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Step-Up Transformer

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Franko

Franko

Mechanical
May 30, 2000
75
We used a step-up voltage transformer for a test run with a variable-speed 60 Hz motor. There was an odd subsynchronous frequency near 9 Hz found in the converter output current signal. Could the frequency come from the step-up transformer?
 
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Can you explain the circuit please, what are the AC drive and motor voltages, what is the vector arrangement of the transformer?
 
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