Open AccessLow‐noise design of fault‐tolerant flux‐switching permanent‐magnet machines
Author(s) -
Mao Yanxin,
Liu Guohai,
Zhao Wenxiang,
Ji Jinghua,
Wang Zheng
Publication year - 2018
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
ISSN - 1751-8679
DOI - 10.1049/iet-epa.2017.0392
Subject(s) - harmonics , magnet , vibration , noise (video) , counter electromotive force , inductance , torque , engineering , control theory (sociology) , acoustics , mechanical engineering , computer science , electrical engineering , physics , voltage , control (management) , artificial intelligence , image (mathematics) , thermodynamics
The high variable flux density in the air‐gap of fault‐tolerant flux‐switching permanent‐magnet (FT‐FSPM) machine results in rich harmonics of the magnetic field, thus generating large vibration and noise. This study proposes two novel FT‐FSPM machines which can effectively reduce the radial pressure, thus reducing the vibration and noise. First, the radial pressure of the initial FT‐FSPM machine is analysed. Second, the novel proposed FT‐FSPM machines are introduced and analysed. Third, the electromagnetic performance, including back electromotive force, output torque, inductance, and radial pressure harmonics, of the initial and the two proposed machines are compared by finite element method. Then, the vibration modes with corresponding natural frequencies are predicted. The vibration and noise are simulated by boundary element method. Finally, the effectiveness of the low‐noise design is verified by measurement results.