Zobrazeno 1 - 10
of 494
pro vyhledávání: '"Ho-Yun Lee"'
Publikováno v:
IEEE Access, Vol 7, Pp 7194-7205 (2019)
Growing urbanization coupled with increased power demands have led to increasing use of mixed power transmission lines with sections of overhead lines (OHL) and underground cables. Due to differences in surge impedance of cables and OHL, voltage surg
Externí odkaz:
https://doaj.org/article/7c0d4dca6a8c4913abac3751770e9739
Publikováno v:
The Journal of Engineering (2019)
The key obstacle in implementing high-voltage direct current (HVDC) grid, which is considered as the future of power grid, is the absence of effective DC circuit breaker (DCCB). At present, HVDC grid could be based on half-bridge (HB) or full-bridge
Externí odkaz:
https://doaj.org/article/e8e02dd2a34544e4b189be308a2e528f
Publikováno v:
The Journal of Engineering (2019)
The black-box arc model is known to be a useful technique to simulate dynamic arc-circuit interaction by reflecting arc characteristics. Existing researches have shown that the black-box model has been widely used to analyse the ac arc characteristic
Externí odkaz:
https://doaj.org/article/e3046d217f164efdb2551c80aa3bf901
Publikováno v:
Advances in Materials Science and Engineering, Vol 2019 (2019)
In this study, we fabricated thin-film resistors using CuMn and yttrium targets by DC/RF magnetron cosputtering. CuMnY-resistive thin films were deposited onto glass and Al2O3 substrates. The electrical properties and microstructures of CuMn alloy fi
Externí odkaz:
https://doaj.org/article/06de954ddadc4c3cbe8b569f015ee05b
Publikováno v:
Energies, Vol 12, Iss 21, p 4217 (2019)
Many geographical constraints and aesthetic concerns necessitate the partial use of cable sections in the High Voltage DC (HVDC) transmission line, resulting in a mixed transmission line. The overhead sections of mixed lines are exposed to lightning
Externí odkaz:
https://doaj.org/article/886d2f2f819a47e1a2495afbbaaf448a
Publikováno v:
Energies, Vol 12, Iss 21, p 4161 (2019)
The current and voltage in High Voltage DC (HVDC) line is not pure DC but contain superimposed ripple components. The current ripple in core of HVDC cable magnetically induces a voltage in the sheath, whereas the voltage ripple causes the flow of cha
Externí odkaz:
https://doaj.org/article/038a2eebcc454f3e84d732b18f51fb3c
Publikováno v:
Energies, Vol 12, Iss 10, p 1837 (2019)
The half bridge (HB) modular multilevel converter (MMC) technology is considered a breakthrough to mitigate the shortcomings of the conventional voltage source converter (VSC) in high-voltage direct-current (HVDC) grid application. However, interrupt
Externí odkaz:
https://doaj.org/article/5295ee0d09204cc6aa949109c9b86d00
Publikováno v:
Applied Sciences, Vol 8, Iss 10, p 1834 (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 conven
Externí odkaz:
https://doaj.org/article/07f265ee0d254c4096ad993c040adbf8
Autor:
Ho Yun Lee1 hoyun1004@gmail.com, Da Jung Jung2
Publikováno v:
Journal of Audiology & Otology. Oct2023, Vol. 27 Issue 4, p181-192. 12p.
Publikováno v:
Frontiers in Neurology; 2024, p01-06, 6p