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STEADYSTATE BALANCED SYNCHRONOUS OPERATION
THREEPHASE SHORTCIRCUIT CURRENT
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approximate armature current armature flux linkages armature resistance average torque axes axis Chapter coils component of armature component of current component of torque components of id current ia currents and flux d-c component decay decrement factors direct direct-axis effect equa equations 32 even-harmonic expression field current field excitation field flux linkage field resistance field voltage Fourier series fundamental-frequency component Gabriel Kron given by equation harmonic id and iq impedance LINE TO NEUTRAL line-to-neutral load magnitude maximum mutual inductance neglected obtain open-circuit ponents quadrature quadrature-axis quantities radians reactive power relations rotor circuits rotor currents rotor excitation rotor i2r loss rotor resistances saliency salient-pole machine self-inductance short-circuit current short-circuit torque stator Substituting equation subtransient symmetrical components synchronous machine terminal voltage three-phase short circuit tion transient reactance unidirectional components vector diagram volt-amperes voltages and currents winding Xafd Xd(p xdxq xq(p zero zero-phase-sequence