Introduction of Electric Motor

        Electric Motor are basically being in use to operate the generators, Blowers, compressors, pumps, and Fans through converting the electrical energy in the form of mechanical energy for the machines. In the present age application of the electric motors is not limited to the few industrial functions only but in fact electric motors are in almost in all areas of the life. In the industrial processes, agricultural functions and in our houses electric motors are currently working.

Basic Principles of Electric Motor

        There are several simple but major scientific principals according to which electric motors operates and do functions. Basically electric motors works when current given to the motor develop magnetic field. While in response to the medical field electric motor creates electric current during passing through the conductors. In the electric motors operations there are two main types of magnetic poles that are like magnetic poles that has quality of repelling and the un-like (second type magnetic Poles) attract the other sides of the magnetic poles.

        Here image (see figure 1) of magnetic field is presented below that elaborate the functions of conductor and both magnetic poles. In the electric motor operations we can easily identify the speed of electric motor, and its horsepower through the calculations. Dividing the frequency by the number of poles can present the overall speed of the electric motor in the operations.

Classification of Electric Motor

        Electric motors can be further classified in the two major types Direct Current Motors (DC motors) and Alternating Current Motors (AC motors). Conductors in the Direct Current Motors placed between the both magnetic poles help in transmitting the current between the armature and power source. While in the direct current motors electricity passing through the conductors create more magnetic field in original forces lines of the motor and works as the electromagnet. The forces on the various poles of the magnetic fields determine in which direction and axis of rotation the wire loop conductor and other parts of the DC motor will move and rotate.

        The second major type of the electric motor is alternating current motor that has some functions quite opposite to the Direct current motor. For instance, DC motor can directly run to the rotor but alternating current motor cannot. Opposite to this AC motors flows and works into the stators. How the AC motors functions and how AC motors response to the magnetic fields is presented below in the image:

        In the above-mentioned figure 2 AC motor functioning is presented according to which stators in the alternating current motors (AC motors) generates the electric current in the artificial manner with the purpose of creating the magnetic field from the passing current. In the Alternating current motors rotor gets directions and rotates when there comes interaction of the both magnetic fields. In the above image magnetic field is shown just above and below the rotor.

AC Induction Motor Parts

        There are almost more than 20 parts of the induction motor has been shown through the help of diagram. There are some major parts and also some minor parts of the induction motor. The major parts of the induction motor that include shaft, output shaft, Rotor, wound stator and end shield. There are also some minor parts that include Grease Outlet, bearing, insulation, OR seal, and fan cover etc.

        This is located on every electric motor and it contains all the basic information about the electric motor. The information on the electric motor is according to the NEMA standards. On the number plate of the eclectic motor there is information about the voltages on which this motor will operate. Information about the input frequency on which the motor is operating. On the electric motor there is Information about the phases, the current rating of the electric motor, and information about the power factor, information about the horsepower of the motor with full load speed, efficiency percentage and with efficiency label. There is also information about the frame, enclosure and also the bearing and grease information.

P&ID symbols

There is information about the P and ID symbols that includes motor, generator, AC motor, gear, AC generator, Motor generator, Step motor and many more.