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HeatSpring PV Course Blog

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Temperature Coefficient of Vmp, where do we get it? Just use the temperature coefficient of power.

Posted on 28 April, 2016 at 13:23

Q:

Sean
My question is about determining the minimum number of modules required to turn the inverter on. All modules I have reviewed have "temp coefficient for Voc" but none have "temp coefficient for Vmp"
Example from Canadian Solar module
Temperature Coefficient (Pmax) -0.43% / °C
Temperature Coefficient (Voc) -0.34 % / °C
Temperature Coefficient (Isc) 0.065 % / °C

Is Temperature Coefficient (Pmax) -0.43% / °C used when calculating minimum number of modules required?
Thanks

A:

Most module datasheets do not come with the temperature coefficient of Vmp, however whenever I have seen the manufacturer list the temperature coefficient of Vmp, it has been the same as the temperature coefficient of power, so I just use the temperature coefficient of power.

Thanks,
Sean White

Categories: PV Boot Camp and NABCEP Entry Level Exam Prep Course

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