Electric Machines: Theory, Operation, Applications, Adjustment, and ControlIntended for courses in electrical machinery in which engineering practice is emphasized, this text provides coverage of AC and DC machines and stresses industry requirements and the NEMA standards of professional engineers. Traditional theories and concepts of mechanical force are also discussed. |
Other editions - View all
Electric Machines: Theory, Operating Applications, and Controls, 2/e Hubert No preview available - 2002 |
Common terms and phrases
3-phase 60-Hz transformer air gap apparent power autotransformer bank buck-boost transformer causes coil component connected copper losses core loss curve Determine developed torque eddy-current losses efficiency electrical equation equivalent circuit equivalent impedance exciting current flux density four-pole high side high-side hysteresis ideal transformer induction motor induction-motor lb-ft leakage flux leakage reactance Lenz's law line current locked rotor locked-rotor torque low side low-side machine magnetic circuit magnetizing current magnetizing reactance mutual flux nameplate no-load open-circuit test operating at rated output voltage parallel parameters per-unit percent rated phasor diagram poles power factor power-factor lagging r/min R₁ R₂ rated frequency rated load rated voltage rheostat right-hand rule rotating flux rotor current secondary shaft load shown in Figure sinusoidal Sketch slip squirrel-cage squirrel-cage rotors stator stepper motor Substituting Eq synchronous speed turns ratio values Vline voltage regulation Vrated windage winding wye-connected X₁ Zbase Zload