基于PCH原理的三相PWM整流器L_2扰动抑制控制  

L_2 -Gain Disturbance Attenuation Control of PWM Converter Based on PCH System Principle

作　　者：侯培言[1] 于海生[1] 吴贺荣[1] 

机构地区：[1]青岛大学自动化工程学院,山东青岛266071

出　　处：《青岛大学学报（工程技术版）》2013年第3期27-32,共6页Journal of Qingdao University(Engineering & Technology Edition)

基　　金：国家自然科学基金资助项目(61174131;61104076);山东省自然科学基金资助项目(ZR2011FQ012)

摘　　要：针对三相电压型PWM整流器的非线性、强耦合和多变量等特性,本文采用能量成形和端口受控哈密顿控制方法,实现整流器的单位功率因数和输出直流电压稳定控制,而对建模误差等不确定因素造成的稳态误差引入PI控制予以消除,同时对整流器的负载变化,应用L2增益控制原理对负载扰动进行抑制,将该系统在Matlab/Simulink仿真平台上进行仿真实验,仿真结果表明,基于PCH原理的整流器系统稳态性能良好,加入L2扰动抑制控制后有更强的抗干扰能力。该方法可以有效抑制整流器负载变化等问题,增强了系统的抗干扰能力。For the features of the three-phase voltage PWM Converter including nonlinearity, high coupling and multivariable, this paper uses the energy-shaping and port-controlled Hamilton control to force the converter run in the unity power fact and ensure the output voltage stable. As for the model error and some other unknown facts in the converter, introducing PI control can restrain the steady-state error effectively. When the converter possesses load disturbance, using the L2-gain disturbance attenuation control can retrain the disturbance effectively. By simulating this system on the Matlab/Simulink, the simulation results show that the proposed scheme has good performance. So this method can retrain the disturbance effectively, and strengthen the capacity of resisting disturbance of the system.

关 键 词：PWM整流器 端口受控哈密顿 能量成形 L2增益扰动抑制 

分 类 号：TM461[电气工程—电器]