## Analysis of electric machinery |

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### Contents

Theory of DirectCurrent Machines | 67 |

ReferenceFrame Theory | 133 |

Theory of Symmetrical Induction Machines | 164 |

Copyright | |

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### Common terms and phrases

3-phase fault air-gap MMF analysis angular velocity approximate arbitrary reference frame armature current axis balanced sets brushless dc brushless dc motor calculated capacitor Chap coesk coil constant converter coupling field damper windings dc machine denote drive system Dynamic performance eigenvalues electric transients neglected electromagnetic torque equivalent circuit expressed field current field winding Figure flux linkages free acceleration frequency full-converter given Hence hydro turbine induction motor input torque inverter linear linkages per second load torque machine variables magnetic open-circuited parameters phase delay phasor positive power system rad/s reactances rotating reference frame rotor machine rotor speed rotor windings short-circuit shown in Fig simulation single-phase sinusoidal source voltages stator currents stator electric transients stator voltages stator windings steady state operation steam turbine Substituting symmetrical components symmetrical induction machine synchronous machine synchronous speed synchronously rotating reference terminal voltage thyristor torque-speed characteristics transfer function transformation voltage equations zero