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http://hdl.handle.net/10397/43497
Title: | Electromagnetic performance analysis of novel flux-regulatable permanent magnet machines for wide constant-power speed range operation | Authors: | Wang, Y Niu, S Fu, W |
Issue Date: | 2015 | Source: | Energies, Dec. 2015, v. 8, no. 12, p. 13971-13984 | Abstract: | Two novel structures of permanent magnet (PM) machine, namely a hybrid excitation flux modulation machine (HEFMM) and a variable flux memory machine (VFMM), which have excellent field-weakening capability, are presented in this paper. The HEFMM incorporates the advantages of parallel hybrid excitation structure and flux modulation structure, so as to increase the torque density as well as increase the constant-power speed range. Inspired by the HEFMM, aiming to further improve the efficiency of machine, theVFMMwith aluminum-nickel-cobalt (AlNiCo) PMs in the inner stator which can be magnetized by the current pulse of the direct current (DC) windings is developed. With double-stator structure, flux modulation effect in both machines can be employed to realize the hybrid excitation and regulate the air-gap flux density readily. The operation principle is illustrated and the static and steady performances of the machines are analyzed and compared with time stepping finite element analysis, which validates the effectiveness of the proposed designs. | Keywords: | Field weakening Finite element method (FEM) Memory machine Wide speed range Wind power |
Publisher: | Molecular Diversity Preservation International (MDPI) | Journal: | Energies | EISSN: | 1996-1073 | DOI: | 10.3390/en81212407 | Rights: | © 2015 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/). The following publication Wang, Y., Niu, S., & Fu, W. (2015). Electromagnetic performance analysis of novel flux-regulatable permanent magnet machines for wide constant-power speed range operation. Energies, 8(12), (Suppl. ), 13971-13984 is available athttps://dx.doi.org/10.3390/en81212407 |
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