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energetica-india-57_asiapowerweek

Part of PV system cost driver cost proportional to processing area material costs, energy, Capex yes yes silver usage area material costs yes bifacial area yes The DC system voltage is currently undergoing a change to a 1500Vdcsystem; this Is increasingly demanding the use of new power bridge technologies for the inverters which are becoming more voltageproof with SiC (silicon carbide) and exhibit lower switching losses. To summarize all the effects once again, a further significant decrease in the absolute cost of PV is rather unlikely. cost incluenced 2nd 2. Increasing performance A typical modern computer costs around 1000 to 2000 USD today and this has been the case for many years! However, the performance, i.e. USD/Gflop, increases every year. This trend is also very likely to occur for PV: In the table of dependencies, the dependency on efficiency appears very frequent. If the same system has a greater SOLAR POWER output per unit area and in particular generates more energy, it is more competitive than other systems. Inverters, DC cabling, combiner boxes, etc. are also becoming more efficient, but the greatest potential for increasing efficiency lies in the module. Here, the leverage extends to the surface-area-dependent costs in the remainder of the system: The cells determine the efficiency in the module and this is the reason why the majority of solar production lines are currently being converted from the full-surface Al- BSF technology to the PERC technology, something that enables an efficiency increase of ca. 1% absolute. The decisive factor here is the outstanding passivation of the wafer rear.This factor can be easily achieved today in mass production with the MAiAPECVD process. Here, the passivation of the wafer surface is accorded a key role-photons generate electron-hole pairs in the wafer that exist for a certain period of time within the wafer. All charge carriers that reach the surface during this time can be used in princi- Year 2009 2011 2013 2014 2016 Kerf μm 150 150 150 120 <90 Time Hrs 8 4 3 3 2 DW Use m/Wf (surry) 2 1.2 1 1 Capacity MW 10 15 16 17 30 Table 2: Development of most important wafering properties. order by longevity degradation efficiency PV Module Glass (G) Backsheet (BS) area energy yes yes yes Encapsulant area energy yes yes yes Cell- Connection area material costs yes yes yes junction Box/ cable panel power material costs yes Frame panel power energy yes module processing panel power process time yes yes Wafer poly silicon area, thickness energy yes Crystallization area, thickness energy, process time yes yes wafer processing area, thickness process time yes yes yes cell cell BOS mounting system area material costs yes DC cabeling area material costs yes yes DC combiner area material costs yes yes Land costs area Inverter system power material costs yes yes AC connection system power yes yes administration maintenance area yes yes Table1: Dependencies Graph 1: Dependency efficiency and leverage. 27 energetica INDIA · MAY | JUN16


energetica-india-57_asiapowerweek
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