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作 者:周雪松[1] 杨子明 马幼捷[1] ZHOU Xuesong;YANG Ziming;MA Youjie(School of Electrical and Electronic Engineering,Tianjin University of Technology,Tianjin 300384,China)
机构地区:[1]天津理工大学电气工程与自动化学院,天津300384
出 处:《天津理工大学学报》2022年第3期1-7,共7页Journal of Tianjin University of Technology
基 金:国家自然科学基金(51877152);天津市自然科学基金(18JCZDJC97300)。
摘 要:为提高永磁直驱风力发电机并网过程中直流母线电压的暂态性能,增强低电压穿越能力,提出基于风能转换系统的修改型线性自抗扰控制策略。构造了修改型线性自抗扰控制器(modified linear active disturbance rejection controller,MLADRC),通过状态变量的选取,使MLADRC中不会引入补偿结构。从频域中分析了MLADRC的性能,将其应用于风能转换系统网侧变流器电压外环控制中,并对不同工况进行了仿真。仿真波形表明:MLADRC在带宽(负担)较低时,也可获得很好的控制效果,验证了MLADRC的正确性与可行性。In order to improve the transient performances of DC bus voltage and improve the low voltage ride through capability during the grid-connection process of permanent magnet synchronous motor,a modified linear active disturbance rejection control strategy based on the wind energy conversion system is proposed. A modified linear active disturbance rejection controller(MLADRC)is constructed and no compensation structure is introduced into MLADRC by selecting state variables. Then the performance of the MLADRC is analyzed in the frequency domain. Finally,it is applied to the voltage outer loop control of grid-side inverter in the wind energy conversion system,and the simulation of different working conditions is carried out. It can be seen from the simulation waveform that the MLADRC can also obtain a good control effect when the bandwidth(burden)is low,which verifies the correctness and feasibility of MLADRC.
分 类 号:TK81[动力工程及工程热物理—流体机械及工程]
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