We present the steady-state computational analysis for predicting the log-duration availability of partially shaded photovoltaic (PV) systems with DC–DC converters. Shaded PV systems receive less than optimal sunlight due to obstructions such as trees or buildings. While shading can reduce the amount of energy produced by the solar panel, there are still some benefits to using shaded solar panels. Shading due to buildings, clouds, and other means affects PV system performance in terms of output power, fill factor, and efficiency. In this work, a Markov model with variable degradation rates and shading factors was employed for similar components in a fixed PV system configuration. We analyze the output power of the PV system computationally with constant transition and absorption duration over 20 years. The repair rate and transient transition rate are considered constant for the same state at the time for average output power estimation. The method includes all the possibilities for failure and shading associated with the successful functioning of the PV system for computational analysis. The average output power is presented for a 40% shading factor. One module transition and absorption time in the PV system with a 40% shading factor for a 20-year lifetime was found to be 3,36,369.43 W·h. The useful life ensured by one component in the PV system was found to be 7.9 years with constant shading and degradation factor.

我们提出了稳态计算分析，用于预测带有 DC-DC 转换器的部分遮蔽光伏 (PV) 系统的对数持续时间可用性。由于树木或建筑物等障碍物，阴影光伏系统接收到的阳光达不到最佳效果。虽然遮阳可以减少太阳能电池板产生的能量，但使用遮阳的太阳能电池板仍然有一些好处。建筑物、云和其他方式造成的阴影会影响光伏系统在输出功率、填充因子和效率方面的性能。在这项工作中，针对固定光伏系统配置中的类似组件采用了具有可变降解率和遮阳因子的马尔可夫模型。我们通过计算分析了 20 年来具有恒定转换和吸收持续时间的光伏系统的输出功率。对于平均输出功率估计时的相同状态，修复率和瞬态转变率被认为是恒定的。该方法包括与光伏系统成功运行相关的所有故障和阴影的可能性，以进行计算分析。平均输出功率是针对 40% 遮光系数给出的。遮阳因子为 40% 的光伏系统中，20 年使用寿命的一个模块转换和吸收时间为 3,36,369.43 W·h。在遮阳和退化系数恒定的情况下，光伏系统中的一个组件可确保的使用寿命为 7.9 年。