Dear Researchers,
I would like to have a discussion regarding No load operation of VSG connected to grid. The main source of energy is a simple DC source. My question is, Is VSG supposed to track the Real and Reactive Power references if it is connected to grid and there is no load attached. There is dc voltage source connected to inverter (No power source like PV or WTG).
My VSG Model perfectly tracks Real and Reactive powers when load is attached.
I want to discuss it with a specialist for detail insight.
Thank you.
The essense of VSG control is controlling the ac active power for frequency smoothing purpose. It is required the energy source, such as battery, pv, etc to provide the required active power.
It is required the energy source, such as pv, battery some thinking like that to provide the required active power.
Dear Xiaofeng Yang and Alaa Hussein Ali ,
I understand that. I already mentioned my circuit is working under load variations but doesn't work on no load. Actually for the passed few days i have struggled to solve it and i think i have solved it. It was a problem with voltage and current controllers.
Thank You for your response.
Dear Shah Fahad ,
When connected to the utility grid, the VSG should track the active/reactive power of the grid. This is mainly because, in this case, the grid should suppose the voltage and frequency, owing to the lager inertia (than the VSG of course).
The benefit of inertia of VSG is an still an open question. Because the larger inertia the VSG has, the slower it will track the grid.
On the other hand, if the grid is composed with VSGs (or inverters with inertia), then the inertia of the whole grid can be large enough, in this way, the inertia of a single VSG can contribute to the stability of the power grid.
Best regards!
Tiancong
Thank You Tiancong Shao for the brief explanation. I am new to this area and i am learning more about it daily.
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