1. The power frequency is 50 Hz, which means that the electromagnetic speed should reach 3000 rpm.
2. Electromagnetic speed = mechanical speed * pole number. Therefore, mechanical speed = 3000/P Generally speaking, P = 4~8. The larger the number of pole pairs, the larger the outer diameter of the generator, so the number of pole pairs of 8 pairs should be relatively large.
3. Taking p=4 pair as an example, the speed of the wind turbine is basically 750 rpm.
4. The speed of the wind power generator is proportional to the speed of the wind turbine. The proportion depends on the gear ratio of the gearbox.