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Thread: VFD upgrade

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  1. 22-10-2014 #6
    Jonathan's Avatar
    Lives in Leicester (Home) or Nottingham University (2nd Home), United Kingdom.
    Jonathan
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    Just to be clear, vector control gets rated torque down to low (zero with an encoder) speed - it doesn't increase the torque above rated at low speed, as that would exceed the ratings of the motor. This is important since power is the product of torque and speed, so with a constant torque vs speed characteristic the power is proportional to speed - so you only get rated power at rated speed. Or half rated power at half speed... etc
    Last edited by Jonathan; 22-10-2014 at 11:05 AM.
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