topic Re: Varjable frequency in LabVIEW Electrical Power Toolkit

Varjable frequency

Angelo.Furinghetti — Fri, 22 Jan 2016 07:06:52 GMT

Can I use the electrical power suite to measure the output line of a pwm inverter feeding an AC motor (0 - 100Hz) ?

Any suggestion ?

Many thanks in advance

Angelo

Re: Varjable frequency

James_McN — Fri, 22 Jan 2016 16:33:07 GMT

First question is what you want to measure?

If you want to measure power quality to IEC 61000-4-30 then you should know that the FPGA resampler only operates on 50 or 60Hz networks and this wont work.

It looks like it is the same for the host-based resampler as well (you still must specify a 50 or 60Hz system).

The basic measurements palette thought looks like it maybe a bit more flexible though. For example, the harmonics palette has a resampling VI that takes external trigger times and so doesn't seem to depend on the system frequency so much.

Rif.: Varjable frequency

Angelo.Furinghetti — Fri, 22 Jan 2016 16:48:47 GMT

Thank James,
Downstream the inverter
I would measure :
Power active and inductive
Phhase lag
Current, voltage
energy
Frequency

Of course I can measure upstream the converter, but I have to consider inverter efficiency

Waiting for any comments
Regards
Angelo

Re: Varjable frequency

veichch — Thu, 18 Aug 2016 08:22:49 GMT

I think it should be ok in theory. it also depend on the PWM inverter you choose. which PWM inverter you choose? schinder or semens veichi?