期刊文献+

遇环境剧变干扰的改进型最大功率点跟踪实验

Improved Maximum Power Point Tracking Experiment Method in Variable Environment
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摘要 当外界光照强度或温度突变时,常用的最大功率点跟踪算法无法跟踪到光伏模块的全局最大功率点。通过增加dVPV/dIPV和dPPV/dVPV判据,确定外界环境状态,提出了一种改进型电导增量最大功率点跟踪控制方法。该方法既具有传统电导增量控制方法的优点:外界环境稳定时,减小了最大功率点附近的振荡,比干扰观测法更加精确;同时在外界环境突变时能很快无振荡地跟踪到光伏模块的最大功率点。仿真结果证明了此控制算法的高适应性、鲁棒性,并建立实验让学生通过实践验证方法的有效性。 When rapidly changing irradiation is on the photovoltaic panels, the traditional maximum power point tracking (MPPT) control algorithm could not effectively track the maximum power point (MPP) on pan- els. In this paper, through adding the criterions of dV_PV/dI_PV and dP_PV/dV_PV, an improved Incremental Con- ductance (IncCond) MPPT control algorithm is proposed. This method has the advantages of traditional Inc- Cond MPPT, which eliminates the oscillation around the MPP and is more accurate than the perturbation and observation algorithm, and can track the voltage of maximum power point in variable environment without any oscillation. Simulation and experiment results verify the high adaptability, robustness and effectivity of the pro- posed MPPT method. And experiment is set to help students understand MPPT method in practical.
出处 《电力系统及其自动化学报》 CSCD 北大核心 2012年第3期41-45,共5页 Proceedings of the CSU-EPSA
基金 国家自然科学基金资助项目(61104047) 中南大学中央高校基本科研业务费专项资金资助项目(2011QNZT037)
关键词 太阳能 最大功率点跟踪实验 电导增量法 外界环境突变 photovoltaic power maximum power point tracking experiment(MPPT) incremental conduct-ance variable environment
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参考文献15

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