I am studying the design of a grid tie inverter and according to the documents I've read through, many synchronize the inverter current output to match the phase-frequency of the grid voltage.
I'm awaiting your replies gratefully. Thank you.
yes if you are trying to inject power into the grid equivalent to the load power.
Mauricio,
Yes, that would be the scheme; but it would do only that much in steady state !
May not be entirely satisfactory if the load has harmonics, or undergoes transients.
-Sanjay
Yes it is the right one and happens in steady state, but due harmonics and nonlinear loads it is quite difficult to get satisfactory results during transients
Thank you everyone!
Out of the steady state, would I be delivering reactive power to the grid until I accomplish (if possible) to sinchronize inverter current and grid voltage?
Thanks again, your answers have been very useful.
Mauricio,
The answer to the question you are asking now when the system is out of steady state is not so straightforward. Depends on the network and the circumstances...
-SAnjay
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