I tried to plug a battery back to photovoltaic system, but it refuse to operate. we tried several inverters, including a true sine wave, but it never worked.
2007-04-12 15:56:26 · 2 answers · asked by jra50 1 in Science & Mathematics ➔ Engineering
You're really lacking details here. The most likely answer is the lack of available current. A battery backup system while charging will require a good amount of current, something solar panels won't necessarily be able to supply. Also, the fact that you're using an inverter, makes me believe you have a low voltage DC solar panel system that you're trying to turn into house level AC voltage (ie 110V) which then later is turned back to DC current inside the battery backup. Each process takes its own amount of energy to take place, making the overall system less efficient.
If you want a solar charged, battery backup system, thats able to power a 110 volt AC system, you'll need solar panels, then a charge circuit connected directly to the battery. If the solar system didn't have enough power to directly power the system in question, then you'll either have to deal with turning the system power on/off periodically to allow recharging, or you'll have limited run-time in any case.
2007-04-12 16:09:20 · answer #1 · answered by FourWheelDave 3 · 2⤊ 0⤋
A photovoltaic system is DC and a battery is DC.
If you want to use the system to charge the battery, it must have an output voltage greater than the battery voltage. If you want to use the battery to back up the system the battery voltage must match the system design voltage, preferably being very slightly smaller so the battery will trickle charge off the system.
Inverters take a DC input and output AC.
2007-04-12 23:13:22 · answer #2 · answered by Helmut 7 · 0⤊ 0⤋