Coupled Electromagnetic and Thermal Analysis of a 15kW Cryogenic Induction Motor for Submerged Liquefied Natural Gas Pumps

Ai, Chengliu; Huang, Yuanfeng; Wang, Haifeng

doi:10.23919/icems50442.2020.9290937

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…The deep groove type and double squirrel cage rotor make the rotor yoke smaller, resulting in an increase in the magnetic density of the rotor yoke. Therefore, this paper adopts the method of semi-deep groove, and appropriately increases the groove depth while taking into account the magnetic density of the rotor yoke 5 .…”

Section: Solutions To Improve the Starting Performance Of Induction M...mentioning

confidence: 99%

Research on improving starting torque of submersible lng pump asynchronous motor

Wu,

Wang,

2024

Second International Conference on Physics, Photonics, and Optical Engineering (ICPPOE 2023)

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Aiming at the problem that the asynchronous motor used in the submersible LNG pump has reduced locked torque and long starting time at low temperature, the causes of this problem are analyzed theoretically. A scheme of using brass instead of cast aluminum cage rotor winding and reducing the cross-sectional area of cast aluminum rotor winding is proposed, and the two schemes are compared. The corresponding simulation calculation was carried out using Ansys Maxwell, and the dynamic process of motor starting and the rotor winding loss during stable operation were obtained. Theoretical analysis and simulation results show that the improved scheme is simple, practical and effective.

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Section: Solutions To Improve the Starting Performance Of Induction M...mentioning

confidence: 99%

Research on improving starting torque of submersible lng pump asynchronous motor

Wu,

Wang,

2024

Second International Conference on Physics, Photonics, and Optical Engineering (ICPPOE 2023)

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Research on Electromagnetic Performance and Rotor Eddy Current Loss Suppression of Ultra‐Low Temperature and High‐Speed Permanent Magnet Motor Materials for LNG Pumps

Ge,

Yang,

Dong

et al. 2024

IEEJ Transactions Elec Engng

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There is no unified material selection principle for ultra‐low temperature and high‐speed permanent magnet motors used in liquefied natural gas (LNG) pumps, and high rotor eddy current losses can easily lead to vaporization of the transported LNG. This article first studies the electromagnetic performance of motor structural component materials at room temperature and ultra‐low temperature environments, and proposes the material selection principles for this type of motor. Based on the experimental measurement results of material electromagnetic performance, the loss characteristics of motors under ultra‐low temperature and room temperature environments were compared. Based on the mechanism of rotor eddy current loss and considering the influence of environmental temperature on the material properties of motors, three optimization methods for rotor eddy current loss are proposed. The impact of different suppression measures on rotor eddy current loss is revealed. The suppression of magnetic conduction harmonics can be achieved by opening stator auxiliary slots and optimizing their size and position. High conductivity metal shielding layers are used and their materials and sizes are optimized, And the use of magnetic slot wedges can simultaneously suppress three types of harmonics. Finally, the suppression principles of different optimization methods on rotor eddy current losses were analyzed, and the optimization effects and advantages and disadvantages of different methods were discussed, providing theoretical reference for the optimization design of high‐speed permanent magnet motors operating in ultra‐low temperature environments. © 2024 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.

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A Comparison of Cryogenic-Cooled and Superconducting Electrical Machines

Biasion

Fernandes

Branco

et al. 2021

2021 IEEE Energy Conversion Congress and Exposition (ECCE)

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Coupled Electromagnetic and Thermal Analysis of a 15kW Cryogenic Induction Motor for Submerged Liquefied Natural Gas Pumps

Cited by 3 publications

References 3 publications

Research on improving starting torque of submersible lng pump asynchronous motor

Research on improving starting torque of submersible lng pump asynchronous motor

Research on Electromagnetic Performance and Rotor Eddy Current Loss Suppression of Ultra‐Low Temperature and High‐Speed Permanent Magnet Motor Materials for LNG Pumps

A Comparison of Cryogenic-Cooled and Superconducting Electrical Machines

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