基于延迟补偿的永磁同步电机并行自抗扰控制
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TH122

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长沙市自然科学基金(kq2208424)项目资助


Time delay compensation-based parallel active disturbance rejection control for permanent magnet synchronous motors
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    摘要:

    为了解决永磁同步电机在多工况下转速易受到内外扰动的影响,提出一种基于延迟补偿的并行线性自抗扰控制策略。 针对永磁同步电机可能受到信号处理、逆变器响应等因素从而引入的外部时滞效应的问题,引入 Smith 预估器与自抗扰控制相 结合,使控制系统更加精确、快速地响应内部参数变化和外部扰动。 同时,针对线性自抗扰控制器(LADRC)在有限带宽内其抗 扰性能较差的问题,设计了并行线性自抗扰控制器,在保持其带宽不变与参数易于整定的同时,有效提高其抗扰动能力。 最后, 对自抗扰控制器的稳定性进行了分析,并在此基础上进行了参数设计与扰动性能分析。 仿真与实验结果表明,所提算法相比 LADRC 在电机受到速度阶跃、负载扰动与内部参数变化时,在调整时间上分别提升了 52. 5% 、49. 5% 与 42. 4% ,从而验证了该 控制策略能有效增强永磁同步电机在多工况下抗内外扰动与速度跟踪能力。

    Abstract:

    To address the issues of speed susceptibility to internal and external disturbances under various operating conditions in permanent magnet synchronous motor (PMSM), a parallel linear active disturbance rejection control (PLADRC) strategy based on delay compensation is proposed. Aiming at the problem that PMSM may be subject to the external time lag effect introduced by signal processing, inverter response, and other factors, the Smith predictor is introduced in combination with the active disturbance rejection control (ADRC) to make the control system respond to the internal parameter changes and external perturbations more accurately and quickly. Meanwhile, for the problem of poor anti-disturbance performance of linear ADRC (LADRC) in limited bandwidth, a parallel LADRC is designed to effectively improve its anti-disturbance capability while keeping its bandwidth unchanged and its parameters easy to adjust. Finally, the stability of the LADRC is analyzed, and the parameter design and perturbation performance are analyzed on this basis. Simulation and experimental results show that the proposed algorithm improves the adjustment time by 52. 5% , 49. 5% , and 42. 4% compared with LADRC after the motor is subjected to speed step, load perturbation, and internal parameter change, which verifies that the control strategy effectively enhances the resistance to internal and external perturbation and speed tracking ability of the PM synchronous motor under multiple operating conditions.

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尹诗荀,郑志安,朱俊杰.基于延迟补偿的永磁同步电机并行自抗扰控制[J].仪器仪表学报,2024,45(3):275-285

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  • 在线发布日期: 2024-05-31
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