永磁同步电机改进滑模无位置传感器控制  

Improved Sliding Mode Position Sensorless Control of Permanent Magnet Synchronous Motor

作　　者：曲星宇 衣冠正 QU Xingyu;YI Guanzheng(School of Electrical Engineering,Shenyang University of Technology,Shenyang 110870,China)

机构地区：[1]沈阳工业大学电气工程学院,沈阳110870

出　　处：《微特电机》2024年第5期40-47,51,共9页Small & Special Electrical Machines

基　　金：沈阳市关键技术攻关“揭榜挂帅”专项(22-316-1-19)。

摘　　要：永磁同步电机运行在中低速时采用传统滑模控制存在较大误差,基于滑模控制算法在确保稳定性的情况下,将自适应滑模控制器结合高频正交信号注入法,提高电机低速运行时转子定位精度。针对永磁电机高速运行时采用传统滑模控制在负载突变时转速波动超调量大的问题,改进设计一种超螺旋滑模观测器,优化改良电机运行时的动态响应。使用李雅普诺夫稳定性判据对改进后的滑模观测器进行了稳定性分析,仿真验证,改进的滑模观测器控制策略能够提高包括零低速在内宽速度范围的转子定位精度和控制系统鲁棒性。The use of traditional sliding mode control method in the operation of permanent magnet synchronous motors at medium to low speeds often results in significant errors.Based on the sliding mode control algorithm,an adaptive sliding mode controller was combined with a control algorithm of high-frequency orthogonal signal injection to improve the rotor positioning accuracy of the motor at low speed while ensuring stability.In response to the problem of large overshoot of speed fluctuations when using traditional sliding mode control for high-speed operation of permanent magnet motors under sudden load changes,an improved design of a super twisted sliding mode observer was proposed to optimize and improve the dynamic response of the motor during operation.The stability analysis of the improved sliding mode observer was carried out using the Lyapunov stability criterion.Through simulation verification,the improved sliding mode observer control strategy can improve the rotor positioning accuracy and control system robustness over a wide speed range including zero and low speed.

关 键 词：永磁同步电机 无位置传感器控制 高频信号注入 滑模控制器 滑模观测器 超扭曲滑模 

分 类 号：TM351[电气工程—电机]