Results 81 to 90 of about 466 (144)

DC Inclined-Plane Tracking and Erosion Test of Insulating Materials [PDF]

open access: yes, 2015
The paper reviews previous work on the DC inclined plane test and suggests equivalent DC voltage levels in parallel to AC voltage in the ASTM inclined plane tracking and erosion test.
Cherney, E. A.   +8 more
core   +1 more source

Research, Development and Application of Hybrid Model of Back-to-Back HVDC Link [PDF]

open access: yes, 2020
Recent hybrid simulators (or co-simulators) of the electric power system are focused on scientific and research features to propose and develop novel and more accurate simulators. The present paper demonstrates one more hybrid modelling approach based on
Aboelsaud Raef, Siam Sayed Ahmed   +14 more
core   +1 more source

Operation and transient performance of a four-terminal MMC based DC grid implementing high power mechanical DC circuit breaker

open access: yesThe Journal of Engineering, 2019
Recently, there has been significant interest in developing the modular multilevel converter (MMC) based DC grids in the power industry. However, the immature DC circuit breaker (DCCB) technology hampers the development of DC grids in overhead lines ...
Binye Ni   +4 more
doaj   +1 more source

Simulation‐Based Material Design for HVDC Cable Accessories

open access: yesHigh Voltage, Volume 11, Issue 1, Page 25-36, February 2026.
ABSTRACT The worldwide increasing demand for electricity, coupled with the need for more reliable infrastructures and more interconnected networks, has put forward high voltage direct current (HVDC) technologies for energy transmissions. Questions still arise as regards synthetic insulation for cable systems and accessories, as it remains one of the ...
Thi Thu Nga Vu   +2 more
wiley   +1 more source

A modified control strategy for LCC with IGCT‐based full‐bridge submodules to solve the commutation failure issues

open access: yesIET Power Electronics
To solve the commutation failure (CF) issues in high voltage direct current (HVDC) transmission systems based on line commutated converter (LCC), this paper proposes a hybrid solution combining the LCC inverter with the continuously controlled IGCT‐based
Yindi Liu   +3 more
doaj   +1 more source

Thermal management for high power space platform systems [PDF]

open access: yes
With future spacecraft power requirements expected to be in the order of 100 to 250 kilowatts and orbital lifetimes in the order of five to ten years, new approaches and concepts will be required that can efficiently and cost effectively provide the ...
Gualdoni, R. A.
core   +1 more source

The direct connection of generators to HVdc convertors with an emphasis on series excitation. [PDF]

open access: yes, 1994
The underlying theme of this thesis has been the investigation of the direct connection of generators to HVdc converters. The first ever direct connection harmonic test measurements are presented.
Macdonald, Stuart James
core   +1 more source

Fault response comparison of LCC–MMC hybrid topologies and conventional HVDC topology

open access: yesThe Journal of Engineering, 2018
The modular multilevel converter (MMC) can be used to upgrade conventional line commutated converter-based HVDC systems (LCC-HVDC), construct the hybrid topologies of LCC and MMC to acquire better fault responses.
Boliang Lou   +4 more
doaj   +1 more source

Design and validation of a novel semiconductor area optimised 3300 V SiC half bridge for MMC

open access: yesIET Power Electronics
This article presents the design and experimental validation of a novel semiconductor area optimised 3300 V half bridge with Silicon Carbide (SiC) MOSFETs for HVDC converters. Based on a loss simulation, the problem statement is provided. On this results,
Lukas Bergmann, Mark‐M. Bakran
doaj   +1 more source

Loss reduction analysis and control of AC-voltage-boosted FBSM MMC by injecting second harmonic circulating current

open access: yesThe Journal of Engineering, 2019
Reducing the power loss and handling short-circuit faults in HVDC systems are crucial for economical and reliable operation of modular multilevel converters (MMC). This paper proposes a loss reduction method for AC voltage-boosted FBSM-MMC by controlling
Muchao Xiang, Jiabing Hu, Zhiyuan He
doaj   +1 more source

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