Thermal management integrated with three-dimensional heat pipes for air-cooled permanent magnet synchronous motor

Fang, Guoyun; Yuan, Wei; Yan, Zhiguo; Sun, Yalong; Tang, Yong

doi:10.1016/j.applthermaleng.2019.02.120

Cited by 70 publications

(37 citation statements)

References 25 publications

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“…As a result of a large amount of heat exchange during the phase change process of the working medium, the equivalent heat conductivity of the heat pipe can reach hundreds of times more than that of copper, which is the metal with the best thermal properties. To improve the efficiency of the CFD simulation, the heat pipe is equivalent to a metal bar with constant high-thermal-conductivity [19]. However, the main working principle of the heat pipe is the endothermic phase change of the internal working medium.…”

Section: Test Experiments For Thermal Property Of the Heat Pipementioning

confidence: 99%

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A Novel Stator Cooling Structure for Yokeless and Segmented Armature Axial Flux Machine with Heat Pipe

Lin

et al. 2021

Energies

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The yokeless and segmented armature axial flux machine is considered an excellent topology for electric vehicles application. However, its performance is severely limited by the stator cooling system. The heat pipe, as the small size, lightweight, but highly efficient passive phase-change cooling element, has been attracting more and more attention in the thermal management methods of electric motors. Therefore, the relationship between the thermal performance of the heat pipe with temperature is measured in detail through an experimental test platform in this paper. Further, a novel stator cooling structure that combines the heat pipe with the housing water-cooling method is introduced to improve the temperature distribution of the stator. Computational fluid dynamics (CFD) simulation verifies that the proposed cooling structure can accelerate the release of heat from the stator and reduce the temperature of the stator significantly.

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Section: Test Experiments For Thermal Property Of the Heat Pipementioning

confidence: 99%

“…The experiments show that the heat pipes increase the performance of the cooling system by 25%. Two heat-pipe-based thermal structures, straightly embedded module (SEME) and three-dimensional rounding module (RM) are studied in [19]. The simulation and experiment of these two structures are based on an air-cooled motor.…”

Section: Introductionmentioning

confidence: 99%

A Novel Stator Cooling Structure for Yokeless and Segmented Armature Axial Flux Machine with Heat Pipe

Lin

et al. 2021

Energies

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“…Meanwhile, cooling methods for effectively discharging or distributing the generated heat can be classified into three types according to the fluid used. Typical cooling methods include an air-cooled type that cools the motor housing or the inside of the motor through forced convection by using air [7], a water-cooled type that cools by flowing coolant to the motor housing or internal parts [8], and oil cooling by directly spraying oil to the heat source inside the motor, considering oil insulation and cooling characteristics [9].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Field Analysis and Design of a Hermetic Interior Permanent Magnet Synchronous Motor with Helical-Grooved Self-Cooling Case for Unmanned Aerial Vehicles

2021

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As unmanned aerial vehicles expand their utilization and coverage, research is in progress to develop low-weight and high-performance motors to efficiently carry out various missions. An electromagnetic field interior permanent magnet (IPM) motor was designed and analyzed in this study that improved the flight performance and flight duration of an unmanned aerial vehicle (UAV). The output power and efficiency of a conventional commercial UAV motor were improved by designing an IPM motor of the same size, providing high power output and high-speed operation by securing high power density, wide speed range, and mechanical stiffness. The cooling performance and efficiency of the drive motor were improved without requiring a separate power source for cooling by introducing the helical-grooved self-cooling case, which has a low heat generation structure. Furthermore, the motor is oil-cooled through rotating power without a separate power source, reducing the weight of the UAV. The heat dissipation characteristics were verified by fabricating a prototype and taking actual measurements to verify the validity of the heat dissipation characteristics. The results of this study are expected to improve the flight duration and performance of UAVs and contribute to the efficiency of the design of a UAV drive motor.

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“…The second approach consists of improving the energy management of the propulsion cooling system. Most of the works regarding the thermal management in electric vehicles are focused on either improving the battery cooling [15][16][17] or the e-motor cooling [18,19], without taking into account the cooling system energy consumption. Conventional control strategies are based on a feedback control on the radiator inlet temperature, with a thermostat valve.…”

Section: Introductionmentioning

confidence: 99%

Cooling System Energy Consumption Reduction through a Novel All-Electric Powertrain Traction Module and Control Optimization

et al. 2020

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In this work, the problem of reducing the energy consumption of the cooling circuit for the propulsion system of an all-electric vehicle is approached with two different concepts: improvement of the powertrain efficiency and optimization of the control strategy. Improvement of the powertrain efficiency is obtained through a modular design, which consists of replacing the electric powertrain with several smaller traction modules whose powers sum up to the total power of the original powertrain. In this paper, it is shown how modularity, among other benefits, also allows reducing the energy consumption of the cooling system up to 54%. The energy consumption of the cooling system is associated with two components: the pump and the fan. They produce a so-called auxiliary load on the battery, reducing the maximum range of the vehicle. In conventional cooling systems, the pump and the fan are controlled with a thermostat, without taking into account the energy consumption. Conversely, in this work a control strategy to reduce the auxiliary loads is developed and compared with the conventional approach, showing that the energy consumption of the cooling system can be reduced up to 27%. To test the control strategy, numerical simulations have been carried out with a 1-D model of the cooling system. On the other hand, all the thermal loads of the components have been calculated with a vehicle simulator, which is able to predict the vehicle’s behavior under different driving cycles.

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Thermal management integrated with three-dimensional heat pipes for air-cooled permanent magnet synchronous motor

Cited by 70 publications

References 25 publications

A Novel Stator Cooling Structure for Yokeless and Segmented Armature Axial Flux Machine with Heat Pipe

A Novel Stator Cooling Structure for Yokeless and Segmented Armature Axial Flux Machine with Heat Pipe

Electromagnetic Field Analysis and Design of a Hermetic Interior Permanent Magnet Synchronous Motor with Helical-Grooved Self-Cooling Case for Unmanned Aerial Vehicles

Cooling System Energy Consumption Reduction through a Novel All-Electric Powertrain Traction Module and Control Optimization

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