期刊
IET RENEWABLE POWER GENERATION
卷 14, 期 11, 页码 1988-1996出版社
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/iet-rpg.2019.1377
关键词
solar cells; photovoltaic cells; photovoltaic power systems; diodes; maximum power point trackers; solar cell arrays; measurement uncertainty; mathematical model-driven analysis; significant terms; nonlinear exponential terms; simplified algorithm; unknown parameters; diode ideality factor; series resistance; single diode model PV module; manufacturer; PV module output power; different irradiance; datasheet values; PV module parameters; MPP estimation; photovoltaic module
资金
- Ministry of Electronics & Information Technology, Government of India
A study has been performed to extract the unknown parameters of a photovoltaic (PV) module using mathematical model-driven analysis. Neglecting the less significant terms, the number of non-linear exponential terms are reduced to develop a simplified algorithm to estimate five unknown parameters such as diode ideality factor, series resistance, shunt resistance, diode saturation current and photogenerated current of a single diode model PV module accurately with less computational complexities from the manufacturer's datasheet values. Substituting the estimated values of the unknown parameters, the PV module output power is obtained at different irradiance and temperature, which shows close co-ordination with the datasheet values. To improve the accuracy in the estimation of the PV module output using the proposed model, the nominal operating cell temperature (NOCT) is considered. The results of the proposed model are verified with the experimental output of two (one 315 Wp and another 3 Wp) PV modules, which shows better correlation with the proposed model considering NOCT. The measurement uncertainty to obtain the output power experimentally is not more than 6.88%.
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