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VFD Feedding a Power transformer
2

VFD Feedding a Power transformer

VFD Feedding a Power transformer

(OP)
Dear All ,

We are developping a motor control test center project, and some of our collegues are suggesting to use a VFD to fed a power transformer in order to change the transformer´s voltage output  with out change the frecuency, this is intendded for load and  no load test.

Any one with similar experience ? pros and conts??

Thanks for the Inputs

Petronila

RE: VFD Feedding a Power transformer

Hey Petronila.
As I remember, Gunnar recommend you several things in the Electric motors forum.
Why you ask again???
Regards.
Slava

RE: VFD Feedding a Power transformer

(OP)
Yes Slavag,

But the electric Motor forum is for motors and I would like to know more about the possible problems with the transformer.

Thanks
Petronila
   

RE: VFD Feedding a Power transformer

Quote:

suggesting to use a VFD to fed a power transformer in order to change the transformer´s voltage output  with out change the frecuency
Wouldn't the VFD change the frequency not the voltage?

RE: VFD Feedding a Power transformer

VFD does both, with limitations.

RE: VFD Feedding a Power transformer

(OP)
Thanks Edison,

Culd you sayd me you`r shop name?

Regards

Petronila

RE: VFD Feedding a Power transformer

petronila

Please visit www.edison.co.in.

* I would go green if only I were not yellow *

RE: VFD Feedding a Power transformer

I would not trust test results from a VFD supply unless signifiicant filtering was used to almost eliminate harmonics.  One of the purposes of the load and no load tests on a transformer is to measure the losses and impedances accurately.  Harmonics from the VFD's may increase losses in the transformer and can make it difficult to get an accurate KW reading.

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