Relevant bibliographies by topics / Solid-state transformer (SST)

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  2. Dissertations / Theses
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Academic literature on the topic 'Solid-state transformer (SST)'

Author: Grafiati
Published: 4 June 2021
Last updated: 30 January 2023

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Journal articles on the topic "Solid-state transformer (SST)"

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Khan, Saniya, Khaliqur Rahman, Mohd Tariq, Salman Hameed, Basem Alamri, and Thanikanti Sudhakar Babu. "Solid-State Transformers: Fundamentals, Topologies, Applications, and Future Challenges." Sustainability 14, no. 1 (December 29, 2021): 319. http://dx.doi.org/10.3390/su14010319.

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Solid-state transformers (SSTs) have emerged as a superior alternative to conventional transformers and are regarded as the building block of the future smart grid. They incorporate power electronics circuitry and high-frequency operation, which allows high controllability and enables bi-directional power flow, overcoming the limitations of conventional transformers. This paper presents a detailed analysis of the solid-state transformer, expounding the fundamentals, converter topologies, applications, and future challenges of the SST in a systematic manner. The paper discusses the necessity of improved replacement of the low-frequency transformers (LFTs) and presents the configuration of SST. It presents SST fundamentals in individual stages and explores its origin and evolution. The basic topologies, their specifications, and control strategies are also described. The applications of SST as a replacement of LFTs are discussed along with recent applications. The future challenges for real-time implementation of SSTs are explored, and research directions are proposed.
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Liu, Yang, Da Hai Zhang, and De Da Sun. "Performance Analysis of a Solid State Transformer for Smart Grid." Applied Mechanics and Materials 441 (December 2013): 174–77. http://dx.doi.org/10.4028/www.scientific.net/amm.441.174.

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Solid State Transformer (SST) has many attractive characteristics, including power quality improvement and reactive power compensation. The paper investigates the topology and control schemes of SST, and discusses its flexibility and reliability for both grid and customers. A model of SST applied for distribution network is constructed, and simulation shows the SST with appropriate control scheme can provide excellent power supply during both steady-state and dynamic-state with varying load.
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Umar, Bashir Musa, Yusuf Jibril, Boyi Jimoh, Abdullahi Bala Kunya, Yusuf Abubakar Maiwada, Safiya Aliyu, and Musa Mohammed. "Glance into solid-state transformer technology: a mirror for possible research areas." Journal of Applied Materials and Technology 2, no. 1 (October 10, 2020): 1–13. http://dx.doi.org/10.31258/jamt.2.1.1-13.

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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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Yun, Chun-gi, and Younghoon Cho. "Active Hybrid Solid State Transformer Based on Multi-Level Converter Using SiC MOSFET." Energies 12, no. 1 (December 26, 2018): 66. http://dx.doi.org/10.3390/en12010066.

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As the types of loads have been diversified and demand has increased, conventional distribution transformers are difficult to maintain the constant voltage against voltage drop along with distance, grid voltage swell/sag, and various loads. Also, it is hard to control the power flow when connecting renewable energy sources. Active hybrid solid state transformer (AHSST) is application to keep the voltage and power quality. AHSST is a system that combines conventional distribution transformer and converter. Accordingly, it can be applied directly to distribution infrastructure and it has both the advantages of solid state transformer (SST) and conventional transformer. AHSST is capable of active voltage and current control and power factor control. It has a simpler structure than SST and it can perform the same performance with the lower rating converter. This paper presents two stage AHSST system based on multi-level converter. The converter is composed of the back-to-back converter using silicon carbide (SiC) metal-oxide semiconductor field effect transistor (MOSFET). Proposed system has a wider voltage and power flow control range, lower filter size, and simpler control sequence than existing AHSST systems. The performance of the proposed system was verified by prototype system experiments.
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Jeong, Dong-Keun, Hyeok-Jin Yun, Si-Ho Park, Myoung-Ho Kim, Myung-Hyo Ryu, Ju-Won Baek, and Ho-Sung Kim. "13.2 kV Class 3-Phase Solid State Transformer System Based on EtherCAT Communication." Electronics 11, no. 19 (September 27, 2022): 3092. http://dx.doi.org/10.3390/electronics11193092.

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This paper presents a 13.2 kV class 3-phase solid-state transformer (SST) based on EtherCAT communication. In general, when the structure of the unit module is determined, the number of high-frequency isolated transformers (HFIT) is also proportional to the number of modules. The structure most considered in SST is a 1:1 combination of AC/DC converter and DC/DC converter. To optimally implement a 3-phase SST, a topology for reducing passive elements such as switching elements and HFIT is proposed. It also describes the design of HFIT used in DC/DC converter. EtherCAT communication with high transmission speed and expandability is applied to control the SST composed of unit modules stably, and a multi-core microcontroller unit (MCU) is applied to achieve both a high-speed communication cycle and complicated control algorithm execution. The discussions are validated using a 300 kW 13.2 kV class 3-phase SST prototype in various conditions.
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Valedsaravi, Seyedamin, Abdelali El Aroudi, and Luis Martínez-Salamero. "Review of Solid-State Transformer Applications on Electric Vehicle DC Ultra-Fast Charging Station." Energies 15, no. 15 (August 2, 2022): 5602. http://dx.doi.org/10.3390/en15155602.

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The emergence of DC fast chargers for electric vehicle batteries (EVBs) has prompted the design of ad-hoc microgrids (MGs), in which the use of a solid-state transformer (SST) instead of a low-frequency service transformer can increase the efficiency and reduce the volume and weight of the MG electrical architecture. Mimicking a conventional gasoline station in terms of service duration and service simultaneity to several customers has led to the notion of ultra-fast chargers, in which the charging time is less than 10 min and the MG power is higher than 350 kW. This survey reviews the state-of-the-art of DC ultra-fast charging stations, SST transformers, and DC ultra-fast charging stations based on SST. Ultra-fast charging definition and its requirements are analyzed, and SST characteristics and applications together with the configuration of power electronic converters in SST-based ultra-fast charging stations are described. A new classification of topologies for DC SST-based ultra-fast charging stations is proposed considering input power, delta/wye connections, number of output ports, and power electronic converters. More than 250 published papers from the recent literature have been reviewed to identify the common understandings, practical implementation challenges, and research opportunities in the application of DC ultra-fast charging in EVs. In particular, the works published over the last three years about SST-based DC ultra-fast charging have been reviewed.
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Abu-Siada, Ahmed, Jad Budiri, and Ahmed Abdou. "Solid State Transformers Topologies, Controllers, and Applications: State-of-the-Art Literature Review." Electronics 7, no. 11 (November 5, 2018): 298. http://dx.doi.org/10.3390/electronics7110298.

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With the global trend to produce clean electrical energy, the penetration of renewable energy sources in existing electricity infrastructure is expected to increase significantly within the next few years. The solid state transformer (SST) is expected to play an essential role in future smart grid topologies. Unlike traditional magnetic transformer, SST is flexible enough to be of modular construction, enabling bi-directional power flow and can be employed for AC and DC grids. Moreover, SSTs can control the voltage level and modulate both active and reactive power at the point of common coupling without the need to external flexible AC transmission system device as per the current practice in conventional electricity grids. The rapid advancement in power semiconductors switching speed and power handling capacity will soon allow for the commercialisation of grid-rated SSTs. This paper is aimed at introducing a state-of-the-art review for SST proposed topologies, controllers, and applications. Additionally, strengths, weaknesses, opportunities, and threats (SWOT) analysis along with a brief review of market drivers for prospective commercialisation are elaborated.
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Li, Zheng, Tao Zheng, Yani Wang, and Chang Yang. "A Hierarchical Coordinative Control Strategy for Solid State Transformer Based DC Microgrids." Applied Sciences 10, no. 19 (September 29, 2020): 6853. http://dx.doi.org/10.3390/app10196853.

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A solid state transformer (SST), as a kind of energy router in the Energy Internet, provides a unified access point for AC or DC distributed power subjects. However, the DC-link capacitors inside the SST will suffer huge voltage fluctuations when the output power of the microgrid changes dramatically. With respect to this problem, caused by the random and intermittent characteristics of distributed generation (DG), a hierarchical coordinative control strategy is proposed. Compared with the common independent control, the proposed method not only makes full use of the regulation capacity of super capacitors, but also enhances the dynamic power tracking speed and reduces the speed difference between different stages of an SST. The dynamic voltage response under the proposed method is analyzed in frequency domain and compared with the independent control. To validate the effectiveness of the coordinative control strategy, a simulation model of an SST-based grid-connected DC microgrid system is established, and the topology of the SST is improved. The voltage stability of the DC bus is compared under different control strategies, and the coordinative control strategy is also verified, effectively under transition conditions.
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Ismail, Abdelrahman, Mahmoud S. Abdel-Majeed, Mohamed Y. Metwly, Ayman S. Abdel-Khalik, Mostafa S. Hamad, Shehab Ahmed, Eman Hamdan, and Noha A. Elmalhy. "Solid-State Transformer-Based DC Power Distribution Network for Shipboard Applications." Applied Sciences 12, no. 4 (February 14, 2022): 2001. http://dx.doi.org/10.3390/app12042001.

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Due to simplicity, efficiency, and the ability to accommodate energy storage devices, DC distribution networks have been seen as an optimal alternative to AC distribution networks, especially aboard future electric ships. The emerging distribution DC system entails new control and management techniques. Therefore, an integrated DC power distribution network aboard an electric ship is selected as the case study in this paper. To meet the requirements of such a large-scale mobile power system, a multiport solid-state transformer (SST) based on silicon carbide (SiC) switches/MOSFETs is proposed. Thus, the system embodiment can significantly be reduced. Moreover, at the DC distribution level, a high penetration of renewable generation with energy storage is allowed and a six-phase asymmetrical induction machine (IM) can directly be integrated. Simulations have been conducted based on a 2 MW shipboard distribution network. The effects of the propulsion system dynamics on the SST are highlighted as well. Finally, a 2 kW lab-scale prototype has been implemented to validate the theoretical findings.
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Oliveira, Tiago, André Mendes, and Luís Caseiro. "Model Predictive Control for Solid State Transformers: Advances and Trends." Energies 15, no. 22 (November 8, 2022): 8349. http://dx.doi.org/10.3390/en15228349.

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Due to its high functionality, the solid state transformer (SST) represents an emerging technology with huge potential to replace the conventional low-frequency transformer (LFT) in a wide range of applications, including railway traction, smart grids, and others. On the other hand, model predictive control (MPC) has proven to be a highly promising control approach for several power electronics systems, especially those based on multiple power converters. Considering these facts, over recent years, different MPC techniques have been proposed for different types of SSTs. In addition to that, numerous MPC strategies have also been investigated for various power converters topologies that can be used in SSTs. However, a paper summarizing and discussing MPC strategies in the framework of SSTs has not yet been proposed in the literature, being the main goal of this work. In this paper, all the existing MPC techniques in complete SST topologies will be presented and discussed. In addition, for the sake of the example, an overview of MPC strategies in converter topologies typically used in SSTs will also be presented.
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Dissertations / Theses on the topic "Solid-state transformer (SST)"

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Wolf, Marko. "Design and implementation of a modular converter with application to a solid state transformer." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2773.

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Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2009.
ENGLISH ABSTRACT: The purpose of a solid state transformer (SST) is to use power electronic converters to mimic the operation of the conventional distribution transformer. These power electronic converters are proposed to overcome the disadvantages of the conventional distribution transformer. The advantages of a SST include near perfect voltage regulation and harmonic isolation between the primary and secondary windings of the transformer. This thesis discusses the design and development of the different converters in a solid state transformer (SST). A prototype modular back-to-back converter is developed for the input and isolation stage of the SST. The isolation stage consists of a high voltage DC-DC converter, which transfers power across the isolation barrier of the SST. This stage is evaluated in the laboratory with special attention being paid to the efficiency of the converter. The second aspect that this thesis addresses is the output stage of the SST, namely a three phase inverter. The discussion of the output stage focuses on the losses occurring in the inverter. The switching device losses are calculated by means of an adapted numerical method as opposed to using conventional analytical methods. The presented numerical method is compared to the existing analytical method and the findings are discussed. A double loop control strategy is implemented for the output stage inverter. The inner current loop utilizes a predictive control strategy. The control analysis of the double loop controller is discussed and evaluated in the laboratory. All the converters that are discussed in this thesis are evaluated in the laboratory and the relevant measurements are included.
AFRIKAANSE OPSOMMING: Die doel van ’n drywingselektroniese transformator (DET) is om drywingselektroniese omsetters te gebruik om die werking van die konvensionele distribusietransformator na te boots. Hierdie drywingselektroniese omsetters word voorgestel ten einde die nadele van die konvensionele distribusietransformator te bowe te kom. Die voordele van ’n DET sluit in: feitlik perfekte regulering van spanning en harmoniese isolasie tussen die primˆere en sekondˆere windings van die transformator. Hierdie tesis bespreek die ontwerp en ontwikkeling van die verskillende omsetters in ’n drywingselektroniese transformator (DET). ’n Prototipe modulˆere rug-aan-rug-omsetter word ontwikkel vir die intree- en isolasiefase van die DET. Die isolasiefase bestaan uit ’n hoogspanning- GS-GS omsetter, wat drywing oor die isolasiegrens van die DET heen oordra. Hierdie omsetter word in die laboratorium ge¨evalueer met besondere aandag aan die doeltreffendheid van die omsetter. Die tweede aspek waarna in hierdie tesis gekyk word, is die uittreefase van die DET, naamlik ’n driefaseomsetter. Die bespreking van die uittreefase fokus egter op die verliese wat in die omsetter voorkom. Die verliese van die skakelaars word bereken deur middel van ’n aangepaste numeriese metode teenoor die gebruik van konvensionele analitiese metodes. Die numeriese metode wat aangebied word, word vergelyk met die bestaande analitiese metode en die bevindings word bespreek. ’n Dubbellus-beheerstrategie word vir die uittreefase-omsetter ge¨ımplementeer. Die binneste stroomlus word ge¨ımplementeer deur van ’n voorspelbare beheerstrategie gebruik te maak. Die beheeranalise van die dubbellusbeheerder word bespreek en in die laboratorium ge¨evalueer. Al die omsetters wat in hierdie tesis bespreek word, word in die laboratorium ge¨evalueer en die relevante metings word ingesluit.
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"A DC-DC Multiport Converter Based Solid State Transformer Integrating Distributed Generation and Storage." Doctoral diss., 2011. http://hdl.handle.net/2286/R.I.9346.

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abstract: The development of a Solid State Transformer (SST) that incorporates a DC-DC multiport converter to integrate both photovoltaic (PV) power generation and battery energy storage is presented in this dissertation. The DC-DC stage is based on a quad-active-bridge (QAB) converter which not only provides isolation for the load, but also for the PV and storage. The AC-DC stage is implemented with a pulse-width-modulated (PWM) single phase rectifier. A unified gyrator-based average model is developed for a general multi-active-bridge (MAB) converter controlled through phase-shift modulation (PSM). Expressions to determine the power rating of the MAB ports are also derived. The developed gyrator-based average model is applied to the QAB converter for faster simulations of the proposed SST during the control design process as well for deriving the state-space representation of the plant. Both linear quadratic regulator (LQR) and single-input-single-output (SISO) types of controllers are designed for the DC-DC stage. A novel technique that complements the SISO controller by taking into account the cross-coupling characteristics of the QAB converter is also presented herein. Cascaded SISO controllers are designed for the AC-DC stage. The QAB demanded power is calculated at the QAB controls and then fed into the rectifier controls in order to minimize the effect of the interaction between the two SST stages. The dynamic performance of the designed control loops based on the proposed control strategies are verified through extensive simulation of the SST average and switching models. The experimental results presented herein show that the transient responses for each control strategy match those from the simulations results thus validating them.
Dissertation/Thesis
Ph.D. Electrical Engineering 2011
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Book chapters on the topic "Solid-state transformer (SST)"

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Khare, Bharat Bhushan, Rajeev Shankar Pathak, Sanjeev Sharma, and Vinod Kumar Singh. "Review on the Development of Solid State Transformer." In Advances in Wireless Technologies and Telecommunication, 119–26. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-7611-3.ch010.

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According to future renewable electric energy distribution and management (FREEDM) system, solid state transformers play an important role in smart grid technologies. They have several advantages over conventional transformers such as bi-directional power flow, light in weight, compact size, etc. They also compensate the environmental issues which are created due to transformer oil. Because of various advantages over traditional transformer, SST is preferred widely at the present time. So in this chapter, the various architectures, needs, and applications of solid state transformers are discussed. The global market of SST has continuously improved because it has several applications and benefits.
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Conference papers on the topic "Solid-state transformer (SST)"

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TAO, Qian, Jianjun MA, Miao ZHU, Shuli WEN, Qing DUAN, and Guanglin SHA. "Virtual Transformer Operation of Solid State Transformer (SST)." In IECON 2020 - 46th Annual Conference of the IEEE Industrial Electronics Society. IEEE, 2020. http://dx.doi.org/10.1109/iecon43393.2020.9254936.

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Alam, Kazi Saiful, Lew Andrew R. Tria, Daming Zhang, and M. F. Rahman. "Design and comprehensive modelling of solid-state transformer(SST) based substation." In 2016 IEEE International Conference on Power System Technology (POWERCON). IEEE, 2016. http://dx.doi.org/10.1109/powercon.2016.7753914.

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Parseh, Nasroddin, and Mohammad Mohammadi. "Solid State Transformer (SST) interfaced Doubly Fed Induction Generator (DFIG) wind turbine." In 2017 Iranian Conference on Electrical Engineering (ICEE). IEEE, 2017. http://dx.doi.org/10.1109/iraniancee.2017.7985202.

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Rajendran, Sanjay, Soumik Sen, Liqi Zhang, Zhicheng Guo, Qingyun Huang, and Alex Q. Huang. "500kVA Hybrid Solid State Transformer (HSST): Design and Implementation of the SST." In 2020 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2020. http://dx.doi.org/10.1109/ecce44975.2020.9235804.

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Rajak, Rahul Kumar, and Deepak Kumar. "Integrating Source, Storage and Load with Different Topology of SST (Solid State Transformer)." In 2018 International conference on computation of power, energy, Information and Communication (ICCPEIC). IEEE, 2018. http://dx.doi.org/10.1109/iccpeic.2018.8525220.

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Rajendran, Sanjay, Zhicheng Guo, and Alex Qin Huang. "A Hybrid Solid State Transformer (HSST) based on Two-Stage Medium Voltage SST." In IECON 2022 – 48th Annual Conference of the IEEE Industrial Electronics Society. IEEE, 2022. http://dx.doi.org/10.1109/iecon49645.2022.9968847.

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Hambridge, Sarah, Alex Q. Huang, and Ruiyang Yu. "Solid State Transformer (SST) as an energy router: Economic dispatch based energy routing strategy." In 2015 IEEE Energy Conversion Congress and Exposition. IEEE, 2015. http://dx.doi.org/10.1109/ecce.2015.7309991.

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Faiad, Azza A., Osama M. Hebala, Mostafa S. Hamad, and Ayman S. Abdel-Khalik. "A Modular Multilevel Converter Based Solid State Transformer (MMC-SST) for High Power Wind Generators." In 2021 22nd International Middle East Power Systems Conference (MEPCON). IEEE, 2021. http://dx.doi.org/10.1109/mepcon50283.2021.9686211.

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Anurag, Anup, Sayan Acharya, Nithin Kolli, Subhashish Bhattacharya, and Todd R. Weatherford. "Protection Scheme for a Medium Voltage Mobile Utility Support Equipment based Solid State Transformer (MUSE-SST)." In IECON 2020 - 46th Annual Conference of the IEEE Industrial Electronics Society. IEEE, 2020. http://dx.doi.org/10.1109/iecon43393.2020.9254954.

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Pool-Mazun, Erick I., Prasad Enjeti, Gerardo Escobar, and Ira Pitel. "An Architecture for Level-3 EV Battery Charger Stations Using Integrated Solid State Transformer (I-SST)." In 2020 22nd European Conference on Power Electronics and Applications (EPE'20 ECCE Europe). IEEE, 2020. http://dx.doi.org/10.23919/epe20ecceeurope43536.2020.9215842.

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Reports on the topic "Solid-state transformer (SST)"

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BHATTACHARYA, SUBHASHISH. Flexible Large Power Solid State Transformer (FLP-SST). Office of Scientific and Technical Information (OSTI), February 2019. http://dx.doi.org/10.2172/1647580.

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