![single phase motor winding single phase motor winding](http://patentimages.storage.googleapis.com/US6255755B1/US06255755-20010703-D00000.png)
Squirrel-cage rotor construction, showing only the center three laminations
![single phase motor winding single phase motor winding](https://img4172.weyesimg.com/uploads/zhigaomotor.com/images/16058430041891.jpg)
Squirrel-cage induction motors are very widely used in both fixed-speed and variable-frequency drive applications. VFDs offer especially important energy savings opportunities for existing and prospective induction motors in variable-torque centrifugal fan, pump and compressor load applications. Although traditionally used in fixed-speed service, induction motors are increasingly being used with variable-frequency drives (VFD) in variable-speed service. Single-phase induction motors are used extensively for smaller loads, such as household appliances like fans. Three-phase squirrel-cage induction motors are widely used as industrial drives because they are self-starting, reliable and economical. An induction motor's rotor can be either wound type or squirrel-cage type. An induction motor can therefore be made without electrical connections to the rotor. Many such motors have a symmetric armature, and the frame may be reversed to place the electrical connection box (not shown) on the opposite side.Īn induction motor or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. We had also studied what are the types of single-phase induction motor, Working, types of starting methods, advantages, disadvantages, and applications of different types of single-phase induction motor.Cutaway view through stator of TEFC induction motor, showing rotor with internal air circulation vanes. This RMF is developed by certain starting methods which enables the motor to self-start by itself. Hence, we had an overview of a one-phase IM, it is a machine that works on the principle of electromagnetic induction.
![single phase motor winding single phase motor winding](https://3.imimg.com/data3/PH/LW/MY-10133675/23-500x500.jpg)
The required motors are selected depending upon required staring and running torque, starting and running currents drawn from the supply and duty cycle. Capacitor Start capacitor-run Induction motor.These are classified into different types depending upon the different starting methods. In this article, we shall discuss what are the types, construction, working, starting methods, disadvantages, advantages, and applications. The Three-phase IM can develop a Rotating magnetic field which makes it possible to self-start. The disadvantage of one-phase is, it cannot self-start while the three-phase motor can self-start. The multi-phase supply produced much better advantages than single-phase. Later investigations have been conducted to work these type of motors under two-phase supply. This was made practically possible by Westinghouse.
![single phase motor winding single phase motor winding](https://pengky.cn/zz-generator-principle-and-structure/06-ac-motor-winding/12-ac-motor-winding.jpg)
Earlier it was made to run under 60 HZ power supply in 1893. The steps began for the introduction of induction motor in the year 1892.