Dual Field-Oriented Control of Bearingless Motors with Combined Winding System
Dual Field-Oriented Control of Bearingless Motors with Combined Winding System
复制标题
具有组合绕组系统的无轴承电机的双磁场定向控制
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
S. Silber
中科院分区：
文献类型：
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作者：
W. Gruber;S. Silber
磁场定向控制已成为永磁同步电机高效驱动的标准方法。在这项工作中，一个类似的控制方法，提出了径向悬浮力产生的无轴承驱动器与组合绕组系统。组合绕组组根据转子角度在每相产生电机转矩和悬浮力。与分离的绕组系统相比，这允许提高效率、更简单的制造和更高的紧凑性。然而，在这种情况下，力和扭矩的解耦，这是必要的适当的无轴承操作，必须在控制方案中实现。在这项工作中，提出了使用转换到两个不同的旋转坐标系来解决这个问题。因此，对于全无轴承电机操作，相同结构的两个不同的磁场定向控制方案必须并行工作，一个用于力生成，另一个用于转矩生成。最后叠加必要的相电流。因此，可以使用经过充分验证的和最先进的工业程序来实现无轴承永磁电机的控制方案，类似于标准电动机。
Field-oriented control has become a standard method to generated drive torque in permanent magnet excited synchronous drives with high efficiency. In this work, a similar control approach is proposed for radial suspension force generation in bearingless drives with combined winding system. Combined windings sets generate both motor torque and suspension force in each phase depending on the rotor angle. This allows increased efficiency, simpler manufacture and higher compactness compared to separated winding systems. However, in this case the decoupling of force and torque, which is necessary for proper bearingless operation, has to be achieved in the control scheme. Using transformations into two different rotating coordinate systems is proposed in this work to solve this issue. Hence, for full bearingless motor operation, two different field-oriented control schemes of the same structure have to work in parallel, one for force generation and the other for torque generation. The necessary phase currents are finally superposed. Thus, well proven and state-of-the-art industrial procedures can be used to implement the control scheme for a bearingless permanent magnetic motor, similar to a standard electric motor.