Sünkroonmootoritel

Sünkroonmootoritel is a type of AC electric motor that operates at synchronous speed, meaning its rotor rotates at the same speed as the rotating magnetic field of the stator. This synchronous speed is determined by the frequency of the AC power supply and the number of poles in the motor. Unlike induction motors, which rely on induced current in the rotor, the rotor of a synchronous motor is typically magnetized either by permanent magnets or by a DC current supplied through slip rings. This independent magnetization allows synchronous motors to maintain a constant speed regardless of load variations, up to their pull-out torque limit.

Synchronous motors are known for their high efficiency and ability to operate at unity or even leading power factors. This power factor correction capability makes them valuable in industrial applications where improving the overall power factor of the electrical system is desired. They are often used in large industrial drives, such as compressors, pumps, and fans, where precise speed control and high efficiency are critical. The starting of synchronous motors can be more complex than induction motors, often requiring a special starting mechanism or being started as induction motors before being synchronized to the line frequency. Their ability to synchronize and maintain speed makes them essential for many heavy-duty applications.