摘要
电流环是实现高精度永磁同步电机(PMSM)驱动的关键,然而PMSM驱动器的电流回路中存在很多电流谐波,降低了PMSM驱动器的性能。为抑制这些谐波,本文提出一种基于自抗扰控制(ADRC)+改进重复控制的PMSM矢量控制方案。首先,分析了PMSM电流谐波产生来源,同时引入线性自抗扰控制(LADRC)抑制直流扰动;其次,提出一种改进重复控制的奇次谐波重复控制器,将其与LADRC并联并分析其稳定性。针对传统重复控制采样频率与外部信号电流谐波频率比值不为整数时导致的频率偏移问题,引入无限脉冲响应滤波器(IIR)对频率比值分数部分构成的延时环节进行逼近,进一步减小电流谐波。最后,通过仿真和实验验证,所提出的控制方法能对电流谐波进行有效抑制。
The current loop is critical for achieving high-precision control in permanent magnet synchronous motor(PMSM)drives.However,current harmonics in PMSM drive systems degrade performance.To address this,a vector control scheme was proposed combining active disturbance rejection control(ADRC)with improved repetitive control for PMSM.First,the sources of current harmonics in PMSM were analyzed,and linear active disturbance rejection control(LADRC)was introduced to suppress DC-side disturbances.Second,an improved repetitive controller for odd-order harmonics was proposed,which is connected in parallel with LADRC.The stability of this combined structure was rigorously analyzed.To resolve frequency deviation issues caused by non-integer ratios between the sampling frequency of traditional repetitive control and external harmonic frequencies,an infinite impulse response(IIR)filter was incorporated to approximate the fractional delay component,thereby further reducing current harmonics.Simulation and experimental results verify that the proposed method effectively suppresses current harmonics in PMSM drives.
作者
康尔良
李公达
董新宝
KANG Erliang;LI Gongda;DONG Xinbao(School of Electrical and Electronic Engineering,Harbin University of Science and Technology,Harbin 150080,China;Engineering Technology Research Center of High Efficiency Direct-Drive System in Universities in Heilongjiang,Harbin University of Science and Technology,Harbin 150080,China)
出处
《电机与控制学报》
北大核心
2025年第7期96-107,共12页
Electric Machines and Control
基金
国家重点研发计划(2020YFF0402198)。
关键词
永磁同步电机
自抗扰控制
重复控制
电流谐波抑制
无限脉冲响应滤波器
permanent magnet synchronous motor
active disturbance rejection control
repetitive control
current harmonic suppression
infinite impulse response filter
