基于无差拍预测控制和扰动观测器的永磁同步电机电流控制

发布时间：2018-01-19 06:01

本文关键词： 永磁同步电机电流控制无差拍预测控制扰动观测器　出处：《电机与控制应用》2017年10期 　论文类型：期刊论文

【摘要】：永磁同步电机(PMSM)转速或转矩驱动系统都要求具有良好的电流控制性能,因此对电流环的控制至关重要。为了提高电流的动态性能和鲁棒性,基于无差拍预测控制和扰动观测器提出了一种新的PMSM电流控制方法。利用预测控制动态性能好,易于数字实现等优点,基于无差拍原理设计了预测电流控制器,但该方法对电机模型及参数依赖较大。针对实际应用中由于建模误差及参数变化等产生的扰动,设计了一种简单的扰动观测器,并用于电流环的前馈补偿控制,有效地提高了系统的鲁棒性。基于d SPACE平台完成了试验验证。试验结果表明:所提出的电流控制方法能实现电流的快速跟踪控制,而且具有较强的鲁棒性。
[Abstract]:PMSM (permanent Magnet synchronous Motor) speed or torque drive system is required to have good current control performance, so it is very important to control the current loop, in order to improve the dynamic performance and robustness of the current. A new PMSM current control method based on beat free predictive control and disturbance observer is proposed, which makes use of the advantages of good dynamic performance of predictive control and easy digital realization. The predictive current controller is designed based on the beat-free principle, but the method is highly dependent on the model and parameters of the motor, aiming at the disturbance caused by the modeling error and parameter change in practical application. A simple disturbance observer is designed and used in the feedforward compensation control of the current loop. The robustness of the system is improved effectively. The experimental results based on d SPACE platform show that the proposed current control method can realize the fast tracking control of the current. Moreover, it has strong robustness.
【作者单位】：山东工商学院信息与电子工程学院;青岛大学自动化与电气工程学院;
【基金】：国家自然科学基金项目(61403236,61703222) 山东工商学院博士启动基金项目(BS201511)
【分类号】：TM341
【正文快照】： 0引言永磁同步电机(Permanent MagnetSynchronous Motor,PMSM)具有效率高、功率密度大、可靠性高等优势,在电动汽车、风力发电等领域得到了广泛应用[1]。由于PMSM具有多变量、强耦合、非线性等特性,在转速或转矩驱动系统中,通常采用按转子磁场定向的矢量控制方案。在转速控制

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