These basic parts work together to ensure the smooth performance of this highly efficient electrical device. As shown in the diagram above the parts 1 2 and 8 makes up the stator of the three phase induction motor.
The three phase squirrel cage induction motors are classified into 6 different standard types based on their electrical characteristics.
Three phase squirrel cage induction motor diagram.
The general construction of the slots in the rotor is such that the rotor bars are placed close to the surface so as to reduce the. Figure 1 shows the characteristics of the current and torque for a standard squirrel cage induction motor. Therefore the induction motor is the most important motor among all other types of motor. Almost 80 of the motor is a three phase induction motor among all motors used in industries. This current which usually lasts only a second or two can be up to seven times the motor s full load current. Wiring diagram for squirrel cage motor wiring diagram for squirrel cage motor single phase induction motors ac motors electronics textbook spt 3 wiring diagram data schematic diagram 1 laboratory manual electrical machine ii laboratory.
For the motor to work as a generator instead of a motor the rotor must be spun faster than its stator s synchronous speed. 3 phase squirrel cage induction motor is one of the most popular types of ac electric motor which achieve the electromechanical energy conversion through stator and squirrel cage rotor by electromagnetic induction. The diagram below shows all the basic parts that makes up an ac induction motor. That s why it s called squirrel cage induction motor. Normally we use the motors in industrial drives because they are rugged reliable and economical. When a three phase squirrel cage induction motor is connected directly to the supply it will draw a large starting current.
Three phase squirrel cage induction motors can also be used as generators. This will cause the motor to generate. The slots are not made parallel to each other but are bit skewed skewing is not shown in the figure of squirrel cage rotor besides as the skewing prevents magnetic locking of stator and rotor teeth and makes the working of the motor more smooth and quieter. The induction motor especially three phase induction motors are widely used ac motor to produce mechanical power in industrial applications. The squirrel cage rotor consists of aluminum brass or copper bars copper bras rotor is shown in the figure beside. 1 motor frame.
The squirrel cage rotor has relatively low resistance reactance. Parts of a three phase induction motor photo credit. A 3 phase squirrel cage induction motor is a type of three phase induction motor which functions based on the principle of electromagnetism. They are differentiated in the below table. It is called a squirrel cage motor because the rotor inside of it known as a squirrel cage rotor looks like a squirrel cage. The rotor of the squirrel cage three phase induction motor is cylindrical and have slots on its periphery.
This rotor is a cylinder of steel laminations with highly conductive metal typically aluminum or copper. For this to work the motor must see a reactive load and either be connected to a grid supply or an arrangement of capacitors to provide excitation current. It can be seen that the current is almost.
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