Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 17 of 17 for “"Solid state transformer"”.
-
Reconfigurable multiport solid-state transformer for DC fast charging stations
This thesis presents a Solid-State Transformer (SST)-based Electric Vehicle (EV) fast charging station that enhances reliability and optimizes power distribution. Traditional SST-based stations rely on a shared DC bus, susceptible to faults that disrupt the entire system. The proposed system …
-
Planar transformer isolated DC-DC Converter for Solid-State Transformer
… has been increasing through the years. Solid state transformer (SST), which is typically formed by three stages, one being DC/AC inverter, which is controllable, one being medium-frequency transformer isolated converter and the other being AC/DC rectifier, has been developed quickly …
-
Investigation of a GaN-Based Power Supply Topology Utilizing Solid State Transformer for Low Power Applications
… isolated GaN AC/DC switching converter based on solid-state transformer configuration with a totem-pole power factor corrector (PFC) front-end, a half-bridge series-resonant converter (SRC) for power conversion, and a current-doubler rectifier (CDR) at its output. A new equivalent circuit model …
-
Modelling and real-time simulation of a modular bidirectional solid-state transformer for ultra-fast charging of electric vehicles
This thesis proposes a modular Solid-State Transformer (SST) system architecture to be directly interfacing with a three-phase MV utility network enabling high-power and ultra-fast charging capabilities for electric vehicles, with the capacity to incorporate energy storage systems at the MVDC-link. …
-
A Pseudo-Binary Cascaded H-bridge Converter for Solid-State Transformer Applications and Modulation Techniques for the Minimization of the Common-Mode Voltage
… (MV) grid, eliminating the line-frequency transformer and the bulky line cable requirements. Among these topologies, the cascaded H-bridge (CHB) has been extensively used in the industry for MV-high-power applications because of its cost and efficiency in this operation range. Thus, it is …
-
Application of power electronics to the distribution transformer
… the design and prototype construction of a novel Solid State Transformer (SST). Conventional distribution transformers are in many ways relics of turn-of-the-century technology. While efficient and inexpensive, their secondary voltage waveforms are tightly coupled to the applied primary voltage …
-
Stability design criteria and volt var control for distribution system with single phase solid state transformers
… Conventional single phase distribution transformers are replaced by solid state transformers (SST) in a distribution test system to investigate their interactive dynamics. Under certain circumstances, instabilities due to harmonic resonance are observed. A design criterion for solid …
-
Design, Modeling and Analysis of an AC-AC Dual Active Bridge Converter
<p>"The Solid-State Transformer (SST) is gaining attention as an alternative to conventional iron-core transformers in the power electronic community. The power industry's increasing demands for smaller size, higher efficiency, and greater energy density have made the SST an attractive option. …
-
High-Frequency Transformer Design for Solid-State Transformers in Electric Power Distribution Systems
… thesis is to present a high- or medium-frequency transformer design methodology for Solid-State Transformer (SST) applications. SSTs have been proposed as a replacement of the traditional 50/60 Hz transformer in applications demanding high-power density. Moreover, due to the high penetration of …
-
High-frequency Power Conversion for Medium Voltage Power Electronics Interfaces
… consumption can have a substantial impact. The solid-state transformer (SST) is a promising technique for medium voltage conversion that offers high-frequency operation, resulting in reduced volume and excellent insulation capabilities. Currently, the medium voltage transformer poses a challenge …
-
Design of a 405/430 kHz, 100 kW Transformer with Medium Voltage Insulation Sheets
… from this increased switching frequency is the transformer. The objective of this work is to design a >400 kHz, 100 kW transformer which will provide galvanic isolation in a Solid-State Transformer (SST) based PEBBs while maintaining high efficiency, high power density, and reduced size. This …
-
High Frequency Isolated Power Conversion from Medium Voltage AC to Low Voltage DC
… power conversion system which is also called solid state transformer is given including application, topology, device and magnetic transformer. Then developing trend of this research area is clearly shown following by research target. State of art wide band gap device including silicon carbide …
-
DCT Enabled smart consumer Grid Model
… order to achieve this goal, we proposed the DC Transformer (DCT) enabled consumer grid model. The DC Transformer has been regarded as one of the most emerging technologies and it has many advantages over the convectional low frequency AC transformers such as high power density in small area, …
-
Power electronic transformers for AC-AC and AC-DC conversion with reduced number of switches
… a novel reduced-switch Power Electronic Transformer is proposed for three-phase power conversion (three-phase AC to AC as well as three-phase AC to DC). The goal of this project is to reduce the weight and size of the power converter by replacing the low-frequency transformers with …
-
Topologies and control estrategies of multiport modular multinivel converters
… Flexible AC Transmission Systems (FACTS) and Solid State Transformers (SST) have the potential to cope with these challenges. Multilevel converters are well suited for medium-high voltage and power ranges which are required for electronic power converters connected to medium voltage electrical …
-
Topology and Control Investigation of Soft-Switching DC-DC Converters for DC Transformer (DCX) Applications
… systems (ESS), data center power supplies, and solid-state transformer (SST) systems, the fixed-ratio isolated DC-DC converter, namely the DC transformer (DCX), has gained significant popularity. Similar to the passive AC transformer, DCX can bidirectionally convey DC power with very high …