Could someone please give me some advice on my PV model in Simulink.

I am trying to model a PV system connected to 2MW Grid. The goals are to scope the output power and monitor frequency on the grid.

Now I have several questions:

1. g input for DC-AC inverter should be control but I do not know what kind of control should I do. I just want the inverter to convert DC voltage from PV to AC.
2. I have irradiance data to be used for this model, but I do not know how to input it to workspace block. Somehow I could not change the Data parameters in'From Workspace' block.
3. What block should I add so I could monitor the effect of PV power fluctuation on the frequency of the Grid?
4. The Grid should be set to 2 MW, but I am not sure whther to use RLC Load or Dynamic load?

I would really appreciate it if someone could give me some advice.

Answer 1

[Sabin]

1. g bundles the gate signals to be generated by the PWM generator. The PWM is generated based on a reference waveform.
2. Probaby best to check the documentation of 'From Workspace' block: https://mathworks.com/help/simulink/slref/fromworkspace.html
3. A Spectrum Analyzer will probably help in this situation
4. You can have an ideal grid or you can add some additional load as well, this will depend upon the requirements you have.

Simscape Electrical provides an example that shows how to model a three-phase grid-connected solar photovoltaic (PV) system. This example supports design decisions about the number of panels and the connection topology required to deliver the target power. The model represents a grid-connected rooftop solar PV system without an intermediate DC-DC converter.

https://mathworks.com/help/sps/ug/three-phase-grid-connected-in-pv-system.html