Analytical modeling of surface-mounted and consequent-pole linear vernier hybrid machines
Date
2021
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Electrical and Electronics Engineers
Abstract
ENGLISH ABSTRACT: This paper presents an analytical method for modeling the no-load air gap ux density of a
surface-mounted and a consequent-pole linear Vernier hybrid machine (LVHM). The approach is based on
simple magneto-motive force (MMF) and permeance functions to account for the doubly-slotted air gap
of the LVHM. These models are used to determine the ux linkage, induced electromotive force (EMF)
and average thrust force of each machine. The accuracy of the two analytical models is validated by
comparison with 2D nite element method (FEM) solutions. Based on the analytical models, it is found
that the working harmonics of both surface-mounted and consequent-pole LVHMs are essentially the same.
However, the magnitudes of these working harmonics in the consequent-pole LVHM are invariably greater
than those of surface-mounted LVHM. Further, using the analytical model, the contribution to the thrust force
of the machine by each individual working harmonic can be shown clearly, and is used to explain why the
consequent-pole LVHM has improved performance despite using only 50% of the permanent magnet (PM)
material compared to the surface-mounted LVHM.
Description
CITATION: Botha, C. D., et al. 2021. Analytical modeling of surface-mounted and consequent-pole linear vernier hybrid machines. IEEE Access, 9:26251-26259, doi:10.1109/ACCESS.2021.3057716.
The original publication is available at https://ieeexplore.ieee.org
The original publication is available at https://ieeexplore.ieee.org
Keywords
Air gap permeance, Hybrid power systems, Linear Vernier hybrid machine, Verniers
Citation
Botha, C. D., et al. 2021. Analytical modeling of surface-mounted and consequent-pole linear vernier hybrid machines. IEEE Access, 9:26251-26259, doi:10.1109/ACCESS.2021.3057716