Delta Electronics Producing Spectrolab Cells

Delta Electronics (TSE:2308), today announced that it has successfully completed the development of a certified and cost effective assembly process for the manufacturing of concentrating photovoltaic (CPV) modules, a new and exciting solar cell technology that boasts greater than 35% efficiency. Collaborated with Spectrolab, who originally developed the underlying technology, Delta aims to enable wide availability of CPV modules by its advanced assembly process and bring about a superior alternative to the burgeoning solar power industry.

Spectrolab, Inc., a wholly owned subsidiary of Boeing, is the world leader in the development of highly efficient terrestrial concentrator solar cells. It recently demonstration converting 40.7 percent of the sun’s energy into electricity.

"We believe that the solar cell receiver assembly process developed by Delta will enable Spectrolab to offer its customers the opportunity to obtain a complete receiver design that has been proven reliable, thus enabling our customers to speed up their entry into the CPV market," said Dr. Raed Sherif, General Manager of the terrestrial photovoltaic products at Spectrolab. "Spectrolab will continue to focus its efforts on developing next generation high-efficiency solar cells, and on increasing factory production capacity in order to improve the overall system economics."

"There is a great deal of growth happening in this market because CPV is offering higher efficiency leading to lower cents per kWh," said Roland Chiang, Director of the CPBG R&D Center at Delta Electronics. "Our cooperation with Spectrolab, coupled with Delta's expertise in module assembly, inverter technology, thermal management, optical design and testing, and material expertise, will ensure that Delta is able to introduce its own CPV solution in the near future. Delta is well positioned in the multibillion dollar PV industry to provide a variety of high-efficiency PV solutions and we are happy to add this technology to our growing green energy portfolio."

Delta Group is the world's largest provider of switching power supplies and a major source for power management solutions, components, visual displays, industrial automation, networking products, and renewable energy solutions.

Comments

[Luigi Aronson]

When they figure the efficiency of conversion of sunlight, do they figure from the area of the pre-concentrated sunlight or from the area of the cell itself.

Otherwise, how do you compare system efficiency?

[Yosef]

The efficiency of a CPV system is usually the optical efficiency times the electrical efficiency - meaning the energy lost due to concentration is counted.

Interestingly, I couldn't find what concentration technology will be used for the modules.

[Thomas Pedersen]

I'm pretty sure the rated efficiency of the Spectrolab cell is the ratio of electricity produced to solar energy reaching the cell. That means that it does not take into account concentration loss. It does, however, mean that if you concentrate sunlight x times, you get x times as much power from the cell (up to a certain limit, probably dependent on cell temperature).

[Calamity]

Cell temperature could be a serious problem. Even with the most advanced cooling and thermal management systems, the strain will be enormous. How long, on average, will these cells last under 1000 suns?

Off course, a lower concentration could be used. But would it be possible to use some sort of low-e coating on the cell? That could block most of the infrared radiation so there should be a lower operating temperature which gives higher efficiency and life of the cells. But it will no doubt also block some of the useful wavelenghts...

So how would that work out?

[Don Wagner]

One of the most efficient ways to do this is to separate the spectrum then use the wavelengths where that cell is most efficient. There is an article about a 42.8% efficiency at http://www.renewableenergyaccess.com/rea/news/story?id=49483.
Sol Solution has a simpler lens for separating and concentrating the sunlight at
http://www.sol-solution.net

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What other power supplies are compatible with my computer?
The power supply in my Acer AX1700-U3700A burnt out and I havent been able to locate anyone that has one for sale. The PSU is made by Delta Electronics, model #DPS-220OUB A.It is much smaller than most desktop power supplies, height-2in, width-3.5in, and approximatly 8in long. Are there any power supplies manufactured by other companies that would be compatible with my computer?.

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