[关键词]
[摘要]
无位置传感器控制是船舶电力推进系统可靠性的重要保障。针对目前没有单一算法能够实现全转速范围的无位置传感器控制,提出了一种基于自抗扰的无位置传感器混合控制策略。对于电机零、低速区域采用高频电流注入法估算转子位置,对于中、高速区域采用扩展反电动势(EMF)法估算转子位置,并将2种估算方案集成到同一控制结构中,分别设计了适用于其电流内环的自抗扰控制器,使用扩张状态观测器实现了高性能的位置估计,最后针对2种算法切换的问题给出了融合过渡方案。实物平台验证了算法的精准性及强鲁棒性,为实现全转速范围船舶推进内置式永磁同步电机(IPMSM)无位置传感器控制提供了依据。
[Key word]
[Abstract]
Position sensorless control is an important guarantee for the reliability of marine electric propulsion system. There is no single algorithm that can realize sensorless control in the whole speed range at present. In view of this fact, a novel position sensorless hybrid control strategy based on active disturbance rejection control (ADRC) is proposed. High frequency current injection method is used to estimate the rotor position in zero and low speed regions. In medium and high speed regions, the extended back electromotive force (EMF) method is used to estimate the rotor position. The two estimation schemes are integrated into the control structure, the ADRC controllers for the inner current loop are designed respectively, and the extended state observer is used to achieve high performance position estimation. Finally, a fusion-transition scheme is proposed to solve the problem of switching between the two algorithms. The physical platform experiment verifies the accuracy and strong robustness of the algorithm, which provides a basis for the realization of position sensorless control of interior permanent magnet synchronous motor (IPMSM) in the whole speed range.
[中图分类号]
[基金项目]
舟山市公益类科技计划项目(2017C33110);浙江省基础公益研究计划项目(LGG20E070001)