Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Yiyuan Zhou"'
Publikováno v:
International Journal of Electrical Power & Energy Systems, Vol 159, Iss , Pp 110010- (2024)
Recent years, there have been several high-frequency oscillation events in modular multilevel converter (MMC) based DC current projects. Considering the wideband oscillation characteristics of this issue, passive MMC impedance shaping methods are sup
Externí odkaz:
https://doaj.org/article/c4a2c1ca95234eb381f3ca39801abb3f
Publikováno v:
IET Power Electronics, Vol 17, Iss 1, Pp 25-37 (2024)
Abstract The problem of submodule switching frequency reduction in half‐bridge modular multilevel converters (HB‐MMCs) with capacitor voltage self‐balancing control is considered and explored in this paper. A selection principle of submodule sw
Externí odkaz:
https://doaj.org/article/a876213888b04f50a00e51cdc9ad7937
Autor:
Zhaoxun Liu, Liang Qin, Yiyuan Zhou, Xiao Lei, Cheng Huangfu, Shiqi Yang, Yun Hong, Kaipei Liu
Publikováno v:
IET Generation, Transmission & Distribution, Vol 17, Iss 2, Pp 307-323 (2023)
Abstract With the increasing proportion of renewable power generations in the power system, the power grid impedance may fluctuate greatly, and it is difficult for the virtual synchronous generator (VSG) with a single control structure to meet the st
Externí odkaz:
https://doaj.org/article/76b742e2a7f1496faa0a89ecfea18172
Publikováno v:
Energy Reports, Vol 8, Iss , Pp 153-163 (2022)
The existing photovoltaic frequency regulation strategies do not take into account the differences in the frequency regulation capability. So they cannot fully exploit the support capacity to the grid frequency. For the purpose of improving the contr
Externí odkaz:
https://doaj.org/article/6572b23dcab9463e915bd3e0c3cdfdbc
Publikováno v:
IET Electric Power Applications, Vol 16, Iss 9, Pp 985-995 (2022)
Abstract Oil‐immersed transformers play an important role in the stable operation of power systems. Aiming at the low accuracy of traditional transformer fault diagnosis methods, a transformer fault diagnosis method using an improved sparrow search
Externí odkaz:
https://doaj.org/article/b54ab3c7e7fe4ff3a6389737d58321e0
Publikováno v:
IET Image Processing, Vol 15, Iss 13, Pp 3347-3367 (2021)
Abstract Speckle reduction is still an intractable task in ultrasound imaging field. Ultrasound speckle is usually described as multiplicative noise with its statistics following a Rayleigh or Gaussian distribution. To employ these two distributions
Externí odkaz:
https://doaj.org/article/d5b19e55535246778835de859e680919
Publikováno v:
Frontiers in Energy Research, Vol 10 (2022)
To achieve carbon neutrality in electricity, measures such as increasing the share of renewable energy sources such as wind power and achieving more accurate and faster wind power forecasting, and low carbon retrofitting of thermal power units are al
Externí odkaz:
https://doaj.org/article/014282f0d83d4ae5bdad43f705005a7c
Publikováno v:
Frontiers in Energy Research, Vol 10 (2022)
Line loss prediction of ultrahigh voltage transmission lines is the key for ensuring the safe, reliable, and economical operation of the power system. However, the strong volatility of line loss brings challenges to the prediction of transmission lin
Externí odkaz:
https://doaj.org/article/5e649fa2b6a1483b9eb75154e6c23e31
Autor:
Qian Chen, Chencen Lai, Fa Chen, Yuanting Ding, Yiyuan Zhou, Songbai Su, Ruiqing Ni, Zhi Tang
Publikováno v:
Frontiers in Pharmacology, Vol 13 (2022)
Zinc is an essential trace element important for the physiological function of the central nervous system. The abnormal accumulation of zinc inside neurons may induce mitochondrial dysfunction and oxidative stress, which contribute to many brain dise
Externí odkaz:
https://doaj.org/article/6712dcef64854a3eb0f4af48b8553876
Publikováno v:
AIP Advances, Vol 11, Iss 11, Pp 115102-115102-6 (2021)
In order to study the arc process of the SF6 circuit breaker during the current breaking process, it is necessary to calculate the physical parameters of the arc discharge plasma. However, the calculation of plasma physical parameters is very difficu
Externí odkaz:
https://doaj.org/article/754e5c19dea54d9cb60d6ba188045df0