ACsähkömoottorit

ACsähkömoottorit, or AC electric motors, are a type of electric motor that operates on alternating current (AC). They are the most common type of electric motor used in a wide variety of applications, from household appliances to industrial machinery. AC motors are generally reliable, efficient, and cost-effective.

There are two main types of AC electric motors: induction motors and synchronous motors. Induction motors are the most prevalent, relying on the magnetic field created by the stator to induce a current in the rotor, which then creates its own magnetic field. This interaction causes the rotor to spin. Synchronous motors, on the other hand, have a rotor that rotates at the same speed as the rotating magnetic field of the stator. This synchronization is achieved through various methods, often involving permanent magnets or DC-excited windings in the rotor.

The operation of AC motors is based on the principle of electromagnetism. When AC current flows through coils in the stator, it generates a rotating magnetic field. This field interacts with the magnetic field of the rotor, causing it to rotate and produce mechanical power. The speed of an AC motor is primarily determined by the frequency of the AC supply and the number of poles in the motor.

AC motors are widely used due to their robustness, low maintenance requirements, and ability to operate at various speeds, especially with the advent of variable frequency drives (VFDs). Their versatility makes them indispensable in many sectors of the modern economy.