Title :
Fault-Tolerant Performance of a Novel Flux-Switching Permanent Magnet Linear Machine Based on Harmonic Current Injection
Author :
Lei Huang ; Haitao Yu ; MinQiang Hu ; Shigui Zhou ; Li Hao
Author_Institution :
Eng. Res. Center for Motion Control of MOE, Southeast Univ., Nanjing, China
Abstract :
A novel flux-switching permanent magnet linear machine (FSPMLM) with fault-tolerant capability is proposed. First, the structure and operation principle of the proposed FSPMLM are elaborated by comparing them to the existing FSPMLM. Second, considering the contribution of the reluctance thrust component, the thrust performance of the FSPMLM based on the static characteristics is analyzed under normal and fault conditions. The cause of thrust ripple of the proposed FSPMLM is also identified, and a fault-tolerant current control strategy based on the current harmonic injection method is implemented to compensate for the thrust ripple. Two-dimensional transient finite element method is used to investigate the thrust performance under normal and fault conditions. Finally, the results of finite element analysis are validated by the results obtained in the experiment.
Keywords :
fault tolerance; finite element analysis; permanent magnet machines; 2D transient finite element method; FSPMLM operation principle; fault-tolerant performance; flux-switching permanent magnet linear machine; harmonic current injection; thrust ripple; Equations; Fault tolerance; Fault tolerant systems; Force; Forging; Harmonic analysis; Mathematical model; Fault tolerance; finite element method (FEM); harmonic current injection; linear machine; permanent magnet (PM);
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2011.2151845