CAJ | 학술논문

为了研究光伏电池最大功率点追踪算法,本文对光伏电池的输出特性进行了分析。以光伏阵列工作在稳定区域内的情况下,dP/dU与I存在线性关系为基础,本文提出了一种改进型扰动观察法的最大功率点追踪算法。该算法提出了一个新的判断光伏电池最大功率点的条件,结合扰动观察法和固定电压法寻找最大功率点。与传统的扰动观察法相比,该算法提高了系统的稳定性。对该算法进行了理论推导,并采用Matlab进行了仿真验证,结果表明,该算法能减少在最大功率点附近的振荡。
위료연구광복전지최대공솔점추종산법,본문대광복전지적수출특성진행료분석。이광복진렬공작재은정구역내적정황하,dP/dU여I존재선성관계위기출,본문제출료일충개진형우동관찰법적최대공솔점추종산법。해산법제출료일개신적판단광복전지최대공솔점적조건,결합우동관찰법화고정전압법심조최대공솔점。여전통적우동관찰법상비,해산법제고료계통적은정성。대해산법진행료이론추도,병채용Matlab진행료방진험증,결과표명,해산법능감소재최대공솔점부근적진탕。
The paper analyses the voltage-current characteristic of PV cells to study maximum power point tracking algorithm. Based on near linearity of dP/dU versus I in stable working area of photovoltaic array, maximum power point tracking algorithm for photovoltaic cells is improved. The algorithm proposing new condition to confirm the maximum power point is combined with constant voltage method and perturb-observe method. The stability of system is improved in comparison with traditional perturbation and observation method. The algorithm is theoretically derived and simulated by Matlab. The results of simulation show that the algorithm can eliminate oscillation.