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 action angle applied approximately Assume bank calculations called causes characteristic circuit closed coil component conductor connected constant core core loss corresponding curve Determine developed torque direction drop effect efficiency electrical equal equation equivalent equivalent circuit EXAMPLE exciting current expressed flux flux density force frequency Hence hysteresis ideal impedance increase indicated induction motor input lagging leakage flux load locked-rotor torque loop losses machine magnetic circuit magnetic field maximum mechanical no-load Note obtained occur operating output parallel parameters per-unit percent phase phasor diagram poles power factor primary r/min rated rated load rated voltage reactance referred regulation relative reluctance representative resistance respectively resultant rotating rotor secondary shaft shown in Figure shows single-phase Sketch slip Solution speed starting stator Substituting supply switch terminals tion torque transformer values winding window