弱抖振强扭曲电压型PWM整流器控制  

Control of Weak Chattering Super Twisting Voltage PWM Rectifier

作　　者：李宏城 谷志锋 刘雅芳 张燕芬 高升 刘靖波 单锁兰 LI Hongcheng;GU Zhifeng;LIU Yafang;ZHANG Yanfen;GAO Sheng;LIU Jingbo;SHAN Suolan(School of Electrical and Electronics Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;6613 Command,Beijing 100144,China)

机构地区：[1]石家庄铁道大学电气与电子工程学院,石家庄050043 [2]6613部队,北京100144

出　　处：《电力电容器与无功补偿》2021年第5期154-160,共7页Power Capacitor & Reactive Power Compensation

基　　金：国家自然基金项目(51407196,51677180);河北省自然基金项目(E2017506007);石家庄市军民融合项目(201060104A);河北省重点研发计划项目(20354501D);全国大学生创新创业计划项目(S202010107044);2020石家庄铁道大学校级创新项目(YC2020065)。

摘　　要：为降低物理参数摄动及负载扰动对稳定控制的影响,提高电压型PWM整流器的电源品质,降低输入电流谐波含量,通过在传统强扭曲控制(super⁃twisting,ST)算法中引入双曲正切函数,提出一种弱抖振强扭曲控制(weak chattering super⁃twisting,WST)方法。通过构建电压型PWM整流器非线性鲁棒控制仿真模型,在负载突变及物理参数大范围摄动条件下,对传统ST及WST算法进行了控制算法仿真对比分析,仿真结果表明,WST算法可以明显缩短电压稳定时间,并能有效降低物理参数摄动条件下的交流输入电流谐波含量,对于降低整流电压的纹波具有明显效果,对于提升电压型PWM整流器抗负载冲击及模型不确定性具有较好的鲁棒性。In order to reduce the influence of physical parameter perturbation and load disturbance on stability control,improve the power quality of voltage PWM rectifier and reduce the harmonic content of input current,a kind of weak chattering Super-Twisting(WST)method is proposed by way of introducing the hyperbolic tangent function in the traditional Super-Twisting(ST)algorithm.By constructing a nonlinear robust control simulation model of the voltage-type PWM rectifier,the traditional ST and WST algorithms are compared and analyzed at the condition of sudden load change and large-scale perturbation of physical parameters.The simulation results show that the WST algorithm can significantly shorten the voltage stabilization time and effectively reduce the harmonic content of the AC input current under the perturbation of physical parameters.It has obvious effect on reducing the ripple of rectified voltage and has a good robustness on improving the load-shock resistance and model uncertainty of voltage PWM rectifier.

关 键 词：弱抖振 强扭曲控制 双曲正切函数 鲁棒控制 自适应控制 电压型PWM整流器 

分 类 号：TM461[电气工程—电器]