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???
08/20/08 12:47
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#157572 - you are going to burn the motor
Responding to: ???'s previous message
I am working on a 3-phase inverter
if you do not drive the motor with (something approximating) a sinewave you will, eventually, see blue or grey smoke from the motor. Since I would never do such a thing, I can only guess that what you are seeing is the motors reaction to being fed squarewaves.

Erik

List of 12 messages in thread
TopicAuthorDate
3-phase Inverter IGBT phase waveform            01/01/70 00:00      
   you are going to burn the motor            01/01/70 00:00      
      Its a sine PWM            01/01/70 00:00      
      ...or the IGBTs!            01/01/70 00:00      
   i had same problem on a Hitachi 48kw inverter            01/01/70 00:00      
   Gate Drive            01/01/70 00:00      
      The driver cktry and the waveforms            01/01/70 00:00      
         Bootstrap capacitors problems            01/01/70 00:00      
         Some hints            01/01/70 00:00      
            another interesting waveform            01/01/70 00:00      
               No, no....            01/01/70 00:00      
   Voltage rating of bootstrap capacitor            01/01/70 00:00      

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