摘要
在CVT、P&O MPPT算法研究的基础上,针对CVT效率低及P&O MPPT跟踪速度慢、易振荡的特点,设计出一种改进的扰动型MPPT算法。算法基于CVT算法启动后跟踪速度快且可调、最大功率点处振荡现象小的特点,经PSIM仿真软件进行了对比仿真试验,并在500 k W光伏并网逆变器样机中进行了实际测试。结果表明,算法是正确的、有效的。
Based on analyzing the traditional P＆O MPPT,aiming at the P＆O MPPT slow tracking speed and easy appearing oscillation at the maximum power point,this paper designed an improved tracking algorithm. The algorithm has fast and adjustable tracking speed,and small oscillation characteristics at the maximum power point.Finally,by using PSIM simulation software,the algorithm was compared and simulated,and tested in 500 k W PV grid inverter system. The correctness and effectiveness of the algorithm were verified.
作者
马玉华
毛学宇
MA Yuhua;MAO Xueyu(Zhengzhou Electromechanial Engineering Research Institute,Zhengzhou 450015,China)
出处
《电器与能效管理技术》
2018年第16期21-25,共5页
Electrical & Energy Management Technology
关键词
逆变系统
扰动观察
步长
跟踪速度
inverter system
P＆O
tracking step
tracking speed
