## A.C. machines: electromagnetics and design |

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### Contents

ELECTROMAGNETIC RELATIONSHIPS | 1 |

ANALYSIS AND DESIGN OF A C WINDINGS | 21 |

MMFS AND EXCITATION REQUIREMENTS | 43 |

Copyright | |

5 other sections not shown

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### Common terms and phrases

3-phase winding airgap flux Alan Williamson angular armature Belt leakage cage rotor cage winding calculated coil pitch coil-sides conductor constant copper loss core current density d-axis depth eddy currents Electrical Machines electromagnetic end-ring equation equivalent circuit Fgap field current flux barriers flux density flux distribution flux linkage flux per pole fundamental component fundamental flux geometry give given harmonic Hence impedance increases induction motor leakage flux leakage inductance leakage reactance machine design magnetic circuit magnetic loading magnetic saturation magnetising current magnetising mmf magnetising reactance magnetomotive force mmf required mutual inductance number of slots number of turns open-circuit output parameters per-unit permeance phase belt pole-pair pole-pitch produced q-axis ratio resistance rotor windings Section self-inductance short-circuit shown in Fig skew skin effect slot pitch stator and rotor stator current stator mmf stator phase stator winding sub-transient synchronous machines three-phase tooth torque transformer transient voltage