Compact Power Supply With Integrated Energy Storage and Recovery Capabilities for Arbitrary Currents up to 2 kA

Lampasi, Alessandro; Taddia, Giuseppe; Tenconi, S.; Gherdovich, Filippo

doi:10.1109/tps.2018.2859178

Cited by 14 publications

(4 citation statements)

References 10 publications

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“…Energy storage performances and capabilities can be improved and widened by a new class of devices known as supercapacitors (SCs), ultracapacitors, pseudocapacitors, double layer capacitors or electrochemical capacitors [1]. In particular, SCs are very suitable for applications requiring high specific capacitance and high specific power [2,3]. Unfortunately, SCs are characterized by several non-ideal and complex behaviors that must be modeled and taken into account.…”

Section: Introductionmentioning

confidence: 99%

Modeling Non-Ideal Behaviors of Supercapacitors' Equivalent Capacitance

Cocchi

Lampasi

2020

2020 IEEE International Conference on Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Syst

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Supercapacitors can improve energy storage performances and capabilities, in particular for applications requiring high specific capacitance and high specific power. Unfortunately, supercapacitors are characterized by several non-ideal and complex behaviors that must be modeled and taken into account. One of the most relevant issue consists in the definition of the equivalent capacitance and then to the energy that can be potentially stored and practically used. This paper discusses the possible capacitance definitions and measurement methods, including the possible approaches to model the capacitance and its non-idealities.

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Section: Introductionmentioning

confidence: 99%

Modeling Non-Ideal Behaviors of Supercapacitors' Equivalent Capacitance

Cocchi

Lampasi

2020

2020 IEEE International Conference on Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Syst

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“…On the other hand, few examples of cells with higher capacitances exist. It is important to stress that the rated capacitance reported is the minimal value assured and is normally exceeded in the practice, even by above 10% [3]. • The rated current Ir (that is, the maximum the maximum continuous current producing an increase of temperature within 15 °C) is very similar and is in the range 128÷150 A).…”

Section: A Commercial Sc Cellsmentioning

confidence: 96%

“…For these reasons, they found a wide range of applications in transportations, in industrial systems and in electric power grids. In particular, SCs are exceptionally effective when repetitive pulsed power is required [3], [4]- [5]. Furthermore, the integration of SCs into hybrid solutions, like their combination with energy-intensive sources as lithium-ion batteries, appears as the potential key approach for future flexible and cost-effective energy storage devices or systems [1], [4], [6]- [9].…”

Section: Introductionmentioning

confidence: 99%

Characterization and Model Parameters of Large Commercial Supercapacitor Cells

et al. 2021

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The paper reports the results of the test and modelling activities carried out on large commercial supercapacitor cells at high current. Four commercials cells, with rated capacitance of 3000 F and rated voltage of 2.7 V, are considered. All cells are submitted to consecutive charge/discharge cycles at constant current. A test current in the range 80-130 A is used, which is comparable with the maximum operating current (up to 150 A) that the cells can reach in practical operations. A circuit model of the cells, able to reproduce the most relevant dynamic behavior, with a good compromise between accuracy, simplicity and robustness of the model's parameters, is also developed and validated against the experimental data. It is shown that all the investigated commercial cells are characterized by similar phenomena and comply with the same circuit model. Moreover, it is shown that the circuit parameters of the cells are in the same range and are weakly dependent on the test current. The obtained circuit parameters are accurately reported for all the cells and made fully accessible to users.

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“…In order to increase the energy that can be supplied to the load while decoupling it from the grid as desired, m SMs were connected in parallel (not only at the terminals of the load but also at each SM level) and the available stored energy of each SM was increased by replacing the capacitors with supercapacitors (SCs). This is not the first SC-based PS developed for fusion applications [12][13][14], but it is the first MMC-based one that has been studied to be scalable, fault-tolerant and suitable also for energy storages apart from fusion applications, such as 50 Hz grid stabilization purposes. Moreover, differently from conventional MMC, arm inductors, which are commonly used to control the currents of the MMC arms, are removed from the proposed topology to avoid very high voltage drops (proportional to the 54 kA DC current) and further bulkiness of these high-current PSs.…”

Section: Introductionmentioning

confidence: 99%

Development of a Scalable MMC Pulsed Power Supply through HIL Methodology

Terlizzi

Magnanimo

Santoro³

et al. 2023

Energies

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Nuclear fusion experiments are becoming one of the most interesting focuses of research, given the hope of generating programmable, safe, and green energy. Among them, ASDEX (axially symmetric divertor experiment) upgrade has been operating at the Max Planck Institute for Plasma Physics (IPP) research center since 1991. To ignite and confine the plasma, several coils must be supplied through controllable high-current pulsed power supplies. The toroidal field magnets are here considered and a modular multilevel converter (MMC)-like system was designed and tested thanks to a small-scale prototype in previous works. The MMC-like topology, consisting of full-bridge submodules (SMs) with IGBTs and supercapacitor and exploitable also for other industrial applications, was chosen because of its modularity, redundancy, fault tolerance, and large amount of stored energy. The prototype, made of four SMs, was necessary to highlight critical key points in the design process. However, its scalability must be further tested before building a full-scale power supply, meant to reach almost 2400 SMs to guarantee the energy required by the load. This paper aims at validating hardware-in-the-loop (a powerful, safe, and relatively inexpensive real-time simulation environment that enables testing with real control boards) as a useful technology for power supply scalability studies and not only for control strategy tests. The results obtained previously from the prototype will allow us to finally increase the number of SMs and test the MMC-like scalability.

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Compact Power Supply With Integrated Energy Storage and Recovery Capabilities for Arbitrary Currents up to 2 kA

Cited by 14 publications

References 10 publications

Modeling Non-Ideal Behaviors of Supercapacitors' Equivalent Capacitance

Modeling Non-Ideal Behaviors of Supercapacitors' Equivalent Capacitance

Characterization and Model Parameters of Large Commercial Supercapacitor Cells

Development of a Scalable MMC Pulsed Power Supply through HIL Methodology

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