永磁同步風(fēng)力發(fā)電機(jī)的自抗擾控制
曹夢(mèng)瑩1,余淼2,李娟1,王晨豪1,徐怡雯1
(1 揚(yáng)州大學(xué) 水利與能源動(dòng)力工程學(xué)院,江蘇 揚(yáng)州 225127;2 江蘇省水利勘測(cè)設(shè)計(jì)研究院有限公司,江蘇 揚(yáng)州 225129)
摘 要:針對(duì)永磁同步風(fēng)力發(fā)電機(jī)系統(tǒng)存在的建模誤差、內(nèi)部模型的不確定性、外界環(huán)境的多重?cái)_動(dòng)等問題,提出一種不依賴于數(shù)學(xué)模型、抗干擾能力強(qiáng)且易于實(shí)現(xiàn)的復(fù)合自抗擾控制方法。該方法以實(shí)現(xiàn)最大功率跟蹤為控制目標(biāo),采用自抗擾控制,基于最佳葉尖速比調(diào)控電機(jī)轉(zhuǎn)速,利用擴(kuò)張狀態(tài)器實(shí)時(shí)估計(jì)系統(tǒng)總干擾,且通過前饋通道進(jìn)行干擾補(bǔ)償,從而提高轉(zhuǎn)速跟蹤能力,并結(jié)合傳統(tǒng)PI 進(jìn)行反饋控制,來提高系統(tǒng)運(yùn)行的穩(wěn)定性。仿真結(jié)果表明,在不同風(fēng)速情況下,相比傳統(tǒng)的PI 控制方法,自抗擾控制方法能夠更好地實(shí)現(xiàn)系統(tǒng)的最大功率輸出,有效提高了系統(tǒng)的魯棒性和抗干擾能力。
關(guān)鍵詞:自抗擾控制;永磁同步風(fēng)力發(fā)電機(jī);最大功率點(diǎn)跟蹤;最佳葉尖速比
中圖分類號(hào):TM315 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1007-3175(2017)08-0001-07
Active Disturbance Rejection Control of Permanent Magnet Synchronous Wind Power Generation System
CAO Meng-ying1, YU Miao2, LI Juan1, WANG Chen-hao1, XU Yi-wen1
(1 School of Hydraulic Energy and Power Engineering, Yangzhou University, Yangzhou 225127, China;
2 Jiangsu Surveying and Design Institute of Water Resources Co., Ltd, Yangzhou 225129, China)
Abstract: Considering the problems such as modeling error, internal model uncertainty and multiple disturbance of external environment in the permanent magnet synchronous wind power generation system, this paper proposed a complex active disturbance rejection control method with high performance of anti-interference which was independent of mathematical model and easy to implement. To track the maximum power, the active disturbance rejection control was used to adjust the motor speed based on the optimum tip speed ratio, the extended state observer was used to estimate the total disturbance of the system in real time and the interference was compensated through the feedback controller to improve the speed tracking capability. The system was combined with the traditional proportion integration (PI) control to improve the stability of the system operation. The simulation results show that under the conditions of different speeds, compared the traditional PI control method, the active disturbance rejection control method can realize the maximum power output of the system, which improves the robustness and anti-interference ability of the system.
Key words: active disturbance rejection control; permanent magnet synchronous wind power generation system; maximum power point tracking; optimum tip speed ratio
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