Active magnetizing current splitting ZVS modulation of a 7 kV/400 V DC transformer

T Guillod, D Rothmund, JW Kolar - IEEE Transactions on Power …, 2019 - ieeexplore.ieee.org
The LLC series resonant converter (SRC) is one of the most popular galvanically isolated dc–
dc converters since it provides zero voltage switching (ZVS), reduces rms currents, and …

Dielectric losses in dry-type insulation of medium-voltage power electronic converters

T Guillod, R Faerber, D Rothmund… - IEEE Journal of …, 2019 - ieeexplore.ieee.org
Newly available medium-voltage (MV) silicon carbide (SiC) transistors are setting new limits
for the design space of MV converters. Unprecedented blocking voltages, higher switching …

Stable and passive high-power dual active bridge converters interfacing MVDC grids

FD Freijedo, E Rodriguez-Diaz… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
Dual active bridge (DAB) is a topology that is receiving more and more attention as a
potential solution to interface dc grids of different voltage levels. From a system level, the …

Optimal triple-phase-shift controller design of isolated bidirectional DC-DC converter based on ant colony algorithm and BP neural network

H Zhang, X Tong, J Yin - … 2017-43rd Annual Conference of the …, 2017 - ieeexplore.ieee.org
This paper takes the isolated bidirectional dual active bridge (DAB) dc-dc converter with
triple-phase-shift (TPS) control as the research object. A novel controller design method …

Highly isolated power supply design for gate drivers of the solid state transformer

J Kim, HS Kim, Y Cho, JY Kim - 2017 Asian Conference on …, 2017 - ieeexplore.ieee.org
This paper describes a high voltage isolation over 30kV gate driver power supply for solid-
state-transformers (SSTs). In order to implement this, several dc-dc converter topologies with …

Evaluation of high-voltage 4H-SiC gate turn-off thyristor for pulsed power application

S Liang, J Guo, H Liu, J Wang - 2021 IEEE 1st International …, 2021 - ieeexplore.ieee.org
High voltage power semiconductor devices with ultra-fast turn-on speed have always been
highly desirable for advanced pulsed power applications. In recent years, the wide band gap …

Investigation on 4H-SiC gate turn-off thyristor with direct carrier extraction access to drift region for power conversion applications

S Liang, J Wang, F Fang, H Liu… - … Science and Technology, 2020 - iopscience.iop.org
Abstract 4H-SiC gate turn-off (GTO) thyristor offers extraordinary advantages over its
counterparts in handling ultra-high voltage electric power conversion applications because …

[PDF][PDF] Medium Voltage Solid-State Transformer: An IEC60076-3 based design

B van Dam - 2023 - research.tue.nl
Today's electricity grid is based on a strong hierarchical structure. Large power plants
generate power at high voltages for transportation over long distances via the HV-grid. High …

A Current Optimization Strategy for a Hybrid DC Transformer with MMC Structure and Series-connected Switches

X Zhu, R Li, W Chen, L Cao… - 2022 IEEE Transportation …, 2022 - ieeexplore.ieee.org
A DC transformer utilizing modular multilevel converter (MMC) structure and series-
connected switches incurs high current stress and results in low system efficiency under low …

Automatic tuning of the switching frequency for efficiency maximization in an ESS-PV hybrid PCS

S Han, S Prykhodko, J Park - Journal of Renewable and Sustainable …, 2017 - pubs.aip.org
An automatic switching frequency tuning algorithm (ASTA) for a real-time condition is
proposed. The primary aim is to maximize the power efficiency of a power electronic system …