Direct Control of Radial Displacement for Bearingless Permanent-Magnet-Type Synchronous Motors
Direct Control of Radial Displacement for Bearingless Permanent-Magnet-Type Synchronous Motors
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DOI：
10.1109/tie.2008.2003219
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发表时间：
2009-02
影响因子：
7.7
通讯作者：
Shaoru Zhang;F. Luo
中科院分区：
文献类型：
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作者：
Shaoru Zhang;F. Luo
近年来，通过控制转子径向位移来稳定悬浮转子的无轴承电机成为研究的热点。传统的转子径向位移控制方法没有研究径向悬浮力与径向位移之间的关系，存在计算复杂、整定耗时等缺点。为了克服这些缺点，提出了一种新的方法来控制转子的径向位移和径向悬浮力之间的关系的基础上的径向位移。采用转子磁场定向的方法实现了电磁转矩和径向悬浮力的解耦。该方法直接控制无轴承永磁同步电动机转子的径向位移。此外，还应用该方法设计了一个控制系统.仿真和实验结果表明，所提出的控制策略能够有效地实现转子径向位置控制的稳定运行。
In recent years, research has been focused on bearingless motors to suspend the rotor stably by controlling rotor radial displacement. Without studying the relationship between the radial suspension force and radial displacement, the traditional control method for rotor radial displacement has some drawbacks such as the complexity of computation and time-consuming tuning. In order to overcome these drawbacks, a novel approach to control the rotor radial displacement was proposed based on the relationship between the radial displacement and radial suspension force. The rotor flux orientation is adopted to decouple the electromagnetic torque and radial suspension force. This approach directly controls the rotor radial displacement of bearingless permanent-magnet-type synchronous motors. In addition, a control system was designed by applying this approach. The simulation and experimental results show that the proposed control strategy is effective in realizing stable operation in rotor radial position control.