Information about the AC Electric Motor

Conversion of electrical energy to mechanical energy through the electromagnetic means was first shown by a British scientist Michael Faraday in the year 1821. Working on this electromagnetic principle of producing mechanical energy through the interaction of the magnetic fields with the current carrying conductors lead to the invention of the first electrical motor in 1832 by a British scientist named William Sturgeon in the year 1832. By 1882 Nikola Tesla had discovered the correct use of rotating magnetic field to operate machines. The electric motors are further subdivided as Alternating current (AC) type and Direct Current (DC) types.

Today the AC motors have turned out to be the most common and industrial motor being used anywhere in the world. Having the key advantages of reliable operation, low cost, simple design, easily found replacements and having a variety of mounting styles, AC motors have become very popular and are widely used. They are designed such that it has a series of windings in the exterior and a rotating section inside. The changing electrical field caused by the AC line voltage will make the rotor turn around the axis of the motor. Here the speed of the motor will depend on the fixed number of the windings, frequency of the AC line voltage and the torque loading on the motor. A wide use of these AC electrical motors has made the search for replacements and spares an easy task.

These motors also have a few disadvantages like having an expensive speed control, its inability to operate at low speeds and the poor positioning control. The electronics required for an AC motor are more expensive as compared with the DC Motors. But for applications which are larger than 10 Horsepower these AC motors are usually more cost effective than the DC Motors. The ACmotors are the most preferred for the fixed speed applications in the commercial and domestic applications. They are found to have wide application in stationary power tools like the air conditioners, washers, dryers, fans, blowers and vacuum cleaners.

Electric motors are crucial to production. So it is important that service and maintenance is working professional. To get top service and great results in this industry, you must first learn the "ins and out" of the service business especially for electro-mechanical engineering.

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