本文選題：風(fēng)力發(fā)電　切入點(diǎn)：雙饋電機(jī)　出處：《哈爾濱理工大學(xué)》2015年碩士論文

【摘要】：全球經(jīng)濟(jì)發(fā)展帶來(lái)了巨大的能源需求，傳統(tǒng)的能源供應(yīng)已經(jīng)很難滿足需求并且也會(huì)帶來(lái)霧霾等環(huán)境問(wèn)題。尋找新型環(huán)保優(yōu)質(zhì)能源已經(jīng)成為當(dāng)下的熱門(mén)課題。風(fēng)能作為廣泛存在于自然界的能量，其可再生性、無(wú)污染性和巨大的含量等優(yōu)點(diǎn)已經(jīng)被人們接受并且引起了重視。我國(guó)幅員遼闊，地理位置優(yōu)越，具有豐富的風(fēng)能資源，并且已經(jīng)建立了很多的風(fēng)力發(fā)電廠。 在風(fēng)電系統(tǒng)安裝的電機(jī)類型中，雙饋式感應(yīng)電機(jī)(Doubly Fed InductionGenerator,簡(jiǎn)稱DFIG)具有的功率可調(diào)和變速恒頻運(yùn)行等優(yōu)點(diǎn)使其已經(jīng)成為目前主流機(jī)型之一。 本文通過(guò)對(duì)雙饋式異步發(fā)電機(jī)的數(shù)學(xué)模型進(jìn)行分析，經(jīng)過(guò)坐標(biāo)變換得到dq兩相旋轉(zhuǎn)坐標(biāo)系下的簡(jiǎn)化模型。對(duì)風(fēng)力機(jī)實(shí)現(xiàn)最大風(fēng)能追蹤的能力進(jìn)行分析，并根據(jù)風(fēng)力機(jī)的物理模型，經(jīng)過(guò)計(jì)算，推導(dǎo)出以最大風(fēng)能追蹤為目標(biāo)的風(fēng)力機(jī)控制系統(tǒng)。對(duì)雙饋式異步風(fēng)力發(fā)電機(jī)的交-直-交變換器進(jìn)行理論分析，通過(guò)選取不同的控制策略實(shí)現(xiàn)系統(tǒng)的有功功率和無(wú)功功率解耦控制，以實(shí)現(xiàn)最大風(fēng)能跟蹤運(yùn)行。 通過(guò)Matlab/Simulink軟件對(duì)雙饋式風(fēng)力發(fā)電系統(tǒng)中的風(fēng)機(jī)、電機(jī)和控制部分分別進(jìn)行建立仿真模型，并對(duì)其進(jìn)行仿真分析。通過(guò)對(duì)仿真結(jié)果分析可知，本文采取的控制策略可以很好地實(shí)現(xiàn)有功、無(wú)功功率解耦，可以根據(jù)系統(tǒng)變化實(shí)時(shí)改變有功功率和無(wú)功功率參考值從而適應(yīng)風(fēng)速的變化實(shí)現(xiàn)最大風(fēng)能追蹤。在電網(wǎng)電壓波動(dòng)的情況下，本文采取的控制策略能快速響應(yīng)，控制系統(tǒng)的無(wú)功功率變化，，減小因電壓波動(dòng)對(duì)系統(tǒng)穩(wěn)定運(yùn)行帶來(lái)的影響。
[Abstract]:Global economic development has brought huge energy needs, Traditional energy supply has been difficult to meet the demand and will bring environmental problems such as haze. Looking for new environmental protection and high quality energy has become a hot topic. Wind energy, as an energy widely existing in nature, is renewable. The advantages of pollution-free and huge content have been accepted and paid attention to. China has a vast territory, superior geographical location, rich wind energy resources, and has established a lot of wind power plants. Among the motor types installed in wind power system, doubly-fed induction motor (DFIGM) has become one of the mainstream models because of its power and variable speed constant frequency operation. In this paper, the mathematical model of doubly-fed asynchronous generator is analyzed, and the simplified model in dq two-phase rotating coordinate system is obtained by coordinate transformation. The ability of wind turbine to track maximum wind energy is analyzed. According to the physical model of wind turbine, a wind turbine control system aiming at maximum wind energy tracking is deduced through calculation. The AC-DC-AC converter of doubly-fed asynchronous wind turbine is analyzed theoretically. The decoupling control of active and reactive power is realized by selecting different control strategies to realize the maximum wind power tracking. The simulation model of fan, motor and control part in doubly-fed wind power generation system is established by Matlab/Simulink software, and the simulation analysis is carried out. The control strategy adopted in this paper can realize the decoupling of active and reactive power. The reference value of active power and reactive power can be changed in real time according to the change of system, and the maximum wind energy tracking can be realized according to the change of wind speed. In the case of voltage fluctuation of power network, the control strategy adopted in this paper can respond quickly. The reactive power of the system is controlled to reduce the influence of voltage fluctuation on the stable operation of the system.
【學(xué)位授予單位】：哈爾濱理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TM614

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