发明名称 |
Method and device for maximum power point tracking of photovoltaic module systems |
摘要 |
A method of maximum power point tracking for a photovoltaic module system is disclosed. The photovoltaic module system may comprise a photovoltaic module array comprising a plurality of identical photovoltaic modules, and the tracking method may comprise: detecting system parameters and environmental parameters of the photovoltaic module array; estimating a first voltage coefficient of one photovoltaic module according to the system parameters and the environmental parameters; estimating a plurality of second voltage coefficients of the photovoltaic module array according to the first voltage coefficient with different shading ratios; estimating a plurality of local maximum power point powers according to corresponding second voltage coefficients; and determining a whole maximum power point by comparing the local maximum power point powers with one another. |
申请公布号 |
US8957643(B2) |
申请公布日期 |
2015.02.17 |
申请号 |
US201313846312 |
申请日期 |
2013.03.18 |
申请人 |
National Taiwan University |
发明人 |
Jiang Joe Air;Wang Jen Cheng;Su Yu Li;Kuo Kun-Chang;Shieh Jyh-Cherng |
分类号 |
G05F5/00;G05F1/67 |
主分类号 |
G05F5/00 |
代理机构 |
Huffman Law Group, PC |
代理人 |
Huffman Law Group, PC |
主权项 |
1. A method of maximum power point tracking for a photovoltaic module system, wherein the photovoltaic module system comprises a photovoltaic module array comprising a plurality of identical photovoltaic modules, and the tracking method comprises:
detecting system parameters and environmental parameters of the photovoltaic module array; estimating a first voltage coefficient of one photovoltaic module according to the system parameters and the environmental parameters; estimating a plurality of second voltage coefficients of the photovoltaic module array according to the first voltage coefficient with different shading ratios; estimating a plurality of local maximum power point powers according to corresponding second voltage coefficients; and determining a whole maximum power point by comparing the local maximum power point powers with one another. |
地址 |
Taipei TW |