Pdf on induction motor

At what speed will the induction motor run? Can the induction motor run at the synchronous spee why? If rotor runs at the synchronous spee then it will appear stationary to the rotating magnetic field and the rotating magnetic field will not cut the rotor.

So, no induced current will flow in the . Induction Motor Equivalent Circuit.

Torque and Power Characteristics.

Determination of Motor Constants.

IM), has been describe when the three -phase balanced winding of the stator is supplied with three-phase balanced voltage. The construction of the stator and two types of rotor − squirrel cage and . The synchronous electrical generator (also called alternator) belongs to the family of electric rotating machines. What is common to all the members of this fam- ily is that . Simple and rugged design, low-cost, low maintenance and direct connec- tion to an AC power source are the main advantages of. Abstract The chapter deals with general description of an induction motor fol- lowed by different faults.

First, construction of induction motor has been discussed.

Faults like rotor broken bar, mass unbalance, stator faults, single phasing, crawling, bearing faults, etc. After studying this unit, the student will be able to. The characteristics of single phase induction motors are identical to 3-phase induction motors except that single phase induction motor has no inherent starting torque and some special ar- rangements have to be made for making it self starting.

It follows that during starting period the single phase . Performance characteristics, effect of rotor resistance on speed torque characteristics . The relation between the rotor input, rotor copper loss and rotor output (gross) are derived next . Two (Star-Delta and Auto-transformer ) types of starters used for Squirrel cage. Manufactured with different configurations regarding mounting, cooling method and degree of protection, they adapt to different operating and environmental conditions.

Motors with IEC frame sizes 2to 5may be manufactured with . Abstract-This paper presents an optimal design method to optimize three-phase induction motor in manufacturing process. The optimally designed motor is compared with an existing motor having the same ratings. The Genetic Algorithm is used for optimization and three objective functions namely torque, efficiency, and . The AC currents that result in the rotor of an induction motor are the result of induction (Faraday's law).

Wound rotor motors are an extremely versatile breed of induction motors. An induction motor is also classified as an asynchronous motor due to the fact that its operating speed is slightly less than synchronous speed. A machine is classified as asynchronous machine if its operating speed is .