PV systems

The conversion of light to electricity is embodied in a photovoltaic system which is made up of the following parts:

Module, it is the element that generates the electricity.  Is form by a cluster of PV cells incorporated into a unit, usually by soldering them together under a sheet of glass.  Modules can be adapted in size in order to fit the proposed site and are quickly and easily installed.  They are also robust, reliable and waterproof . Modules generate electricity in DC and are available in sizes from a few watts to 300 watts.

PV array (for larger systems) They connect modules of same specs in series or parallel. The installation should be fixed at a certain pre-determined angle so as to collect the maximum solar irradiation over a year or during the season of highest demand and may be adjusted seasonally.

Battery bank: Power system battery banks are made up of multiple units of stationary deep-cycle batteries linked together in series. The size is determined by the load capacity and desired storage time. Battery stores the energy and fed the system. The use of battery storage is required due to the intermittent nature of the energy resource (daytime)

Charge controller: controls the charging of the battery and is used to protect the battery from over charge or discharge, it can also provide information about the state of the system or enable metering and pre-payment for the electricity used),

Inverter: devise that converts direct current (DC) from the module to alternating current (AC)


The modules are usually installed on rooftops and are connected to a battery, via a charge controller, which stores the electricity and acts as the main power supplier. The electricity current is provided in DC. An inverter is generally used to provide AC (220V), enabling the use of household appliances. They are

PV systems are modular and can be easily adapted to meet increases in demand. They are usually run during evening hours have minimum maintenance requirements (being the battery the component that needs more attention, since the effective life of the systems will depend on a correct use and maintenance ) and a long life of functional use.