摘要
为了提高感应电机驱动系统的性能,设计了一种基于滑模观测器的感应电机模型预测转矩控制策略。模型参考自适应系统可以准确地估计出转子转速,但无速度传感器模型预测转矩控制方案不仅需要估计转子转速,还需要估计磁链。故在模型参考自适应系统中将滑模观测器用作参考模型。同时,通过优化滑动函数和H∞方法设计了适当的增益以解决滑模方法存在的抖震问题。试验结果表明新方案在较宽的转速范围内能够稳定实施,负载性能较优,同时还具有动态快速、结构简单、易于实现的优点。
In order to improve the performance of the induction motor(IM)driving system,a sliding mode observerbased model predictive torque control(PTC)strategy for IM driving system was designed.The model reference adaptive system(MRAS)can accurately estimate the rotor speed,but the speed sensorless PTC scheme not only needs to estimate the rotor speed,but also needs to estimate the flux linkage.Therefore,the sliding mode observer was used as a reference model in the MRAS.At the same time,the chattering problem of the sliding mode method was solved by optimizing the sliding function and designing an appropriate gain through the H∞method.The test results show that the new scheme can be implemented stably in a wide speed range with better load performance,and also has the advantages of dynamic swiftness,simple structure and easy implementation.
作者
刘红艳
孔繁镍
麦艳红
LIU Hongyan;KONG Fannie;MAI Yanhong(School of Mechanical and Electrical Engineering,Nanning College for Vocational Technology,Nanning 530028,Guangxi,China;College of Electrical Engineering,Guangxi University,Nanning 530028,Guangxi,China)
出处
《电气传动》
北大核心
2019年第12期9-16,共8页
Electric Drive
基金
2018年度广西高校中青年教师基础能力提升项目（2018KY0974）
国家自然科学基金（51167003）
广西自然科学基金（2014GXNSFAA118320）
关键词
感应电机
模型预测控制
观测器
转矩
induction motor
model predictive control
observer
torque
