azotic wrote:
"Ignoramus29895" wrote in message
...
On 2010-01-20, Wes wrote:
Ignoramus29895 wrote:

I am pretty sure that you cannot put capacitors on the output of a
VFD.

Correct, VFD PWM output is designed for inductive load usually a V/F
ratio based on the rpm your vfd is set at. Capacitors placed on
the output will change the pulse width and could cause the motor
to overheat at less than 60Hz settings. In addition you will be
creating a LC circuit with its own set of problems that VFD's
don't like. You might end up with a multi kilowatt AM transmitter
of sorts.

But you can put inductance in series with the
output to dampen the harmonics. Don't know the
specifics concerning Iggy's VFD, but I've seen
it done on pump station VFD's in a residential
neighborhood.