That might be it but I'm not so sure since the manual is not very clear about it. The carrier (switching) frequency range is 2kHz - 8kHz where as for line (or motor frequency) I have to choose either 50 or 60 Hz. So, When I setup the VFD, I have been entering the motor frequency as 60Hz(my lamp...
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I cannot share more about it since this technology is patent pending, all we use is a current sink (MOSFET and sense resistor) to control each LED stage. LED stage consists of number of LEDs depending up on our requirement, voltage drop and i/p voltage.
As in the frequency...
Is there a relationship between i/p and o/p voltage of a VFD? With the one I have got, for 230V input (single phase), the o/p voltage (three phase) across a line(any) to GND is around 160Vrms where as the voltage between lines is only 20-30Vrms. Is this how it is suppose work (I guess not from...
Skogsgurra, I think the voltage across lines (U, V and W) within themselves was same to what I saw between a line and GND. I'll double check on that tomorrow.
I don't get why changing the frequency is not changing the RMS output am I doing something wrong?
May I know what is a scalar control U/f...
So far this is what I have got.
Around 200V AC i/p was applied to a VFD to get 120V o/p(across a L and GND).
The moment I apply voltage to a non-running VFD it generates a surge output and this surge is enough to a flick a lamp.
When the lamp was powered through a VFD, I have tried changing...
Thank you guys for your response.
Skogsgurra, I thought I would give it a try and tell him that it won't work too. But, when I talked to my colleagues(30+ years experience) they said they did this last spring and were able to control the brightness of the lamp using the same VFD I have with me...
Hello All,
Does anyone has any experience using a VFD as a light dimmer? I am a recent graduate and I have just started working at this company not too long ago, my boss wants me to take a ATV12H018M2 (240V Single Phase) and use it as a dimmer. I know there are triac, sine and IGBT dimmers out...
