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

From HeatSpring Advanced PV Course Discussion Board

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

From HeatSpring Advanced PV Course Discussion Board