【摘要】 针对传统固定步长算法在最大功率点附近产生小幅振荡问题,提出了一种改进的自动缩放变步长方法,该方法对功率转换的占空比步长缩放控制功能进行改进,能够防止光照强度突变时,对光伏发电系统最大功率点跟踪的误判。最后,在Matlab/Simulink仿真环境中对所提方法和其他传统方法进行对比,结果证明了所提方法的有效性。更多还原

【Abstract】 Due to the small oscillation generated near the maximum power point by using the fixedstep algorithm,an improved auto-scaling variable step-size Maximum Power Point Tracking(MPPT)method was proposed in this paper,a improvement was made on the step-size scaling function of the duty cycle that controls the converter.The proposed method can effectively prevent the misjudgment of the photovoltaic power maximum power point tracking at an abrupt change of the irradiation.Finally,the proposed method is verified effectively by comparing the proposed and other traditionial methods in Matlab/Simulink simulation environment.更多还原