Aninduction motororasynchronous motoris anAC electric motorin which theelectric currentin therotorneeded to produce torque is obtained byelectromagnetic inductionfrom themagnetic fieldof thestatorwinding.An induction motor can therefore be made without electrical connections to the rotor.An induction motor's rotor can be eitherwound typeorsquirrel-cage type. Three-phasesquirrel-cageinduction motors are widely used as industrial drives because they are self-starting, reliable and economical. Single-phase induction motors are used extensively for smaller loads, such as household appliances like fans. Although traditionally used in fixed-speed service, induction motors are increasingly being used withvariable-frequency drives(VFDs) in variable-speed service. VFDs offer especially important energy savings opportunities for existing and prospective induction motors in variable-torquecentrifugalfan, pump and compressor load applications. Squirrel cage induction motors are very widely used in both fixed-speed andvariable-frequency drive(VFD) applications.+ Read More