模拟分析环境因素对小型太阳能发电系统运行特性的影响

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Abstract It is necessary to analyze the influence of environmental factors on the stand-alone PV generation system. This paper presents a weather condition model including irradiation and temperature in terms of the partition function model. Operational characteristic of PV system were obtain by varying input parameters based on different weather conditions such as cloud layer shadow and frequently changing weather. Moreover, the paper also analyzed the PV array technical parameters, the battery charging process and the system output power. Simulation results show that the open-circuit voltage and the short-circuit current have a linear increase with the increasing of irradiation while the latter’s changing rate is higher than the former’s obviously. Considering the influence of environmental factors on irradiation intensity, the battery charging process changes dramatically. When irradiation intensity increased stably, charging process is smooth and the charging time is short, and vice versa. With the weather conditions change frequently, system's output has a fluctuation; when the irradiation is high, the MPPT is accurate.

Key words： Environmental conditions PV power system PV arrays maximum power point tracking (MPPT) lead-acid battery

Received: 20 January 2010 Published: 04 March 2014

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TM615

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	Ren Hang
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Ren Hang,Ye Lin. Operation Characteristics of PV System Under the Influence of Environmental Factors[J]. Transactions of China Electrotechnical Society, 2010, 25(10): 158-165.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2010/V25/I10/158

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