PVWatts v5 AC nameplate rating

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nino
Topic Author

07 Apr 2015 13:36 #3218 by nino

PVWatts v5 AC nameplate rating was created by nino

I have been checking the PVWatts Version 5 Manual, and have one question related with Inverter model (section 12):

How does one define the AC nameplate rating (Pac0)?
Is AC nameplate rating equal to DC rating of the system divided by DC-to-AC ratio (1.1):

Pac0 = Pdc0/1.1

Where:

Pdc0 = System size (4kW by default)

Meaning:

Pac0 = 4/1.1 = 3.63 kW

?

Thank you for the reply.

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Paul Gilman

07 Apr 2015 15:37 #3219 by Paul Gilman

Replied by Paul Gilman on topic PVWatts v5 AC nameplate rating

Yes. For the PVWatts model, the total inverter nameplate AC capacity is determined by the system nameplate DC capacity and DC-to-AC ratio as you describe.

For the detailed photovoltaic model, the total inverter nameplate AC capacity is the product of a single inverter's AC capacity and the number of inverters.

Best regards,
Paul.

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