Dynamic Model Parameter Estimation in Photovoltaic Modules
Abstract
In the present work, it is sought to develop a tool that allows perform the parameter estimation of a representative model of photovoltaic panels to give a future implementation and field testing. The development of the algorithm was carried out in MATLAB/Simulink, using as a reference the On-line work Identification of Photovoltaic Arrays’ Dynamic Parameters, where the methodology for the application of the Dynamic Regressor Extension and Mixing is delivered, from DREM, in a circuit model that includes the effect of parasitic capacitance. The operation of the tool was evaluated through a block that simulates the operation of a photovoltaic panel, for which, its parameters, the temperature and irradiance values. From the voltage and current signals, the designed tool is executed and the development of three estimators for different photovoltaic models, which are capable of calculate the values introduced from the voltage and current signals. On the other hand, the response of the estimators designed was also tested against changes in the operation of a photovoltaic panel, achieving the estimate in approximately 10 [ms]. Given the results obtained, using a block that represents the operation of a photovoltaic panel, the experimental setup began, which includes the attachment of a boost converter, therefore, it is expected to evaluate the tool with voltage signals and experimental stream in the near future.
Keywords
Photovoltaic modules, Dynamic model, Model Parameter