Design of the Power Amplifier for Magnetic Bearings Based on the Three-level PWM Modulation

DOI

10.2991/icmra-15.2015.130How to use a DOI?

Keywords

Electronics; Three-level; PWM modulation; Power amplifier; Magnetic bearings

Abstract

As it is scant for the linear power amplifier and the two-level switching power amplifier, the principle is analyzed for the three-level power amplifier. It is proposed for the power amplifier for magnetic bearings based on the three-level PWM modulation technique. The circuit is designed for the implementation of the function. The two triangular carriers are formed by the triangular wave superimposing the positive and negative voltage bias, and then, the two drives are formed by comparing the current error signal and the two triangular carriers based on the voltage comparator. The experiment results show that the method can achieve the three-level work, reduce the output current ripple, and have good characteristics. The conclusions have some guiding significance to the design of the three-level power amplifier for magnetic bearings.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xiaodan Ren
AU  - Qiang Yin
AU  - Yue Yu
AU  - Hao Pang
AU  - Zecheng Xiong
AU  - Qiliang Zhao
PY  - 2015/04
DA  - 2015/04
TI  - Design of the Power Amplifier for Magnetic Bearings Based on the Three-level PWM Modulation
BT  - Proceedings of the 3rd International Conference on Mechatronics, Robotics and Automation
PB  - Atlantis Press
SP  - 672
EP  - 675
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmra-15.2015.130
DO  - 10.2991/icmra-15.2015.130
ID  - Ren2015/04
ER  -