CPV350 电焊机与弧焊机器人系统的接口设计

介绍了CPV350型逆变电焊机与弧焊机器人控制系统的连接方法。通过分析CPV350电焊机的接口特点,设计了系统连接的硬件方案;并开发了相应的软件模块,成功的实现了该电焊机与弧焊机器人系统的集成。     

CPV（1）分段法在间歇过程中的应用

研究一种批次过程阶段划分方法．首先,将间歇过程数据按照批次方向展开成二维数据,某采样时刻到末采样时刻的数据构成对应于该时刻的数据段．然后对每一数据段进行主元分析,获得第一主元贡献率．最后,采用第一主元贡献率的变化来表征批次内部阶段的转变,对批次过程划分阶段．将该方法应用于青霉素仿真发酵过程,分段结果明显与实际菌体生长阶段一致．将该方法应用于实际的半导体生产过程数据中,分段结果验证了分段理论的有效性．     

计算机泛视觉系统中多传感器信息融合技术研究

建立了航空透明件的超声无损检测系统,把多传感器的检测信息和人的感知信息利用模糊积分进行融合,实现对航空透明件的缺陷识别。实验结果表明,采用多传感器信息融合技术可以降低系统的不确定性,使超声检测与识别系统的性能提高。     

Results of a gallium phosphide photovoltaic junction with an AR coating under concentration of natural sunlight

A gallium phosphide (GaP) photovoltaic junction is grown by molecular beam epitaxy (MBE) on a GaP substrate. An anti-reflection coating of polymethyl methacrylate (PMMA) is applied and the cell is measured under concentrations of 1× and 10.7× in an outdoor setting. Efficiencies up to 2.6% and open circuit voltages up to 1.57 V are reported.     

A miniature concentrating photovoltaic and thermal system

A novel miniature concentrating PV (MCPV) system is presented and analyzed. The system is producing both electrical and thermal energy, which is supplied to a nearby consumer. In contrast to PV/thermal (PV/T) flat collectors, the heat from an MCPV collector is not limited to low-temperature applications. The work reported here refers to the evaluation and preliminary design of the MCPV approach. The heat transport system, the electric and thermal performance, the manufacturing cost, and the resulting cost of energy in case of domestic water heating have been analyzed. The results show that the new approach has promising prospects.     

PLC在CPV太阳能跟踪系统上应用

第三代太阳能电池采用聚光光伏技术（Concentrated Photovoltaic,cPv）,与第一代晶硅电池和第二代薄膜电池相比,它具有更高的转换效率、更好的耐高温性能和更环保的资源利用优势.太阳能跟踪系统是CPV技术关键的组成部分,它的追日效果直接影响着CPV电池的转换效率.本文从太阳能跟踪系统的原理出发,针对CPV系统追日的高精度要求和国内光伏产业的0EM市场现况,着重阐述了一种以SIMAT1C S7-1200 PLC为核心的低成本解决方案在具体项目中的应用.     

Performance of a concentrated photovoltaic energy system with static linear Fresnel lenses

A new type of greenhouse with linear Fresnel lenses in the cover performing as a concentrated photovoltaic (CPV) system is presented. The CPV system retains all direct solar radiation, while diffuse solar radiation passes through and enters into the greenhouse cultivation system. The removal of all direct radiation will block up to 77% of the solar energy from entering the greenhouse in summer, reducing the required cooling capacity by about a factor 4. This drastically reduce the need for cooling in the summer and reduce the use of screens or lime coating to reflect or block radiation.All of the direct radiation is concentrated by a factor of 25 on a photovoltaic/thermal (PV/T) module and converted to electrical and thermal (hot water) energy. The PV/T module is kept in position by a tracking system based on two electric motors and steel cables. The energy consumption of the tracking system, ca. 0.51 W m⁻², is less than 2% of the generated electric power yield. A peak power of 38 W m⁻² electrical output was measured at 792 W m⁻² incoming radiation and a peak power of 170 W m⁻² thermal output was measured at 630 W m⁻² incoming radiation of. Incoming direct radiation resulted in a thermal yield of 56% and an electric yield of 11%: a combined efficiency of 67%. The annual electrical energy production of the prototype system is estimated to be 29 kW h m⁻² and the thermal yield at 518 MJ m⁻². The collected thermal energy can be stored and used for winter heating. The generated electrical energy can be supplied to the grid, extra cooling with a pad and fan system and/or a desalination system. The obtained results show a promising system for the lighting and temperature control of a greenhouse system and building roofs, providing simultaneous electricity and heat. It is shown that the energy contribution is sufficient for the heating demand of well-isolated greenhouses located in north European countries.     

聚光光伏电池及系统的研究现状

首先总结了国内外在聚光光伏发电方面的权威研究机构及公司情况,介绍了目前聚光光伏发电技术及系统的最新研究进展情况及存在的技术难点;其次综述了近几年国内外在聚光太阳电池方面的最新研究进展,并介绍了聚光光伏中的冷却问题;最后对聚光光伏发电技术的发展前景进行了展望。