Results 51 to 60 of about 16,216,609 (215)

Improving fault ride-through capability of DFIG based wind generators by using bridge-type superconducting fault current limiter

, 2015
This paper proposes series connection of a diode bridge-type superconducting fault current limiter (SFCL) with rotor side converter (RSC) of a double fed induction generator (DFIG) based wind turbine.
Ahmed M. A. Haidar, Hossain, M. S. A., K. M. Muttaqi, M. Tarafdar Hagh, Hagh, M. Tarafdar, Sutanto, D., D. Sutanto, Muttaqi, K. M., M. S. A. Hossain, Haidar, Ahmed M. A.   +9 more
core   +1 more source

DC fault ride-through capability and STATCOM operation of a HVDC hybrid voltage source converter [PDF]

, 2014
HVDC transmission systems are becoming increasingly popular when compared to conventional AC transmission methods. HVDC voltage source converters (VSC) can offer advantages over traditional HVDC current source converter topologies; as such, it is ...
Farr, Ewan, Watson, Alan James, Wheeler, Patrick, Clare, Jon C., Feldman, Ralph   +4 more
core   +1 more source

Fault detection and location in DC systems from initial di/dt measurement [PDF]

, 2012
The use of DC for primary power distribution has the potential to bring significant design, cost and efficiency benefits to a range of power transmission and distribution applications.
Burt, Graeme, Norman, Patrick, Galloway, Stuart, Fletcher, Steven   +3 more
core   +3 more sources

Review of the Configuration and Transient Stability of Large-Scale Renewable Energy Generation Through Hybrid DC Transmission

CES Transactions on Electrical Machines and Systems
Based on the complementary advantages of Line Commutated Converter (LCC) and Modular Multilevel Converter (MMC) in power grid applications, there are two types of hybrid DC system topologies: one is the parallel connection of LCC converter stations and ...
Xinshou Tian, Yongning Chi, Longxue Li, Hongzhi Liu   +3 more
doaj   +1 more source

Stair‐Climbing Wheelchairs for Enhanced Mobility: A Comprehensive Review of Fundamental Mechanisms, Design Concepts, and Performance Analysis

Journal of Field Robotics, EarlyView.
ABSTRACT People with physical disabilities face significant mobility challenges while climbing uneven surfaces and staircases. In these circumstances, traditional wheelchairs do not provide stable, safely controlled mobility, underscoring the importance of building superior stair‐climbing wheelchairs for both medical and infrastructure purposes.
Gopisetti Manikanta, S. M. Abhinandan, Anand Reddy, G. Chandana, Divya, P. Anil Kumar, Ch. Venkata Rao, Ashish Garg, Ravi C. Soni, Jogendra Kumar, Bhargav Akkinepally   +10 more
wiley   +1 more source

A Novel DC Fault Ride Through Control Methodology for Hybrid Modular Multilevel Converters in HVDC Systems

, 2020
International audienceModular Multilevel Converter (MMC) is an established technology for HVDC or Multi-Terminal DC (MTDC) systems, due to its advantages over classical Voltage Source Converters (VSCs) such as two or three level VSCs.
Gruson, Franois, Guillaud, Xavier, Colas, Frederic, Shahriari, Ejlal, Vermeersch, Pierre, Delarue, Philippe   +5 more
core   +1 more source

Full-bridge MMC DC fault ride-through and STATCOM operation in multi-terminal HVDC grids [PDF]

, 2017
This paper investigates a control structure to enhance the DC fault ride-through capability of a full-bridge modular multilevel converter (MMC) station, while ensuring a stable controlled operation as a STATCOM during DC faults without the need for fault
Bauer, P., Tsolaridis, Georgios, Bauer, Pavol, P. Bauer, Teodorescu, R., Teodorescu, Remus; id_orcid, R. Teodorescu, G. Tsolaridis, Kontos, E., Tsolaridis, G., E. Kontos   +10 more
core   +2 more sources

DC Fault Analysis of Modular DC/DC Converter Employing a New Submodule With Damping-Resistor

IEEE Access, 2018
DC transformer is the key equipment to interconnect the high voltage dc systems with different voltage levels and build dc grid. Compared with the dc/ac/dc converter based on modular multilevel converter, the non-isolated modular dc/dc converter (MDCC ...
Hongcheng You, Xu Cai, Liangzhong Yao, Yuanzhi Cao, Zhibing Wang   +4 more
doaj   +1 more source

Controllable DC‐link fault current limiter augmentation with DC chopper to improve fault ride‐through of DFIG

IET Renewable Power Generation, 2017
Doubly fed induction generator (DFIG) based wind turbines are sensitive to grid faults due to utilising small‐scale rotor side converter (RSC). The application of crowbar protection to improve the fault ride‐through (FRT) capability of the DFIG converts it to a squirrel cage induction generator, which makes it difficult to comply with grid codes.
Amin Jalilian, Seyed Behzad Naderi, Michael Negnevitsky, Mehrdad Tarafdar Hagh, Kashem M. Muttaqi   +4 more
openaire   +3 more sources

Zero‐Current Switching Based Model Predictive Control of a Double‐Extended Overlapped Alternate Arm Converter Used in the VSC–HVDC System

High Voltage, EarlyView.
ABSTRACT The alternate arm converter (AAC) is one of the most efficient multilevel topologies based on voltage source converters (VSCs), which has recently gained attention in various applications, particularly in high voltage direct current (HVDC) systems.
Ehsan Akbari, Milad Samady Shadlu
wiley   +1 more source