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How can I supply reactive power using one of the models of grid-connected pv arrays in simulink?

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David Yagami
David Yagami on 12 Mar 2016
Answered: Joel Van Sickel on 18 Aug 2021
There are several models of grid-connected pv arrays in simulink, but all of them supply active power only. How can I supply reactive power in addition to active power?
Is there any documentation about the models? Like how to use them, or how to change the output power?

Answers (1)

Joel Van Sickel
Joel Van Sickel on 18 Aug 2021
Hello David,
I realize this reply is too late to be useful, but hopefully others may find it useful.
Many of these control approaches utilize the d/q frame. When controlling, they will set the Iq current to 0 which will cause it to supply only reactive power. Do not set q to 0, and you can add reactive power. It gets a bit more complicated once you determine specifically how much reactive power you want to add (will need a closed loop control algorithm)
There are examples on file exchange that may be more helpful than trying to build the control algorithm from scratch: https://www.mathworks.com/matlabcentral/fileexchange/85705-active-and-reactive-power-control-for-a-three-phase-inverter
Regards,
Joel

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