What is the difference between a synchronous motor and a stepper motor?
There is a rotating magnetic field speed, the speed of the asynchronous motor is always smaller than this speed, and the synchronization is equal to the magnetic field speed. Asynchronous motors are inexpensive and easy to maintain. In production, 90% of the electric power is asynchronous motor, and synchronous motor is widely used to drive mechanical equipment which does not require speed regulation and power.
Stepper motor is a fixed point in a step by step rotation of the motor, also can be very fast, so that you can't distinguish between "turn - stop - stop...", such as the print head needle type printer drive motor is a stepper motor, the print head only printed on the "stop" when a then, the rotation of the motor fixed angle, the print head is moved to the next point, stop, and then print a point, of course, this process is very fast.
Synchronous motor is AC constant speed motor, the speed and power frequency synchronization, such as 50 weeks, 2 poles for 3000 turn, and 4 extremely 1500 turns.
