State of the art of solid-state transformers: Advanced topologies, implementation issues, recent progress and improvements

MA Hannan, PJ Ker, MSH Lipu, ZH Choi… - Ieee …, 2020 - ieeexplore.ieee.org
Solid-state transformer (SST) is an emerging technology integrating with a transformer
power electronics converters and control circuitry. This paper comprehensively reviews the …

Comprehensive Review of Solid State Transformers in the Distribution System: From High Voltage Power Components to the Field Application

A Rehman, M Imran-Daud, SK Haider, AU Rehman… - Symmetry, 2022 - mdpi.com
This paper presents a systematical and progressive appraisal of the technology since the
inception of AC-AC conversion, which is seen to be an indispensable and vital for the …

Soft-start procedure for a three-stage smart transformer based on dual-active bridge and cascaded H-bridge converters

S Pugliese, G Buticchi, RA Mastromauro… - … on Power Electronics, 2020 - ieeexplore.ieee.org
Power electronics based three-stage smart transformers (STs) can be seriously damaged by
inrush currents and overvoltages during the start-up phase if the control of the stages is not …

Partial startup scheme for smart transformer in meshed hybrid islanded grid operation

D Das, C Kumar - IEEE Transactions on Industry Applications, 2021 - ieeexplore.ieee.org
Smart transformer (ST)-based low-voltage (LV) meshed hybrid grids provide various power
flow paths and ensure continuous power supply to loads. The meshed hybrid microgrid can …

Generalized Model Predictive Control Method for Single-Phase N-Level Flying Capacitor Multilevel Rectifiers for Solid State Transformer

SH Kim, RY Kim, SI Kim - IEEE Transactions on Industry …, 2019 - ieeexplore.ieee.org
This paper introduces a generalized control method based on the finite control set-model
predictive control for a single-phase N-level flying capacitor multilevel rectifier used for solid …

A Three-Phase Five-Level Unidirectional Rectifier With Reduced Components

W Zhang, X Zhu, H Wang, Q Li, X Deng… - … on Power Electronics, 2023 - ieeexplore.ieee.org
Owing to the advantages of simple structure, higher power density, and reliability,
unidirectional five-level rectifiers are attractive solutions for high-power medium-voltage …

A soft start approach of solid-state transformer

Y Jiang, X Ren, H Weng, Z Li… - 2021 IEEE 1st International …, 2021 - ieeexplore.ieee.org
The Solid-State Transformer (SST) is one of the most important devices for the future grid. To
begin with, this paper discusses the impact of auxiliary power supply (APS) on the start-up …

Soft Start-Up Technique for Solid State Transformer

H Patel, S Chahar, S Bhawal… - 2024 IEEE Texas Power …, 2024 - ieeexplore.ieee.org
Power electronics improvements make Solid State Transformer (SST) technology an
attractive choice for direct integration of MVAC grid with LVDC/LVAC. However, during the …

Frequency converter with reduced pre-charging time

A Hensler, P Oschmann - US Patent 11,431,240, 2022 - Google Patents
(57) ABSTRACT A frequency converter includes a rectifier on an input side and a support
capacitor downstream of the rectifier. Input side phases of the rectifier feed the backup …

Study of Some Operational Degrees of Freedom for Cascaded AC-DC Converters in Solid State Transformer

F Cui, A Sethupandi, G Farivar… - … Conference on Power …, 2019 - ieeexplore.ieee.org
Cascaded ac-dc converter is widely used in the first stage of solid state transformer (SST).
The study of various operation modes of the cascaded ac-dc converter will help to …