A Fault Tolerant Operation Technique for STATCOMs based on Star-Connected Cascaded H-Bridges Multilevel Converter
Chia-Tse Lee ; Hsin-Chih Chen ; Ping-Heng Wu ; Ching-Wei Wang ; Ching-Hsiang Yang ; Po-Tai Cheng
cascade converters
,
fault-tolerant control
,
neutral shift
,
STATCOM
,
voltage balancing control
The PWM converter is like a current-control voltage source, and MMCC-SSBC converter averagely separates the required output voltage into…
A Gallium Nitride Device based Switched Capacitor Multilevel Converter for UPS Applications
Mohammed Alsolami ; Mark Scott ; Jin Wang
UPS
,
Gan devices
,
Switched capacitor
,
Multilevel
,
Multiport
,
Converter
A single phase multilevel inverter, three-port, switched capacitor circuit based on gallium nitride devices for UPS applications is proposed in…
A New Hybrid Power Electronics On-Load Tap Changer for Power Transformer
OLTC
,
transformer
,
tap changer
,
IGBT
,
SCR
Traditional power transformer on-load tap changer (OLTC) works with mechanical switches have issues of electrical contact and mechanical…
A Novel Control Strategy of a Modular Multilevel Converter (MMC) based VSC-HVDC Transmission System
Shenghui Cui ; Jae-Jung Jung ; Younggi Lee ; Seung-Ki Sul
modular multilevel converter (MMC)
,
VSC-HVDC
,
power flow
,
decoupling
In the conventional control strategy of the VSC-HVDC system based on the MMC, direct modulation was employed and the terminal behavior of…
An Evaluation of Selected Solid-State Transformer Topologies for Electric Distribution Systems
Roderick J. Garcia Montoya ; Adithya Mallela ; Juan Carlos Balda
Solid-state transformer
,
high-frequency transformer design
,
leakage inductance
,
DC-DC converters
,
boost converter
The main goal of this paper is to evaluate selected SST topologies including a new SST topology based on boost converters in order to…
Auxiliary Power Supply for Solid State Transformer with Ultra High Voltage Capacitive Driving
Sheng Zong ; Qianlai Zhu ; Wensong Yu ; Alex Q. Huang
Auxiliary Power Supply
,
High Voltage
,
Capacitive Driving
,
Solid state transformer
,
ISOP
This paper proposes an auxiliary power supply (APS) for solid state transformers (SST), which is able to handle extremely high input voltage…
Double-Clamp Cell with Reduced Losses for DC Short-Circuit Current Limitation in MMC
Alberto Zapico ; Mario López ; Fernando Briz ; David Reigosa
Modular Multilevel Converter
,
fault tolerant
,
ride through
MMC is a promising technology for medium-high voltage DC/AC multilevel converters, which is adequate for HVDC transmission systems. Among the…
Operation and Control of MMCs using Cells with Power Transfer Capability
Fernando Briz ; Mario López ; Alberto Zapico ; Alberto Rodríguez ; David Díaz-Reigosa
Modular Multilevel Converter
,
Medium Voltage Power Converter
,
Solid State Transformer
Cells in Conventional Modular Multilevel Converters (MMC) designs use a capacitor for energy storage. This means that the net power balance…
Start-Up Scheme for Solid State Transformers Connected to Medium Voltage Grids
Krishna Mainali ; Sachin Madhusoodhanan ; Awneesh Tripathi ; Dhaval Patel ; Subhashish Bhattacharya
Solid State Transformers
,
Medium voltage
The development of the high voltage wideband gap semiconductor SiC power devices have enabled the solid state transformer (SST) technology…
