本文選題：變槳距 + DSHplus�。� 參考：《東北大學》2012年碩士論文

【摘要】：變槳距功率調節(jié)技術是大型并網風電機組的重要技術之一。在風力發(fā)電機組的運行過程中,只有保證對槳葉捕捉風能的穩(wěn)定控制,才能輸出質量可靠、安全高效的電能。液壓變槳系統(tǒng)是目前廣泛采用的變槳距控制方式之一,研究其動態(tài)特性和控制性能,對提高變速恒頻風電機組的控制質量具有重要意義。 由于風電機組的變槳距液壓系統(tǒng)屬于涉及多種能量的復雜系統(tǒng),而鍵合圖法建模在處理多種能量間的轉換具有獨特的優(yōu)勢,故本文在風電機組變槳距液壓系統(tǒng)進行原理分析后,利用功率鍵合圖法建立了系統(tǒng)的數學模型,并在MATLAB/Simulink的仿真環(huán)境下搭建了仿真模型,對系統(tǒng)的動態(tài)特性進行了分析。根據風電機組的實際工況特點,加入了模糊PID控制策略。結合系統(tǒng)的仿真模型,在仿真環(huán)境下檢驗了控制效果。 考慮到液壓系統(tǒng)的復雜性,運用了液壓仿真工具DSHplus搭建了系統(tǒng)的模型。并采用與Simulink聯(lián)合仿真的方式,結合MATLAB語言編寫的模糊PID控制器程序,再次對液壓系統(tǒng)的控制效果進行檢驗。
[Abstract]:Variable pitch power regulation is one of the most important technologies for large scale grid-connected wind turbines. In the process of wind turbine operation, only by ensuring the stable control of wind energy capture on the blade, can the power output be reliable, safe and efficient. Hydraulic variable propeller system is one of the widely used pitch control methods at present. The dynamic characteristics and control performance of the variable pitch control system are studied. It is of great significance to improve the control quality of wind turbine with variable speed and constant frequency. Because the variable pitch hydraulic system of wind turbine belongs to a complex system involving many kinds of energy, the bond graph method has a unique advantage in dealing with the conversion between many kinds of energy. Therefore, after analyzing the principle of variable pitch hydraulic system of wind turbine, the mathematical model of the system is established by using the power bond graph method, and the simulation model is built in MATLAB / Simulink environment, and the dynamic characteristics of the system are analyzed. According to the actual operating conditions of wind turbine, fuzzy pid control strategy is added. Combined with the simulation model of the system, the control effect is tested in the simulation environment. Considering the complexity of the hydraulic system, the hydraulic simulation tool DSHplus is used to build the system model. The control effect of hydraulic system is tested again by using the method of combined simulation with Simulink and the fuzzy pid controller program written in MATLAB.
【學位授予單位】：東北大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TM315;TH137

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本文編號：1993908