permanent magnets as the rotor!