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MW級(jí)風(fēng)電機(jī)組最大功率追蹤復(fù)合控制策略
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“十一五”國(guó)家科技支撐計(jì)劃資助項(xiàng)目(2009BAA22B03)


Maximum Power Point Tracking Compound Control Strategy of MW Level Wind Turbines
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    摘要:

    針對(duì)目前普遍應(yīng)用的間接轉(zhuǎn)速控制技術(shù)由于風(fēng)輪轉(zhuǎn)動(dòng)慣量大而導(dǎo)致動(dòng)態(tài)跟蹤特性較差的問題,提出直接風(fēng)速控制與間接風(fēng)速控制相結(jié)合,改善最大功率追蹤響應(yīng)性能的新型復(fù)合控制策略,。針對(duì)風(fēng)速測(cè)量不準(zhǔn)確,采用BP神經(jīng)網(wǎng)絡(luò)構(gòu)建了有效風(fēng)速估計(jì)模型,。仿真實(shí)驗(yàn)證明,基于有效風(fēng)速估計(jì)與真實(shí)風(fēng)速的一致性,,即使估計(jì)存在誤差,,采用復(fù)合控制策略也可以提升風(fēng)能利用系數(shù),提高發(fā)電量1%~2%,。

    Abstract:

    Dynamic valid wind speed of aerodynamic characteristic wind wheel was evaluated based on BP neural network.According to the evaluated valid wind speed dynamically and combined direct wind speed control with indirectly wind control, a new complex control method was proposed. With this complex control method, dynamic characteristics of MPPT under indirect wind speed control can be obviously improved when wind speed evaluation is estimated with error. Besides, it can also follow the fluctuations of wind to increase the efficiency of wind power.

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童亦斌,劉展,劉遠(yuǎn)遠(yuǎn). MW級(jí)風(fēng)電機(jī)組最大功率追蹤復(fù)合控制策略[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2011,42(9):129-132. Tong Yibin, Liu Zhan, Liu Yuanyuan. Maximum Power Point Tracking Compound Control Strategy of MW Level Wind Turbines[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(9):129-132.

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