Dear researchers,
I am implementing a model for a grid-connected PV-inverter. In the current controller part (see the photo) there are two PI controllers that have an essential effect in calculating the final inverter output. From my trails until now limitations for the PI controllers output are necessary. Has anyone an idea how these limits can be calculated?
Many thanks in advance
Mansour Alramlawi
Hi,
I suggest you to go through this thread, hope you will get some meaningful ideas.
https://www.researchgate.net/post/Choosing-PI-controller-output-limits-applied-to-control-of-grid-connected-inverter-systems
Thank you !
Anil Lamichhane Yes I have seen that but there is no answer... unfortunately.
Mansour Alramlawi These papers might help
https://mdpi-res.com/d_attachment/energies/energies-14-02516/article_deploy/energies-14-02516.pdf
https://www.mdpi.com/2079-9292/10/14/1704/pdf
Article Optimal PI controller based PSO optimization for PV inverter...
Dear Mansour Alramlawi ,
The PID controller affects more the dynamics of the inverter when the output current changes from one value to an other value. It affects the rise time, the overshoot and the steady sate error. So, It will not affect much the output current except with the steady sate error value. You choose the different parameters of the PID controllers to shape the dynamic response of the controller while minimizing the steady state error. As for the steady sate value it will be controlled by the reference value.
I would like that you follow the papers in the links:Conference Paper Control of The Grid-connected inverter using dsPIC Microcontroller
Article Simulation and Implementation of Grid-connected Inverters,
Best wishes
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