why POA irradiance is very high as compared to final energy output

  • saikatghosh90
  • Topic Author
More
11 Aug 2022 13:34 - 11 Aug 2022 22:11 #11347 by saikatghosh90
why POA irradiance is very high as compared to final energy output was created by saikatghosh90
why POA irradiance is very high as compared to final energy output, when both have the same unit (kW) ? I am attaching the simulation file for reference.
Attachments:
Last edit: 11 Aug 2022 22:11 by pgilman.

Please Log in or Create an account to join the conversation.

  • pgilman
More
11 Aug 2022 22:18 #11348 by pgilman
Replied by pgilman on topic why POA irradiance is very high as compared to final energy output
Hi Saikat,

I would expect the DC electrical output of the photovoltaic system to be much lower than the solar energy incident on the array because of conversion losses in the module and inverter, and losses in wiring and other parts of the system.

In your case, the nominal conversion efficiency of the module is 20%, and there are additional conversion losses through the inverter (about 96% efficiency), and losses as defined on the Losses page.

Best regards,
Paul.

Please Log in or Create an account to join the conversation.

Moderators: pgilman
Powered by Kunena Forum

NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC.

NREL Home

NREL Research

Follow NREL

NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC.