Calculation of Thermal Performance in Amorphous Core Dry-Type Transformers

2014 ◽  
Vol 986-987 ◽  
pp. 1771-1774 ◽  
Author(s):  
Yan Li ◽  
Yin Jun Guan ◽  
Yang Li ◽  
Tian Yuan Li
Keyword(s):  
Finite Element ◽  
Temperature Distribution ◽  
Energy Saving ◽  
Thermal Performance ◽  
Temperature Rise ◽  
Structure Design ◽  
Iron Core ◽  
Distribution Characteristics ◽  
Element Calculation ◽  
New Energy

The amorphous core dry-type transformer is a new energy-saving transformer. In this paper, a SCBH15-600/10 type amorphous core dry-type transformer is analyzed by 3-D finite element calculation of iron core and winding thermal. Analyzing the temperature distribution characteristics of amorphous transformer, assure the temperature rise highest point. It is in the permitted error between the simulation value and test value. It has important engineering value for the calculation of similar transformer temperature rise; and has certain guiding significance on the amorphous transformer structure design.

Coupled Thermal-Structural Analysis of Generator For sCO2 Turbomachinery

2021 ◽  
Author(s):  
Ramesha Guntanur ◽  
Ashutosh Patel ◽  
Vijay Biradar ◽  
Pramod Kumar
Keyword(s):  
Thermal Analysis ◽  
Finite Element ◽  
Temperature Distribution ◽  
Structural Analysis ◽  
Contact Pressure ◽  
Temperature Rise ◽  
Thermal Stresses ◽  
Flow Path ◽  
Heat Losses ◽  
Positive Contact

Abstract This paper presents the coupled thermal and structural analysis of the rotating components of the generator using ABAQUS finite element solver. The interference between shaft and rotor is optimized to have a positive contact pressure and also minimize the stresses in the laminate at all operating speeds. Thermal analysis is performed to simulate the temperature distribution arising from the heat losses of generator. The flow path of the coolant is designed through the shaft to minimise the temperature rise of the generator. The resulting changes in the contact pressure between laminated disc and shaft is computed using sequentially coupled thermal and structural analysis. The thermal stresses of rotor are computed estimated and the design is optimized for transmitting torque at different operating speeds.

scholarly journals Thermal performance analysis and optimization design of dry type air core reactor with the double rain cover

2021 ◽  
pp. 67-67
Author(s):  
FaTing Yuan ◽  
Shouwei Yang ◽  
Shihong Qin ◽  
Kai Lv ◽  
Bo Tang ◽  
...  
Keyword(s):  
Finite Element ◽  
Temperature Distribution ◽  
Temperature Rise ◽  
Optimization Design ◽  
Orthogonal Experiment ◽  
Structural Parameters ◽  
Fluid Velocity ◽  
Optimization Method ◽  
Design Parameters ◽  
Air Core

In this paper, a fluid-thermal coupled finite element model is established according to the design parameters of dry type air core reactor. The detailed temperature distribution can be achieved, the maximum error coefficient of temperature rise is only 6% compared with the test results of prototype, and the accuracy of finite element calculate method is verified. Taking the equal height and heat flux design parameters of reactor as research object, the natural convection cooling performance of reactor with and without the rain cover is investigated. It can be found that the temperature rise of reactor is significantly increased when adding the rain cover, and the reasons are given by analyzing the fluid velocity distribution of air dcuts between the encapsulation coils. In order to reduce the temperature rise of the reactor with the rain cover, the optimization method based on the orthogonal experiment design and finite element method is proposed. The six factors of the double rain cover are given, which mainly affect the temperature rise of reactor, and the five levels are selected, the influence curve and contribution rate of each factor on the temperature rise of reactor are analyzed. The results show that the contribution ratio of the parameter H1, L1 and L2, are obviously higher than the parameter H2, L3 and ?, so the more attention should be paid in the design of double rain cover. Meanwhile, the optimal structural parameters of rain cover are given based on the influence curves, and the temperature rise is only 43.25?C. The results show that the optimization method can reduce the temperature rise of reactor significantly. In addition, the temperature distribution of inner encapsulations coils of reactor are basically the same, the current carrying capacity of coils can be fully utilized, which provides an important guidance for the optimization design of reactor.

The Application of SolidWorks in Bridge Erecting Machine’s Structure Design

2012 ◽  
Vol 472-475 ◽  
pp. 678-682
Author(s):  
Tong Ying Shang Guan ◽  
Yang Lian ◽  
Di Wu
Keyword(s):  
Finite Element ◽  
3D Model ◽  
Design Research ◽  
Safety Evaluation ◽  
Calculated Data ◽  
Reference Value ◽  
Structure Design ◽  
Element Calculation ◽  
Reliable Operation ◽  
Through Hole

We have take the design of the complex machinery equipment DF900 erecting machine as an example discussed SolidWorks and its module COSMOSWork, COSMOSMotion’s application in bridge erecting machine’s development and design. We established bridge erecting machine’s 3D model, optimized the product’s structure and bridge through-hole speed, provide calculated data for safe and reliable operation of the equipment by finite element calculation. And have provided some certain reference value for use SolidWorks on large, complex mechanical product’s design, research and safety evaluation.

scholarly journals Energy-Saving Technology in Finite Element Calculation

2021 ◽  
Vol 2031 (1) ◽  
pp. 012032
Author(s):  
Feng Wang ◽  
Qianwen Han ◽  
Yurong Ma ◽  
Yaqiong Jiang ◽  
Dan Li ◽  
...  
Keyword(s):  
Finite Element ◽  
Energy Saving ◽  
Finite Element Calculation ◽  
Element Calculation ◽  
Energy Saving Technology

scholarly journals Temperature distribution in the chamber used for crystal growth of GaN under high pressure of nitrogen

1996 ◽  
Vol 1 ◽  
Author(s):  
S. Krukowski
Keyword(s):  
Finite Element ◽  
High Pressure ◽  
Crystal Growth ◽  
Temperature Distribution ◽  
Thermal Conditions ◽  
High Pressure Chamber ◽  
Vertical Temperature Gradient ◽  
Element Calculation ◽  
Vertical Temperature ◽  
Nitrogen Gas

The theoretical analysis of high pressure influence on the conditions of crystal growth of GaN is presented. High pressure influence on the transport and equilibrium properties of nitrogen is estimated using scaling approach. Nitrogen gas properties are used in the finite element calculation of the thermal conditions in the high pressure chamber. The temperature distribution during GaN growth in the vertical temperature-gradient configuration is obtained.

Analysis and Design of Oil Cooling Structure in Motor Shaft of New Energy Vehicle

2021 ◽  
Vol 69 (4) ◽  
pp. 26-34
Author(s):  
Xuejun Chen Chen ◽  
◽  
Lin Ma ◽  
Jun Shen ◽  
◽  
...  
Keyword(s):  
Temperature Rise ◽  
Heat Dissipation ◽  
Cooling System ◽  
Structure Design ◽  
Coupling Analysis ◽  
Efficient Operation ◽  
Fluid Structure ◽  
Analysis And Design ◽  
New Energy ◽  
New Energy Vehicle

Due to the small volume and high-power density of new energy vehicle motor, a large number of losses in the working process are converted into heat accumulation, resulting in temperature rise, which affects its efficient operation. Based on the heat conduction mechanism, four kinds of shaft oil cooling models with different structures are designed, which are comprehensively analysed by using the thermal-fluid-structure coupling analysis method, and the most effective cooling shaft oil cooling model is solved. The simulation is based on Ansoft Maxwell, and the loss results of each component of the motor are obtained, and the loss data is imported into the Fluent software for fluid-structure coupling analysis. By keeping the other variables consistent, the oil flow rate, pressure drop, and temperature rise of four kinds of in shaft oil cooling structures are analysed and compared. The experimental results show that the rectangle around type is the optimal oil cooling structure. In addition, based on the rectangle around oil duct model , the thermal-fluid-structure coupling analysis of the whole motor is carried out, and compared with the motor without cooling system. The temperature rise cloud diagram of the two motors shows that the former has more obvious heat dissipation effect than the latter, and effectively reduces the temperature rise of the motor, especially the rotor and permanent magnet parts, which verifies the rationality of the shaft cooling structure design.

Finite Element Modeling the Effect of Pressing Temperature and Temperature Rise on ECAE Process of CP-Ti

2007 ◽  
Vol 561-565 ◽  
pp. 1891-1894
Author(s):  
Hong Jiang ◽  
Chao Ying Xie
Keyword(s):  
Finite Element ◽  
Temperature Distribution ◽  
Temperature Rise ◽  
Equal Channel Angular Extrusion ◽  
Bulk Materials ◽  
3D Fem ◽  
Pressing Temperature ◽  
Ultrafine Grained ◽  
Angular Extrusion ◽  
Cp Ti

The aim of equal channel angular extrusion is to get ultrafine grained bulk materials. The practice process is not under isothermal conditions. It is important to understand the details of the deformation and temperature transient within the shear zone. The temperature rise and temperature distribution in the billet and die during equal channel angular extrusion at different pressing temperatures were investigated by using 3D FEM.

Design and Simulation of New Energy-Saving Burner

2012 ◽  
Vol 562-564 ◽  
pp. 847-850
Author(s):  
Xiao Man Chen ◽  
Gui Xiong Liu ◽  
Fei Yue Leng
Keyword(s):  
Energy Saving ◽  
Optimization Design ◽  
Cfd Simulation ◽  
Flow Direction ◽  
Reference Value ◽  
Combustion Efficiency ◽  
Structure Design ◽  
Heating Process ◽  
Process Pressure ◽  
New Energy

Aiming at improving burner combustion efficiency, reducing environmental pollution by burning, and to achieve the purpose of energy saving and emission reduction, a method of optimization design of burner is proposed. According to the method, new energy-saving burner system framework is analyzed, fuel combustion calculation, key institutions check and CFD simulation are combined in the technical route of burner structure design. Through the theoretical calculation and simulation results of the inlet institution, in meet conditions of heating process, pressure field of the inlet institution is relatively uniform, flow direction of velocity field in the ring canal is symmetrical, speed difference is small, pressure loss in actual burning allow range. The results show the method provided in this paper has reference value on burner structure optimization.

A New Energy Conservation Scheme for Sensor Network for Particulate Matter (PM)

2013 ◽  
Vol 475-476 ◽  
pp. 510-514
Author(s):  
Heng Luo ◽  
Jian Ping Chen ◽  
Ai Huang Guo ◽  
David Laurenson ◽  
De Yang Pei ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Sensor Networks ◽  
Theoretical Analysis ◽  
Energy Conservation ◽  
Energy Saving ◽  
Energy Management ◽  
Temporal Distribution ◽  
Distribution Characteristics ◽  
New Energy

Energy management is critically important for sensor networks for the PM pollutant due to the requirements of long-term observations for the sake of accuracy. In this paper, an energy saving scheme, basing on the temporal distribution characteristics of PM pollutants, is proposed. The reliability as well as efficiency of the proposed scheme is validated by experiments and theoretical analysis.

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