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Paths in the new energy world The solar specialist IBC SOLAR, at home in Bad Staffelstein, Germany, together with Siemens, is all set to help farmers with an innovative photovoltaic solution that reliably and cost effectively pumps water using solar power. The winning formula: Standardization, modularization and globally recognized quality – Made in Germany. Whether in areas without any access to electric power, or in regions with significantly fluctuating power supplies – just as before, many millions of diesel-generator sets are used to irrigate farmland around the globe. Generally, water is pumped into distributed, elevated tanks from where it is fed by gravity to irrigate the plants at an optimum time, i.e. generally overnight. Ideal combination Photovoltaic solutions without batteries are the ideal choice for these types of systems. During the day, pumps operate with solar power and at night water leaves the tanks under gravity. Specialists from IBC SOLAR (Bad Staffelstein, Germany) and Siemens (in Erlangen, Germany) have jointly developed a solution that allows valuable diesel fuel to be reduced to almost zero, which makes a lot of economic as well as ecological sense. The core of the solar pump concept is to keep the existing pumps as well as the complete infrastructure, and to just replace the diesel-generator set by a photovoltaic system exactly tailored to the performance parameters of the pump. And it is precisely here where the skill sets of the two partners almost ideally complement one another: IBC SOLAR can dimension the photovoltaic systems to exactly provide the required power – taking into account detailed solar radiation data of the installation site. The complete systems are then installed by technical partners around the globe. Siemens’ contribution is to provide the appropriate frequency converters for the overall system, including Maximum Power Point Tracking (MPPT). MPPT ensures that the maximum available power can be drawn from the photovoltaic array, which represents a decisive advantage when dimensioning the system. Consequential use of standard components As a result of the mixed experience that many customers had with favorably-priced complete solutions from Asia, when developing the solar pump, the solar and Siemens consciously selected an open concept based on well-proven standard components. These systems can be sim- ROLAND SIMON & JOHANNA GEBHARDT DIGITAL FACTORY DIVISION OF SIEMENS AG Pilot project in Namibia. Since June 2015, a farm has only been using photovoltaic power for irrigation. SOLAR POWER 22 energética INDIA · NOV | DEC15


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