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Harmonic Filter testing and simulation

Dylan Wilding

Hoping to gain some advice and insight into harmonic filter testing and simulation.

I'm hoping to perform a practical lab on the effects on power quality on a piece of equipment (preferably a VSD) with and without a harmonic filter. The aim being to tie it back to overall plant power consumption and how over a certain time period due to the increase in efficiency it will pay for itself in X time period. 

Could anyone recommend the following:

A computer software to simulate / model this such as a manufacturers software. I already have MATLAB to use however an actual manufacture software with product data would be really useful

A small practical rig that could be used to perform the actual practical lab. My current college is in the process of completing a lab refurbishment so i should be ok to do it at the college however i would like some sort of back up if possible. 

Regards,

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    be aware that most power factor correction for all but smallest of rigs is active these days. (https://www.ti.com/lit/an/slua144/slua144.pdf explains the idea only think bigger.)

    Are you wanting to teach analogue filter design or power factor correction ? - both are valid but are not the same these days.
    The problem with VSDs is not just harmonics but also the PWM frequency used to fake the sinewave. (https://www.acdrivesguide.com/vsd-control-theory )

    In terms of experiment,  current clamps are cheap and it is easy to use a small mains transformer to step the voltage down to something that can safely be scoped, or captured as 'audio' on a PC soundcard.

    This is a bit terse, so if this makes no sense, then please come back and I can try and clarify in slower time.
    Mike

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  • 0

    be aware that most power factor correction for all but smallest of rigs is active these days. (https://www.ti.com/lit/an/slua144/slua144.pdf explains the idea only think bigger.)

    Are you wanting to teach analogue filter design or power factor correction ? - both are valid but are not the same these days.
    The problem with VSDs is not just harmonics but also the PWM frequency used to fake the sinewave. (https://www.acdrivesguide.com/vsd-control-theory )

    In terms of experiment,  current clamps are cheap and it is easy to use a small mains transformer to step the voltage down to something that can safely be scoped, or captured as 'audio' on a PC soundcard.

    This is a bit terse, so if this makes no sense, then please come back and I can try and clarify in slower time.
    Mike

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