晶体硅光伏组件在服役过程中功率损失的理论计算与数值模拟研究-董娴-中山大学-solarbe文库

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- 0 - 董娴顺德中山大学太阳能研究院2018年12月· 威海晶体硅光伏组件在服役过程中功率损失的理论计算与数值模拟研究 - 1 - Xian DongShunDe SYSU Institute for Solar Energy, Sun Yat-sen UniversityDec 2018· Weihai Theoretical calculation and numerical simulation of power loss in crystalline silicon PV modules based on fielded degradation - 2 - Outline1. Background2. Loss analysis for solar cells and module process3. PoF based on fielded modules4. Reliability prediction model - 3 - Outline1. Background2. Loss analysis for solar cells and module process3. PoF based on fielded modules4. Reliability prediction model - 4 - 1. Background - 5 - Collaboration platformsØ State Key Laboratory of Optoelectronic Materials and TechnologiesØ South China Branch of NERCRE National Engineering Research Center of Renewable EnergyØ Guangdong Provincial Key Laboratory of Photovoltaic TechnologiesØ Cooperation Base of CPVT National Center of Supervision and Inspection on Solar Photovoltaic Products Quality and Sun Yat-Sen UniversityØ Key Laboratory of Solar Energy of Education Department, Guangdong Province - 6 - Experimental PV systemsAccelerating testsStandards for assessment of module quality/PV systems Research 2）规定的环境和使用条件（ defined condition;3）规定的任务和功能（ defined task/function;4）具体的可靠性指标（ detailed index. - 24 - 光伏组件在其漫长的寿命中将承受很多环境影响光照太阳Irradiation Sun温度热，霜冻，昼夜循环Temperature Heat, Frost, Diurnal cycle机械应力风，雪载荷，冰雹冲击Mechanical stress Wind,Snow load, Hail impact 大气盐雾，灰尘，沙粒，污染、氧气Air Salt, Dust, Sand, Pollution，Oxygen水分露水，雨水，霜Moisture Dew, Rain, Frost 湿度Humidity - 25 - 常规晶硅组件结构典型区域A 区电池正面中央区域（热/光）heatlightB区电池正面边沿及间隙（光/水气）lightmoistureC区电池背面中央区域（热/水汽）heatmoistureD区电池背面边沿区域（水汽）moisture组件结构及典型区域划分 Module structure Typical area - 26 - Distribution of 6 climates types in China （ From GB/T 4797.1-2005 Environmental conditions appearing in nature of electric and electronic products-Temperature and humidity）xerothermic cold coldcold-warmIcold-warmII sub-humid heat hygrothermalwarmwarm SM55Solarex （ cold- xerothermic– cold-warm - warm- sub-humid heat - hygrothermal）BP270 - 27 - （注 Solarex组件于 2009年被挑选其中功率较均匀的 144块组件再次安装使用；西门子组件共 2051块，目前挑选其中 500块进行 STC条件下的测试； SM75组件分别取党河 125块大风山 112块在 STC条件下测试。）品牌数量测试时间 Pm Im Vm Isc Voc FFSolarex 144 2009 96 87.6 109.5 90.4 97.7 106.82014 94.6 86.2 109.9 88.8 98.8 106.82015 94.6 85.7 110.4 88.2 99.1 107.12016 93.5 85.3 109.7 87.7 93.5 107.2SM75 125（党河） 2015 92.8 96.5 96.0 87.0 99.3 96.4 112（大风山） 2015 87.1 97.8 94.9 82.7 99.1 67.8Siemens Solar 500 2014 75.1 88 85.2 92.4 97.6 83不同运行环境下不同的衰减模式对组件功率的影响不同Degradation rate of modules from different climatesSTC/rated value Poly moduleØGlass 3.2mmØEVAØlaminatedØBacksheet Tedlar onlyØSolar cell thckness 425μm, size 101 101mmØRated value P42.6Wp Voc20.8V Isc3.04A Vm15.1V Im2.82A Case1Tracking degradation of Solarex modules method reference aged modulecrosslinking-degree exylene extraction 8 0 -9 0 7 3 marginal partlight transmittance ultraviolet spectrophotometer 9 1 -9 3 8 0melting point DSC 6 2 -7 2 7 1heat of solidification DSC 5 0 .5 4VA content TGA 2 8 -3 3 3 3PH PH meter 5 .6 9 5 .0 9yellowness index colorimeter 0 .9 1 1 .5tensile strength Electronic Pull and Push Strength Caculator 1 8 3breakage elongation 8 0 0 6 9 7IR IR spectrophotometer - acetic acidEVA Analysis