Advanced Materials Research Vols. 608-609

Abstract: According to the photovoltaic working principle,the math model is established, because some parameters of the model are difficultly obtained in actual work, its application is limited. Considering that in pactice certain paramaters may be not obtained, the photovoltaic math model is properly simplified, thus the applied model is educed. For the exporting power of photovoltaic cell, the control model is established based dq coordinates. Calculating of simulation shows the model can be used in practice, it has practicability.

Abstract: A short-term generating capacity forecast model of a PV power station was proposed. The forecasting days were classified by the season and weather, and various neural network models were adopted to analyze the system. The radiation of PV power station was added to the model as an input parameter to improve the forecasting precision. The forecasting precisions based on the historical data of the actual PV power station in different seasons and weather were compared and analyzed. The results show that the proposed method can improve the forecasting precision of generating capacity.

Abstract: The study start with the generating capacity data of a 800kWp high power BIPV Grid-Connected PV power station in one year, analysis the condition that the solar cell performance and climate affection. Focus on analyzing inverter condition and yearly power generating capacity, monthly power generating capacity, daily power generating capacity.Time Period power generating capacity of Mono-si and polycrystalline silicon two types of small PV grid-connected power station.Analysis the problems on BIPV at same time and draws the corresponding conclusion.

Abstract: The excavation and exploitation of Fossil energy caused great pollution to the natural environment. Exploitation and utilization caused by environmental pollution, scarcity gave birth to the continuous development of new energy markets, the development of photovoltaic industry in China has achieved certain results, but compared to some developed countries, is still much room for development. Unsound domestic policies, immature technology, the PV industry in China is still very high dependence on the international market, is still at the low end of the international photovoltaic industry chain, in the face of increasingly fierce competition within the industry, China's PV industry is still facing series of challenges. SWOT model, with the analytic hierarchy process method, quantitative analysis of the environment for the development of the PV industry in China, from the perspective of the weight of the analytical development of photovoltaic industry characteristics and the situation facing the sustainable development for China's PV industry to provide a reference basis.

Abstract: With characteristics of rapid start-up, small heat resistance，uniform temperature and strong heat transfer ability, heat pipe has been used as a facility in cooling system of concentration photovoltaic system. Through numerical calculation and analysis, heat transfer characteristics of the cooling systems are carried out in this paper. Focusing on research of conventional rectangular fin and small fin fixed on cooling systems, and the heat pipe radiator that may adopted, the high-efficiency cooling system and method which are matched with the requirement of high energy flow density and notuniformity temperature are discussed. Finally, optimization design of the cooling system structure is suggested in the paper.

Abstract: Solar energy is an important energy for human and used in various technologies. Solar technologies are technologies which capture, convert and distribute solar energy. Studies focus on the solar energy to its importance or specific technology. There is, however, little qualitative information on status of solar energy utilizing and solar cell materials developing. This research has tended to focus on systematic analysis of global utilization and development of solar cell materials, rather than on specific technology. The results showed that from 1996 to 2010, the global solar energy utilization is exponential growth with years. The top ten solar energy utilization countries account for 90.7% of total. The highest efficiency cells are a type of tree-junction cells. Although thin-film technologies and emerging PV have some good properties, they still need to be improved, especially in efficiency.

Abstract: An embedded PV inverter Grid-Connected system based on STM32F103 whose main program is built with Keil uVision4 is designed here, which is consisted of control core unit, SPWM wave modulating unit, dead-band and optical isolating unit，IR2110 driver unit, three-phase inverter unit, RC filter unit, Grid signal acquisition unit and LCD320x240 unit. The dead time of the designed dead-band unit is adjustable, which can effectively prevent inverter subversion. The experimental results show that the system can not only meet the design requirements, but also make the Grid-Connected effect ideal.

Abstract: Development and utilization of solar and other renewable resources is the development trend on energy. Belong to one of the national industrial policy to support the strategic emerging industries to optimize the power structure, Energy conservation, environmental protection, the development of low-carbon economy has a positive effect. Different monolithic capacity of photovoltaic power generation project, in construction investment, the basic difference between the little and then be able to estimate the construction of photovoltaic power generation project investment, preliminary determination of investment projects in economic rationality.

Abstract: Firstly the research situation for grid-connected photovoltaic (PV) is introduced, then, the engineering mathematical model of PV cells is introduced. The perturbation and observation algorithm is chosen as the maximum power point tracking (MPPT) algorithm. The SPWM double-loop control strategy with outer voltage loop and inner current loop is described and a three-phase grid-connected photovoltaic model is established. The simulation results demonstrate the validity and correctness of the simulation model built in this paper.

Abstract: With the rising of fuel prices, the gradual depletion of conventional energy sources and the development of low-carbon economy, it has been paid more attention to energy effective utilization and new energy using. In this paper, considering the hybrid power of solar and diesel engine, the economy and carbon emissions of ocean-going fishing vessels are analyzed and studied. The characteristics of energy consumption and operating costs are discussed for ocean-going fishing vessels. The carbon emission calculation methods are introduced. Based on thus, taking the NPV and CO2e as measurement indicators, considering the different solar panel surfaces and the growth rate of fuel prices, the energy constitution for solar hybrid power of Ocean-going fishing vessels are researched, thus can provide the useful reference for the construction of carbon trading system.