CAJ | 학술논문

采用目前常用的光伏电池模型对光伏阵列进行建模时，或者需要多个模块进行串并联，仿真电路规模较大，增加了仿真复杂性，或者由于参数简化影响精度。将建立光伏阵列模型的方法分为计算法和查表法，计算法容易收敛，但需要明确的光伏阵列输出电压电流方程，查表法比较灵活，只需知道输出电压电流的数据源，可以仿真任意规模的光伏阵列。之后基于查表法和实际产品数据实现与功率变换器进行组合连接的电路仿真，并解决建模过程的若干技术问题。结合模型和阻抗分析，对单模块、组串和阵列等典型配置分布式MPPT机理进行分析，并得出相应控制表达式。最后针对相应配置分别设计算例进行仿真研究，并与集中式MPPT结果进行对比分析，为显著提高光伏阵列输出效率建立理论基础。
채용목전상용적광복전지모형대광복진렬진행건모시，혹자수요다개모괴진행천병련，방진전로규모교대，증가료방진복잡성，혹자유우삼수간화영향정도。장건립광복진렬모형적방법분위계산법화사표법，계산법용역수렴，단수요명학적광복진렬수출전압전류방정，사표법비교령활，지수지도수출전압전류적수거원，가이방진임의규모적광복진렬。지후기우사표법화실제산품수거실현여공솔변환기진행조합련접적전로방진，병해결건모과정적약간기술문제。결합모형화조항분석，대단모괴、조천화진렬등전형배치분포식MPPT궤리진행분석，병득출상응공제표체식。최후침대상응배치분별설계산례진행방진연구，병여집중식MPPT결과진행대비분석，위현저제고광복진렬수출효솔건립이론기출。
The simulation circuit of PV arrays can be complex or even features low accuracy, due to the series or parallel connection of photovoltaic cells that are usually modeled by conventional models. In this paper, the PV arrays modeling methods are divided into two categories, namely, calculation method and look-up table method. The calculation method easily falls into convergence, yet needs definite PV output voltage and current equation. The look-up table method is more flexible as the modeling of PV array only requires current and voltage data. A look-up table method is proposed to verify the correctness of modeling PV arrays in a solar power converter. In this process, a few key problems are solved. According to the proposed model and the impedance analysis results, the mechanisms of distributed maximum power point tracking (MPPT) of single, series, and multiple PV arrays are investigated and the corresponding equations are obtained. Calculation cases of corresponding configurations are simulated and the results are compared with that of centralized MPPT, which provides solid theoretical foundations for improving the efficiency of PV arrays.