3D loss and heat analysis at the end region of 4-poles 1150 MW nuclear power turbine generator

2014 ◽  
Vol 63 (1) ◽  
pp. 47-61 ◽  
Author(s):  
Guang-Hou Zhou ◽  
Li Han ◽  
Zhen-Nan Fan ◽  
Yong Liao ◽  
Song Huang
Keyword(s):  
Electromagnetic Field ◽  
Nuclear Power ◽  
Heat Dissipation ◽  
Calculation Model ◽  
Turbine Generator ◽  
Transient Electromagnetic ◽  
Power Turbine ◽  
Calculation Results ◽  
Operation Stability ◽  
Steady Temperature Field

Abstract To study the principle of loss and heat at the end region of large 4-poles nuclear power turbine generator, 3D transient electromagnetic field and 3D steady temperature field finite element (FE) models of the end region are established respectively. Considering the factors such as rotor motion, core non-linearity and time-varying of electromagnetic field, the anisotropic heat conductivity and different heat dissipation conditions of stator end region, a 50 Hz, 1150 MW, 4-poles nuclear power turbine generator is investigated. The loss and heat at the generator end region are calculated respectively at no-load and rated-load, and the calculation results are compared with the test data. The result shows that the calculation model is accurate and the generator design is suitable. The method is valuable for the research of loss and heat at the end region of large 4-poles nuclear power turbine generator and the improvement of the generator’s operation stability. The method has been applied successfully for the design of the larger nuclear power turbine generators

3D Magnetic Field and Loss Analysis at the No Load Condition in the End Region of 4-Poles Large Turbine Generator

2013 ◽  
Vol 427-429 ◽  
pp. 308-311
Author(s):  
Guang Hou Zhou ◽  
Li Han ◽  
Zhen Nan Fan
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Field ◽  
Heat Dissipation ◽  
Load Condition ◽  
Calculation Model ◽  
Turbine Generator ◽  
Loss Analysis ◽  
Transient Electromagnetic ◽  
Calculation Results ◽  
The Magnetic Field

To study the principle of magnetic field and loss at the end region of large 4-poles large turbine generator, 3D transient electromagnetic field finite element (FE) models of the end region are established respectively. Considering the factors such as rotor motion, core non-linearity and time-varying of electromagnetic field, the anisotropic heat conductivity and different heat dissipation conditions of stator end region, a 50Hz, 1150MW, 4-poles large turbine generator is investigated. The magnetic field and loss at no-load condition of the generator end region are calculated and the calculation results are compared with the test data. The result shows that the calculation model is accurate.

Temperature Calculation on Phase Lead Connecting Structures of 1100MW Generator Stator Parallel Rings

2011 ◽  
Vol 383-390 ◽  
pp. 3040-3045
Author(s):  
Yan Fei Wei ◽  
Le Qi ◽  
Ting Shan Wang ◽  
Jian Ping Wang ◽  
Zhe Long Xian ◽  
...  
Keyword(s):  
Nuclear Power ◽  
Operation Performance ◽  
Turbine Generator ◽  
Field Coupling ◽  
Temperature Calculation ◽  
Phase Lead ◽  
Power Turbine ◽  
Calculation Results ◽  
Calculation Software ◽  
Generator Stator

The temperature rise of generator components has a great impact on operation performance for large turbine generator. In this paper, applying the general FE calculation software-ANSYS, with a sequential electromagnetic-thermal field coupling calculation method, temperature calculation on phase lead connecting structures of 1100MW nuclear power turbine generator parallel rings is presented. The calculation results could offer a basic analysis to optimize the design of the generator.

Temperature Calculation on Phase Lead Connecting Structures of 1100MW Generator Stator Parallel Rings

2012 ◽  
Vol 433-440 ◽  
pp. 7131-7137
Author(s):  
Yan Fei Wei ◽  
Le Qi ◽  
Ting Shan Wang ◽  
Jian Ping Wang ◽  
Zhe Long Xian ◽  
...  
Keyword(s):  
Nuclear Power ◽  
Operation Performance ◽  
Turbine Generator ◽  
Field Coupling ◽  
Temperature Calculation ◽  
Phase Lead ◽  
Power Turbine ◽  
Calculation Results ◽  
Calculation Software ◽  
Generator Stator

The temperature rise of generator components has a great impact on operation performance for large turbine generator. In this paper, applying the general FE calculation software-ANSYS, with a sequential electromagnetic-thermal field coupling calculation method, temperature calculation on phase lead connecting structures of 1100MW nuclear power turbine generator parallel rings is presented. The calculation results could offer a basic analysis to optimize the design of the generator.

Research on the Vibration Characteristic of Composite Rotor for Halfspeed Nuclear Power Turbine-Generator

2017 ◽  
Author(s):  
Xiu-jin Wang
Keyword(s):  
Natural Frequency ◽  
Nuclear Power ◽  
Geometric Model ◽  
Element Model ◽  
Vibration Characteristics ◽  
Turbine Generator ◽  
Element Analysis ◽  
Large Capacity ◽  
Critical Speeds ◽  
Power Turbine

Shafting is one of the key units of large steam turbine generator set, its dynamic characteristics directly affect the technical level and operation effect of the new type large capacity Turbine-generator unit. The forces acting on the disc and the shaft are complex in operation. A composite rotor has various dynamic characters for a large capacity nuclear power Turbine-generator comparing with general rotor for its different structure. Numerical simulation was carried out to a composite rotor for a large capacity nuclear power T-G set, so as to analyze the influence of different length to diameter ratio on the vibration characteristics of the low pressure rotor and to study the effect of Interference Amount Between disc and shaft by using the three-dimensional finite element analysis in order to meet the requirements of the good vibration characteristics of the rotor. Firstly, the geometric model of the rotor is set up, and then the element model of the shafting is built, finally natural frequency of the rotor is calculated by using the mechanical module. Vibration characters such as the natural frequency and corresponding mode were obtained by analysis of vibration for the disc and shaft. The effect of the interference fit on critical speeds of the rotors are analyzed preliminarily. The results show that critical speeds of T-G rotor vary sensitively with magnitude of interference. (CSPE).

Study on Effect of Transient Electromagnetic Field on Growth of Radish

2019 ◽  
Vol 139 (10) ◽  
pp. 461-462
Author(s):  
Yuki Haji ◽  
Yoshihisa Otsuki ◽  
Masao Masugi
Keyword(s):  
Electromagnetic Field ◽  
Transient Electromagnetic

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

2021 ◽  
Vol 11 (11) ◽  
pp. 4856
Author(s):  
Hae-Sol Lee ◽  
Myeong-Hwan Hwang ◽  
Hyun-Rok Cha
Keyword(s):  
Electromagnetic Field ◽  
Unmanned Aerial Vehicles ◽  
Permanent Magnet ◽  
High Power ◽  
Heat Dissipation ◽  
Power Source ◽  
Flight Duration ◽  
Aerial Vehicles ◽  
Drive Motor ◽  
Interior Permanent Magnet

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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