Electric Machines and Drives |
Common terms and phrases
air gap angle applied approximately assumed average axis circuit of Fig coil commutator component condition conductor connected considered constant core Determine developed device direct distribution drive effect electric energy equal equivalent circuit example expressed field current Figure flux density flux linkage force frequency give given harmonic ideal ignored increase inductance induction motor inverter iron length limited linear load loop loss machine magnetic magnetic field magnitude material maximum mechanical motor operating output path phase phasor poles position power factor Problem produce r/min rad/s range rated ratio reduced referred relation represented resistance rotating rotor Section seen shown in Fig shows side sinusoidal space speed stator current steady-state supply Suppose switch synchronous terminals three-phase torque transformer transient turns typical unit usually vector voltage winding zero