The influence analysis of thrust and gap magnetic field of a down-to-hole tubular permanent magnet linear hammer due to high temperature in deep hole

Wu, Tao; Fu, Kaiyuan; Zhu, Jun; Lei, Gang

doi:10.1109/icems.2017.8056381

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…The prototype test showed that the linear motor hammer can reach and even exceed the hydraulic hammer of the same diameter, especially in the low-frequency range. Wu et al [54], using the developed model, estimated the loss of permanent magnet, coil resistance variation, and coil thermal expansion within the temperature range from 20 • C to 300 • C. The obtained results of model simulations showed the by less than 31% trust reduced by copper loss; the thrust reduced by 18% by the permanent magnet loss. On the other hand, the effect of the air-gap change by thermal expansion can be practically neglected.…”

Section: Deep Drilling In Oil and Gasmentioning

confidence: 99%

Review of Linear Electric Motor Hammers—An Energy-Saving and Eco-Friendly Solution in Industry

et al. 2023

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Standard hydraulic breaking hammers are widely used for crushing oversized blasted materials and concrete structures demolition in industry. These hammers, installed in on-surface working excavators or stationary manipulators at the dumping points of underground conveyors, provide the required limited sizes of bulk materials and enable the safe operation of other equipment (screens, crushers). In parallel, hydraulic hammers have an alternative—fully electric hammers. This paper aims to review existing linear electric motor (LEM) hammers as an energy-saving and eco-friendly solution in industry. Global market analysis is presented with potential branches of LEM hammers. Several aspects for implementation—design optimization, dynamics simulation, machine control, and performance estimation—are considered. Different case studies for LEM-hammer application are given. The preliminary measurements are demonstrated on the electric hammer of Lekatech Company, which is intended for the mining industry and construction demolition. Experiments showed that depending on the impact frequency, type of rock, and shape of the crushing tool, the time to fracture varies significantly. Optimal parameters exist for every case, for which adjusting requires online hammer control.

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Section: Deep Drilling In Oil and Gasmentioning

confidence: 99%

Review of Linear Electric Motor Hammers—An Energy-Saving and Eco-Friendly Solution in Industry

et al. 2023

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“…Currently, significant progress has been made in the study of temperature fields with the thermal network method and numerical analysis being the two main approaches for analyzing these fields [2][3]. The thermal circuit method has several advantages including simple modeling, smaller calculation size and quick calculation of motor temperature during the optimization of motor parameters.…”

Section: Introductionmentioning

confidence: 99%

A long secondary linear traction motor analysis based on electromagnetic-thermal-fluid coupling

Shi,

Wen,

Wang

et al. 2024

J. Phys.: Conf. Ser.

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The temperature analysis of the motor is critical for its functioning and durability as it has a significant impact on enhancing its efficiency. The purpose of this paper is to design a rational water cooling system for the Double-sided Linear Flux Switching Permanent Magnet motor (DLFSPM), thereby reducing the adverse effects of temperature rise. This paper conducts electromagnetic fluid and thermal analyses of DLFSPM. It also designs a rational cooling structure to reduce the temperature rise while running thereby contributing to its operation reliability. The electromagnetic-thermal-fluid coupling model provides a feasible solution for reducing the temperature increase of the DLFSPM motor under rated operating conditions, thereby enhancing its overall performance.

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Temperature Field Analysis of Primary Permanent Magnet Linear Motor with Magnetic Barrier Coupling

Wang

2021

2021 13th International Symposium on Linear Drives for Industry Applications (LDIA)

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The influence analysis of thrust and gap magnetic field of a down-to-hole tubular permanent magnet linear hammer due to high temperature in deep hole

Cited by 4 publications

References 7 publications

Review of Linear Electric Motor Hammers—An Energy-Saving and Eco-Friendly Solution in Industry

Review of Linear Electric Motor Hammers—An Energy-Saving and Eco-Friendly Solution in Industry

A long secondary linear traction motor analysis based on electromagnetic-thermal-fluid coupling

Temperature Field Analysis of Primary Permanent Magnet Linear Motor with Magnetic Barrier Coupling

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