Results 121 to 130 of about 4,243 (258)

Fault blocking converters for HVDC transmission : a transient behaviour comparison [PDF]

open access: yes, 2018
A thorough comparison of the transient behaviours of two state-of-the-art converters suitable for HVDC transmission is presented. The Alternate Arm and Mixed-Cell Modular Multilevel Converter topologies both have DC fault blocking capability and are ...
Finney, S.   +3 more
core  

Exploiting Redundant Energy of MMC–HVDC to Enhance Frequency Response of Low Inertia AC Grid

open access: yesIEEE Access, 2019
This paper presents a grid frequency responsive inertial control for the modular multilevel converter-high voltage DC (MMC-HVDC) using the MMC design attribute, i.e. submodule redundancy for high reliability.
Heejin Kim   +7 more
doaj   +1 more source

Assessment of Appropriate MMC Topology Considering DC Fault Handling Performance of Fault Protection Devices

open access: yesApplied Sciences, 2018
The eventual goal of high-voltage direct-voltage (HVDC) systems is to implement HVDC grids. The modular multilevel converter (MMC) has been identified as the best candidate for the realization of an HVDC grid by eliminating the shortcomings of ...
Ho-Yun Lee   +3 more
doaj   +1 more source

Stability and interaction analysis in islanded power systems including VSC-HVDC and LCC-HVDC power converters [PDF]

open access: yes, 2018
Islanded power systems are often connected to larger mainland power systems using HVDC cables. These interconnections are used to import power at lower cost compared to local generation and improve the security of supply.
Cheah Mañé, Marc   +9 more
core  

Coupling characteristics between MMC-HVDC and AC transmission lines on the same tower and their impact on protective relaying

open access: yesInternational Journal of Electrical Power & Energy Systems
Significant coupling exists between DC and AC lines erected on the same tower or sharing transmission corridors. Electromagnetic and electrostatic coupling between DC and AC lines are investigated based on ± 500 kV MMC-HVDC and 500 kV double-circuit AC ...
Wenbo Wang   +5 more
doaj   +1 more source

Adiabatic DC-AC Power Converter with 99% Efficiency [PDF]

open access: yes, 2016
This paper describes a novel approach to building a high efficiency and dimensionally compact power converter / inverter. A prototype was built for the Google / IEEE Little Box competition.
Baghdadi, Mehdi
core  

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