| 基于中值步长法的光伏阵列最大功率点跟踪 |
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| 引用本文： | 卢秀和,王娇. 基于中值步长法的光伏阵列最大功率点跟踪[J]. 可再生能源, 2010, 28(5) |
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| 作者姓名： | 卢秀和 王娇 |
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| 作者单位： | 长春工业大学,电气与电子工程学院,吉林,长春,130012 |
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| 摘 要： | 提出了光伏阵列最大功率点跟踪的新型变步长扰动观察法,即中值步长法。在外界环境发生变化时,利用斜率判断扰动方向,利用启动步长快速跟踪光伏阵列最大功率点的大概位置;然后每扰动一次就将扰动步长取中值,使系统在稳态时最大限度地逼近最大功率点,减小最大功率点附近的震荡,提高跟踪精度;利用功率判断避免在扰动过程中出现算法错误。通过Matlab进行仿真,证明了中值步长法能达到理想的跟踪效果。
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| 关 键 词： | 扰动观察法 中值步长法 最大功率点跟踪 光伏发电系统 |
Photovoltaic array maximum power point tracking based on intermediate value of step length method |
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| LU Xiu-he,WANG Jiao. Photovoltaic array maximum power point tracking based on intermediate value of step length method[J]. Renewable Energy(China), 2010, 28(5) |
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| Authors: | LU Xiu-he WANG Jiao |
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| Affiliation: | LU Xiu-he,WANG Jiao(School of Electrical and Electronic Engineering,Changchun University of Technology,Changchun 130012,China) |
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| Abstract: | The paper puts forward a new kind of perturbation observation method for photovoltaic ar-ray of maximum power point tracking,it is the intermediate value of step length method.When the en-vironment changes,judging the direction of disturbance by slope,fast tracking the general location of maximum power point by starting step length.In order to make the system to approximate the maxi-mum power point at the steady condition,reduce the concussion nearby maximum power point,and improve tracking accuracy,in the ... |
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| Keywords: | perturbation and observation method intermediate value of step length method maxi-mum power point tracking(MPPT) photovoltaic array |
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