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Calculating energy dissipation in a 3 phase motor/generator

S

Scott Ronald

Hi


I am some code to monitor a small 3 phase generator, and I was wondering
about how to calculate the total energy dissipation. So far I have a
routine to calculate the RMS current in one of the 3 wires coming out of
the generator. I now need the resistance of the phase. I know that the
resistance between any pair of the 3 wires is 15 ohms. Is
RMS_current*15ohms the correct value to use to calculate power?

Once I have the power I was thinking I would accumulate the power
readings into a variable periodically then, once I have finished x
periods, multiply accumulated power by the total elapsed time to get
dissipated energy. I can then look at my last few energy calculations
and find if I need to slow down or turn off the generator. I need to do
this to prevent over-heating in the generator.

Scott
 
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