VFD heat dissipation
VFD heat dissipation
(OP)
Hi to all,
I am no electrical guy so I need your help.
We have pumps with 14MW motor power each (9 nos) and this are VFD controlled. How much would be the heat dissipation on the VFD controller for this size? Any rough estimate or calculation would be much appreciated. As I need to determine the cooling required for this.
Thanks!
I am no electrical guy so I need your help.
We have pumps with 14MW motor power each (9 nos) and this are VFD controlled. How much would be the heat dissipation on the VFD controller for this size? Any rough estimate or calculation would be much appreciated. As I need to determine the cooling required for this.
Thanks!





RE: VFD heat dissipation
to get the head dissipation, you should know the VFD losses from its datasheet, or (1-eta)*rated power ((~14 MW).
I guess a figure of eta around 98% should be a high level estimate but actual eta is best needed as it is a high power
if so, a heating load of 14*0.02 = 280 kW per VFD.
RE: VFD heat dissipation
RE: VFD heat dissipation
For a large drive like this, you need detailed engineering data for this specific drive - not something from an Internet forum.
RE: VFD heat dissipation
I think your saying I am no electrical guy so I need your help. says you have no business calculating this, if reason is more than just your idle curiousity.
www.KilroyWasHere<dot>com
RE: VFD heat dissipation
That said, if the VFD is going to include Line and/or Load reactors and/or sine wave filters and/or EMI/CE filters, all of those devices reject additional heat.
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