SPICE synthesis of a solar cell model with irradiance and temperature evaluation

Summary This manuscript resumes the synthesis of a reliable electrical solar cell model in LTspice. The model improves correspondence with the physical I‐V and P‐V behavior, evaluating the temperature and irradiance dependence with simple approximations. A few electrical parameters into script lines synthesize the nonlinear branch relationship of a voltage‐controlled current source. The LTspice model includes new factors to improve the irradiance and temperature variation evaluation, which is uniform among solar cells.The results exhibit an average error of less than seven percent in an open‐source SPICE solution, similar to cumbersome computational efforts. The SPICE model enables the design of photovoltaic systems taking into account the temperature and irradiance factors with electrical components. This work shows the step‐by‐step process of constructing a reliable solar cell model in LTspice. The model includes new factors to improve the irradiance and temperature variation evaluation. The results show similar performance compared to cumbersome and not open‐source software applications. The SPICE model enables the design of photovoltaic systems from a circuits‐and‐systems approximation.