The difference between three-phase synchronous motor and three-phase asynchronous motor:

1. The structure is different. The rotor of a synchronous motor has windings and brushes to supply power to the rotor, while the rotor of an asynchronous motor has no windings and no brushes.

2. The principles are different. Synchronous and asynchronous both refer to the relationship between the motor’s speed and the power frequency. The rotational speed of a synchronous motor is synchronized with the frequency of the AC power supply. The speed of an asynchronous motor is not synchronized with the frequency of the AC power supply.

3. Different applications. In terms of application, synchronous motors are used in situations with strict speed requirements and are also very expensive. Asynchronous motors are commonly used in general situations and are cheap.

Three-phase asynchronous motors have the advantages of simple structure, low price, durability, convenience in manufacturing, use and maintenance, and they also have high efficiency and load characteristics close to constant speed, so they can meet most industrial and agricultural production needs. Mechanical drag requirements. Therefore, it is the most produced and widely used motor among all types of motors.

The three-phase synchronous motor is a type of AC rotating motor, so named because its speed is always equal to the three-phase synchronous speed. Three-phase synchronous motors are mainly used as generators and can also be used as motors and condensers. In the modern power industry, whether it is thermal power generation, hydropower generation, or nuclear power generation, almost all three-phase synchronous generators are used.