CAJ | 학술논문

为了优化利用大型光伏发电系统的阵列组件，设计了一个改进的多元结构部分遮挡光伏系统数学模型。采用一个集中的最大功率点跟踪(maximum power point tracking， MPPT)控制器，在 Matlab环境下进行建模仿真，证明该多元结构的光伏系统数学模型可以优化系统结构，节约设备，降低成本。为了提高最大功率点的跟踪准确度和速度，提出了一种基于改进的粒子群优化算法(particle swarm optimization，PSO)的最大功率点跟踪方法，并进行建模仿真和实验，与扰动观察法(perturbation and observation，PO)的性能指标和输出波形图对比，验证改进的粒子群优化算法对最大功率点具有更快的跟踪速度，避免在最大功率点附近产生振荡。
위료우화이용대형광복발전계통적진렬조건，설계료일개개진적다원결구부분차당광복계통수학모형。채용일개집중적최대공솔점근종(maximum power point tracking， MPPT)공제기，재 Matlab배경하진행건모방진，증명해다원결구적광복계통수학모형가이우화계통결구，절약설비，강저성본。위료제고최대공솔점적근종준학도화속도，제출료일충기우개진적입자군우화산법(particle swarm optimization，PSO)적최대공솔점근종방법，병진행건모방진화실험，여우동관찰법(perturbation and observation，PO)적성능지표화수출파형도대비，험증개진적입자군우화산법대최대공솔점구유경쾌적근종속도，피면재최대공솔점부근산생진탕。
To adequately use array components of large-scale photovoltaic generation system, an analytical modeling with modified multidimensional configuration of partially shaded photovoltaic systems was designed, a concentrated maximum power point tracking (MPPT) controller was adopted and simulated in MATLAB environment. Simulation results show that, the analytical modeling with modified multidimensional configuration could optimize array component of large-scale photovoltaic generation system, save equipment and reduce cost. To improve the tracking accuracy and velocity, an improved particle swarm optimization (PSO) based maximum power point tracking method is proposed and corresponding modeling simulation and experiments are performed. Comparing performance index and output waveform of the proposed MPPT method with those from perturbation and observation (PO), it is validated that the improved PSO possesses faster tracking velocity for MPP and can avoid the oscillation around MPP.