Evaluation on Topology of Switching Power Amplifier for Active Magnetic Bearings

Yefa Hu; Kezhen Yang; Xinhua Guo; Jian Zhou; Huachun Wu

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Evaluation on Topology of Switching Power Amplifier for Active Magnetic Bearings

Yefa Hu

^{1, 2},

Kezhen Yang

¹,

Xinhua Guo

^{1, 2},

Jian Zhou

¹,

Huachun Wu

^{*

1, 2}

¹ School of Mechanical & Electronic Engineering, Wuhan University of Technology
² Hubei Provincial Engineering Technology Research Center for Magnetic Suspension

Published: 21 November 2020 by MDPI in 1st International Electronic Conference on Actuator Technology: Materials, Devices and Applications session Actuators for robotics and autonomous applications

https://doi.org/10.3390/IeCAT2020-08521 (registering DOI)

Abstract:

Switching power amplifier is a key component of the actuator of active magnetic bearing, and its reliability has an important impact on the performance of magnetic bearing system. This paper analyzes the topologies of switching power amplifier of active magnetic bearing. In the case of different coil pair arrangements and bias current distributions, comprehensive evaluation on different topologies of switching power amplifier is introduced. The valuation has a guiding role in the design of switching power amplifier of active magnetic bearing.

Keywords: Active Magnetic Bearing, Switching Power Amplifier, Topology

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