I am new in instrumentation and control. I am developing a hardware for a project and the following is my application.
- I have three phase stepped down voltages and stepped down currents entering my board.
- I can adjust the loads to be either purely real power loads or reactive power loads.
- I am trying to calculate the three phase rms voltage, three phase frequency using pll, real power, reactive power and the apparent power.
I am able to calculate the real power, reactive power and apparent with ease. I am having some questions regarding the three phase rms voltage calculation. Right now, I am measuring the line to neutral of the phase A and calculating the rms of this measurement. The loads are balanced and the system is also balanced. I would like to know, if this is the right way to calculate the three phase rms (just the rms of one phase) or is there any other way to calculate the three phase rms.
Any help would be appreciated.