太阳能光伏电源系统的经济性分析

提出用现值分析法对太阳能光伏电源系统的经济性进行定量分析，并给出相应的计算公式和结果。     

BIPV中光伏阵列朝向和倾角对性能影响理论研究

通过倾斜而上太阳辐照量计算模型和太阳电池组件电学模型,对广州地区的光伏建筑一体化(BIPV)并网发电系统中,光伏阵列的朝向和倾角对并网发电系统性能的影响进行了分析和研究.结果发现:在广州地区,当光伏阵列朝向正南19°倾角时,光伏并网发电系统中有最大的年产出电能,而当阵列朝向偏离正南时,对于一定偏离角和倾角的光伏阵列,其在偏东南时比西南时有更大的年产出电能;在广州地区,光伏阵列朝向对阵列产电的影响不是很明显,当光伏阵列偏离正南时,对不同方位角,通过选择合适的倾角,可以使光伏阵列的年产出电能下降很少.     

深圳软件大厦BIPV并网光伏发电系统介绍

根据深圳软件大厦的现场条件,对光伏发电技术的应用进行研究。根据地理位置、日照条件、转换效率等因素,提出软件大厦光伏并网系统的总体设计方案,并对设计要素、设计核算及对环境的影响等进行详细阐述。     

国内外BIPV相关标准的发展现状

国内在光伏建筑一体化(BIPV)相关标准的制定方面起步较晚.以BIPV行业的发展现状为研究基础,对国内外BIPV相关标准的发展现状进行了调研、分析和比对,并针对国内BIPV标准制定发展缓慢的问题给出了3点建议,希望国内BIPV相关标准的制定工作能够尽快完善和发展.     

设有季节性储热系统太阳房的经济性分析

本文通过对太阳能储热系统的研究,介绍了太阳能地下储热装置的散热情况.分析了带有季节性储热系统太阳房的经济性与可行性.     

光伏系统经济性评价体系及其方法研究

讨论了在选择光伏系统安装站址时影响光伏系统经济性的各种因素，提出一种多层次多目标的光伏系统经济性综合评价体系结构，并介绍相应的评价方法。     

光伏建筑一体化（BIPV）并网电站的应用与发展

与建筑相结合的光伏并网电站是未来太阳能发展的重要方向之一,现在介绍国内外光伏建筑的现状以及未来的发展趋势,并对光伏建筑一体化的设计原则,光伏与建筑相结合的具体形式进行了阐述。     

光伏系统中小功率逆变电源现状

中小功率逆变电源是户用独立交流光伏系统中重要的器件之一,其可靠性和功率对推广光伏系统、有效用能、降低系统造价至关重要,因而各国的光伏专家们一直在努力开发实用的逆变电源,以促使该行业更好更快地发展。1 光伏系统中小功率逆变电源的技术现状逆变电源按变换方式可分为工频变换和高频变换。工频变换是利用分立器件或集成块产生50Hz方波信号,然后利用该信号去推动功率开关管,利用工频升压器产生220V交流电。这种逆变电源结构简单,工作可靠,但由于电路结构本身的缺陷,不适合于带感性负载,如电冰箱、电风扇、水泵、日光灯等。…     

BIPV并网光伏发电系统的设计

根据青岛火车站现场实际情况及建设单位、设计院的的具体要求,对BIPV技术和并网发电技术的综合应用进行研究,提出青岛站总体设计方案,并对设计要素和关键技术,对环境的影响和综合社会效益等进行详细阐述。     

BIPV系统斜面总辐照量计算及发电量估算

目前,用于光伏发电预测的物理模型中,斜面总辐照量参数的获取普遍采用通用斜面总辐照量公式,当用于含多安装角度的建筑集成光伏（BIPV）系统时,因其含有多参数、多级算式,导致计算过程繁琐,误差偏大。本文分析了不同地理位置最佳倾角、同一地理位置不同倾角、方位角对斜面辐照量的影响。在此基础上,提出了一种考虑BIPV系统各安装角度的系统斜面总辐照量计算方法,该方法较通用的斜面总辐照量公式简单、准确度高;讨论了该方法用于物理模型进行BIPV系统发电量估算的思路,通过工程试验数据对比,验证了本估算方法的优越性。     

光伏建筑一体化在城市应用中光反射问题的探讨

文章介绍了太阳能光伏发电技术的城市建筑一体化应用形式和目前市场上晶体硅太阳能电池板的减反射特性,比较了不同物质和材质的反射率,分析太阳能光伏建筑一体化应用对城市的光污染影响。     

海南师大3MW聚光型BIPV高效发电项目可行性分析

根据海南师范大学新校区实际情况,对低成本3MWBIPV发电技术进行研究,提出采用聚光型BIPV高效发电系统,可以节省项目投资的约40％,为光伏发电的推广应用提供新的思路。     

Analysis of spatial fixed PV arrays configurations to maximize energy harvesting in BIPV applications

This paper presents a new approach for efficient utilization of building integrated photovoltaic (BIPV) systems under partial shading conditions in urban areas. The aim of this study is to find out the best electrical configuration by analyzing annual energy generation of the same BIPV system, in terms of nominal power, without changing physical locations of the PV modules in the PV arrays. For this purpose, the spatial structure of the PV system including the PV modules and the surrounding obstacles is taken into account on the basis of virtual reality environment. In this study, chimneys which are located on the residential roof-top area are considered to create the effect of shading over the PV array. The locations of PV modules are kept stationary, which is the main point of this paper, while comparing the performances of the configurations with the same surrounding obstacles that causes partial shading conditions. The same spatial structure with twelve distinct PV array configurations is considered. The same settling conditions on the roof-top area allow fair comparisons between PV array configurations. The payback time analysis is also performed with considering local and global maximum power points (MPPs) of PV arrays by comparing the annual energy yield of the different configurations.     

Available remodeling simulation for a BIPV as a shading device

A building integrated photovoltaic system as a shading device is used as an application and remodeling model. This study applies the simulation program SOLCEL and the computational fluid dynamics method to cases with solar irradiance components analysis and a ventilated double façade remodeling of the BIPV. For the validation of the theoretical work, experimental results of the Samsung Institute of Engineering and Construction Company building are used with a wind velocity of the weather data of Suwon area, Korea, where the real building is located. A photovoltaic system can be used only to generate electricity, but if a photovoltaic module can be used as an element of a double envelope, it could be more useful at the point of view of renewable energy usage and night insulation. Increase of PV module surface temperature is negative for power generation by installing PV module as an element of double envelope. A reasonable combination between renewable energy usage and power generation should be well analyzed for better usage of natural energy to design a BIPV.     

Estimating thermal stress in BIPV modules

The thermal stress on building‐integrated photovoltaic modules (BIPV) in Espoo, Finland, was studied with field‐testing of amorphous silicon modules. Based on these results, the thermal stress at two other European locations (Paris and Lisbon) was estimated. The estimation procedure entailed thermal modelling of heat transfer in the façade with meteorological data as input. The results indicate that the thermal stress on BIPV modules in Lisbon is, in this case, approximately 50% higher that in Espoo and between 80 and 200% higher than in Paris, depending on the activation energy of the degradation process. The difference in stress between a BIPV module and a free‐standing module in Espoo was 50–200%. Copyright © 2006 John Wiley & Sons, Ltd.     

Simulation for an optimal application of BIPV through parameter variation

The degree of efficiency of Building Integrated Photovoltaic (BIPV) as a shading device and the variation of the electrical power generation over 1 year in a real building has already been experimentally investigated in my earlier research. In this paper, the influence of the angle of the solar cell panel, albedo of earth, building azimuth, and of solar cell panels under shading on the power generation are theoretically studied to further optimize BIPV implementation. For the validation of the theoretical work, experimental results of the Samsung Institute of Engineering and Construction Company building are used with a wind velocity of the weather data (TRY, test reference year) of Suwon area, Korea. The efficiency of the BIPV system as a shading device was compared at different months. In this work, the simulation program SOLCEL, for the calculation of a shading/sunlit area on solar cell module and facade, surface temperature of solar cell module, effective solar irradiance on solar cell module and the power generation of a BIPV as a shading device, was developed and validated. The SOLCEL can be applied to develop a multi functional Building Integrated Photovoltaic which could improve power generation, thermal comfort, natural lighting, cooling and heating, etc.     

BIPV for the high-temperature, high-rise, high-density cities of S. China: The related projects of PV HKU research group to facilitate BIPV application

In cities where high-rise commercial developments have overtaken industry as the peak electricity consumer, sophisticated building integrated photovoltaics (BIPV) can offset the demand by generating electricity during daytime peak consumption. The PV HKU Research Group's related projects, in a triple strategy of Technology Assessment, Technology Application & Regulatory Framework, aims to provide the government and community with the information, experience and appropriate legislation to facilitate widespread BIPV applications, and assist compliance with the Kyoto Protocol on CO₂ emissions reduction.     

Low light conditions modelling for building integrated photovoltaic (BIPV) systems

The low irradiance efficiency of photovoltaic modules is important to the optimization of BIPV systems. When photovoltaic modules are integrated into a building, architectural design considerations compete with maximizing photovoltaic energy production. As a result, BIPV arrays are often not facing south and are frequently mounted vertically. Under these conditions, a greater portion of the total sunlight striking the array is diffuse or at high angles of incidence. In northern latitudes a significant amount of the total yearly energy is produced at low light levels.A grid-connected array of BIPV modules integrated into the BCIT Technology Centre building in Burnaby, B.C. was used for assessing the accuracy of an energy performance model developed for BIPV systems. The BIPV system uses AC modules and a computerized data acquisition system for monitoring the performance of modules and inverters. The performance model was developed from analysis of the open circuit voltage, maximum power point voltage and maximum power point current of the individual modules comprising the BIPV array.The algorithm for calculating power output of the photovoltaic array is derived from the ideal diode equation using the single diode model of a photovoltaic cell. An empirically derived parameter modifies the equation. Once the parameters for different module technologies are established, it is possible to compare their annual performance in a BIPV system.