基于滑模模型参考自适应系统观测器的永磁同步电机预测控制

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摘要针对一种三电平驱动的永磁同步电机控制系统,设计了一种无速度传感器有限集预测控制策略。首先,针对三电平逆变器驱动电路,采用有限集预测控制策略将其开关控制矢量看成一个有限集,在此有限集中搜索使目标函数最优的开关矢量,目标函数选择为输出误差电流,保证了电机定子电流波形的质量。其次,基于滑模模型参考自适应系统（MRAS）方法,利用电机本体的参考模型与电流模型的输出误差构造滑模面,设计了电机速度观测器,以改善位置和速度估计精度并提高系统的鲁棒性,并分析证明其稳定性。实验结果表明预测控制器较传统PID控制器能够提高定子电流波形质量,同时观测器能够较精确地估计永磁同步电机转子位置和速度,具有较好的鲁棒性。实现了对永磁同步电机的无传感器预测控制。

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	林茂
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关键词 ：永磁同步电机, 三电平逆变器, 预测控制, 滑模模型参考自适应系统观测器

Abstract：This paper proposed a novel sensorless model predictive control strategy for PMSM driven by an improved three-level inverter, to meet the high-power control demand. Firstly, the finite control set model predictive control (FCS-MPC) scheme for the drive system was introduced. By establishing objective function and rolling optimization, the switching states corresponding to the optimal voltage vector were chosen as the future output states of the inverter. Secondly, for the sensorless control of PMSM drive system, this paper designed an observer based on the theory of sliding and MRAS. The observer can estimate the position and speed of the motor rotor. Thus, the stability of the observer was proved. At last, the results of simulations and experiments verify the performance of the observer and the control strategy.

Key words： Permanent magnet synchronous motor three-level inverter predictive control sliding model reference adaptive system observer

收稿日期: 2015-07-14 出版日期: 2017-03-29

PACS:

TM341

通讯作者: 林茂男,1988年生,博士,研究方向为电力电子先进控制理论。E-mail: 496180444@qq.com

作者简介: 李颖晖女,1966年生,教授,博士生导师,研究方向为电力系统控制。E-mail: liyinghui66@163.com

引用本文:

林茂, 李颖晖, 吴辰, 袁国强, 李辰. 基于滑模模型参考自适应系统观测器的永磁同步电机预测控制[J]. 电工技术学报, 2017, 32(6): 156-163. Lin Mao, Li Yinghui, Wu Chen, Yuan Guoqiang, Li Chen. A Model Reference Adaptive System Based Sliding Mode Observer for Model Predictive Controlled Permanent Magnet Synchronous Motor Drive. Transactions of China Electrotechnical Society, 2017, 32(6): 156-163.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2017/V32/I6/156

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