一种永磁同步电机失磁故障容错预测控制算法

发布时间：2018-10-07 18:16

【摘要】：针对永磁同步电机失磁故障导致牵引系统带负载能力降低的问题,提出一种基于磁链在线检测容错预测控制算法。首先,根据永磁同步电机预测控制模型,详细分析了永磁体发生失磁故障对电流控制和电机运行状态的影响。其次,设计了基于滑模变结构的观测器,利用滑模变结构等值控制原理,建立了实时估计永磁体磁链算式。通过永磁体磁链算式,进而计算状态电流观测值。最后,提出了容错预测控制算法。该算法将状态电流观测值作为反馈量输入到容错预测控制器中,以使响应电流准确跟踪给定电流,从而达到容错控制的目的。通过仿真及实验验证,证明了所提算法的可行性和有效性。
[Abstract]:A fault tolerant predictive control algorithm based on on-line flux detection is proposed to solve the problem that the load capacity of traction system is reduced due to the failure of permanent magnet synchronous motor (PMSM). Firstly, according to the predictive control model of PMSM, the influence of the failure of permanent magnet on current control and motor operation is analyzed in detail. Secondly, the observer based on sliding mode variable structure is designed, and the flux calculation formula of real time estimation permanent magnet is established by using sliding mode variable structure equivalent control principle. The state current observation value is calculated by the flux chain formula of permanent magnet. Finally, a fault-tolerant predictive control algorithm is proposed. In this algorithm, the state current observations are input into the fault-tolerant predictive controller as feedbacks, so that the response current can accurately track the given current and thus achieve the purpose of fault-tolerant control. Simulation and experimental results show that the proposed algorithm is feasible and effective.
【作者单位】：湖南工业大学电气与信息工程学院;国防科技大学机电工程与自动化学院;中车株洲电力机车研究所有限公司;
【基金】：国家自然科学基金(61473117) 湖南省自然科学基金(2016JJ5012,2017JJ4031) 电传动控制与智能装备湖南省重点实验室(2016TP1018)资助
【分类号】：TM341

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