摘要
从数学层面分析 I_(ph)、I_0、n、R_s、R_(sh)5参数模型太阳电池电流方程的切线方程和二阶导数。同时给出I-V特性曲线趋直时的直线方程形式,以及满足基尔霍夫定律的直线式太阳电池电流方程。从数学层面证明增大光生电流I_(ph)或串联内阻R_s时,准则数α(I),V的取值范围减小,并指出只有串联内阻存在时,才出现I-V特性曲线由曲趋直现象。通过实验,采用外加串联内阻的方式验证增大串联内阻I-V特性曲线由曲趋直现象。
The paper mathematically introduces the derivative and the second derivative to analysis to current-voltage characteristics, which use the five parameters （ Iph, I0, n, R, Rth ） to describe single-diode solar cell model. Two forms of the liner I- V equation, the approximate straight line form and the liner current- voltage characteristics applicable to Kirchhoff＇ s current law, are given to describe the current-voltage characteristics when the current-voltage characteristics vary from curve to approximate straight line. An detailed deduction are introduced to illustrate that the interval of criterion numeral IscRs/Voc decreases with the photo-generated current Iph and the series resistance Rs increasing, besides, the current-voltage vary from curve into straight line appears only when the series resistance has a finite value. In addition, the phenomenon is confirmed using the dedicated experiments by adding the extra series resistance to the apparent series resistance.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2015年第7期1539-1544,共6页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(50976112)
