Draw the circuit diagram of a stand-alone photovoltaic system assisted with batteries and explain the function...

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Electrical Engineering

Draw the circuit diagram of a stand-alone photovoltaic systemassisted with batteries and explain the function of each stage ofthe system.

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Standalone PV systems are used in areas that are not easilyaccessible or have no access to an electricgrid A standalonesystem is independent of electricity grid with the producednormally being stored in batteries A typical standalone systemwould consist of a PV module or modules batteries and a chargecontroller An inverter may also be included in the system toconvert the direct current generated by the PV modules to thealternating current from by normal appliancesWhile a major component and cost of a stand alone PV system isthe solar array several other components are typically neededThese includePhoto voltaic generator equipped with arrays of photo voltaiccellsCharge controllerBattery banksInverterThe Charge controller Battery banks Inverter together calledas power conditioning unit The power conditioning unit make up thebalance of the system Depending on the type of load whether DC orAC the power can be delivered to load directly or through DC to ACconverter inverter The battery bank is designed in such a way tomeet the load demands irrespective of the solar irradiancePhoto voltaic generatorA photo voltaic generator consists of large number of photo voltaiccells connected together The modularity in PV generator startswith array an array is subdivided into modules and each modulehas a predefined number of photo voltaic cells connected in seriesor parallel The cells are encapsulated with various materials toprotect them from environmentWhen two PV cells are connected in series the voltages add upif connected in parallel the See Answer

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