Question
Download Solution PDFFor maximum current during 'Slip Test' on a synchronous machine, the armature mmf aligns along -
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Slip test:
Direct and quadrature axis reactance can be determined by this test.
During this test, the synchronous machine is driven by the separate prime mover at slightly different from synchronous speed.
The field winding is open-circuited and rated frequency and reduced voltage is applied across the terminal.
Under these conditions, the relative velocity between the field pole and the rotating armature m.m.f wave is equal to the difference between synchronous speed and rotor speed.
\({X_q} = \frac{{minimum\;armature\;terminal\;voltage\;per\;phase}}{{maximum\;armature\;current\;per\;phase}}\)
Explanation:
For maximum current, during slip test on a Synchronous machine, the armature MMF aligns along the q-axis.
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