无线充电系统无抖振滑模稳压输出控制策略  

Stablizing Voltage Output Control Strategy of Wireless Power Transfer System Based on Chattering-free Sliding Mode Control

作　　者：侯隽 黄东晓 黄卫东 HOU Jun;HUANG Dong-xiao;HUANG Wei-dong(Fujian University of Technology,Fuzhou 350118,China)

机构地区：[1]福建工程学院,机械与汽车工程学院,福建福州350118 [2]中国科学院海西研究院泉州装备制造研究中心,电机驱动与功率电子国家地方联合工程研究中心,福建泉州362000

出　　处：《电力电子技术》2022年第9期94-96,110,共4页Power Electronics

基　　金：泉州市科技计划项目(2021C020R);福建省科技计划项目(2020T3016)。

摘　　要：磁耦合无线充电系统在线圈偏移、给定电压变化等情况下,采用滑模控制(SMC)容易产生抖振,输出电压纹波大。这里提出一种模糊逻辑设计并切换滑动扇区的无抖振滑模输出电压控制策略,根据被控电压误差设计不同的滑动扇区,且趋近律基于连续变化项进行设计。该算法可以消除扰动产生的误差与抖振。为提高控制系统的鲁棒性,采用模糊规则设计了切换控制与等效控制增益系数。实验结果表明,该方法能提高系统的抗偏移能力,保证系统稳定输出。In the case of coil offset and the variation of given voltage,the magnetic coupling wireless charging systems based on sliding mode control(SMC) easily produce chattering,and large output voltage ripple.A chattering-free sliding mode output voltage control strategy for fuzzy logic design and switching of sliding sectors is proposed.According to the controlled voltage error,different sliding sectors and a hierarchical approach law based on continuous changes are designed to eliminate the error and chattering caused by the disturbance.To improve the robustness of the control system,the switch and equivalent control gain coefficients are designed by fuzzy rules.The experimental results show that the method can improve the anti-offset ability of the system and ensure the stable output of the system.

关 键 词：无线充电系统 无抖振滑模 滑动扇区 模糊规则 

分 类 号：TM910.6[电气工程—电力电子与电力传动]