inverter whine
inverter whine
(OP)
I am looking at a three phase inverter driven motor 7.5kw that is reported to be whining more than usual. i can hear a whine that sounds specifically like a standard inverter motor whine. However can think of no reason why the whining would have got worse. Have inspected the connections and tested the motor with a megger and all looks ok. There is an inline contactor between drive output and motor and contacts measure ok with a multimeter. other than the noise there is no other reason to quetion the motor/ drive.
I have no reason to susupect that the switching frequency would have changed
any ideas?
I have no reason to susupect that the switching frequency would have changed
any ideas?





RE: inverter whine
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: inverter whine
I would change the carrier freq and see if the problem noise follows suit.
RE: inverter whine
Gunnar Englund
www.gke.org
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: inverter whine
One source of increasing noise is loose stator laminations.
RE: inverter whine