Design and performance of a 1 MW-5 s high temperature superconductor magnetic energy storage system

Morandi, Antonio; Gholizad, Babak; Fabbri, Massimo

doi:10.1088/0953-2048/29/1/015014

Cited by 38 publications

(11 citation statements)

References 38 publications

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“…The feasibility of multi-strand Rutherford cables made of MgB 2 round wires has been demonstrated [21]. The procedure described in [22] is used to carry out the design of the coil. More details about the considered MgB 2 conductor are also reported therein.…”

Section: Layout Of the Heatermentioning

confidence: 99%

In-Depth Induction Heating of Large Steel Slabs by Means of a DC Saturating Field Produced by Superconducting Coils

Morandi

Fabbri

2016

IEEE Trans. Appl. Supercond.

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The feasibility of an innovative in-depth AC induction heating method for large steel slabs is investigated. Beside the AC field, which induces the heating currents, a large DC magnetic field is also applied, which brings the material to saturation. Due to the saturation, the permeability is reduced by orders of magnitude and the penetration depth is drastically increased, thus enabling much faster and more uniform heating. In order to produce the field needed for the saturation of common steel workpieces, lossless DC superconducting magnets need to be employed.A possible layout of an AC induction heater employing magnetic saturation (saturated AC induction heater) is discussed. The conceptual design of the superconducting magnet needed is carried out based on present state-of-the-art superconducting materials. The performance of the saturated AC induction heater is investigated numerically and compared with the case without magnetic saturation.

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Section: Layout Of the Heatermentioning

confidence: 99%

In-Depth Induction Heating of Large Steel Slabs by Means of a DC Saturating Field Produced by Superconducting Coils

Morandi

Fabbri

2016

IEEE Trans. Appl. Supercond.

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“…This system serves the purpose of offering energy compensation and mitigating energy fluctuations, as depicted in figure 1. Thus, superconducting energy storage (SMES) systems stand out as promising candidate due to their rapid response rate, high efficiency of energy conversion, and swift power compensation [10,11]. At the core of the SMES system lies the superconducting magnet, which operates without incurring Ohmic losses during the conduction of current.…”

Section: Introductionmentioning

confidence: 99%

“…A collaborative team in Japan involving Chubu Electric Power, Mitsubishi Heavy Industries, and Kyoto University undertook the conceptual design of a 2 gigajoule (GJ) SMES system utilizing YBCO wires [10]. Comprising 180 coils, this system operates with a current of 540 A at 20 K. Antonio Morandi from the University of Bologna achieved the development of a 1 MJ-5 s YBCO unit with a minimal current requirement of 1 kA at 16 K [11], while also contemplating the potential incorporation of MgB2 wires. Notably, several institutions in China have been energetically advancing the practical implementation of HTS SMES systems.…”

Section: Introductionmentioning

confidence: 99%

High temperature superconducting CORC cable with variable winding angles for low AC loss and high current carrying SMES system

Zheng,

Cheng,

et al. 2023

Supercond. Sci. Technol.

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Owing to the rising demand for enhanced high-current capacity within superconducting magnetic energy storage (SMES) system used in power grids, there is a growing focus on enhancing the current-carrying capability of SMES setups wound with conductor on round core (CORC) cables. However, it is crucial to note that the dissipation of AC losses in CORC cables during rapid charge and discharge cycles can substantially impact the safe operation of SMES. The CORC cable is crafted by spirally winding numerous ReBCO tapes around copper tubes. Even slight alterations in the winding angles of these tapes can result in shifts at current distribution across the ReBCO tapes, thus leading to differences in AC losses. Hence, the primary objective of this paper is to study the effect of varying winding angles of each ReBCO layer on AC loss. The adoption of variable angles results in the reduction of current flowing through the outermost tapes. And the AC losses in the outermost tapes happen to account for the majority of the total AC losses. Through simulations and experiments, it was observed that the AC loss in the CORC cable with variable angles (4 × 12, 25°–40°) was 25% lower than that in the case of fixed angles (3 × 11, 45°). These findings demonstrate a noteworthy downward trajectory in AC losses when variable angles are applied to the CORC cable. These insights hold significant value for the practical application of CORC cables within SMES systems.

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“…High temperature superconducting (HTS) coils present a great interest for electric power applications, such as electrical machines, superconducting stabilizer and energy storage systems [1][2][3]. These devices are designed for working in DC and/or AC conditions, therefore, hysteresis losses (AC losses) are expected in both steady and transient state operation.…”

Section: Introductionmentioning

confidence: 99%

Fast modeling approach of large-scale non-inductive HTS coils under different current supply

et al. 2023

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This paper presents a fast-integral modeling approach for the design and characterization of large-scale non-inductive high temperature superconducting (HTS) coils made of first-generation HTS tape. The integral modeling is combined with a strategy of far tape approximation allowing to model a reduced set of consecutive tapes instead of the entire coil. It makes it possible to estimate the losses and the current density distribution in the coil, under different current supply. This leads to a considerable reduction in the computation time. The calculated AC losses show a good agreement with the Norris ellipse formula and measurements, highlighting the importance of considering the elliptical section of the superconductor in the tape, in the modeling. The developed modeling approach is in particular useful in the AC+DC mode, where Norris’s formulas cannot be used to determine the losses. Besides, some interesting phenomena have been observed, related to the current distribution in the tapes at different AC and DC current values.

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Design and performance of a 1 MW-5 s high temperature superconductor magnetic energy storage system

Cited by 38 publications

References 38 publications

In-Depth Induction Heating of Large Steel Slabs by Means of a DC Saturating Field Produced by Superconducting Coils

In-Depth Induction Heating of Large Steel Slabs by Means of a DC Saturating Field Produced by Superconducting Coils

High temperature superconducting CORC cable with variable winding angles for low AC loss and high current carrying SMES system

Fast modeling approach of large-scale non-inductive HTS coils under different current supply

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