Battery current is the average of the phase current yes; but the phase current is a vector whose components are the real current, transfering power, and the reactive current in the inductance. In the ideal motor, reactive current is zero.casainho said:I is the motor phase current. Yes, we have only the battery current mesured on the shunt because the signal is low pass filteed on hardware.jur said:Actually, while cycling to work this morning I realised something important: We don't have the I to plug into IwL! That is actually an unknown quantity. The only thing we have is filtered average battery current.
So back to analysis for me...
But phase amplitude current should be I battery / duty-cycle, right??
We might be able to come up with an iterative procedure to converge to the optimum phase angle using battery current as a start. But I am staring at the pics again. Right now, I am thinking we will have to use the geometry approach like Colter did. Watch this space...