Fault diagnosis method of solar cell based on inverse inference of I-V curves
In this paper,a fault diagnosis strategy for photovoltaic modules based on I-V curve inverse method is proposed.This strategy does not need to monitor the surface irradiance and average temperature of the solar cell in real time.After extracting the model parameters,the I-V curve library under different irradiance and solar cell temperature is calculated.The open circuit voltage,short circuit current and maximum power point voltage and current of the photovoltaic module are measured during operation to determine whether the module is faulty.By building experimental equipment to simulate typical faults and using this method to judge,the results show that the method proposed in this paper can effectively monitor the faults of components.Using this method,a single-board fault monitoring module is developed to realize online fault diagnosis of photovoltaic modules,which improves the accuracy of fault diagnosis of photovoltaic modules and the reliability and economy of photovoltaic power station operation.
solar cellparameter identificationmaximum power pointinverse derivation of I-V curve
万方数据
维普
