Off-grid photovoltaic systems are used either in applications where there is no conventional electricity supply available or in hybrid applications where the photovoltaic system will cover part of the electricity demand so that the use of conventional combustibles will be reduced.
Their applications are varied and range from rural electrification to vacuum pumping in farming areas.
ELEMENTS:
- Solar Collection Subsystem: It consists of photovoltaic modules.
- Regulating Subsystem: It consists of one or several charge regulators responsible for protecting the batteries from fully discharging or overcharging, controlling the charging cycles of the batteries.
- Power Collection Subsystem: It consists of one or several batteries (monobloc, gel, acid lead, etc.) connected in such a way that the output voltage is the one belonging to the system. It collects the power coming from the solar modules to use it later when the consumers require it.
- Power Inverter Subsystem: It consists of one or several inverters, which convert the direct current and voltage received from the batteries into alternating current and voltage to supply consumers.
- Support Subsystem: It consists of support equipment such as electricity generators, wind generators, water generators, etc., which are used to meet the power demand the photovoltaic system on its own is not able to meet during the months with the lowest solar radiation.