Effect of shading in PV systems

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Solar PV plants are composed of PV modules connected in various series and parallel combinations to provide optimum output .It is important to note that a single module expose to sun will behave different  vis -a-vis  a module which is part of a string connected through other component like Inverter ,Combiner box etc .. as […]

Guidelines for selecting PV Modules

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PV modules in case of large scale power plants are selected based on the integration of modules, voltage and current rating with the inverter voltage and current rating. Typically for a grid connected plant the inverters operate in the voltage range of 450-750 volts and accordingly the modules are selected to match the desired operating […]

Solar Modules could fall to 25 cents / Watt by 2020~ Citigroup

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Energy analysts at Citygroup have come up with an astonishing assessment regarding the cost of Solar Modules, which could drop down to 25 cents/ Watt by 2020. Their analysis is based on opinion that solar is the future of World’s Energy demand. The speed with which cost of Solar PV has declined has left many perplexed. Based […]

Understanding of Various Components of Roof Top System

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A Solar System generally  comprises of the following elements: Solar Panel, a Charge Controller, a Power Inverter, a Monitor and Electrical Distribution System. As seen with each other technologies each component has different manufacturers , quality, features and price. Solar Panel: A Solar Panel consists of silicon crystals which converts the rays on the sun […]

ABB expands its central inverter production to India

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ABB has expanded the production of its solar inverters by opening a production line in India to support the rapidly growing local photovoltaic (PV) market. The first orders from new production line have been delivered already and over 200 megawatts (MW) of orders is booked. The new production line for ABB’s central inverter PVS800 product […]

Inverter Sizing and Selection for roof top PV system

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Inverter selection for installation of roof top PV system will depend upon Energy output of the array Matching of allowable inverter string configuration with size of the solar array in KW and size of individual modules with array. Whether we decide to have one central inverter or small multiple inverters. Why multiple inverters make sense? […]

Product Review: Multi Cluster Box for Off-Grid PV

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SMA Solar Technology AG has released the Multi-cluster Box, an off-grid AC distribution hub that manages a variety of renewable and combustion generation sources for large-scale Sunny Island multi-cluster systems. Now available for the North American market, the SMA Multi-cluster Box features a pre-configured design that the company says simplifies the installation of off-grid renewable […]

Selection of Inverter for a roof top system

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The DC power produced is fed to inverter for conversion into AC. In a grid tied system AC power is fed to the grid at 11 KV three phase systems or to a 415V three phases or 220/240 V single phase system line depending on the system installed at institution/commercial establishment or residential complex or single house consumer and […]

Optimising inverter and array design

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The performance and reliability of PV system is greatly affected through mismatch of arrays. Mismatch occurs due to the interconnection of cells with different performance characteristics. This condition results in two detrimental effects: power loss and reliability degradation. When the characteristics of cells within a PV array differ, individual cells may operate sub optimally, causing […]