Research Papers

A Simple Parameter Estimation Approach to Modeling of Photovoltaic Modules Based on Datasheet Values

[+] Author and Article Information
Xiangsai Feng

Shanghai Solar Energy Research Center,
Shanghai 201100, China
e-mail: fengxiangsai@solarcell.net.cn

Xiangyun Qing

School of Information Science and Engineering,
East China University of Science
and Technology,
Shanghai 200237, China
e-mail: xytsing@ecust.edu.cn

C. Y. Chung

Department of Electrical and
Computer Engineering,
University of Saskatchewan,
Saskatoon, SK S7N 5A9, Canada
e-mail: c.y.chung@usask.ca

Hongqiao Qiao

Shanghai Solar Energy Research Center,
Shanghai 201100, China
e-mail: qiaohongqiao@solarcell.net.cn

Xunchun Wang

Shanghai Solar Energy Research Center,
Shanghai 201100, China
e-mail: wangxunchun@solarcell.net.cn

Xinkan Zhao

Shanghai Solar Energy Research Center,
Shanghai 201100, China
e-mail: zhaoxinkan@solarcell.net.cn

1Corresponding author.

Contributed by the Solar Energy Division of ASME for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING: INCLUDING WIND ENERGY AND BUILDING ENERGY CONSERVATION. Manuscript received January 24, 2016; final manuscript received July 21, 2016; published online August 16, 2016. Assoc. Editor: Geoffrey T. Klise.

J. Sol. Energy Eng 138(5), 051010 (Aug 16, 2016) (8 pages) Paper No: SOL-16-1048; doi: 10.1115/1.4034357 History: Received January 24, 2016; Revised July 21, 2016

This work presents a simple parameter estimation approach for a photovoltaic (PV) module using a single-diode five-parameter electrical model. The proposed approach only uses the information from manufacturer datasheet without requiring a specific experimental procedure or a curve extractor. The number of parameters to be determined is first reduced from five to two by gaining insight into electrical equations of the model at the standard test conditions (STCs). A nonlinear least square (NLS) objective function is then constructed and minimized by a complete scan for all possible values of the two parameters within some specific ranges based on their physical meaning. Consequently, the single-diode five-parameter electrical model at the STC is determined based on two optimal parameter values. Besides, a PV full characteristic model with consideration of both the irradiance and temperature dependencies is also constructed by using the data at the nominal operating cell temperature (NOCT) test conditions. The proposed approach is easy to implement and free of the convergence problem. The evaluations on several PV modules show that the proposed approach is capable of extracting accurate estimates of the model parameters.

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Fig. 1

The equivalent circuit of the photovoltaic module

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Fig. 2

Proposed approach flowchart for determination of the PV module parameters at the STC

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Fig. 4

The I–V characteristics and out power characteristics of TSM-PD05.05 (250 W) module

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Fig. 3

Relationship between the irradiance and the open circuit voltage of PV module KC 200GT

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Fig. 5

The I–V characteristics and experimental data of AD285M6-Ab module

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Fig. 6

The I–V characteristics of TSM-PD05.05(250 W) module at different irradiance conditions at the NOCT

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Fig. 7

The I–V characteristics of TSM-PD05.05 (250 W) module at different temperatures at fixed irradiance (G=800W/m2)

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Fig. 8

The estimated full I–V characteristics of TSM-PD05.05 (260 W) module at different irradiance conditions at the STC

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Fig. 9

The full I–V characteristics of TSM-PD05.05(260 W) module from the datasheet (Copy from2)



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