Connecting large PV system with grid- Issues and Concerns

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While PV project developers are focused to optimize system in terms of optimum yield. Its important to consider whether the energy generation by PV system can be absorbed by the grid, If the grid parameters are not studied properly the profitability and viability of PV projects becomes question mark. It is  important to have a stable grid […]

What should be an appropriate voltage of a DC Array?

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Typically PV systems are designed considering the input voltage window of inverters ,in case of central inverters the input voltage range is  400-800V. Higher The array voltage will lead to several benefits which will reduce the overall system cost . Due to above benefits solar PV system designers are moving from typical 400- 800V DC […]

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 […]

Optimization of PV system for minimizing the shading losses- Case Study

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In continuation with the previous article on optimization of pv system for minimizing the shading losses (http://firstgreenconsulting.wordpress.com/2013/04/08/optimization-of-pv-system-for-minimizing-the-shading-losses/) , we will present a case study in this article. Output of the Solar Panel is greatly effected by the type of shading and where they are placed. If the shading steps forward vertically then the panel should […]

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? […]