【摘要】：實現(xiàn)最大功率追蹤(MPPT)和變速恒頻(VSCF)是風(fēng)力發(fā)電的兩個根本問題。本文以混合驅(qū)動型永磁風(fēng)力發(fā)電機為研究對象,研究了該類型的風(fēng)力機實現(xiàn)上述兩個關(guān)鍵技術(shù)的非線性動力學(xué)與控制問題,完成了如下的工作:首先,建立了混合驅(qū)動永磁伺服電機永磁氣隙-氣動雙耦合的非線性模型,分析了參數(shù)變化時,系統(tǒng)出現(xiàn)混沌現(xiàn)象的發(fā)生機理與發(fā)生條件,設(shè)計了無源控制器,以實現(xiàn)消除混沌運動的目的。其次,建立了以混合驅(qū)動系統(tǒng)為核心的考慮聯(lián)軸器剛度和阻尼的動力學(xué)模型。在此基礎(chǔ)上,進(jìn)一步研究建立了空氣動力學(xué)模型、主發(fā)電機模型、永磁伺服電機控制模型、風(fēng)速模型、槳距角控制系統(tǒng)模型等。為了簡化問題,突出空氣動力學(xué)的非線性特性,其余模型均通過簡化分析與假設(shè)建立了線性模型,只保留空氣動力學(xué)非線性特性,得到了整體混合驅(qū)動發(fā)電系統(tǒng)的非線性模型。第三,針對上述系統(tǒng)非線性模型,運用模糊控制的知識,提出了高風(fēng)速時功率平衡的控制策略,并設(shè)計了模糊PID控制器,仿真結(jié)果表明控制系統(tǒng)很好的實現(xiàn)了控制目標(biāo)。第四,基于反饋線性化控制理論,設(shè)計了混合驅(qū)動永磁風(fēng)力機系統(tǒng)非線性方程的反饋線性化模型,并求出最終的非線性反饋控制律,仿真結(jié)果表明控制系統(tǒng)實現(xiàn)了系統(tǒng)的控制目標(biāo)。
[Abstract]:The realization of maximum power tracking (MPPT) and variable speed constant frequency (VSCF) are two fundamental problems of wind power generation. In this paper, the nonlinear dynamics and control of the hybrid driven permanent magnet wind turbine are studied. Firstly, the following works are done: firstly, the nonlinear dynamics and control of the two key technologies mentioned above are studied. A nonlinear model of permanent magnet air gap-pneumatic dual coupling with hybrid drive permanent magnet servo motor is established. The mechanism and conditions of chaos in the system are analyzed when the parameters change, and the passive controller is designed. In order to achieve the purpose of eliminating chaotic motion. Secondly, a dynamic model considering coupling stiffness and damping based on hybrid drive system is established. On this basis, the aerodynamic model, the main generator model, the permanent magnet servo motor control model, the wind speed model, the pitch angle control system model and so on are further studied and established. In order to simplify the problem and highlight the nonlinear characteristics of aerodynamics, the linear models are established by simplifying the analysis and assumptions, and only the nonlinear characteristics of aerodynamics are retained, and the nonlinear models of the whole hybrid drive power generation system are obtained. Thirdly, according to the nonlinear model of the above-mentioned system, the control strategy of power balance at high wind speed is proposed by using the knowledge of fuzzy control, and the fuzzy PID controller is designed. The simulation results show that the control system achieves the control objective very well. Fourthly, based on the feedback linearization control theory, the feedback linearization model of the nonlinear equation of the hybrid drive permanent magnet wind turbine system is designed, and the final nonlinear feedback control law is obtained. The simulation results show that the control system realizes the control goal of the system.
【學(xué)位授予單位】：西安理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TP273;TM315

【參考文獻(xiàn)】

相關(guān)期刊論文 前6條

1 林勇剛;王賢成;王菁;劉宏偉;韓利坤;李偉;;基于液壓傳動的離網(wǎng)型風(fēng)力機“變速恒頻”控制研究[J];太陽能學(xué)報;2014年10期

2 朱成黨;涂樂;林勇剛;劉宏偉;李偉;;風(fēng)電機組的機械液壓混合傳動技術(shù)[J];浙江大學(xué)學(xué)報(工學(xué)版);2014年10期

3 曾U喺，

本文編號：2436446