Memmeddu
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Yesterday I got an air compressor and a bench grinder both are three phase 400V
I ran them using my genset and they works
But now I need to run them without the generator
I first thought to use a capacitor and this can work on the bench grinder but not on the air compressor
So I was thinking to use a VFD but the output has the same voltage of the input so 230V
I would like to give 230V single phase and obtain 400V three phase ,an I found a very expensive VFD that does that
After little bit of searching about I understood that the majority of the induction motor build before 2000's can't work driven by an inverter , because winding insulation can't manage the spikes and electrical impulses generated by a VFD
Because the VFD doesn't make a clean concatenated sinusoidal but it's more like what we obtain with a PWM or SCR controller
So this option has to fail because is all 70's or 80's stuff
Was reading about rotary phase converter but I can't really understand how this thing works
A bunch of capacitors and a motor ,live and neutral are L1 and L3 ,capacitor starting winding will become L2
You connect the motor you want to run in delta configuration and it should work in 230V 3~
I don't really know what to do because they will give me also a pillar drill and other 3 phase tools
Have you any experience ,advice or other that can help me to understand what to do ?
I ran them using my genset and they works
But now I need to run them without the generator
I first thought to use a capacitor and this can work on the bench grinder but not on the air compressor
So I was thinking to use a VFD but the output has the same voltage of the input so 230V
I would like to give 230V single phase and obtain 400V three phase ,an I found a very expensive VFD that does that
After little bit of searching about I understood that the majority of the induction motor build before 2000's can't work driven by an inverter , because winding insulation can't manage the spikes and electrical impulses generated by a VFD
Because the VFD doesn't make a clean concatenated sinusoidal but it's more like what we obtain with a PWM or SCR controller
So this option has to fail because is all 70's or 80's stuff
Was reading about rotary phase converter but I can't really understand how this thing works
A bunch of capacitors and a motor ,live and neutral are L1 and L3 ,capacitor starting winding will become L2
You connect the motor you want to run in delta configuration and it should work in 230V 3~
I don't really know what to do because they will give me also a pillar drill and other 3 phase tools
Have you any experience ,advice or other that can help me to understand what to do ?