Gas Friction Loss in Stator Ventilation Ducts of the Drive Motor for the Cooling Medium in a High-Temperature Gas-Cooled Reactor

Ge, Baojun; Xu, Xiaodong; Tao, Dajun; Han, Je-Chin; Wang, Likun

doi:10.1109/tie.2018.2829670

Cited by 9 publications

(5 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…If U and ϕ meet the precision requirements, the iterative computation stops, obtaining I f and ϕ. If U and ϕ do not meet accuracy requirements, adjust the I f and λ by I f ' = k 1 I f and λ' = λ + k 2 (ϕ − ϕ N ) and replace the original value with the corrected value in the electromagnetic model to re-calculate U and ϕ. Repeat the above steps until U and ϕ meet the accuracy requirements of Equation (5).…”

Section: 11 X For Peer Review 5 Of 21mentioning

confidence: 99%

See 1 more Smart Citation

Coupled Electromagnetic–Fluid–Thermal Analysis of a Fully Air-Cooled Pumped Storage Generator Motor

Zhang,

Wang,

Wang

et al. 2023

Machines

View full text Add to dashboard Cite

With the continuous increase in the capacity of the pumped storage generator motor, the overheating of the rotor area is becoming increasingly severe, which has a significant effect on the safe and reliable operation of the machine. The heat dissipation of the machine rotor by fully air-cooled is one of the key technologies to develop the new generation of pumped storage generator motors. In this paper, the electromagnetic field and fluid–thermal coupled field of a pumped storage generator motor are analyzed. The 2D transient time-step finite element model of the electromagnetic field of a pumped storage generator motor is established, and the eddy current loss of damping bars of the rotor is calculated by the finite element method. The additional loss of the rotor pole surface is calculated by analytical method. The mathematical and geometric models of the 3D fluid–thermal coupled field of the pumped storage generator motor are established and calculated. The complex fluid velocity distribution and the temperature distribution at different positions of the rotor under fully air-cooled fanless cooling conditions are investigated in detail. The calculated temperature of field winding is compared with the measured value, and the result shows that the calculated result coincident well with the test data. This research provides the technical reference for the development and temperature rise calculation for large pumped storage generator motors.

show abstract

Section: 11 X For Peer Review 5 Of 21mentioning

confidence: 99%

“…In recent years, some researchers have studied the cooling mechanism and temperature distribution of the large salient-pole synchronous alternator [4][5][6][7][8][9][10][11][12][13]. Bersch et al developed a novel thermal and electromagnetic coupled model to obtain optimal ventilation design.…”

Section: Introductionmentioning

confidence: 99%

Coupled Electromagnetic–Fluid–Thermal Analysis of a Fully Air-Cooled Pumped Storage Generator Motor

Zhang,

Wang,

Wang

et al. 2023

Machines

View full text Add to dashboard Cite

show abstract

“…The fluid inside the rotor field spider flows into the radial ventilation ducts under the centrifugal force, and then flows out from the stator back outlet. The inlet flow rate is obtained by solving the wind-resistance network model of motor [12], [13]. Under the rated speed, the axial fluid flow inside the rotor is calculated and is 0.922 m 3 /s.…”

Section: Entrance Fluid Flowmentioning

confidence: 99%

“…The starting characteristics, such as the starting current and the rotating speed, can be obtained by the dynamic mathematical model of the induction motor. The dynamic mathematical model is described as follows [13], [14].…”

Section: Transient Heat Sourcementioning

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

View full text Add to dashboard Cite

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.

show abstract

“…Liu et al calculated the thermal interaction boundary conditions of the motor by using Fourier's heat conduction law and Newton's law of heat release [7,8]. Ge et al [9] proposed a method to calculate gas friction loss based on the Bernoulli equation and obtained the temperature distribution law of the motor considering fluid velocity, temperature, and gas friction loss. Zhang et al from Nanjing University of Aeronautics and Astronautics used the finite element method to conduct thermal analysis on a double-salient pole brushless dc generator and proposed a thermal modeling method for flat wire [10,11].…”

Section: Introductionmentioning

confidence: 99%

Study on Steady-State Temperature Rise Characteristics of Motor Heat Balance under Load Rate

Zhou

Wang

Bai

et al. 2022

International Transactions on Electrical Energy Systems

View full text Add to dashboard Cite

The influence of load rate and other factors is not considered in the temperature rise monitoring process of traditional motor, which will lead to the wrong diagnosis of motor health status. In this paper, the characteristics of motor temperature rise under different ambient temperatures and different load factors are studied. Taking an 11 kW three-phase asynchronous motor as an example, the temperature rise model of the motor is based on the finite element method established using ANSYS software. The thermal conductivity coefficient and surface heat dissipation coefficient of each part of the motor are determined. According to the electromagnetic field calculation, the motor loss distribution is obtained, and the temperature rise distribution curve of the motor is obtained by the simulation of the three-dimensional steady temperature field of the motor. In this paper, the temperature rise variation law of the motor considering the influence of environmental temperature and load factors is proposed, and combined with the temperature rise threshold curve of the motor under different load rates, a dynamic threshold judgment system is established to accurately warn the motor of overheating under any load rate. When the motor’s health status changes after running for a long time, it provides an important theoretical basis for accurate diagnosis of the motor’s health status.

show abstract

Gas Friction Loss in Stator Ventilation Ducts of the Drive Motor for the Cooling Medium in a High-Temperature Gas-Cooled Reactor

Cited by 9 publications

References 26 publications

Coupled Electromagnetic–Fluid–Thermal Analysis of a Fully Air-Cooled Pumped Storage Generator Motor

Coupled Electromagnetic–Fluid–Thermal Analysis of a Fully Air-Cooled Pumped Storage Generator Motor

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

Study on Steady-State Temperature Rise Characteristics of Motor Heat Balance under Load Rate

Contact Info

Product

Resources

About