Open AccessNon‐linear analytical modelling and optimisation of a 12/8 rotor excited flux‐switching machine
Author(s) -
Mohammadi Ajamloo Akbar,
Ghaheri Aghil,
Shirzad Hossein,
Afjei Ebrahim
Publication year - 2020
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.815
H-Index - 97
eISSN - 1751-8679
pISSN - 1751-8660
DOI - 10.1049/iet-epa.2019.0732
Subject(s) - rotor (electric) , excited state , flux (metallurgy) , control theory (sociology) , physics , computer science , materials science , engineering , mechanical engineering , atomic physics , artificial intelligence , control (management) , metallurgy
Rotor excited flux‐switching permanent magnet machines (REFSPMs) have been recently introduced exhibiting high power density and low permanent magnet consumption. Despite the advantages, 12/8 configuration of REFSPM has an intrinsic unbalanced voltage waveform due to the existence of even‐order harmonics. Aiming to improve the machine voltage THD, using notches on the rotor segments is proposed. To study the effects of the rotor notch on machine performance with low computational time, the non‐linear magnetic equivalent circuit is developed taking into account the effects of fringing fluxes, iron saturation, and rotor transition. An optimisation procedure based on Taguchi method is applied to minimise the voltage THD value taking the effects of uncontrollable factors into account. Finally, the REFSPM is prototyped and the measured results are compared with the analytical and numerical results.