VFD heat dissippation
VFD heat dissippation
(OP)
I am working with VFD. The heat loss from VFD is 200KW.plus other heat loss. The total heat loss is about 230Kw. Does it mean the HVAC has to sized to be larger than 230Kw?
Thanks
Thanks






RE: VFD heat dissippation
RE: VFD heat dissippation
RE: VFD heat dissippation
RE: VFD heat dissippation
I would think you save a bundle by just turning the air over instead of mechanically moving the heat. Yuck.
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: VFD heat dissippation
RE: VFD heat dissippation
8% losses in the VFD alone? That seems a poor dive efficiency to me. In fact, even if it included the motor losses I think it would be a lot. Is that the data from the manufacturer? Is the drive system continuously running?
RE: VFD heat dissippation
RE: VFD heat dissippation
I am having a problem picturing a truckload of transformers gathered around some relatively small VFD.
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: VFD heat dissippation
The one's I've seen use one special multi-winding transformer with multiple secondary windings.
RE: VFD heat dissippation
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: VFD heat dissippation
Phase shifting transformer paper
And then to see how this translates to the real world of MV drives, go to page 9 of this brochure.
Robicon perfect harmony drive brochure
PS: They are not exactly "little" drives we are talking about here.
RE: VFD heat dissippation
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com