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PV array with grid system with battery charger

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Geneve Goh
Geneve Goh on 21 Jun 2021
Answered: Juan Sagarduy on 1 Jul 2021
Hi I'm facing some troubles with my model now. I'm unsure if the system is synchronised to DC as the grid is an AC source. However, a 3 level bridge is in place to convert the AC to DC. Furthermore, I'm unsure if the battery placement for charging is in the correct place. Appreciate any help i can get, thank you.

Answers (1)

Juan Sagarduy
Juan Sagarduy on 1 Jul 2021
Hi there
The synchronization is done through a PLL block that senses the voltage of the grid and obtains the phase angle to be used in the PWM control of the DC-AC converter. This PLL is inside the VSC control, if you use a shipped demo as a base for your work. So that would solve the synchronization aspect.
When it comes to the battery, you may need a DC-DC converter between battery and DC link to regulate the flow of energy to/from the DC solar system.But the location seems correct to me.
Best of luck / Juan

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