矩阵式变换器驱动异步电机调速系统的非线性自抗扰控制  

A Nonlinear Auto-Disturbance Rejection Control for Matrix Converter Fed Induction Motor Drive System

作　　者：孙凯[1] 黄立培[1] 梅杨[1] 

机构地区：[1]清华大学电力系统及大型发电设备安全控制和仿真国家重点实验室,北京100084

出　　处：《电工技术学报》2007年第12期39-45,共7页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(50377014)

摘　　要：相对于传统的脉宽调制(PWM)型变频器,矩阵式变换器驱动异步电机调速系统具有一系列优势,如不需要直流储能元件,高输入功率因数和能量双向流通能力。但是,由于矩阵式变换器的直接变换特性,异步电机系统的调速性能易受到矩阵式变换器输入侧电压扰动的影响。本文将一种具有良好鲁棒性的非线性自抗扰控制器(ADRC)应用于矩阵式变换器驱动异步电机调速系统,设计了控制器的结构和参数,用其代替了传统的比例-积分(PI)调节器。在调速系统中,非线性自抗扰控制器对由外部扰动和模型不确定性引起的内部扰动进行估计和补偿。仿真结果表明,采用上述非线性控制器提高了调速系统在矩阵式变换器输入电压非正常工况下的抗干扰能力,并改善了异步电机的动态调速性能。Matrix converter （MC） fed induction motor drive has attractive advantages over conventional pulse width modulation （PWM） inverter drives for the absence of large dc-link capacitors, higher input power factor and energy regeneration capability. However, due to the direct conversion characteristic of matrix converter, the drive performance of induction motor is easy to be influenced by input voltage disturbances of MC. A nonlinear auto-disturbance rejection controller （ADRC） is applied to the MC fed induction motor drive system, taking the place of the traditional proportional-integral （PI） controller. In the drive system, the effects of external disturbance and model uncertainty are estimated and compensated by ADRC. Using this controller, the anti-disturbance capability of the drive system under abnormal input voltage conditions can be enhanced. In addition, thedynamic drive performance of induction motor are also improved, such as fast responses of speed change and load torque change. Simulation results verify the effectiveness of the designed controller.

关 键 词：矩阵式变换器 异步电机 非线性控制 自抗扰控制 

分 类 号：TM46[电气工程—电器]