Saman Optical: solar power grid

Saman Optical: solar power grid
Concentrating solar water heater power (CPV) in the development of
Solar power through the first generation of crystalline silicon cells, the second-generation thin-film batteries, has been developed to the third generation of concentrating solar power. Because just at the initial stage, the global installed capacity of solar forklift concentrator, little. Statistics show that from EPRI ,2007-2009 global annual increase of concentrating solar capacity, respectively 2MW, 10MW and 2MW, the current global installed capacity of less than 200MW. The future, as the continuous improvement of photovoltaic installed capacity, as well as the continuous improvement of performance of concentrating solar power, concentrating solar forklift truck power cost and technological advantages will gradually appear, will be a huge switches market space. CPV Consortium expects new CPV 2010 global installed capacity will reach 150MW, 2015 annual added capacity to 1.8GW.
From the relevant company, in 2009, SolFocus, Amonix, Concentrix, and Emcore CPV companies such as leading the development and construction of more, of which about U.S. companies SolFocus has an annual capacity of 50MW, ranked first. In recent years, Chinese b2b companies have also started to intervene in the field of CPV, in addition to the three optical security, there are dried according to optical, Macro, crystal optoelectronics, photovoltaic and Dongshan Lida Precision and other wind turbine generator companies, in varying degrees, involved in research and development CPV and related products.
The advantage of concentrating photovoltaic power generation
Compared with the previous two generations of cells, the third generation multi-junction solar cells with three different PN junction semiconductor material composition, or 3 sub-cells; different sub-cells corresponding to the solar spectrum in different spectral components, thereby enhancing the photoelectric conversion cells efficiency. High power concentrating photovoltaic power generation systems (CPV) using Fresnel lenses to focus sunlight into a smaller area but more efficient multi-junction solar cell. Automatic recovery at high precision tracking technology to enhance the system's generating capacity, further reducing cost of power generation; significantly improve the utilization of solar battery chip.
Three-junction GaAs concentrator cells with good heat resistance, radiation and other characteristics, has been widely used in the field of space. The current multi-junction solar cell conversion efficiency has reached 40% conversion efficiency of silicon solar water heater cells relative to only 27%. Only for part of the silicon cells absorb the solar spectrum bands, multi-junction solar cells on the response of most of the solar spectrum. Solar Energy Research Institute University of Madrid, Antonio Luque, director of silicon solar cells that the current has reached its theoretical limit of efficiency, but he believes the III-V monolithic integrated family of cell efficiency at least 50%.
Concentrating solar system has many advantages:
The efficiency of solar cells to 1-1.5% per year steady growth in 2015, up to 50%, 70% of the theoretical limit. Multi-junction cells have excellent temperature characteristics.
Using highly efficient solar cells and semiconductor chips use far less than traditional PV. Widely using traditional raw materials (plastic, steel, aluminum, etc.), to further reduce costs. Module production line less upfront investment, expand production capacity quickly. Large generating unit area, the system footprint. The use of solar tracking die casting systems can improve the power output. Suitable for large-scale grid power plant construction. Established in the project module assembly plant near the site, further reducing costs. Low energy consumption, pollution, environmental impact.
The different solar power generation using different areas of technology, photovoltaic technology will be long-term coexistence of various different market segments, CPV technology is mainly used in large-scale photovoltaic power plants and solar radiation intense casting iron areas. View current output from solar cells, crystalline silicon cells are still dominant in 2009, crystalline silicon cells accounted for 78% of the market share of thin film battery 22% of the market. But with the progress and efficiency concentrating photovoltaic technology upgrading, construction costs will continue to reduce, concentrating solar power solar systems will be another important choice. An optical projections, according to the three condenser technology with the maturity and industrial scale, CPV costs will be lower than silicon and thin film solar technology in 2012 at or near parity level of the Internet.
Company 0.9MW solar garden tool concentrator construction and grid conditions
An optical three joint venture with U.S. $ 30,000,000 Emcore formed at the core of photovoltaic company (holding 60% of the three safety photoelectric), a joint venture set up in Wuhu, is responsible for concentrating solar R & D, production and sales. In technical cooperation, Emcore will have a free license on the ground of their receivers HCPV solar applications, modules and system design, manufacturing and testing process related intellectual property and proprietary technology.
An optical Golmud in Qinghai Three 3MW CPV solar energy demonstration project began construction in September 2009, one of the 1MW (according to the new standard for the 0.9MW)
At the end of September 2010 the grid. The completion of the 0.9MW power station using 500 times the lens, dual-axis tracking system, the average conversion efficiency of 25%.
From early October and power generation statistics, the average daily power generation of about 4500 degrees. Judging from the power plant operation, power output than the effect of crystalline silicon, small impact on the grid.
Remaining 2.1MW will adopt a new third generation system, 11 years of building began in April, plans to build 11 years in July. Plans to use 1000 times the condenser lens, thereby reducing the use of battery chips. Module size reduction, so that the sun tracking system more portable, more flexible installation and maintenance. System, a component of the original weight 400 kg, the next new system weight only 50 kg for each component, the materials used greatly reduced. Meanwhile, to further improve system reliability, module size reduction, so that the sun tracking system more portable, more flexible installation and maintenance. Decline in the cost of the new system, will lead to further reduced cost of power generation.