| 引用本文: | 彭会锋,孙建平,曹相春,刘晓龙.基于功率占空比微分曲线的光伏系统MPPT算法[J].电力自动化设备,2013,33(6): |
| PENG Huifeng,SUN Jianping,CAO Xiangchun,LIU Xiaolong.MPPT algorithm based on power duty cycle differential characteristic curve for photovoltaic system[J].Electric Power Automation Equipment,2013,33(6): |
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| 摘要: |
| 提出一种基于功率占空比微分特性曲线的改进分段变步长最大功率点追踪（MPPT）算法。该算法利用微分曲线极值点实现追踪区域自动划分；运行点远离最大功率点（MPP）时采用较大固定步长追踪，在MPP附近时采用自适应变步长追踪。MATLAB仿真结果表明，改进算法准确实现追踪区域自动划分，同时具有较好的动态响应特性和稳定性。 |
| 关键词: 光伏系统 最大功率点追踪 分段变步长 功率占空比 仿真 |
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| MPPT algorithm based on power duty cycle differential characteristic curve for photovoltaic system |
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PENG Huifeng, SUN Jianping, CAO Xiangchun, LIU Xiaolong
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School of Electrical and Electronic Engineering，North China Electric Power University，Beijing 102206，China
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| Abstract: |
| An improved segmentation and variable step-size MPPT（Maximum Power Point Tracking） algorithm is proposed based on power duty cycle differential characteristic curve，which carries out the divisional control by automatically dividing the tracking areas according to the extremum of power duty cycle differential characteristic curve. A large fixed tracking step is adopted when the operating point is far away from MPP（Maximum Power Point），while an adaptive variable step size is adopted when the operating point is near MPP. Simulative results by MATLAB show that，the improved MPPT algorithm realizes the automatic and accurate division of tracking areas and shows better static and dynamic performances. |
| Key words: photovoltaic system MPPT segmentation and variable step-size power duty cycle computer simulation |
