I understand that when inverter change DC voltage(ex:PV voltage) to AC voltage, we need to condition the frequency and voltage to be the same level as the grid.
We can use PWM for this. I study this from Matlab, so my question will be based on the PWM block.
It seems the input for PWM generator is V refference that is obtained rom entering V and I from Grid and also the DC Voltage into VSC control like in the picture.
So I am wondering what is the theory behind this logic?
the ac voltage of the inverter must have the same frequency and amplitude as the grid as well as the phase angle, so you need those parameters measured from the grid, in order to determine the reference signals for the PWM control
the reference ac voltage of the inverter must have the same frequency and amplitude as the grid.
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