评估光伏电池板基于气候变化的降解率对联网太阳能系统逆变器可靠性的影响
Omid Alavi1,2,3, Ismail Kaaya1,2,3, Richard De Jong1,2,3
1IMO-IMOMEC, Hasselt University, Wetenschapspark 1, 3590, Diepenbeek, Belgium.
Heliyon
|February 15, 2024
概括
这项研究评估了光伏逆变器的可靠性,发现基于气候的退化显著影响电力电子产品的寿命. 考虑环境因素对于准确的可靠性评估和延长光伏系统寿命至关重要.
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
- 材料科学 材料科学 材料科学
背景情况:
- 光伏 (PV) 逆变器是太阳能系统中的关键组件.
- 评估功率电子设备的可靠性,特别是光伏逆变器,对于电网稳定性和经济可行性至关重要.
- 受环境因素影响的光伏降解会影响逆变器的性能和寿命.
研究的目的:
- 为了评估4kW电网连接的全桥光伏逆变器的可靠性.
- 在固定退化,基于气候的退化和没有退化的场景下比较逆变器可靠性.
- 分析气候特异性降解对电力电子产品寿命的影响.
主要方法:
- 利用基于物理的模型来估计基于气候的光伏降解率.
- 在三个不同的气候区域中模拟逆变器性能:热干,热湿和中等气候.
- 估计了光伏逆变器内的绝缘门双极晶体管 (IGBT) 的使用寿命.
主要成果:
- 光伏逆变器寿命估计根据位置和退化建模 (固定与基于气候) 有显著差异.
- 包括固定和基于气候的退化速率在内,在检查的位置延长了光伏逆变器的估计寿命.
- 发现基于气候的退化率对电力电子的可靠性评估有很大影响.
结论:
- 精确的光伏逆变器可靠性评估需要考虑基于气候的退化因素.
- 环境条件显著影响电源电子设备故障预测.
- 对于高太阳辐射和炎热的气候,建议略微提高设计参数,以确保逆变器的寿命.
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