SubtransientSalientPoleSimplifiedDirectAxis : Documentation diagram
Created: 03/30/2012 08:33:54 PM
Modified: 04/18/2012 03:08:06 PM
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The Subtransient Salient Pole Simplified Direct Axis Type is modeled using one of the concrete child classes of the SynchronousMachineDetailed class. If the SynchronousMachineTimeConstantReactance class is used, .modelType = subtransientSimplifiedDirectAxis and .rotorKind = salientPole. It is a simplified version of a Subtransient Salient Pole Type with no damper circuit on d-axis. This simplification contributes to a reduction in computational effort by reducing the order of the differential equation system. The q-axis has only one equivalent rotor winding. Magnetic coupling between the direct and quadrature axes is ignored.<br /></p><p><b>Parameter Notes:</b><br /></p><p><ol><li>The effects of speed variation are neglected. </li><br /></p><p><li>No armature resistance.</li><br /></p><p><li>No saturation effects.</li><br /></p><p><li>No subtransient saliency.</li><br /></p><p><li>Direct Axis with field circuit only, no equivalent damper circuit. Approximation: <b>X'd</b> = <b>X''d</b>.</li><br /></p><p><li>Quadrature Axis with only one equivalent damper circuit, which is labeled as subtransient (<b>X''q</b>), <b>X''q</b> =<b>X'q</b>.</li><br /></p><p><li>For generators and motors the following input parameters are needed: <b>Xd</b>, <b>X'd</b>, <b>T'do </b>and<b> Xq</b>, <b>X''q</b>, <b>T''qo</b>.</li><br /></p><p></ol><br /></p>