A Parallel Mixed Integer Programming-Finite Element Method Technique for Global Design Optimization of Power Transformers

Power transformers play an indispensable component in AC transmission systems. If the operating condition of a power transformer can be accurately predicted before the equipment is operated, it will help transformer manufacturers to design optimized power transformers. In the optimal design of the power transformer, the design value of the magnetic flux density in the core is important, and it affects the efficiency, cost, and life cycle. Therefore, this paper uses the software of ANSYS Maxwell to solve the instantaneous magnetic flux density distribution, core loss distribution, and total iron loss of the iron core based on the finite element method in the time domain. . In addition, a new external excitation equation is proposed. The new external excitation equation can improve the accuracy of the simulation results and reduce the simulation time. Finally, the three-phase five-limb transformer is developed, and actually measures the local magnetic flux density and total core loss to verify the feasibility of the proposed finite element method of model and simulation parameters.

Download Full-text

2-D coupled fluid-thermal analysis of oil-immersed power transformers based on finite element method

2016 IEEE Innovative Smart Grid Technologies - Asia (ISGT-Asia) ◽

10.1109/isgt-asia.2016.7796532 ◽

2016 ◽

Cited By ~ 1

Author(s):

Y. B. Zhang ◽

Y. L. Xin ◽

T. Qian ◽

X. Lin ◽

W. H. Tang ◽

...

Keyword(s):

Finite Element Method ◽

Thermal Analysis ◽

Finite Element ◽

Power Transformers ◽

Element Method

Download Full-text

Design Optimization for Double-T Root and Rim of Turbine Blade with Three-Dimensional Finite Element Method

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.215-216.239 ◽

2012 ◽

Vol 215-216 ◽

pp. 239-243

Author(s):

Ming Hui Zhang ◽

Di Zhang ◽

Yong Hui Xie

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Design Optimization ◽

Turbine Blade ◽

Equivalent Stress ◽

Three Dimensional ◽

Maximum Equivalent Stress ◽

Dimensional Finite Element ◽

Three Dimensional Finite Element ◽

Element Method

As the main bearing part in a turbine blade, the root carries most of the loads of the whole blade. The improvement of the root structure can be used to enhance the operation reliability of steam turbine. The research on design optimization for double-T root and rim of a turbine blade was conducted by three-dimensional finite element method. Based on the APDL (ANSYS parametric design language), a multi-variable parametric model of the double-T root and rim was established. Twelve characteristic geometrical variables of the root-rim were optimized to minimize the maximum equivalent stress. The optimal structure of the double-T root-rim is obtained through the optimization. Compared with the original structure, the equivalent stress level of the root and rim has a significant reduction. Specifically, the maximum equivalent stress of root and rim reduces by 14.25% and 13.59%, respectively.

Download Full-text

Introduction of a Novel and Powerful Optimization Method Using Genetic Algorithm and Finite Element Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.433-440.746 ◽

2012 ◽

Vol 433-440 ◽

pp. 746-753

Author(s):

Payam Karimi ◽

Shahin Shadlou ◽

Bahare Nazari

Keyword(s):

Genetic Algorithm ◽

Finite Element Method ◽

Finite Element ◽

Design Optimization ◽

Optimization Method ◽

Fast Convergence ◽

New Method ◽

Engineering Structures ◽

Proposed Model ◽

Element Method

Optimizing the complicated engineering structures has always been a huge issue. A technique for the design optimization of different components is presented using genetic algorithm and finite element method. To reduce the runtime and increase the efficiently of proposed model a new method of coupling is presented. In addition, two different problems were solved using the presented model and the results showed a great and fast convergence.

Download Full-text