Why is it that high speed motors rarely communicate?
The iron core of the motor will have copper damage, iron loss, increased communication frequency, and increased energy loss.
High-speed motor power is small, the production of dc easy, power gain, ac motor are rarely of more than 1500 turns, the high speed rotor of the centrifugal force is too large, high power motor generally do not need such a high speed. Series electric motor can be used for both the dc and dc, high speed, at home food processing machine, handgun drill and so on If you use a converter, you can do special high-speed motors, and the price of the converter is much higher than the motor.
12,000-15,000 revolutions per minute of this type of motor has a lot of communication! Especially centrifugal fan, we have a lot of application in our project!
Dc motor has a rapid response, large starting torque, rotating speed of from zero to rated speed can provide the rated torque performance, but the advantages of dc motor is also its drawback, because the direct current machine to produce a constant torque under the rated load performance, the armature magnetic field and rotor magnetic field must be constant to maintain 90 °, this is about to borrow from the carbon brush and commutator. The carbon brush and the commutator produce sparks and carbon powder when the motor is rotated, so there is a limit to the use of the place, except for the damage of the component. Ac motor without carbon brush and commutator, free maintenance, strong, wide application, but if you want to achieve the equivalent of dc motor according to the characteristic performance must use complex control technology to achieve. The ac motor is divided into asynchronous motors and synchronous motors. The asynchronous motor is divided into single phase asynchronous motor, two-phase asynchronous motor and three-phase asynchronous motor according to the number of stator phases. Three-phase asynchronous motor structure is simple, reliable and low cost.
