中文摘要：

针对2极转矩绕组和4极悬浮绕组构成的无轴承异步电机悬浮力耦合问题,利用悬浮绕组数学模型及其等效电路图,分析了转子感应电流对悬浮力控制的影响。在考虑悬浮绕组转子感应电流导致悬浮力耦合的基础上,研究了逆系统的悬浮解耦控制策略,构造了以悬浮绕组励磁电流为位移控制量的悬浮力控制模型。仿真及实验结果表明,该模型能实现悬浮力完全解耦,其控制器可以独立控制相对应的悬浮力,为无轴承全速范围悬浮控制提供借鉴。

英文摘要：

For the levitation forces coupling of bearingless induction motors with two poles motor windings and four poles levitation windings, the influence of the rotor current for the levitation forces control is analyzed based on the levitation windings model and equal circuit. Considering the coupling of the levitation forces as the result of the levitation windings rotor induced current, the decoupling control is studied based on the inverse system, at the same time, the levitation control is modeled with the levitation windings excitation current as the controllable displacement variable. Simulation and experiment validate that the levitation forces are decoupled completely using this model, the controllers can control the forces separately. This method may be a reference for the levitation control in all speed scale.