776296
121
Zoom out
Zoom in
Previous page
1/123
Next page
MI 3108 EurotestPV Appendix E PV measurements calculated values
121
η2
Efficiency of panel (simplified)
Ptheo
Theoretical power of string at measured irradiance
Pnom
nominal power of panel at STC
Irrstc
nominal irradiance at STC (Irrstc = 1000 W/m2)
Irr
measured irradiance
M
number of modules in serial
N
number of modules in parallel
Depending on temperature criterion for PASS is:
If Tamb < 25 °C or Tcell < 40 °C => η2>0.85
If Tamb > 25 °C or Tcell > 40 °C => η2>(1-ηPV-0.08),
where ηPV is calculated depending on type of temperature being measured as
or
,
where NOCT is nominal operating temperature of the cell (data supplied by the
panels manufacturer) and γ is coeff. of temperature of power characteristic of PV
module (inserted value from 0,01 to 0,99) (data supplied by the panels
manufacturer).
NOCT
nominal operating temperature of the cell (data supplied by the panels
manufacturer)
γ
coeff. of temperature of power characteristic of PV module (inserted
value from 0,01 to 0,99) (data supplied by the panels manufacturer)
2. inverter:
AC
DC
P
P
.
Calculation of conversion efficiency with comparison of STC and measured-
corrected values
(U, I (AC, DC), phase, Irrstc, Tstc, Pnom, Irr, Tcell, Rs, α, β, Isc, M, N)
121


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Metrel MI 3108 - Eurotest PV at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Metrel MI 3108 - Eurotest PV in the language / languages: English as an attachment in your email.

The manual is 3.81 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

Others manual(s) of Metrel MI 3108 - Eurotest PV

Metrel MI 3108 - Eurotest PV User Manual - German - 136 pages

Metrel MI 3108 - Eurotest PV User Manual - Dutch - 62 pages


The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info