def setUp(self): self.short_circuit_current = 3.87 # [A] self.open_circuit_voltage = 42.1 # [V] self.temperature_voltage_coefficient = -0.080 # [V/ºC] self.temperature_current_coefficient = ( 0.065 / 100 ) * self.short_circuit_current # ([%/ºC] / [100%]) * [A] = [A/ºC] series_resistance = 0.56 shunt_resistance = 1862 diode_quality_factor = 1.343 number_of_cells_in_series = 72 number_of_voltage_decimal_digits = 1 self.single_diode_model = SingleDiodeModel( self.short_circuit_current, self.open_circuit_voltage, number_of_cells_in_series, number_of_voltage_decimal_digits=number_of_voltage_decimal_digits, temperature_voltage_coefficient=self. temperature_voltage_coefficient, temperature_current_coefficient=self. temperature_current_coefficient, series_resistance=series_resistance, shunt_resistance=shunt_resistance, diode_quality_factor=diode_quality_factor)
def __get_single_diode_model_and_calculate( self, operating_temperature, actual_irradiance, partial_shading_ratio, number_of_corresponding_modules): overall_number_of_cells_in_series = self.number_of_cells_in_series * number_of_corresponding_modules overall_open_circuit_voltage = self.open_circuit_voltage * number_of_corresponding_modules single_diode_model = SingleDiodeModel( self.short_circuit_current, overall_open_circuit_voltage, overall_number_of_cells_in_series, number_of_voltage_decimal_digits=self. number_of_voltage_decimal_digits, temperature_voltage_coefficient=self. temperature_voltage_coefficient, temperature_current_coefficient=self. temperature_current_coefficient, series_resistance=self.series_resistance, shunt_resistance=self.shunt_resistance, diode_quality_factor=self.diode_quality_factor) actual_irradiance_for_the_group_of_modules = actual_irradiance * partial_shading_ratio single_diode_model.calculate( operating_temperature, actual_irradiance_for_the_group_of_modules) return single_diode_model
short_circuit_current = 5.75 open_circuit_voltage = 22.5 temperature_current_coefficient = 0.04 series_resistance = 0.115820201147 shunt_resistance = 37173.5612907 diode_quality_factor = 1.27873896365 number_of_series_connected_cells = 36 number_of_voltage_decimal_digits = 1 single_diode_model = SingleDiodeModel( short_circuit_current, open_circuit_voltage, number_of_series_connected_cells, number_of_voltage_decimal_digits=number_of_voltage_decimal_digits, temperature_current_coefficient=temperature_current_coefficient, series_resistance=series_resistance, shunt_resistance=shunt_resistance, diode_quality_factor=diode_quality_factor) # operating_temperature = 25 + 273 operating_temperature = 35 + 273 actual_irradiance = 1000 single_diode_model.calculate(operating_temperature, actual_irradiance) # voltages = single_diode_model.voltages # currents = single_diode_model.currents # powers = single_diode_model.powers