Forum Discussion
red31
Jun 22, 2017Explorer
With PWM, I want the panel to operate left of Vmp due to the radical drop in power to the right of Vmp (IV/power curves).
So I look at a kyocera panel specs NOCT (real life conditions), the 17.7Vmp spec is now 16.0v @ NOCT.
It gets hotter here than 20C NOCT.
So what battery voltage do ya want to use to determine max voltage drop NOCT?
I want to be able to do monthly 15.5v so with 0.5v voltage drop I'd be @ NOCT Vmp. 0.5v of 15.5v is just over 3%.
Of course the rest of the month 16v-14.8 = 1.2v of drop.
https://pdf.wholesalesolar.com/module%20pdf%20folder/KD135GX-LFBS.pdf?_ga=2.225155162.157547657.1498147887-968766432.1489756707
So I look at a kyocera panel specs NOCT (real life conditions), the 17.7Vmp spec is now 16.0v @ NOCT.
It gets hotter here than 20C NOCT.
So what battery voltage do ya want to use to determine max voltage drop NOCT?
I want to be able to do monthly 15.5v so with 0.5v voltage drop I'd be @ NOCT Vmp. 0.5v of 15.5v is just over 3%.
Of course the rest of the month 16v-14.8 = 1.2v of drop.
https://pdf.wholesalesolar.com/module%20pdf%20folder/KD135GX-LFBS.pdf?_ga=2.225155162.157547657.1498147887-968766432.1489756707
About Technical Issues
Having RV issues? Connect with others who have been in your shoes.24,223 PostsLatest Activity: Mar 30, 2025