The problem of whether the frequency conversion can start at low torque
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The workshop added frequency conversion control to a certain motor (a certain hybrid equipment), but after adding frequency conversion, the equipment could not start. According to the electrician, the starting torque will be reduced after using the frequency converter. What is going on? How to solve it? This post was last edited by DAC Junlintianxia on 2008-11-17 22:18 ]
I have also seen this phenomenon. After installing a frequency converter on a liquefied gas pump, the pump also failed to start when pumping water (it tripped as soon as it started). This situation is probably caused by the small size of the frequency converter.
Adding variable frequency control to the motor can save energy and reduce starting resistance torque, so the above situation is possible. The envisaged plan is: 1. Start without load (if the operation is allowed) 2. Switch to variable frequency control after starting from power frequency 3. Set the starting frequency higher to overcome the static resistance torque
Agree with 3#! ! ! ! ! ! ! ! ! !