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:
I would really appreciate it if someone could give me some advice.
1- you should use a simple PWM control
2- for the irradiance data you should use step or constants
3- to monitor the frequency i think you should use the FFt analysis and THD
4- if the load is constant then you should use RLC load instead of dynamic load
Thank you Djilani for answering.
But the irradiance data varies according to time step, is it really possible using constant?
There are 733 data, meaning 733 minutes of irradiance data. Each minutes has different irradiance data.
For Question No. 2, following links may help you a bit and can give you some insight:
1) https://www.mathworks.com/help/simulink/slref/_mw_1c324ca8-bd1d-4334-aa0d-ac5f79839808.html
2) https://www.mathworks.com/help/simulink/slref/_mw_b84ca8f5-b05c-49df-abf0-6af712024c94.html
3) https://www.mathworks.com/help/simulink/slref/_mw_7a3fe330-9a23-4390-8a9e-73c7972b766d.html
For Question 2. Create a variable in workspace with 2 columns (one form and the another for irradiation) and named as you want. Then use the 'from workspace block' and put the variable name in 'Data'. If your 'from workspace' block does not work You could use the "Repeating Sequence Interpolated" block.
Mochammad Rhadityo Widiastomo
Ques 1: If you are using MPPT technique along with boost converter then use a voltage reference based MPPT and regulate that Vref using a simple PI controller to regulate Output voltage of PV. That is faster than duty cycle based control with less issues. The DC-Link voltage (DC input capacitor to inverter) can easily be regulated via another PI controller. Further you need to regulate current of Grid that's it.
Ques 2: Go to library and write workspace. Take workspace block and insert it to scope of any signal you want to send it to workspace.
Ques 3: Mux signals of ouput power of PV and frequency of grid. That way you can analyze the effect of power fluctuation at a specific time on frequency.
Ques 4: First try to evaluate all this using no load situation. When it is done then add load what ever you want and it will work.
For more explanation read my paper below. I hope this helps.
Conference Paper Particle Swarm Optimization Based DC-Link Voltage Control fo...
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