一種新型獨(dú)立變槳控制器設(shè)計(jì)
曹成帥,趙允貴,王太國
(煙臺(tái)科大正信電氣有限公司,山東 煙臺(tái) 264000)
摘 要:針對風(fēng)剪、塔影和湍流等因素導(dǎo)致風(fēng)輪不平衡載荷嚴(yán)重的問題,提出基于系統(tǒng)分解的獨(dú)立變槳距控制策略,把非線性復(fù)雜變槳距系統(tǒng)分解為三個(gè)簡單的線性子系統(tǒng),將互不耦合的子系統(tǒng)進(jìn)行疊加,得到最終需要的變槳角。建立了變漿子系統(tǒng)模型并進(jìn)行仿真分析,結(jié)果表明該控制策略能很好地降低輪轂固定和旋轉(zhuǎn)坐標(biāo)系下Y方向和Z方向的不平衡載荷,使得發(fā)電機(jī)輸出功率更加穩(wěn)定,波動(dòng)性明顯減小。
關(guān)鍵詞:獨(dú)立變槳;系統(tǒng)分解;非線性;耦合
中圖分類號(hào):TM614 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1007-3175(2016)12-0027-04
Design of a New Type of Independent Variable Pitch Controller
CAO Cheng-shuai, ZHAO Yun-gui, WANG Tai-guo
(Yantai Keda Zhengxin Electric Co., Ltd, Yantai 264000, China)
Abstract: Aiming at the problem that the wind shear, tower shadow and turbulence and other factors lead to the wind wheel load imbalance, this paper put forward the independent variable pitch control strategy based on system decomposition. The nonlinear complex variable pitch system was decomposed into three simple linear subsystems to overlay non-coupled subsystems to obtain the ultimate demanding variable pitch angle. The variable pitch subsystem was established and carried out simulation and analysis. The results show that the control strategy could well reduce the hub fixing and the imbalance load of Y direction and Z direction under the rotating coordinate system, which makes the output power of electric generator more stable and makes the volatility obvious reduced.
Key words: independent variable pitch; system decomposition; nonlinear; coupling
參考文獻(xiàn)
[1] SAHIN A D.Progress and recent trends in wind energy[J].Progress in Energy and Combustion Science,2004,30(5):501-543.
[2] 陳雷,孫宏利,邢作霞. 減小塔影效應(yīng)載荷波動(dòng)的獨(dú)立變槳距控制研究[J]. 電氣技術(shù),2012(1):6-10.
[3] 任海軍. 基于柔性傳動(dòng)鏈的風(fēng)力機(jī)功率控制[J].科學(xué)技術(shù)與工程,2013,13(22):6576-6579.
[4] 邢作霞,陳雷,厲偉,等. 減小塔影和風(fēng)切變效應(yīng)的變槳距控制方法研究[J]. 太陽能學(xué)報(bào),2013,34(6):915-923.
[5] 竇春蘭, 施剛, 曹云峰, 等. 減少風(fēng)力機(jī)轉(zhuǎn)矩波動(dòng)的異步變槳控制[J]. 電工技術(shù)學(xué)報(bào),2014,29(1):236-245.
[6] 邢作霞,肖澤亮,王家驊,等. 風(fēng)力發(fā)電電動(dòng)變槳距載荷模擬及控制策略仿真實(shí)驗(yàn)平臺(tái)開發(fā)[J]. 實(shí)驗(yàn)技術(shù)與管理,2014,31(11):89-93.
[7] 趙微微,張磊,井延偉. 變槳風(fēng)力發(fā)電機(jī)組控制器優(yōu)化設(shè)計(jì)[J]. 電網(wǎng)技術(shù),2014,38(12):3436-3440.
[8] 胡巖,劉玥,姚興佳,等. 兆瓦級(jí)風(fēng)力發(fā)電機(jī)組多段權(quán)系數(shù)獨(dú)立變槳控制[J]. 沈陽工業(yè)大學(xué)學(xué)報(bào),2009,31(6):633-638.
[9] Van ENGELEN T G, Van Der HOOFT E L, SCHAAK P. Development of wind turbine control algorithms for industrial use[C]//European Wind Energy Conference,2001.
[10] Van ENGELEN T G.Design model and load reduction assessment for multi-rotational mode individual pitch control(higher harmonics control)[C]// European Wind Energy Conference,2006.