考虑电流动态的无轴承异步电机解耦控制策略

发布时间：2019-02-09 16:44

【摘要】：目前的无轴承异步电机解耦控制策略没有考虑定子电流动态影响,限制了其控制性能的提高.为此,本文首先分析了电机的数学模型,在考虑转矩系统定子电流动态的前提下,建立了无轴承异步电机的状态方程;在系统可逆性分析的基础上,解析推导出了无轴承异步电机的逆系统动态数学模型;基于逆系统方法,研究了转速、转子磁链和两个径向位移分量之间的动态解耦控制策略.仿真研究结果表明:控制系统具有优良的动态解耦性能和较强的抗负载挠动能力.所提出的解耦控制策略是有效的、可行的,并可在一定程度上简化控制系统结构.
[Abstract]:The current decoupling control strategy of bearingless asynchronous motor does not consider the dynamic effect of stator current, which limits the improvement of its control performance. Firstly, the mathematical model of the motor is analyzed, and the state equation of the bearingless asynchronous motor is established on the premise of considering the stator current dynamics of the torque system. Based on the analysis of the reversibility of the system, the dynamic mathematical model of the inverse system of the bearingless asynchronous motor is derived, and the dynamic decoupling control strategy between the rotor flux, rotor flux and two radial displacement components is studied based on the inverse system method. The simulation results show that the control system has excellent dynamic decoupling performance and strong anti-load torsion ability. The proposed decoupling control strategy is effective and feasible, and can simplify the control system structure to a certain extent.
【作者单位】：河南科技大学信息工程学院;
【基金】：国家自然科学基金资助项目(51277053) 河南省国际科技合作项目(114300510029) 河南省教育厅自然基金资助项目(2010B510011)
【分类号】：TM343

【参考文献】