3 phase induction motor in detail with construction and working in detail

A 3 phase induction motor is a type of electric motor that operates on a three-phase alternating current power supply. It is commonly used in industrial applications due to its efficiency and reliability. Construction: A 3 phase induction motor consists of a stator (stationary part) and a rotor (rotating part). The stator is made up of three sets of windings that are spaced 120 degrees apart. The rotor is typically made of a squirrel cage design, which consists of aluminum or copper bars connected by short-circuited rings. Working: When the three-phase current is applied to the stator windings, a rotating magnetic field is produced. This magnetic field induces currents in the rotor bars, which in turn creates a torque that causes the rotor to rotate. Example: A common example of a 3 phase induction motor is the one used in a water pump. The motor converts electrical energy into mechanical energy to drive the pump and move water. Fact: 3 phase induction motors are known for their high efficiency, typically ranging from 85% to 95%. Analogy: You can think of a 3 phase induction motor like a treadmill at the gym. The motor provides the power to make the treadmill belt move, just like how the rotating magnetic field in the motor causes the rotor to rotate.