Asynchronous electric motors

The most efficient devices that generate mechanical energy from electrical energy include an asynchronous motor. A DC asynchronous electric motor is a device with a rotating rotor in its structure. At the same time, in this unit, the rotation speed of the rotor's magnetic field differs from its own rotation speed, which is a key feature of the asynchronous motor operation. Based on this particular feature, the engine received an additional "asynchronous" component, because if the speed in the unit is leveled, then the effect of force on the main (rotary) part and the induction of current by a magnetic field will stop.

The device of an asynchronous electric motor

The device of the unit itself has the following key components:

• A rotor that can be either phase-locked or short-circuited. The first option includes a three-phase winding and most often has a "star" connection. The second type of rotor is represented by a core having aluminum rods, which are briefly insulated by the so–called "squirrel cage" - end rings;
• Structural components (parts) – bearings, impeller, shaft, paws, fan casing, bearing plates and terminal box – which actually provide the device with cooling, rotation and protection of the entire mechanism;
• A stator consisting of steel sheets. The core included in the rotor device has slots, into which the windings are laid in turn. Their axes are shifted in relation to each other by 120°.

The principle of operation of an asynchronous electric motor

Before you buy an asynchronous electric motor, you should learn more about its principle of operation.

The very principle of operation of the unit is already embedded in its attached adjective "asynchronous", which means non-synchronous operation. It follows that when the device is turned on, the rotor and stator present in it form rotating magnetic fields. These fields are created with different frequencies. In this case, the magnetic fields from the rotor rotation frequency are in all cases less than the frequencies from the same fields, but formed from the stator.

For a more detailed understanding of the principle of operation of an asynchronous motor, you can visually imagine such a process in your head or on a real example in life: pick up a permanent magnet and a copper disk. Place the copper disc on the table, and rotate the magnet several times around its axis: you will immediately notice that the disc began to rotate after the magnet, but with a slight delay. Thus, the so-called induction currents (Foucault) are generated in the structure of the copper disk, which carry out their movement in a closed circle. At the same time, a personal magnetic field is formed in it, which subsequently interacts with the magnetic field from the magnet itself.

In the case of an asynchronous motor, stator windings are used to create such a rotating field, and the magnetic flux formed by them generates an EMF in the rotor conductors. The interaction of the Foucault current and the stator magnetic field inside the rotor winding itself forms an electromagnetic force, which further drives the rotation of the shaft.

Fields of application of asynchronous motors

The field of application of asynchronous electric motors affects all spheres of human activity. For example, those types of devices that operate from a single phase are found in electronic tools, household appliances and any low-power mechanisms. These may be the following:

• Kitchen hood;
• Home fan;
• Soviet washing machines;
• Trimmers;
• And other items.

In industry, such types of engines can also be found in ventilation systems, pumps or compressors, mechanisms of winches and cranes, in metal and woodworking machines, and so on. In addition, today such devices are actively used in electric transport.

Buy an asynchronous electric motor from the Salutech company

If you wish to purchase an asynchronous electric motor, but still do not know where to turn, Salutech is pleased to welcome you to its online store. Here you will find a wide range of products for industry and personal use, as well as a huge number of parts and equipment for your devices. The electric motor is asynchronous, the price of which is lower than anywhere else there is only at Salutech!

Among the many product names here you can find asynchronous motors of any power, any purpose and in various price categories. The delivery of goods is active in various ways throughout the territory of the Russian Federation and beyond!

Hurry up to purchase the highest quality equipment that will serve you for many years, along with Salutech!