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Linear Permanent Magnet Eddy Current Brake for Overwinding Protection
- Source :
- IEEE Access, Vol 7, Pp 33922-33931 (2019)
- Publication Year :
- 2019
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2019.
-
Abstract
- Overwinding protection devices are used to brake hoisting containers before these containers reach a limited height, thereby preventing the hoisting containers from impacting the hoisting system. However, in ultra-deep shafts (depth > 1000 m), traditional overwinding protection methods fail to protect the hoisting system, because this type of hoisting system has a greater mass, kinetic energy, and inertia than the traditional hoisting system, and also the environment of ultra-deep shafts is more complex. This paper presents a novel overwinding protection method that applies a linear permanent magnet eddy current brake (LPMECB) to the hoisting system in ultra-deep shafts. This paper also finds the optimum setting parameter of permanent magnets (PMs). First, an analytical model of the LPMECB is built, and the time-domain signals of the braking force are processed via fast Fourier transform, confirming the mechanism of the optimum setting parameter. Subsequently, the simulations are conducted by establishing a finite-element model of the LPMECB; the simulations prove the existence of the optimum setting parameter of PMs and demonstrate the influence of the air gap, velocity, and conductivity on this parameter. Finally, the experimental studies are carried out on a test bench of the LPMECB to validate the analytical model and the simulation results. The results show the existence of the optimum setting parameter of PMs and prove that the air gap has an effect on this parameter.
- Subjects :
- Eddy current brake
Test bench
General Computer Science
Computer science
media_common.quotation_subject
Fast Fourier transform
02 engineering and technology
Inertia
01 natural sciences
law.invention
Control theory
law
0103 physical sciences
Brake
0202 electrical engineering, electronic engineering, information engineering
Eddy current
General Materials Science
media_common
010302 applied physics
020208 electrical & electronic engineering
General Engineering
overwinding protection
linear permanent magnet
Magnet
lcsh:Electrical engineering. Electronics. Nuclear engineering
Air gap (plumbing)
lcsh:TK1-9971
Subjects
Details
- ISSN :
- 21693536
- Volume :
- 7
- Database :
- OpenAIRE
- Journal :
- IEEE Access
- Accession number :
- edsair.doi.dedup.....98faab9a1c1a9be85d3404d74e5db837
- Full Text :
- https://doi.org/10.1109/access.2019.2902892