I am developing a PV base DC microgrid in Simulink delivering power to Variable DC load(12V). when I am increasing DC load, unexpectedly the PV power generation decreasing. As a result, the value of the power scope of DC load is also decreasing?
PV power= 3KW (25 oc and 1000 w/m2 )
Variable Load power= 240w, 360w, 600w
In order to study effect of DC load on power generation:
https://www.mdpi.com › pdf may be useful paper. Or read https://www.electricaleasy.com/2016/01/variable-loads-on-power-system.html
Hi Muhammad Ali
i set the load fix for every simulation. but still pv generation increase as i am increasing the load.
It always happens with starting research/investigation, however., you will get its expert by continually checking the whole process. Some time a very small parameter error causes lot of difficulties. I hope you will do it...by further literature review.
*i set the load fix for every simulation. but still pv generation decrease as i am increasing the load
Dear Abdul wahid,
welcome!
your pv power is 3000 watt under the standard conditions. if the pv generator is operated under this standard conditions it will have an optimum load power= 3000 watt. if it is operated at higher or lower load than this optimum load it will output a smaller power than the this optimum power.
In summary there is an optimum load which corresponds to the maximum power point conditions.
So, Rm= Vm/Im
Please refer to the book chapter: Chapter Solar cells and arrays: Principles, analysis and design
Best wishes
Hi Abdelhalim abdelnaby Zekry
Thank you for your response, i will see it
The output power of the PV panel is sensitive to the variation in output voltage. A small variation on Vpv can substantially decrease Ppv.
Therefore, especial control techniques called MPPT are used to maintain the power in a constant value.
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