高效光伏组件对电气系统设计的影响

依据2018年工信部公布的《光伏制造行业规范条件》内容及国家能源局"光伏领跑基地计划"中光伏组件实际应用情况,在分析高效光伏组件高转化效率、高发电量、高投资收益率等特点的基础上,阐述在光伏组件选择、光伏方阵设计、接线盒中二极管选型、汇流箱中熔断器选择、逆变器类型的确定、负极功能接地等设计环节中的影响和注意问题。     

光伏组件发电效率影响因素分析

本文以光伏组件为研究对象,结合目前现有光伏实验台的实验条件,重点分析了太阳辐照强度、组件温度、安装角度、环境温度对于光伏组件发电效率的影响,并得出相应结论、给出对应提升发电效率的建议。     

光伏建筑一体化组件及应用

对光伏建筑一体化的组件和工程应用进行了介绍。光伏建筑一体化作为太阳能应用的新形式有很多优势。光伏建筑组件主要分为晶体硅电池和薄膜电池两种类型,与建筑的结合形式主要有光伏幕墙、光伏屋顶和光伏遮阳板。     

屋面光伏组件的安装方式及其对屋面的要求

屋面光伏组件有建材型和建筑构件型两类,在屋面上的安装方式不仅要考虑日照,而且要因屋面形式而异？在工程上。组件的安装对屋面条件有要求,亦即光伏屋面的建设也应考虑荷重、耐风压、抗地震、排水、防水以及防雷等问题。     

光伏建筑一体化光伏组件表面清洁的效益分析

本文首先分析光伏建筑一体化中光伏组件清洁的重要性,分析国家现有光伏建筑一体化标准对太阳能光伏组件清洁和维护的具体要求,结合某实际项目的测试结果,对比分析该项目光伏组件清洗前后对系统转换效率、经济指标和环境指标的影响。     

光伏组件发电量户外实证研究

对于地面用晶体硅和薄膜光伏组件,传统的性能表征主要分为环境、力学、电性能、安全等几个方面。其中电性能表征局限于特定温度和辐照度条件,对于光伏组件户外实际应用过程,本文介绍了光伏组件发电量户外实证测试的三种方法:MPP跟踪的光伏组件发电量测试,基于光伏电流-电压特性测量的光伏组件发电量测试,以及多因子影响光伏组件发电量的评估方法。     

光伏组件在建筑上的应用探讨

目前,太阳能与建筑一体化虽然取得了长足进步,但还存在许多不完善的地方。许多案例都是牵强地与建筑结合在一起,对其是否和谐考虑较少,因此设计合理、有效、美观的光电建筑还需要深入研究。本文针对这一课题提出了自己的见解,论述了几种适应性的应用方式,供大家参考。     

建筑物分布式光伏发电系统设计探析

主要分析探讨建筑物分布式光伏系统工作原理、分类及其特点,并结合工程设计实践,探讨并总结建筑物分布式光伏发电系统设计方法及设计中应注意的问题,以供设计参考。     

非晶硅薄膜光伏组件力学性能分析

非晶硅薄膜光伏组件在机械荷载作用下,组件发生变形,影响组件输出效率.采用数值模拟方法并结合试验研究了非晶硅薄膜光伏组件的力学性能,提出了非晶硅薄膜光伏组件的简化力学模型并进行了有限元建模验证,同时对组件的等效厚度计算公式进行了探讨.试验、数值模拟结果表明:(1)在对非晶硅薄膜光伏组件力学分析时,根据精确度的不同,可分别采用纯玻璃板模型、叠合板模型代替原组件进行简化计算;(2)考虑最大应力相等计算得到的等效厚度与实测值仅相差2.8％,满足工程应用要求,建议在计算非晶硅薄膜光伏组件的等效厚度时采用最大应力相等公式进行计算;(3)光伏组件拥有两个中性层,分别位于上下两片玻璃中,但不在玻璃厚度方向的几何中心,而是靠近与中间层胶片粘结的界面;(4)当组件在5.4 kPa均布荷载作用下,基底玻璃的第一主应力为26.9 MPa,非晶硅薄膜电池承受的第一主应力(为0.19 MPa)较小,不会导致非晶硅薄膜电池发生破坏.     

中空双玻璃光伏组件的热性能研究

中空双玻璃光伏组件是一种新型双玻璃光伏组件,它不仅能产生电能而且还具有中空玻璃的建筑性能.通过试验测试和理论计算研究了中空双玻璃光伏组件的热性能,得出了中空双玻璃光伏组件的隔热性、温度分布、发电能力三者之间的关系.     

不同工艺类型地面用光伏组件热带季风气候地区户外发电情况对比与衰减情况分析

市面上同时流行HJT、TOPCon、PERC等类型光伏组件,目前已有试验室STC下不同工艺条件下光伏组件的发电情况数据,但在热带季风气候地区户外实际发电表现尚无实际验证,同时工信部对晶硅组件有着户外实际运行情况下的衰减率要求。本文设计了两组试验以验证不同工艺光伏组件的发电情况,进行对比和衰减率判定。结果显示,HJT组件要比N-TOPCon、P-TOPCon更优异,晶硅的衰减情况均满足工信部要求。     

光伏建筑一体化技术与工程应用

可持续发展是人类社会的共同追求,太阳能作为清洁、可再生能源,具有巨大的开发利用价值。光伏建筑一体化技术是将光伏发电与建筑完美结合,将光伏组件融合到建筑成为建筑的整体结构的一部分,实现太阳能利用与建筑物的完美结合,体现现代建筑的环保绿色设计理念。     

Simulation of partial shading on solar photovoltaic modules with experimental verification

With rapidly growing energy demands and increased consciousness about the environment, PV installations are being increasingly used in various applications such as communications and lighting. However, one of the major challenges in using a PV source is that they are often subjected to partial shading and rapid fluctuations of shading. In many cases, the PV arrays get partially shaded due to various reasons, resulting in lower energy production yields. This further leads to nonlinearities in characteristics, causing it to get more complicated if the entire array does not receive uniform insolation. In this study, a Simulink-based mathematical model of a PV system has been developed to simulate the performance of a PV system for the various conditions of partial shading. The simulated results have been compared with experimentally obtained results of the various configurations of shading that were used for the partial shading conditions on a commercially available PV module.     

Study on thermal performance of semi-transparent building-integrated photovoltaic glazings

This paper presents a one-dimensional transient heat transfer model, the Semi-transparent Photovoltaic module Heat Gain (SPVHG) model, for evaluating the heat gain of semi-transparent photovoltaic modules for building-integrated applications. The energy that is transmitted, absorbed and reflected in each element of the building-integrated photovoltaic (BIPV) modules such as solar cells and glass layers were considered in detail in the SPVHG model. Solar radiation model for inclined surface has been incorporated into the SPVHG model. The model is applicable to photovoltaic (PV) modules that have different orientations and inclinations. The annual total heat gain was evaluated by using the SPVHG model. The impacts of different parameters of the PV module were investigated. It was found that solar heat gain is the major component of the total heat gain. The area of solar cell in the PV module has significant effect on the total heat gain. However, the solar cell energy efficiency and the PV module's thickness have only a little influence on the total heat gain. The model was also validated by laboratory tests by using a calorimeter box apparatus and an adjustable solar simulator. The test results showed that the simulation model predicts the actual situation well.     

论光伏玻璃的发展潜力

本文介绍了光伏玻璃的定义、用途及特点,分析论述了其发展潜力。     

Optimum selection of photovoltaic modules using probabilistic approach based on capacity factor estimation

In this paper, the optimum selection of photovoltaic module using probabilistic techniques based on capacity factor estimation is proposed. The approach entails modelling the solar irradiance characteristics of the site by fitting probability distributions to the irradiance data for different hours of a typical day in each month of the year. The parameters of the probability distribution that best fits the solar irradiance data for a particular hour are thereafter used to estimate the capacity factor of different designs of PV modules. The module with the highest average capacity factor across all the months is identified as the best suited module for the given site. The proposed technique is investigated using 5 years data (2008–2012) of solar irradiance and temperature. The choice of the year of observation of the data was due to accuracy and completeness of the data for the period. The data sheets of 10 commercially available PV modules were also obtained from different manufacturers. The proposed method is simple, easy to use, and can be applied to any solar regimes around the world.     

嵌入模块式光伏组件体系设计与试验研究

提出了一种新型的嵌入模块式光伏组件体系,该新型光伏组件体系能够取代传统的屋顶围护构件,实现光伏技术与建筑的一体化集成。通过力学性能试验验证了该新型光伏组件体系在2 500 Pa外荷载作用下的挠度值满足建材的变形控制要求,应力值远小于材料的极限强度,可取代传统的屋顶围护构件。通过发电效率试验测得该新型光伏组件体系的最大发...     

再加热炉炉顶耐火纤维模块施工技术

介绍了再加热炉炉顶耐火纤维模块内衬的安装特点和施工工艺，提出了安装纤维模块的注意事项，指出采用该施工工艺，保证了再加热炉的工程质量，延长了其使用寿命，取得了良好的技术经济效益。