Which type of AC motor is most commonly used?

The AC induction motor is the most commonly used type of AC motor due to its simplicity, reliability, and efficiency. It operates on the principle of electromagnetic induction, which means that the rotor is energized by the rotating magnetic field produced by the stator without requiring any direct electrical connection. This design allows for fewer moving parts, which reduces wear and maintenance needs compared to other motor types.

Induction motors are widely used in industrial applications, commercial equipment, and home appliances because they can easily handle varying loads and are cost-effective to manufacture. They also have a robust construction and can operate efficiently in different environments.

In contrast, synchronous motors, while useful in applications that require precise speed control and power factor correction, are less common in general applications due to their increased complexity and cost. Stepper motors are more specialized and primarily used in applications requiring precise control of position and speed, such as in robotics and 3D printers. Universal motors, which can run on both AC and DC, are generally used in small appliances but are less common in industrial settings compared to induction motors. Therefore, the widespread availability, versatility, and cost-effectiveness of AC induction motors contribute to their prevalence in various settings.