本文選題：風(fēng)能轉(zhuǎn)換系統(tǒng) + T-S模糊�。� 參考：《江南大學(xué)》2014年碩士論文

【摘要】：提高風(fēng)能轉(zhuǎn)換系統(tǒng)的性能對(duì)風(fēng)能產(chǎn)業(yè)的發(fā)展具有重要意義，為減少風(fēng)力發(fā)電的成本提供了契機(jī)。由于風(fēng)力發(fā)電的成本很大程度上是由風(fēng)能捕獲效率及其可靠性決定，近年來(lái)針對(duì)風(fēng)能轉(zhuǎn)換系統(tǒng)的容錯(cuò)控制策略的研究已受到顯著關(guān)注。論文在充分理解風(fēng)能轉(zhuǎn)換系統(tǒng)最大風(fēng)能捕獲控制工作原理和國(guó)內(nèi)外先進(jìn)容錯(cuò)控制策略的基礎(chǔ)上，開(kāi)展了以下研究工作： 針對(duì)T-S建模風(fēng)能轉(zhuǎn)換系統(tǒng)傳感器故障，當(dāng)一個(gè)傳感器失效時(shí)，，利用其余完好的狀態(tài)反饋回路平均分擔(dān)已失效回路控制律的容錯(cuò)控制思想，設(shè)計(jì)了風(fēng)能轉(zhuǎn)換系統(tǒng)的狀態(tài)反饋主動(dòng)容錯(cuò)控制器。仿真實(shí)驗(yàn)表明所設(shè)計(jì)的容錯(cuò)控制系統(tǒng)在任意一個(gè)傳感器失效時(shí)，均可以實(shí)現(xiàn)從正常系統(tǒng)控制到故障系統(tǒng)控制的無(wú)擾動(dòng)切換，保證了系統(tǒng)在故障狀態(tài)下的穩(wěn)定運(yùn)行，同時(shí)也驗(yàn)證了此容錯(cuò)控制器的可行性。 針對(duì)風(fēng)能轉(zhuǎn)換系統(tǒng)執(zhí)行器故障問(wèn)題，分析了風(fēng)能轉(zhuǎn)換系統(tǒng)的狀態(tài)方程，將風(fēng)能轉(zhuǎn)換系統(tǒng)中執(zhí)行器連續(xù)增益故障轉(zhuǎn)化成傳動(dòng)系統(tǒng)參數(shù)的不確定性，推導(dǎo)了風(fēng)能轉(zhuǎn)換系統(tǒng)的T-S模糊模型。采用狀態(tài)反饋并行分布補(bǔ)償結(jié)構(gòu)，設(shè)計(jì)了風(fēng)能轉(zhuǎn)換系統(tǒng)執(zhí)行器故障時(shí)的魯棒容錯(cuò)控制器，并進(jìn)行了穩(wěn)定性證明。仿真結(jié)果表明風(fēng)能轉(zhuǎn)換系統(tǒng)在發(fā)生執(zhí)行器故障時(shí)，仍能夠?qū)崿F(xiàn)額定風(fēng)速以下的最大風(fēng)能捕獲，減緩了故障惡化的程度，提高了機(jī)組利用率。 針對(duì)風(fēng)能轉(zhuǎn)換系統(tǒng)中執(zhí)行器故障，基于滑�？刂评碚�，論文提出了一種新型的主動(dòng)容錯(cuò)控制策略。設(shè)計(jì)滑模故障觀測(cè)器，實(shí)時(shí)動(dòng)態(tài)采集執(zhí)行器故障前后數(shù)據(jù)信息，對(duì)執(zhí)行器故障進(jìn)行重構(gòu)，達(dá)到實(shí)時(shí)故障檢測(cè)的目的。通過(guò)補(bǔ)償控制，保證了滑�？刂破鲗�(duì)風(fēng)能轉(zhuǎn)換系統(tǒng)的可靠控制，實(shí)現(xiàn)了對(duì)執(zhí)行器故障主動(dòng)容錯(cuò)的功能。仿真結(jié)果表明滑模故障觀測(cè)器能夠?qū)崟r(shí)精確地重構(gòu)風(fēng)能轉(zhuǎn)換系統(tǒng)執(zhí)行器故障，主動(dòng)補(bǔ)償容錯(cuò)控制器在不影響風(fēng)能轉(zhuǎn)換系統(tǒng)動(dòng)態(tài)性能的情況下，仍能實(shí)現(xiàn)系統(tǒng)的最大風(fēng)能捕獲。
[Abstract]:Improving the performance of wind energy conversion system is of great significance to the development of wind energy industry and provides an opportunity to reduce the cost of wind power generation. Since the cost of wind power generation is largely determined by the wind energy capture efficiency and its reliability, the research on fault tolerant control strategies for wind power conversion systems has attracted considerable attention in recent years. On the basis of fully understanding the working principle of maximum wind energy capture control and advanced fault-tolerant control strategies at home and abroad, the following research work is carried out in this paper: Aiming at the sensor failure of T-S modeling wind energy conversion system, when one sensor fails, the fault-tolerant control idea of the failed loop control law is equally shared by the other intact state feedback loops. A state feedback active fault-tolerant controller for wind energy conversion system is designed. Simulation results show that the designed fault-tolerant control system can be switched from normal system control to fault system control without disturbance when any sensor fails, which ensures the stable operation of the system in the fault state. The feasibility of the fault-tolerant controller is also verified. Aiming at the problem of actuator failure in wind energy conversion system, the state equation of wind energy conversion system is analyzed, and the continuous gain fault of actuator in wind energy conversion system is transformed into the uncertainty of transmission system parameters. The T-S fuzzy model of wind energy conversion system is derived. A robust fault-tolerant controller for wind energy conversion system with actuator failure is designed using a state feedback parallel distributed compensation structure and its stability is proved. The simulation results show that the wind energy conversion system can still realize the maximum wind energy capture below the rated wind speed when the actuator failure occurs, which can slow down the deterioration of the fault and improve the utilization ratio of the unit. Based on sliding mode control theory, a novel active fault-tolerant control strategy is proposed for actuator faults in wind power conversion systems. The sliding mode fault observer is designed to dynamically collect the data before and after the actuator fault and to reconstruct the actuator fault to achieve the purpose of real-time fault detection. Through the compensation control, the sliding mode controller can guarantee the reliable control of wind power conversion system, and realize the function of active fault tolerance for actuator fault. The simulation results show that the sliding mode fault observer can accurately reconstruct the actuator fault of the wind energy conversion system in real time, and the active compensation fault tolerant controller can achieve the maximum wind energy capture without affecting the dynamic performance of the wind energy conversion system.
【學(xué)位授予單位】：江南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM614

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