一种基于功率转换器的创新技术,用于在自然辐射下进行现场光伏I-V表征
Mohammed Rhiat1,2, Firyal Latrache3, Mustapha Melhaoui4
1LGEM Laboratory, Mohammed First University, Oujda, Morocco.
Scientific reports
|February 9, 2026
概括
一个新的光伏曲线追踪器在真实阳光下提取太阳能电池板I-V和P-V特性和模型参数. 该系统准确地描述光伏电池板,用于性能监测和分析.
科学领域:
- 电气工程 电气工程
- 可再生能源系统可再生能源系统
- 光伏技术 光伏技术
背景情况:
- 对光伏 (PV) 电池板进行准确的表征对于性能监测和降解分析至关重要.
- 目前用于提取光伏电池板参数的方法可能很复杂或需要专门的实验室条件.
- 需要一个独立的,准确的,多功能系统,用于在现场的光伏参数提取.
研究的目的:
- 开发和验证一个独立的光伏曲线追踪器,用于提取电流-电压 (I-V) 和功率-电压 (P-V) 特性.
- 在真实阳光条件下确定光伏电池板多重二极管模型 (MDM) 的五个关键参数.
- 为了证明系统的准确性和在光伏性能评估和教育中的潜在应用.
主要方法:
- 设计了一个定制的同步提升转换器作为可编程的电子负载,由PWM信号控制.
- 集成的电压,电流,太阳辐射和温度传感器,用于全面的数据采集.
- 采用非线性最小平方拟合算法 (Levenberg-Marquardt) 来精确地从I-V曲线中提取PV参数.
主要成果:
- 该系统成功地在真实阳光下提取了30W光伏面板的I-V和P-V曲线.
- 实验验证显示估计和测量I-V曲线几乎相同,最大电流偏差为41.5mA.
- 重建的P-V曲线与数据表值密切匹配,达到27W的最大功率,而STC的额定功率为30W.
结论:
- 拟议的独立光伏曲线追踪器准确地提取光伏面板特征和模型参数.
- 该方法证明了高精度,适用于现实世界的光伏性能监测和降解研究.
- 该系统为教育目的提供了有价值的工具,以了解光伏设备的行为.
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