Leading Power Factors in VFD Data Sheet

[ThePunisher]

I was wondering as to why a table on a VFD datasheet is specified with leading power factors (as high as 0.95 leading). These leading P.F.s are specified against certain % of full load speeds and equivalent losses (in kW) are also specified along with them. I initially thought these were typo errors but I doubt that.

I just need a brief explanation on how to interpret this table and understand some technical reason as I thought if I operate a motor with VFDs, regardless of speed, the PF should be lagging, not leading.

 

[DRWeig]

Hi Punisher,

Can you post the table, or a link to it?

Best to you,

Goober Dave

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[jraef]

A drive using Active Front End (AFE) or a Fundamental Front End (FFE) technology can present leading PF to the supply in the right circumstances.

"Will work for (the memory of) salami"