Thermal analysis of a Gramme‐ring‐winding high‐speed permanent‐magnet motor for pulsed alternator using CFD

Wan, Yi; Li, Qiang; Guo, Jian; Cui, Shumei

doi:10.1049/iet-epa.2020.0086

Cited by 10 publications

(8 citation statements)

References 23 publications

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“…It was found that as the air-cooled motor gap decreased, the flow velocity of the fluid on the stator and rotor surfaces increased for more effective heat dissipation. Wan et al [42] enlarged the internal slots of a stator core for ventilation ducts to improve stator convective heat evacuation efficiency. Husain et al [43] found that a single U-shaped arrangement of permanent magnets was more effective in cooling the rotor.…”

Section: Air Gap Convectionmentioning

confidence: 99%

Research Progress of Enhanced Thermal Evacuation and Cooling Technology for High-Speed Motors

Yan,

Qiang,

Zhao

et al. 2024

Applied Sciences

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In high-speed motors, there is a huge amount of heat generation from core and winding losses, which may result in thermal failures or motor performance deterioration. In the prevention of heat accumulation, efficient cooling technology is critical for smooth and reliable motor movement. This paper summarizes the diverse application of high-speed motor and thermal requirements, such as in electrical devices, turbo-machinery, and high-precision machine tools. Three paths of case convection—cooling, internal ventilation cooling and spindle core cooling—are analyzed. Methods for configuring thermal resistance and improving cooling efficiency are summarized. Among them, coolant flow characteristics and flow channel shapes, gas supply ventilation systems, and methods to reduce air resistance, as well as axial cooling and integrated heat pipe structures, are extensively investigated. Finally, the development prospects of high-speed motor cooling are also forecasted. At present, the primary research directions are to reduce the heat generated by the heat source, utilize the latent heat of the coolant, optimize the cooling flow path of the shell, design an axial air-cooling circulation system, and enhance the heat dissipation of the spindle.

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Section: Air Gap Convectionmentioning

confidence: 99%

Research Progress of Enhanced Thermal Evacuation and Cooling Technology for High-Speed Motors

Yan,

Qiang,

Zhao

et al. 2024

Applied Sciences

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“…where T is the servo motor torque (Nm), F is the external load force of the hydraulic cylinder (N), V is the radial piston pump displacement (m 3 /rad), and A is the effective area of the hydraulic cylinder (m 2 ). Equations (14) and (15) show that the load torque of the motor can be reduced by choosing hydraulic pump with small displacement, and the pressure of the system can be reduced by increasing the effective working area of the hydraulic cylinder or by using two cylinders in parallel connection. If the system is limited by space, forced wind cooling can be done to reduce the temperature of the PMSM.…”

Section: Thermal Balance Analysis Of the Ehspcsmentioning

confidence: 99%

“…References [13,14] presented an electromagnetic-thermal coupling analysis method of the PMSM, which was based on current harmonics and improved the (µ + 1) evolution strategy. In [15], the thermal issues of a high-speed permanent-magnet motor were studied based on CFD and numerical heat-transfer calculations, and the reasons for the overheat of the prototype in the experimental test were thoroughly analyzed. In [16], a PMSM comprehensive CFD model was presented, and the comparison between measured and simulated temperatures showed that the model sufficiently described the thermal behavior of the motor.…”

Section: Introductionmentioning

confidence: 99%

The Thermal Balance Temperature Field of the Electro-Hydraulic Servo Pump Control System

et al. 2021

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The electro-hydraulic servo pump control system (EHSPCS) is a high-performance control unit that integrates a permanent magnet synchronous motor (PMSM) and a closed hydraulic system (CHS). The design features of high integration and a high power-weight ratio lead to the poor heat dissipation capacity and high thermal balance temperature of the system. Excessive temperature will seriously affect the system’s performance and service life. Therefore, the thermal balance analysis method of the EHSPCS under different loads and different wind speeds was proposed in this paper. Firstly, the PMSM and CHS were taken as research objects to analyze the heating source of the system. The thermal power model was established, and the calculation was performed. The variation rule of the thermal power generated by each component with the load torque under the typical rotating speed was obtained. Secondly, the system’s temperature field thermal balance solution model was established. ANSYS and AMESim software were used to calculate the thermal balance points of the PMSM and CHS under different working conditions. The change rule of the thermal balance temperature field of the EHSPCS under different loads was analyzed with the conditions of the natural cooling and forced wind cooling of the PMSM. Finally, an experimental platform was built for experimental research, and the experimental temperature of the system under different loads and different wind speeds was measured. Through comparison and analysis with the simulation results, the correctness and feasibility of the thermal balance theoretical analysis method were verified. The research results will lay the foundation for thermal balance research on the EHSPCS, and have guiding significance for system design, component selection, and load matching.

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“…In order to increase the power density, the generator is designed with the higher electromagnetic load and smaller size [4][5][6]. However, it leads to the increase in generator loss density and the deviations in the stiffness of the generator structure, causing the machine vibration and high temperature problems [7][8][9]. It directly affects the performance and reliability of the generator.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Electromagnetic Characteristics in Air Region on High‐Speed Permanent Magnet Generator Based on Multi‐Physical Field

Cui

Zhu

et al. 2023

IEEJ Transactions Elec Engng

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The cooling performance of the machine with the closed liquid cooling system is excellent. However, the electromagnetic characteristics of the oil separator which sealing the cooling oil in the stator side can have a significant impact on the performance of the machine. In this paper, a liquid cooling structure with the magnetic oil separator is proposed. Taking the 20 000 rpm high‐speed permanent magnet generator as an example, the influence of the electromagnetic parameters of the magnetic oil separator on the generator output performance is studied by the analytical calculation and the finite element method, and the mechanism of the nonlinear variation of the generator output performance with the permeability of the oil separator is obtained. The influence of the oil separator on the air‐gap magnetic field and electromagnetic force is analyzed, and the reduction mechanism of the different permeability of the oil separator on the harmonic magnetic field and radial force is revealed. The vibration acceleration response of the generator stator is obtained through the modal and harmonic response analysis, it is confirmed that the magnetic oil separator has the effect of reducing vibration. In addition, the 3‐D temperature field calculation model of the generator is established, the influence of the thermal parameters of the oil separator on the internal heat exchange of the generator is studied, and the temperature distribution is obtained. Finally, experiments on the electromagnetic performance and temperature rise of the prototype are carried out to verify the correctness of the theoretical analysis. © 2023 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

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Thermal analysis of a Gramme‐ring‐winding high‐speed permanent‐magnet motor for pulsed alternator using CFD

Cited by 10 publications

References 23 publications

Research Progress of Enhanced Thermal Evacuation and Cooling Technology for High-Speed Motors

Research Progress of Enhanced Thermal Evacuation and Cooling Technology for High-Speed Motors

The Thermal Balance Temperature Field of the Electro-Hydraulic Servo Pump Control System

Influence of the Electromagnetic Characteristics in Air Region on High‐Speed Permanent Magnet Generator Based on Multi‐Physical Field

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