I am trying to calculate the DC link current of a three phase PWM inverter.
I found in a paper[1] that its:
IDC=K1Ia + K2Ib + K3Ic
(Where K1 K2 K3 are the PWM control signals applied to the upper switches)
But I want to know how this equation is derived.
Any help would be much appreciated.
[1]Rym, Marouani & Mami, Abdelkader. (2010). Voltage Oriented Control Applied to a Grid Connected Photovoltaic System with Maximum Power Point Tracking Technique. American Journal of Applied Sciences. 7.
(Attached)