LS80L | LEROY-SOMER Three-phase motor

What is an AC motor?

An AC motor is a device that converts electrical energy into mechanical motion through magnetic fields. These motors are essential in many industrial and domestic applications thanks in particular to their efficiency and versatility.

The operation of the AC motor relies on magnetic induction. Inside the motor, coils of wire create a magnetic field when an alternating current passes through them. This field causes the motor armature to rotate. The asynchronous motor, a common type of AC motor, works on this principle, but with a rotational speed slightly lower than that of the generated magnetic field, hence the term "asynchronous".

Speed variation is one of the important characteristics of these motors. Unlike DC motors, AC motors can easily adjust their speed, which is crucial in applications such as conveyors or fans.

The capacitor, which a motor of this type is equipped with, also allows the motor to be started with a higher torque, which is particularly useful in applications requiring starting under load.

In AC machines, the stator winding creates a magnetic field that induces a current in the rotor, causing the motor to rotate. This design is a mainstay in the manufacturing of many household equipment and appliances.

Another essential component of these engines is the alternator, which converts mechanical energy into electrical energy, in generators for example. The alternator powers the engine by producing the necessary alternating current.

AC motors are versatile and efficient electric motors, offering precise control of rotational speed and significant useful torque, these parts are essential in many industrial and commercial applications.

What machines run on an AC motor?

Machines running on an alternating current motor are omnipresent in our daily lives and in industry.

Power electronics play a vital role in controlling alternating current machines. It uses components such as converters and inverters to regulate the power supplied to motors powered by this type of current. These components are essential for adjusting motor speed and torque, for greater flexibility across different motor types.

In the industrial sector, elevators are a classic example of the use of AC motors. These motors ensure smooth and efficient operation, essential for the safety and comfort of users.

For all these qualities and versatility of use, AC motors are at the heart of many modern machines, from heavy industrial equipment to domestic appliances.

How to choose the power of your AC motor?

The power of an AC motor represents important data since it will guarantee the performance and energy efficiency of the system. When you need to choose the power of an AC motor, you need to consider several criteria:

The specific application of the engine

Determine the intended use: machine tool, ventilation system, etc.

Evaluate the nature of the load, constant or variable, that the motor will have to handle.

The required torque

Make sure the motor can provide the torque needed to start and maintain the movement of the load.

Avoid choosing a motor with too low or excessively high torque for your application.

Rotation speed

Consider if your machine requires a motor with speed variation capability.

Engine performance

Opt for a high-efficiency motor for long-term energy savings, despite a base purchase cost that may be higher.

Practical considerations

Engine size and ease of installation and maintenance.

Compatibility with your existing power system.

If you are looking for new or used AC motors, kheoos is the specialist in the reuse of industrial spare parts.