Solid state transformer technologies and applications: A bibliographical survey

Adabi, M. Ebrahim; Martínez-Velasco, Juan A.

doi:10.3934/energy.2018.2.291

Cited by 14 publications

(4 citation statements)

References 404 publications

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“…To achieve HFT some important points are to be put into considerations. ese include [24]: (i) proper magnetic material selection to achieve the required high power density and low losses; (ii) ermal behavior to avoid breakdown especially for high-voltage and high-power designs; (iii) the winding con guration of the HFT can signi cantly affect its efficiency at high frequency; (iv) Insulation requirement at high-voltage operation should be considered. Some magnetic materials suitable for high powers and their merits and demerits are tabulated in Table 1 [20].…”

Section: Parallel Resonant Convertersmentioning

confidence: 99%

Glance into solid-state transformer technology: a mirror for possible research areas

Umar

Jibril²,

Jimoh³

et al. 2020

J. Appl. Mat. Tech.

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Solid-State Transformer (SST), a power electronics based transformer is an emerging technology in electric power system. The transformer is being investigated to completely replace existing Line/Low Frequency Transformer (LFT). SST is composed of either of the two topologies: AC-DC-AC, two steps approach; or AC-AC, single-step approach. The two steps approach consists of three stages: AC-DC; DC-DC; and DC-AC stages. The DC-DC stage is made up of a boost DC-DC converter, a DC-AC inverter and a High Frequency Transformer, HFT. Therefore, SST performs the tasks of LFT by means of power electronic converters and HFT. The main essence of SST is to provide solution to the problem of bulkiness and heaviness of the LFT in the power distribution network. This is with the view to providing reduction in construction cost, cost of maintenance and transportation. The power electronics transformer provides numerous advantages which are grouped into: The transformer has high power density; it functions in blackouts and brownouts; and it provides easy means of distributed renewable energy integration into associated grid. Therefore, this paper provides a glance into the technology of the SST for its better understating and promotion of research activities in the area.

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Section: Parallel Resonant Convertersmentioning

confidence: 99%

Glance into solid-state transformer technology: a mirror for possible research areas

Umar

Jibril²,

Jimoh³

et al. 2020

J. Appl. Mat. Tech.

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show abstract

“…These types of isolated and bidirectional DC-AC converters are commonly used in topologies called solid-state transformers (SST) [16,17]. Fig.…”

Section: Introductionmentioning

confidence: 99%

Novel modified phase‐shift modulation strategy for isolated AC–DC power converters

Llomplat

Bosso

Carballo

et al. 2020

IET Power Electronics

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Different power converter topologies are used to perform the energy exchange between an AC grid and a DC source belonging to a hybrid electric micro-grid. A single-phase single-stage isolated AC-DC power converter is one of them. Moreover, this power converter can operate under different modulation strategies. The phase-shift modulation (PSM) strategy is capable of varying the phase between the voltages applied to the high-frequency transformer terminals of the power converter in order to control the energy flow in both directions. Based on the PSM strategy, this study presents a novel modified PSM strategy capable of controlling the power flow in both directions and obtaining a current with low total harmonic distortion and a power factor close to 1 for the entire operating range on the AC side. Considering the novel modulation strategy to be proposed, a comparison of three PSM-based modulation strategies was carried out taking into account the total harmonic distortion of current injected into the AC grid, the power factor and the average power transferred. A theoretical analysis was carried out and the results obtained were validated by means of experimental results.

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“…The evolution of SST technology has been driven by many major factors, such as advances in wide bandgap semiconductor devices, continuous improvements in soft magnetic materials, robust control system schemes, and real-time communication technologies [5,6]. The authors in [7] discussed several technological, implementation, and economic challenges for grid applications. Such challenges include reliability, cost, protection, efficiency, and electrical insulation.…”

mentioning

confidence: 99%

Design and Control of Two-Stage DC-AC Solid-State Transformer for Remote Area and Microgrid Applications

et al. 2023

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The critical challenges with integrating renewable energy into the grid are smooth power flow control, isolation between the high-voltage and low-voltage networks, voltage regulation, harmonic isolation, and power quality regulation. This paper considers the design and construction of a two-stage DC-AC solid-state transformer based on wide bandgap (WBG) semiconductor technologies, an optimized medium-frequency transformer, and PI and dq controllers for supplying urban area electric drive systems and microgrid applications. The designed SST consists of a dual active bridge (DAB) DC-DC converter followed by a DC-AC three-phase inverter. Each stage of the SST was simulated with independent controllers. The proposed system was initially developed in MATLAB/Simulink and a laboratory prototype was constructed to verify the results experimentally. Resistive and inductive load were used to test the load disturbance to evaluate the voltage regulation performance. This work has comprehensively provided the performance of a double stage (DC-DC and DC-AC converter) by taking into consideration input voltage, load disturbance, and voltage tracking both in simulation and experiment. The dual active bridge with its controller is able to maintain the desired output reference voltage with minimal voltage ripples under input voltage fluctuations and load variations. Similarly, the three-phase DC-AC converter’s controller exhibits better performance in tracking the desired reference voltage and producing well-regulated AC voltage with low harmonic distortion.

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Solid state transformer technologies and applications: A bibliographical survey

Cited by 14 publications

References 404 publications

Glance into solid-state transformer technology: a mirror for possible research areas

Glance into solid-state transformer technology: a mirror for possible research areas

Novel modified phase‐shift modulation strategy for isolated AC–DC power converters

Design and Control of Two-Stage DC-AC Solid-State Transformer for Remote Area and Microgrid Applications

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