Zobrazeno 1 - 10
of 160
pro vyhledávání: '"Yichao Sun"'
Publikováno v:
Nanomaterials, Vol 14, Iss 17, p 1423 (2024)
An accurate description of short-range interactions among atoms is crucial for simulating irradiation effects in applications related to ion modification techniques. A smooth integration of the Ziegler–Biersack–Littmark (ZBL) potential with the a
Externí odkaz:
https://doaj.org/article/79d4e5a883b645d982495c43bde1f93c
Publikováno v:
IET Power Electronics, Vol 15, Iss 14, Pp 1583-1595 (2022)
Abstract This paper presents a hierarchical voltage balance control method for a hybrid modular multi‐level converter based on half‐bridge submodule and dual‐capacitor submodule. This voltage balancing method reduces the control complexity of t
Externí odkaz:
https://doaj.org/article/af63ef6f3acf4f38844abc5315c146ef
A pre-charging strategy based on composite frequency control for a modular multilevel DC transformer
Publikováno v:
Energy Reports, Vol 8, Iss , Pp 506-517 (2022)
Modular multilevel DC transformers(MMDCTs) have become a research focus in DC grids with different voltage levels based on their advantages of strong expansibility and high voltage levels. It is necessary to apply pre-charging control to avoid inrush
Externí odkaz:
https://doaj.org/article/602463792e464da58bdd0f690d97ed59
Publikováno v:
Energy Reports, Vol 7, Iss , Pp 378-387 (2021)
Direct current (DC) solid-state transformers based on modular multilevel converters (MMC-DCSSTs) have wide application prospects in DC transmission and distribution systems. However, after starting such a system, the normal operation of its MMC-DCSST
Externí odkaz:
https://doaj.org/article/6f57f7ab7515485eba3b83669de3d21d
Publikováno v:
Energies, Vol 16, Iss 12, p 4789 (2023)
This paper proposes an adaptive strategy of co-regulating the three parameters—P/ω droop coefficient, virtual inertia, and damping coefficient—for the virtual synchronous generator (VSG). This approach is able to solve the uncoordinated performa
Externí odkaz:
https://doaj.org/article/0b9de684ef09450198cebc9b623fcb29
Publikováno v:
IEEE Access, Vol 8, Pp 31693-31709 (2020)
Conventional single-cell dual buck inverters present high reliability, however they cannot be directly used in high voltage applications, because of the limited voltage rating of commercial switching devices. Therefore, a novel modular multilevel dua
Externí odkaz:
https://doaj.org/article/2b2d3d4a82b84949a05603e20f2d97a8
Publikováno v:
IEEE Access, Vol 8, Pp 153742-153755 (2020)
The new-type synchronous condenser uses the uncontrollable and irreversible freewheeling grid-connection mode during the start-up process, so that considerable rates of grid-connection failure could be observed in case of strict grid-connection crite
Externí odkaz:
https://doaj.org/article/77be03422543410e9a448892871fac02
Publikováno v:
IEEE Access, Vol 8, Pp 182943-182958 (2020)
The modular multilevel DC transformer (MMDCT) is more likely to suffer from transient oscillation, which is caused by insufficient damping of the equivalent RLC circuit with smaller arm resistance and submodule capacitance and may threaten the system
Externí odkaz:
https://doaj.org/article/2168b5f81a974bd2a96f48542592cc7a
Publikováno v:
Buildings, Vol 12, Iss 1, p 52 (2022)
Building energy efficiency, which is critical in reducing environmental impact, has become one of the most important objectives of building designs. In order to precisely express the goals of building designs, and help decision makers estimate the ul
Externí odkaz:
https://doaj.org/article/8681356a511544538738fac9d84c5209
Publikováno v:
Animals, Vol 11, Iss 2, p 485 (2021)
Behavior analysis of wild felines has significance for the protection of a grassland ecological environment. Compared with human action recognition, fewer researchers have focused on feline behavior analysis. This paper proposes a novel two-stream ar
Externí odkaz:
https://doaj.org/article/282aab742fd848828f4af125e5ab47cd