考虑滑模抖振的永磁同步电机反电势双级观测器

发布时间：2018-02-07 14:10

本文关键词： 永磁同步电机滑模抖振双级观测器反电势最优　出处：《控制理论与应用》2017年06期 　论文类型：期刊论文

【摘要】：针对传统反电势滑模观测器抖振造成的永磁同步电机转子位置检测、转速估算不准确问题,在传统初级反电势滑模观测基础上,提出一种新型反电势双级观测器.通过构造反电势状态观测方程,滤除初级滑模观测器输出反电势高频纹波分量,以获得更为平滑与准确的反电势最优值,采用Lyapunov稳定性理论证明收敛性.同时,考虑观测器增益系数以及低通截止频率的给定,根据实时转速反馈选取观测系数,使得观测系数跟随转速变化获取最优观测值,设计变截止频率降低处理器对低通滤波器相位补偿的计算.对比仿真和实验结果验证了改进双级观测器算法的有效性和实用性.
[Abstract]:Aiming at the problem of rotor position detection and speed estimation of PMSM caused by buffeting of traditional backEMF sliding mode observer, based on the traditional primary backEMF sliding mode observation, the rotor position detection and speed estimation of PMSM are discussed. In this paper, a novel two-stage inverse EMF observer is proposed. By constructing the state observation equation of the backEMF, the primary sliding mode observer can filter out the high-frequency ripple components of the backEMF to obtain a smoother and more accurate optimum value of the anti-EMF. The convergence is proved by using Lyapunov stability theory. Considering the given gain coefficient and low pass cut-off frequency of the observer, the observation coefficient is selected according to the real-time rotational speed feedback, which makes the observation coefficient follow the speed change to obtain the optimal observation value. The calculation of phase compensation for low pass filter with variable cutoff frequency is designed, and the effectiveness and practicability of the improved two-stage observer algorithm are verified by the comparison of simulation and experimental results.
【作者单位】：江苏科技大学电子信息学院;苏州绿的谐波传动科技有限公司;
【基金】：国家自然科学基金项目(61503161) 江苏省产学研前瞻性联合研究项目(BY2016073-01)资助~~
【分类号】：TM341;TP273

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