Category: 2. Induction Motor

  • VFD Basics IGBT inverter

    Variable Frequency Drives Explained – VFD Basics IGBT inverter If you work in HVAC, then you need to check out the inverter compressors by Danfoss, who have kindly sponsored this topic. When used in combination with variable speed technology, like the VFDs we’re going to cover in this article, they make your entire HVAC unit…

  • Pulley Belt Calculations

    As shown in the image below, an induction motor is connected via a belt to drive two pulleys which will move centrifugal fan. This is this fairly typical of what you might find to in an Air Handling Unit or AHU. You’d also have this set up on some pumps and also some conveyor belts. The two things…

  • Star-Delta Starter in Induction Motor

    A star-delta starter is a very common type of starter and is widely used compared to other types of induction motor starters. The star-delta starter is used for the squirrel cage induction motor that is designed to run on delta-connected stator winding. The connection diagram of a start-delta starter for a three-phase induction motor is shown in the figure…

  • Shaded Pole Motor

    A shaded pole motor or shaded pole induction motor is a type of single-phase induction motor usually used for the lower ratings. It is a simply self-starting single-phase induction motor with a pole shaded by a copper ring. The copper ring is known as the shaded ring. The shaded ring acts as an auxiliary winding (secondary winding). This motor…

  • Why Single Phase Induction Motor is not Self Starting?

    It has only one phase still it makes the rotor to rotate, so it is quite interesting. Before that, we need to know why a single phase induction motor is not a self-starting motor and how we overcome the problem. We know that the AC supply is a sinusoidal wave and it produces a pulsating…

  • Why is 3 Phase Induction Motor Self Starting?

    In a three phase system, there are three single phase lines with a 120° phase difference. So the rotating magnetic field has the same phase difference which will make the rotor to move. If we consider three phases a, b, and c when phase a gets magnetized, the rotor will move towards the phase a…

  • Types of Induction Motors

    The types of induction motors can be classified depending on whether they are a single phase or three phase induction motor. Single Phase Induction Motor The types of single phase induction motors include: Split Phase Induction Motor Capacitor Start Induction Motor Capacitor Start and Capacitor Run Induction Motor Shaded Pole Induction Motor Three Phase Induction…

  • Working Principle of Induction Motor

    We need to give double excitation to make a DC motor to rotate. In the DC motor, we give one supply to the stator and another to the rotor through brush arrangement. But in induction motor, we give only one supply, so it is interesting to know how an induction motor works. It is simple,…

  • What is an Induction Motor?

    An induction motor (also known as an asynchronous motor) is a commonly used AC electric motor. In an induction motor, the electric current in the rotor needed to produce torque is obtained via electromagnetic induction from the rotating magnetic field of the stator winding. The rotor of an induction motor can be a squirrel cage…