Multiphysical Finite Element Modeling of Inductive Type Fault Current Limiters and Self Limiting Transformers

Tihanyi, Viktor; Györe, Attila; Vajda, István

doi:10.1109/tasc.2009.2018101

Cited by 13 publications

(8 citation statements)

References 6 publications

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“…The achievements of the last decades have unexpected twists in the direction of the transformer development. For example, there are comprehensive researches are in progress on the application of superconducting materials in power transformers [61][62][63][64][65][66][67][68][69].…”

Section: Trends In Transformer Technologymentioning

confidence: 99%

Evolution and Modern Approaches of the Power Transformer Cost Optimization Methods

Orosz

2019

Period. Polytech. Elec. Eng. Comp. Sci.

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Transformer design is a challenging engineering task, where the different physical fields have to be harmonized together to fulfill the implied specifications. Due to the difficulty of this task, it can be separated into several subproblems. The first subproblem, in the pre-concept phase, during the transformer design is the calculation of the cost optimal key-design parameters, where not only the technical but also the economical parameters have to be considered, as well. This subproblem belongs to the most general branch of the non-linear mathematical optimization problems. This paper presents the main directions of the evolution and trends in the power transformer design. Main directions of the considered research and the future trends in the field of preliminary design transformer optimization methods are summarized.

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Section: Trends In Transformer Technologymentioning

confidence: 99%

Evolution and Modern Approaches of the Power Transformer Cost Optimization Methods

Orosz

2019

Period. Polytech. Elec. Eng. Comp. Sci.

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“…The superconducting FEM model is based on detailed E-J power law [20,21], which can locally describe the superconductivity features, although creating a high computational burden [22]. In addition, HTS materials can be modelled by a non-linear function of electrical field E and current density J in a superconductor, which is related to a power law as follows [23]:…”

Section: Superconductor Characteristics and Modelingmentioning

confidence: 99%

“…The superconducting FEM model is based on detailed E – J power law [20, 21], which can locally describe the superconductivity features, although creating a high computational burden [22].…”

Section: Structure and Principle Of Lmg With Hts Bulksmentioning

confidence: 99%

Linear magnetic gear with HTS bulks for wave energy conversion

Liu

Zhang

Dong

2019

IET Renewable Power Generation

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This study proposes a linear magnetic gear (LMG). Unlike conventional LMGs, the proposed one purposely uses high-temperature superconducting (HTS) bulks replace permanent magnets (PMs). The high-speed mover of the magnetic gear is connected to the secondary of the linear permanent magnet generator (LPMG), which constitutes a direct-drive wave power system that converts wave energy into electrical energy. First, the LMG structure is presented according to the principle of magnetic field modulation, and the authors briefly analyzed the number of pole pairs of inner, outer, and ferromagnetic modulators. Second, they also established a finite element analysis model to analyze the performance of magnetic gear, including magnetic field distribution, radial air gap magnetic flux density, and force characteristic. An LMG with HTS bulks not only increased the radial air gap magnetic flux density but also improved the speed of LPMG. In conclusion, this experiment verifies the efficacy of direct-drive wave power takeoff system and effectively converts wave energy into electrical energy.

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“…Referring to figure 2, the HTS (BSCCO-2212 [10]) tube is fixed between the auxiliary copper coil (N a ) and the left outer limb thereby; the screen currents would prevent flux penetration into that limb during the rated operation, that is, the SLCIT works as a core-type CIT.…”

Section: Design and Operation Principle Of Slcitmentioning

confidence: 99%

Rational approach for self-limiting current injection transformers confirmed by coupled electromagnetic–thermal FEM simulation

Farhadi

Heydari

2011

Supercond. Sci. Technol.

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Current injection transformer (CIT) systems are within the major group of the standard-type test of high current components in the electrical industry. The present precious approach contemplates an arrangement for a rational design of a self-current limiting transformer (SLT) being integrated by a single unit 25 kA CIT system for fast overcurrent detection in stipulated current tests. This paper describes mathematical formulations based on an electric models and the dominant effects of an auxiliary winding on the rate of the self-limiting process of the system. This requires the evaluation of multiphysical (i.e. coupling of the electromagnetic and thermal parts) finite element modelling and simulations for three different approaches to suit the designer’s choice. An overcurrent causes a considerable distortion of axial leakage flux, which in turn produces high radial forces. The transient analysis of the leakage flux densities and the corresponding electromagnetic forces on windings of the CIT and proposed SLT are the other objects of this paper. Moreover, the distribution of the flux density and the corresponding localized losses within the SLT core are further objects of this paper. However, this paper will mark another important event in superconductor technology and augment efficiency and compactness from which a lower overall cost of the CIT system could be attainable.

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Multiphysical Finite Element Modeling of Inductive Type Fault Current Limiters and Self Limiting Transformers

Cited by 13 publications

References 6 publications

Evolution and Modern Approaches of the Power Transformer Cost Optimization Methods

Evolution and Modern Approaches of the Power Transformer Cost Optimization Methods

Linear magnetic gear with HTS bulks for wave energy conversion

Rational approach for self-limiting current injection transformers confirmed by coupled electromagnetic–thermal FEM simulation

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