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Module 1: Standalone Photovoltaic Systems

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Standalone Photovoltaic Systems - Lesson Summary

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The principal components of a standalone PV system are as follows:
PV modules
Mounting structure
Charge controller
Battery
Inverter/DC-AC converter
Cables
Standalone systems are used to charge banks of batteries during the day, for use at night.
Standalone systems are ideal for remote areas where grid electricity does not reach.
A charge controller protects the battery from overcharging.
A typical battery is composed of several individual cells each of cell voltage 2V.
The required number of batteries = rated energy of battery bank/rated energy of a single battery.
The major causes of ageing of batteries are sulphation, corrosion, and gassing.
A photovoltaic water pumping system supplies power through a DC-AC inverter to an electric motor coupled to a submersible pump.