三相电压源型PWM整流器鲁棒自适应控制  

Robust Adaptive Control for Three⁃phase Voltage Source PWM Rectifier

作　　者：沈雪红 陈才学[2] SHEN Xuehong;CHEN Caixue(School of Communication Engineering,Zhejiang Post and Telecommunication College,Zhejiang Shaoxing 312016,China;The College of Information Engineering of Xiangtan University,Hunan Xiangtan 411105,China)

机构地区：[1]浙江邮电职业技术学院通信工程学院,浙江绍兴312016 [2]湘潭大学信息工程学院,湖南湘潭411105

出　　处：《电力电容器与无功补偿》2020年第6期137-141,共5页Power Capacitor & Reactive Power Compensation

基　　金：国家自然基金面上项目(51577161)。

摘　　要：为克服物理参数摄动对三相电压源型PWM整流器输出电能质量的影响,提高动态响应速度,本文分析和建立了PWM整流器参数摄动数学模型,基于非线性系统Lyapunov稳定理论,提出一种鲁棒自适应控制策略,并严格推导和论证了控制系统的稳定性。仿真结果表明,相对于传统前馈解耦控制方法,在物理参数出现较大摄动时,系统依然能够保持较好的稳定性,且输入电流谐波较少,当负载功率突变时,新的控制方法能降低整流电压超调,缩短系统稳定时间。新的控制方法对于提高系统鲁棒稳定能力和外部干扰抑制能力具有明显优势。In order to overcome the influence of physical parameters perturbation on the output power quality of three⁃phase voltage source PWM rectifier and to improve the dynamic response speed,in this paper,the dynamic mathematical model of parameter perturbation of PWM rectifier is analyzed and set up and,on the basis of the non⁃linear system Lyapunov theory,a kind of robust adaptive control strategy is proposed and the stability of the control system is strictly deducted and demonstrated.It is shown by the simulation result that compared to the traditional feed forward de⁃coupling control method and in case of bigger perturbation of physical parameter,the system can still maintain good stability and the input current harmonic is less.In case of sudden variation of lad power,the new control method can reduce the voltage overshoot and shorten the stabilization time of the system.The new control method has the better ability to stabilize the system and suppress the outer interference.

关 键 词：PWM整流器 物理参数摄动 模型不确定 鲁棒自适应 Lyapunov稳定 

分 类 号：TM461[电气工程—电器]