One of our partners, LPI EUROPE SL, has been selected among other 9 projects in the 3rd call of Fondo de Emprendedores organized by Fundación Repsol. They present a novel concept to produce photovoltaic solar energy with high efficiency. “The high concentration ultra flat module MF 45”
The project rises from the need to develop a more sustainable energy-model through cleaner energy production. The sun as a source of inexhaustible and non-polluting energy is one of the more promising alternatives in the green energy field.
It is essential to lower the price of the solar energy in order to make it competitive and independent of subsidies policies. The current goal in the European zone is to reach a price between 0,10 and 0,25 €/kWh by 2020.
The module MF 45 can potentially increase the efficiency in a 60%, relative to the best flat panel in the market (two-axis tracking), lowering the electricity generation costs and reducing the footprint needed to build solar plants.
Project description:
The MF 45 is an ultra-flat high-concentration photovoltaic system of very high efficiency, which may convert the equivalent of a 45% solar direct radiation into electricity. This very high efficiency is obtained due to the simplicity and high performance of the optical system, but also thanks to the use of solar spectrum division techniques between high-concentration multi-junction cells (MJ) and low-cost silicon (Si) solar cells. This patented system is profitable because of the lowest material investment (reduced parts and achievable through mass production methods), but above all because of its high efficiency, that improves in a 30% the best existing concentration module.
The MF 45 consists of an input panel based on Fresnel lenses (“Silicon on Glass” SOG technology) situated over a flat plate of silicon cells with focused evaporations –spectral splitters- for solar spectrum splitting. The spectrum splitter returns to the input panel (which contains the primary and secondary lenses molded and auto-aligned in a single step, the MJ cells, the wiring and the heat-sink mechanisms) the fraction of solar radiation that best suits the MJ cell, letting through to the Si cell the radiation that can’t generate electricity in the first one but capable to do so in the second one. Due to the spectral splitter, the module thickness is reduced in half, bringing it closer to the dimensions of a flat panel.
A module MF 45 with 6-9 individual lenses of concentration will be designed and developed as a proof of concept under the project partially financed by Fundación Repsol.
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