基于Simulink光伏电池建模及其输出特性仿真研究

研究光伏电池物理模型,利用Matlab/Simulink平台,搭建其动态仿真模型。该模型可以模拟变化的光伏参数、光照强度、环境温度,能够模拟外界环境下的I-U、P-U特性曲线,快速输出动态响应下光伏发电功率。仿真结果得到了光伏电池的输出特性呈非线性,且可用于对光伏系统的动态仿真研究,证明该仿真模型的合理性与实用性,同时为优化光伏发电能效、搭建光伏系统组提供良好的理论依据和仿真基础。     

基于Matlab／Simulink的光伏电池仿真模型研究

介绍一种以输出特性为基础的光伏电池数学模型,该模型通过光伏电池的4个标准性能参数拟合出电池输出特性,它能模拟光伏阵列在任意太阳辐射强度、环境温度下的输出特性。最后,在Matlab／Simulink环境下建立光伏电池的仿真模型,将仿真结果与实测结果进行对比．验证该模型的准确性。     

基于Matlab/Simulink光伏电池模型的研究

提出一种以太阳能电池数学模型为基础,在Matlab/Simulink环境下建立的光伏电池仿真模型。与其他常用建模方法相比,该模型结构简化,易于操作,能更好地描述光伏阵列的电气特性。该模型还考虑了在任意光强和温度下串联电阻Rs的影响,并进行了太阳能电池输出特性试验。理论估算与实际测量结果比较,两者误差在工程应用允许的精度6%内,与传统方法相比,精度有所提高,为整个光伏系统进一步研究提供参考价值。     

半导体激光器功率输出特性的理论分析及实验研究

本文从理论上及实验上分析研究了半导体激光器(LD)功率输出特性与其腔面反射率之间的关系.研究结果表明,通过改变LD腔面反射率,可以使其输出功率增大,也可以使其转变为新的光电器件,如超辐射发光二极管(SLD)或行波半导体激光放大器(TW-SLA)等等.在大量实验数据的基础之上建立了LD输出功率曲线阈值与腔面反射率关系的经验公式,确定了LD最佳输出功率腔面反射率以及SLD和TW-SLA的工作条件.     

旋转变压器输出特性的分析

主要对雷达伺服系统中，随动工作方式焉的旋转变压器输出特性进行了分析，给出了符合工程设计的输出特性数学描述方法。     

晶体三极管输入/输出特性曲线的测试方法

本文针对晶体三极管输入/输出特性曲线的测量给出两种方法,一种是采用仿真实验Multisim进行测试,另外一种方法是利用晶体三极管的分立元件电路进行测试,并通过比较两种测试方法测得的数据对两种测试方法进行了对比分析和总结。     

光伏电池输出特性与最大功率点跟踪的仿真分析

根据太阳能光伏电池的等效电路特点,建立了相应的光伏电池组件的仿真模型。该模型可以实现在不同光照强度和温度下光伏组件的输出特性,在此模型基础上研究了光伏组件最大功率追踪方法(MPPT)。在众多最大功率追踪方法中,扰动法有着比较优秀的控制效果。针对最常用的最大功率点跟踪方法-扰动观察法,提出一种改进型的扰动法算法,通过仿真结果和实验证明该方法在一定程度上可解决光伏电池输出非线性的问题,有效避免跟踪偏差,提高光伏电池的输出效率,且动态响应速度快,使光伏系统具有良好的动态和稳态性能。     

基于Multisim的晶体管输出特性曲线测试

Multisim是一个专门用于电子线路仿真与设计的EDA工具软件。简要介绍了利用Multisim的仿真分析法－－直流扫描分析法和后处理器进行晶体管输出特性曲线测试的方法。     

基于Matlab的光伏电池板的建模与仿真

对光伏电池板的工作原理进行简要分析并给出了其等效电路,建立了光伏池板的数学模型,在matlab/simulink仿真环境下搭建新的光伏池板的仿真模型。基于该新仿真模型模拟了不同太阳光照强度、不同环境温度下的电流—电压(I-V)、功率—电压(P-V)特性曲线。仿真结果与理论上的I-V、P-V曲线完全吻合,证明了新仿真模型的合理性与实用性。对于光伏电池板在现实中的应用具有重要实际意义并对利用恒压法实现光伏电池板的最大功率点跟踪提供理论依据。     

基于双结模型非理想太阳能电池伏安特性参数数值分析

提出了一种对于太阳电池光照条件和暗特性条件下对其伏安特性全段进行拟合提取参数的改进方法.对太阳电池J-V曲线进行分段, 提取每段的4个关键参数: 串联电阻(Rs)、并联电阻(Rsh)、品质因子(n)、反向饱和电流密度(J0).这种方法采用了双结电路模型法, 并以CdS/CdTe薄膜电池为例进行了光照下和暗特性分析, 得到了比单结电流模型更多的参数, 并且具有较高的拟合精度(误差<0.7%).     

光强和温度对多结太阳电池的影响研究

基于模拟太阳光源的方法,在室内研究了在不同光照强度、不同工作温度下GaAs多结太阳电池的输出特性.通过实验得出:随着光源辐照强度的增加,太阳电池的特性参数:短路电流Isc线性增加,开路电压Voc对数增加,最大输出功率P线性增加,光电转换效率η随聚光比增加到一定程度后减小.对比分析了光强和温度对电池输出特性的影响,数据结...     

Far-infrared electroluminescence characteristics of an InGaP/InGaAs/Ge triple-junction solar cell under forward DC bias

The far-infrared electroluminescence characteristics of an InGaP/InGaAs/Ge solar cell are investigated under forward DC bias at room temperature in dark conditions. An electroluminescence viewgraph shows the clear device structures, and the electroluminescence intensity is shown to increases exponentially with bias voltage and linearly with bias current. The results can be interpreted using an equivalent circuit of a single ideal diode model for triple-junction solar cells. The good fit between the measured and calculated data proves the above conclusions. This work is of guiding significance for current solar cell testing and research.     

Concentrator multijunction solar cell characteristics under variable intensity and temperature

The performance of multijunction solar cells has been measured over a range of temperatures and illumination intensities. Temperature coefficients have been extracted for three‐junction cell designs that are in production and under development. A simple diode model is applied to the three‐junction performance as a means to predict performance under operating conditions outside the test range. These data may be useful in guiding the future optimization of concentrator solar cells and systems. Copyright © 2008 John Wiley & Sons, Ltd.     

Matlab软件在数学建模中的应用分析

Matlab软件作为最为专业的科学仿真计算软件,其最大的特点就是具有高效的矩阵计算及仿真能力,并在算法开发、仿真建模、控制系统及工程绘图等领域具有明显的应用优势,是当前数学模型构建中最常采用的软件,针对此,本文将以Matlab软件特点为研究基点,分析了数学建模一般步骤,并通过应用实例分析该软件在数学建模中的具体应用.     

Multijunction solar cell model for translating I–V characteristics as a function of irradiance,spectrum, and cell temperature

We describe here a lumped diode model for concentrator multijunction solar cells, in which the temperature, irradiance and spectrum dependences are explicitly included. Moreover an experimental method based on it for the prediction of the I‐V curve under any irradiance‐spectrum‐temperature conditions from a single input measurement is proposed and applied to a set of commercial triple‐junction solar cells in order to demonstrate its validity. Component ‘isotype’ cells are used as reference cells for intensity and spectrum, sparing the measurement of light spectrum and cell spectral response. Finally, a mean RMS prediction error of 0.85% over a range of 100X‐25°C to 700X‐75°C is reported for the whole set when the model parameters inherent in the cell are assumed to be the same for every sample. If optimum parameters are extracted for every cell, the RMS error is reduced to 0.53%. Copyright © 2010 John Wiley & Sons, Ltd.     

Spectral response and energy output of concentrator multijunction solar cells

The spectral response of concentrator multijunction solar cells has been measured over a temperature range of 25–75°C. These data are combined with reference spectra representing the AM1·5 standard as well as annual spectral irradiance at representative geographical locations. The results suggest that higher performance in the field may be obtained if multijunction cells are designed for an effective air mass higher than AM1·5. Copyright © 2008 John Wiley & Sons, Ltd.     

Thermal behaviour of new crystalline semitransparent solar cell structure

This paper presents the structure of a novel semitransparent solar cell and its thermal behaviour, which cell can be used for building integrated applications. The crystalline self-made test cells can be manufactured using basic semiconductor technological steps, arbitrary pattern of holes can be etched. We report on two alternative methods for thermal behaviour characterisation of the novel semitransparent solar cell compared to non-transparent solar cells. The first method is thermal dependence and High Temperature Store (HTS)—condition A testing and the second is application of conventional thermal imaging in combination with electrical current heating of the solar cell. I–V characteristic measurements at preset temperatures demonstrate that the new semitransparent sample despite the throughout holes can be as effective as the without hole solar cell. IR imaging results reveal the localised resistive heating zones or shunting in the test cells. This research examines the influence of the through-holes on the thermal properties of solar cells.     

硅烷偶联剂对太阳电池铝浆性能的影响及分析

在晶体硅太阳电池制造过程中,铝电极是通过丝网印刷-烘干-烧结制成的。该过程中铝电极膜层与传送网带发生相对摩擦,易导致铝膜表面产生划痕、起灰。重点研究了添加不同质量分数w(硅烷偶联剂)(0.5%~3.0%)对铝浆有机载体的表面张力、铝膜表面划痕、起灰、导电性能的影响规律。结果表明:当w(硅烷偶联剂)为2.5%时,有机载体的表面张力可从约30mN/m降低至25.69mN/m,提高了铝粉颗粒之间以及铝膜与硅片之间的黏附作用,从而减少划痕和灰化,进而可使铝电极的接触电阻由0.60?降低至0.19?。     

YAG激光器输出特性的分析

介绍了激光共振电离质谱学实验中的两台YAG激光器的结构原理及其能量转换机制，并结合实际使用情况对影响其输出特性的因素进行了分析，其输出特性包括：激光器的阈值；激光器的输出能量、效率和最佳透过率；激光器输出光束的稳定性、光谱特性、偏振特性和方向性等。激光器调试结果达到了设计指标。