gurnmaster
New Member
Hi,
I am currently doing a project on a solar charge controller for a Lead-acid battery. The project specification stated that the circuit should be able to boost the output of the panel under low light conditions so as to still maintain a charge to the battery. However from looking at PV V/I curves I don't see how this is possible, as the level of solar radiation determines the amount of current that the panel is able to provide, hence if you try to draw to much current the voltage reduces. With low levels of light, trying to boost the current will give an unusable voltage? Does anyone here have experience of building a buck boost converter charger? I was planning on using an LTC3780 for the buck boost circuit and using a PIC to control it. Was planning to use around a 100W solar panel. Any help greatly appreciated.
Cheers.
I am currently doing a project on a solar charge controller for a Lead-acid battery. The project specification stated that the circuit should be able to boost the output of the panel under low light conditions so as to still maintain a charge to the battery. However from looking at PV V/I curves I don't see how this is possible, as the level of solar radiation determines the amount of current that the panel is able to provide, hence if you try to draw to much current the voltage reduces. With low levels of light, trying to boost the current will give an unusable voltage? Does anyone here have experience of building a buck boost converter charger? I was planning on using an LTC3780 for the buck boost circuit and using a PIC to control it. Was planning to use around a 100W solar panel. Any help greatly appreciated.
Cheers.