Page 228 - 2024-Vol20-Issue2
P. 228
224 | Salman & Mohammed & Mohammed
Fig. 7. The braking efficiency with rotational speed for Fig. 9. Mesh process of the PMECB system
several types of PM materials
Iron Boron and Samarium Cobalt generate stronger magnetic
fields, causing larger eddy currents and increased power dissi-
pation, compared to weaker materials like Ferrite magnets.
ACKNOWLEDGMENTS
I would like to express my deep gratitude to Dr. Jamal A.-
K. Mohammed and Dr. Farag M. Mohammed, the research
supervisors, for their guidance, enthusiastic encouragement,
and constructive criticism of this research work.
CONFLICT OF INTEREST
Fig. 8. The distribution of magnetic flux in the rotating disc The authors have no conflict of relevant interest to this article.
REFERENCES
with permanent magnets to offer a unique, innovative, and [1] A. Q. Abdulkareem, A. T. Humod, and O. A. Ahmed,
dependable solution for a variety of industrial applications. “Fault detection and fault tolerant control for anti-lock
The current study reached some conclusions, which are as braking systems) abs) speed sensors by using neural
follows: networks,” Engineering and Technology Journal, vol. 41,
With their high electrical conductivity, Neodymium Iron no. 2, pp. 333–344, 2023.
Boron magnets exhibit higher eddy current interactions and [2] H. N. Faisal, F. M. Mohammed, and J. A. Mohammed,
greater braking forces, setting them apart from other perma- “Design and implementation of an electromechanical
nent magnet kinds. brake system,” Engineering and Technology Journal,
vol. 40, no. 1, pp. 31–39, 2022.
Neodymium Iron Boron magnets create stronger braking
forces, Samarium Cobalt balances high fields and thermal
stability, and Ferrite magnets offer lower braking forces but [3] F. M. Mohammed, J. A.-K. Mohammed, and H. Faisl,
are cost-effective. “Modeling and simulation of an electromechanical brake
system,” in IOP Conference Series: Materials Science
From investigation, the braking efficiency decreases with and Engineering, vol. 1105, p. 012051, IOP Publishing,
increasing rotational speed, particularly in higher electrical 2021.
resistivity materials like Samarium Cobalt. This leads to
severe eddy current losses, resulting in heat loss and decreased
efficiency. [4] J. Liu, W. Li, L. Jin, G. Lin, Y. Sun, and Z. Zhang, “Anal-
From another side, higher magnetic materials like Neodymium ysis of linear eddy current brakes for maglev train using
