论文标题
自感应滞后型无轴承电机
Self-Sensing Hysteresis-Type Bearingless Motor
论文作者
论文摘要
无轴承电动机使用单个定子组件在转子上施加扭矩和磁悬浮力，使这些机器通过无摩擦操作紧凑，因此非常适合高速应用。阻止广泛使用无轴承电动机的一个主要挑战是需要气隙位置传感器，这通常是昂贵的。在这里，我们提出了一种使用通过注射的高频信号扩增的定子线圈的电感变化来估计磁滞型无轴承电动机的径向位置。我们进行了有限元（FE）模拟以证明其可行性，并为实验验证构建了一个原型自感应无轴承电动机。
Bearingless motors use a single stator assembly to apply torque and magnetic suspension forces on the rotor, making these machines compact with frictionless operation and thus well suited to high-speed applications. One major challenge that prevents wide usage of bearingless motors is the need for air-gap position sensors, which are typically expensive. Here we present a method to estimate the radial position of a hysteresis-type bearingless motor using the inductance variation of the stator coils amplified by an injected high-frequency signal. We have carried out finite element (FE) simulations to demonstrate its feasibility, and have constructed a prototype self-sensing bearingless motor for experimental validations.
