Parameter extraction method and system of multi-junction compound battery model, medium and equipment

• Main Authors: KWAK CHAN, CHAI SHIYI, CHEN HAO, CAO WEI, QIN HAIXIN
• Format: Patent
• Language: Chinese; English
• Published: 30.05.2023
• Subjects: CALCULATING; COMPUTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; GENERATION; GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRA-REDRADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, E.G. USINGPHOTOVOLTAIC [PV] MODULES; PHYSICS

The invention discloses a parameter extraction method and system of a multi-junction compound battery model, a medium and equipment. The method comprises the following steps: acquiring current and voltage actual measurement data of a three-junction photovoltaic battery based on a battery I-V characteristic test mode; establishing a battery voltage simulation model of the three-junction photovoltaic battery according to the actual measurement data of the current and the voltage; calculating a target equation associated with the battery voltage simulation model and the current and voltage actual measurement data based on a numerical iteration method, and obtaining a parameter corresponding to a minimum value of a calculation result of the target equation as an optimal parameter of the battery voltage simulation model; a battery voltage simulation model of the three-junction photovoltaic battery can be constructed to predict and analyze output electrical characteristics of the battery under different conditions.