My name is Ramachandran and I live in Chennai, India. I want to purchase about 1 KW of PV panels and connect them to my current UPS ( un interrupted power supply). The UPS charges a 12V 125Ah battery when we get 250V A/C supply and when we have a power cut it takes 12V DC and inverts it into 250V A/C and supplies to my house.
The UPS is rated for 1KVA . This UPS runs all the critical load in my house, like LED lamps, ceiling fans, TV, laptop computer, Modems, Wifi router etc. Actually I can survive with out power for almost 3 days with the existing set up as my load is very less.
I want to purchase PV panels worth 1000 W and charge my 12V 125 Ampere Hour Battery and get off the grid for atleast my day to day needs. Only high powered equipment like the fridge and A/C will be connected to the grid.
24V panels are availabe at nominal rates. 250 W @ 24 V cost 65 Rs/Watt for Mono.
But I have an invertor that runs on a 12V battery. I do not want to throw away my invertor and my battery and go for a 24V system.
How can I charge my 12V battery with a 24V solar panel.