基于自适应控制的变流器长电缆驱动引起的过电压抑制策略研究  

RESEARCH ON SUPPRESSION STRATEGY FOR OVERVOLTAGE CAUSED BY LONG CABLE DRIVES OF CONVERTER BASED ON ADAPTIVE CONTROL

作　　者：江川[1] 何山[1] 王维庆[1] 祁希 郝林钊 程静[1] Jiang Chuan;He Shan;Wang Weiqing;Qi Xi;Hao Linzhao;Cheng Jing(^School of Electrical Engineering,Xirijiang University,Urumqi 830049,China)

机构地区：[1]新疆大学电气工程学院,乌鲁木齐830049

出　　处：《太阳能学报》2021年第1期187-191,共5页Acta Energiae Solaris Sinica

基　　金：新疆维吾尔自治区重点实验室开放课题(2018D04005);国家自然科学基金(51767024,51667020);新疆维吾尔自治区自然科学基金(2018D01C046)。

摘　　要：建立长电缆传输等效电路模型,探究电机端过电压产生机理,提出基于自适应控制的过电压抑制策略,消除系统阻抗参数变化的干扰,校正变流器输出电压,抑制电机端过电压。根据直驱永磁风力发电系统参数仿真分析,结果表明自适应抑制策略可有效地抑制电机端过电压,缩短电压超调振荡时间,对系统阻抗参数变化干扰有很强的鲁棒性,可提高变流器长电缆驱动系统的可靠性。A long cable transmission model is established to solve this problem,the generation mechanism of motor terminal overvoltage is explored,and over-voltage suppression strategy with adaptive control is proposed. The disturbance of system impedance parameters eliminated,and the converter output voltage is adjusted to suppress the motor terminal over-voltage. According to the simulation of the parameters of the direct-drive permanent magnet wind power generation system,the results show that the adaptive suppression strategy can effectively suppress the o ver-voltage of the motor terminal,shorten the overshooting time of the voltage overshoot,and have strong robustness to the disturbance of the system impedance parameters,thereby improving the reliability of the long drives system.

关 键 词：脉冲宽度调制 自适应控制系统 传输线理论 仿真建模 电机端过电压 

分 类 号：O325[理学—一般力学与力学基础] TK79[理学—力学]