I want to create a neutral node at the output of a 3-phase Inverter for ACIM. Is it possible to do that by adding 3 resistors at the Inverter outputs and join them together to get the neutral node? What value of resistor is recommended? I need that neutral node to see the per phase waveforms on the oscilloscope. Can we call it a virtual ground?
To provide a neutral point for an oscilloscope, a resistor network should be fine. The resistor value should probably be low compared to the input impedance of the scope, but high enough so that the resistor power ratings don't need to be too high.