Numerical analysis of the external wind path for medium-size high-voltage asynchronous motors

Wen, Jinyu; Zheng, Junqiang

doi:10.1016/j.applthermaleng.2015.07.065

Cited by 21 publications

(10 citation statements)

References 7 publications

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“…The temperatures of the stator and rotor were both decreased by up to 6 ℃ by increasing the flow rate and uniformity of air, updating the structure along the air flow path. Wen et al [130] introduced an air guide plate and modified the shield in the air path to eliminate the vortex energy loss, as shown in Fig.…”

Section: Air Coolingmentioning

confidence: 99%

A critical review on thermal management technologies for motors in electric cars

Wang

Bai

Gerada

et al. 2022

Applied Thermal Engineering

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Section: Air Coolingmentioning

confidence: 99%

A critical review on thermal management technologies for motors in electric cars

Wang

Bai

Gerada

et al. 2022

Applied Thermal Engineering

View full text Add to dashboard Cite

“…RNG k-ε turbulence model is applied, because the fluid inside the axial ventilation system has a large Reynolds number, and the rotor and bracket can be rotating. This turbulence model is based on Reynolds averaging method, and is defined as in [16], [17]…”

Section: B Basic Assumption and Coupling Model Solutionmentioning

confidence: 99%

Analyzing Temperature Rise and Fluid Flow of High-Power-Density and High-Voltage Induction Motor in the Starting Process

Xia

Han

et al. 2019

IEEE Access

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Transient characteristics in the starting process play an important role in the design and operation of high-power-density and high-voltage induction motor. A field-circuit coupling model is proposed to analyze the transient fluid flow and temperature rise of a YJKK 500-4 2500 kW HPDHV induction motor in the starting process. The wind resistance network model is built to investigate the transient fluid flow and is used to obtain the heat dissipation boundary condition of the transient temperature calculation. The transient electric current is the key to the heat source of the temperature distribution and is calculated by the dynamic mathematical model. According to the obtained heat dissipation boundary condition and heat source, the 3-D fluid-solid coupling model is solved to obtain the transient temperature distribution. Moreover, the highest temperature rise in the starting process is greatly affected by the load. The simulation results show that the smaller fluid flow and the starting current make the winding temperature rise rapidly before the rotating speed of the motor reaches the rated value. When the load is much heavier, the starting time becomes longer and the winding temperature in the starting process will rise rapidly. The experimental results indicate that the proposed model is validated. INDEX TERMS Induction motor, temperature rise, fluid flow, starting characteristic.

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“…According to the theory of fluid mechanics, the standard k −ε equation model is used to describe the fluid. When the fluid is incompressible and stable, the general governing equation is adopted [19].…”

Section: B Mathematical Modelsmentioning

confidence: 99%

Research on Thermal Characteristics of Internal Ventilated Paths in Compact Medium High- Voltage Motor Based Fluid Network Decoupling

Yang

et al. 2019

IEEE Access

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Aiming at the problem that it is difficult to model and analyze the thermal effect of large motors as a whole, a method based on fluid network decoupling is proposed to solve the global thermal effect of large motors. Taking YJKK500-4 2500-kW compact medium-sized high-voltage motor as an example, combined with the internal structure and the actual size of the motor, and using the flow-heat coordination mechanism and the fluid network, the whole internal ventilated paths of motor are divided into four equal pressure regions: end, stator-rotor, end, and internal fan according to the magnitude of pressure. The reasonable basic assumptions and boundary conditions are selected to link each region, which can avoid the problem that the inlet boundary condition is difficult to give. After that, the internally ventilated paths are modeled and analyzed, and the fluid flow and temperature in each region of the internally ventilated paths are obtained. Combined with the experimental data, the calculation results are all within the error. The rationality and correctness of the method used in the paper are confirmed, which solves the problem that the ordinary computer cannot calculate the huge model of large motor and provides a basis for the calculation of similar motor in the future. INDEX TERMS YJKK compact medium high-voltage motor (YJKK), fluid network decoupling, internal ventilated paths, fluid characteristics, thermal effect.

show abstract

Numerical analysis of the external wind path for medium-size high-voltage asynchronous motors

Cited by 21 publications

References 7 publications

A critical review on thermal management technologies for motors in electric cars

A critical review on thermal management technologies for motors in electric cars

Analyzing Temperature Rise and Fluid Flow of High-Power-Density and High-Voltage Induction Motor in the Starting Process

Research on Thermal Characteristics of Internal Ventilated Paths in Compact Medium High- Voltage Motor Based Fluid Network Decoupling

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