Optimal Design of Flux Diverter Using Genetic Algorithm for Axial Short Circuit Force Reduction in HTS Transformers

Moradnouri, Ahmad; Vakilian, Mehdi; Hekmati, Arsalan; Fardmanesh, Mehdi

doi:10.1109/tasc.2019.2923550

Cited by 32 publications

(13 citation statements)

References 39 publications

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“…Designs of the HTS Windings with the Flux Diverters W Two designs based on an axial symmetric transformer winding model [24] are provided in Fig. 1, in which four and two FDs are applied to the ends of the windings, respectively [16], [19]. Fig.…”

Section: Modeling Of the Hts Windings With The Flux Di-vertersmentioning

confidence: 99%

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Application of Flux Diverters in High Temperature Superconducting Transformer Windings for AC Loss Reduction

Fang

Wang

Sun

et al. 2021

IEEE Trans. Appl. Supercond.

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Flux diverters (FDs) are used in High Temperature Superconducting (HTS) transformers for AC loss reduction and flux optimization. In this paper, a 2D axial symmetric superconducting winding model is proposed and two designs of flux diverters are applied to the windings. A homogenization approach is used to analyze the windings with large turn numbers. The key parameters including the number, width, height and the spatial positions of the FDs are adjusted for AC loss and magnetic flux analysis. The means of obtaining optimum designs of the FDs is provided and can be used to develop new winding designs with FDs, which contributes to better electromagnetic performance and higher efficiency of HTS transformers.

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Section: Modeling Of the Hts Windings With The Flux Di-vertersmentioning

confidence: 99%

“…In [18], the effects of FDs in a 6.6 MVA HTS transformer were analyzed. In [19], short circuit force reduction for HTS transformer windings was achieved by optimization design of FDs. They were also used for improving both DC and AC performances of HTS coils [20].…”

Section: Introductionmentioning

confidence: 99%

Application of Flux Diverters in High Temperature Superconducting Transformer Windings for AC Loss Reduction

Fang

Wang

Sun

et al. 2021

IEEE Trans. Appl. Supercond.

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“…The total number of tap adjustments allowed is T n times. The life expectancy when the tap is never adjusted is 1 year [6]. After T n times of tap adjustment, the life is shortened to a years.…”

Section: The Reactive Power Optimisation Modelmentioning

confidence: 99%

Distribution network monitoring and management system based on intelligent recognition and judgement

Xue

Sun

et al. 2021

Applied Mathematics and Nonlinear Sciences

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Based on the shortcomings of the current intelligent management of distribution networks, the article designs and implements a remote intelligent detection system for live distribution networks. The article constructs and realises an algorithm based on a genetic algorithm (GA) and agent system. The algorithm is applied to energy-saving intelligent supervision of equipment in the distribution network. The simulation experiment shows that the integrated algorithm based on GA and agent system can accurately detect power quality in real time. At the same time, the algorithm can monitor the energy consumption of equipment in the distribution network under multiple disturbances.

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“…Due to the low resistance of the HTS tapes, a slight imbalance between the inductances of the parallel branches [double pancakes (DPs)] causes non-uniformity in currents, so that in the normal case, the current in the highest and lowest DP may rise up to two times more than other DPs (Hu et al, 2017a(Hu et al, , 2017b(Hu et al, , 2017c(Hu et al, , 2017d. The use of flux diverter in Kim et al (2005), the investigation of the structural effect of flux diverter in Wu et al (2019), the use of genetic algorithm for the optimal design of flux diverter in Moradnouri et al (2019) have been used to reduce the magnetic field and short-circuit forces in the HTS transformers. In Chen et al (2003), considering different configurations for the secondary winding, the circulating current distribution has been investigated.…”

Section: Introductionmentioning

confidence: 99%

“…The use of flux diverter in Kim et al (2005), the investigation of the structural effect of flux diverter in Wu et al (2019), the use of genetic algorithm for the optimal design of flux diverter in Moradnouri et al (2019) have been used to reduce the magnetic field and short-circuit forces in the HTS transformers. In Chen et al (2003), considering different configurations for the secondary winding, the circulating current distribution has been investigated.…”

Section: Introductionmentioning

confidence: 99%

Impact of the radius of double pancake windings on the electromagnetic behavior of high temperature superconducting transformer

Attar

Moradnouri

Mirghaforian

et al. 2022

COMPEL

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Purpose It has constantly been important to investigate the distribution of magnetic fields in high temperature superconducting (HTS) transformers because the high magnetic field applied to the HTS tapes reduces the critical current and increases the ac losses. The purpose of this study is investigation of the impact of the radius of double pancake windings on the electromagnetic behavior of HTS transformer. In this paper, by changing the radius of the windings in a step-by-step manner in two modes, the electromagnetic behaviors in double pancakes (DPs) of a single-phase HTS transformer have been investigated. Design/methodology/approach In this paper a 15.4 kVA single-phase HTS transformer has been designed and simulated using the finite element method, using COMSOL multiphysics software. The effect of changing the radius of the low-voltage (LV) and high-voltage (HV) windings on the electromagnetic parameters such as distribution of circulating currents and magnetic field in the LV DP windings has been investigated. Findings According to the results, by increasing the radius of the LV winding, the electromagnetic behavior of the highest and lowest DPs becomes highly undesirable, while in other DPs, it becomes desirable. The same thing happens by increasing the radius of the LV and HV windings, but with much less intensity. Therefore, according to Ce, the most optimal case is when the two windings (HV and LV) are close to each other and to the core, and if the radius needs to be increased, it is better to increase the radius of both windings. Originality/value For the first time, the impact of the radius of DP windings on the electromagnetic behavior of HTS transformer has been investigated.

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Optimal Design of Flux Diverter Using Genetic Algorithm for Axial Short Circuit Force Reduction in HTS Transformers

Cited by 32 publications

References 39 publications

Application of Flux Diverters in High Temperature Superconducting Transformer Windings for AC Loss Reduction

Application of Flux Diverters in High Temperature Superconducting Transformer Windings for AC Loss Reduction

Distribution network monitoring and management system based on intelligent recognition and judgement

Impact of the radius of double pancake windings on the electromagnetic behavior of high temperature superconducting transformer

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