摘要
为了解决永磁同步电机控制系统中传统滑模观测器在转子位置估计时存在的抖振问题,以定子电流和反电动势为状态变量,提出一种以边界层可变的双曲正切函数为切换函数的全阶滑模观测器,可以削弱系统抖振,有利于电机反电动势的准确观测;引入锁相环控制算法对转子位置和转速进行估算,避免了滤波器的引入而导致的相位误差问题;针对速度控制,采用具有扰动观测和补偿能力的滑模速度控制器替代传统速度控制环中的恒参数PI控制器,以改善系统动态性能。仿真与实验结果验证了所提观测器与控制策略的正确性与有效性。
In order to solve the chattering problem of the traditional sliding mode observer in the rotor position estimation of permanent magnet synchronous motor control system,the stator current and back-EMF are used as the state variables.Besides,a hyperbolic tangent function with variable boundary layer is proposed as the switching function,which can weaken the system chattering and facilitate the accurate observation of the motor back EMF.The phase-locked loop control algorithm is introduced to estimate the rotor position and speed,which avoids the phase error caused by the introduction of the filter.For speed control,a sliding mode speed controller with disturbance observation and compensation capability is used to replace the PI controller in the traditional speed control loop to improve system dynamic performance.Simulation and experimental results verify the correctness and effectiveness of the proposed observer and control strategy.
作者
王要强
冯玉涛
秦明
李明辉
Wang Yaoqiang;Feng Yutao;Qin Ming;Li Minghui(School of Electrical Engineering Zhengzhou University Zhengzhou 450001 China;XJ Schindler Elevator Co.Ltd Xuchang 461000 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2018年第24期5688-5699,共12页
Transactions of China Electrotechnical Society
基金
国家自然科学基金(51507155)
郑州大学青年骨干教师项目(人事[2017]11号)
郑州大学教育教学改革研究与实践项目(教务[2017]9号)资助项目
关键词
表贴式永磁同步电机
全阶滑模观测器
滑模控制器
鲁棒性
Surface permanent magnet synchronous motor
full-order sliding mode observer
sliding mode controller
robustness
