Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Jianguo Lyu"'
Publikováno v:
Energy Reports, Vol 8, Iss , Pp 327-343 (2022)
The Vienna rectifier is an excellent Power Factor Correction (PFC) AC–DC converter which has low Total Harmonic Distortion (THD) of input current, resistance to high-voltage, and high efficiency. Based on the structural characteristics of Vienna re
Externí odkaz:
https://doaj.org/article/9debe8012d854260b24d5cfdd151e8bf
Publikováno v:
Energy Reports, Vol 8, Iss , Pp 769-780 (2022)
In the DC power distribution systems, One-cycle control (OCC) based three-phase VIENNA rectifiers achieves high power factor (PF) easily. However, under unbalanced grid conditions, the fundamental phase shift between the input current and correspondi
Externí odkaz:
https://doaj.org/article/04fc50157f7542f794e7458ba11a8b61
Publikováno v:
Energy Reports, Vol 8, Iss , Pp 757-768 (2022)
In the photovoltaic grid-connected power generation system, when proportional resonant (PR) control is adopted for the grid-side inverter in the two-phase stationary coordinate (αβ), there is a coupling problem between active power (P) and reactive
Externí odkaz:
https://doaj.org/article/ade1ee93e936465b8387d3ad6d00a900
Publikováno v:
Energy Reports, Vol 7, Iss , Pp 257-266 (2021)
Due to the low output distortion and switch voltage stress, Vienna rectifiers have been widely utilized in high-power applications such as communication power supplies, wind power systems and electric vehicle charging piles. However, Vienna rectifier
Externí odkaz:
https://doaj.org/article/887d81f95ae54984abc21aaedac4a5b1
Publikováno v:
IET Power Electronics, Vol 14, Iss 3, Pp 626-639 (2021)
Abstract In order to concentrate the frequency spectrum of the output voltage and improve the quality of grid currents for the three‐level neutral point clamped inverter with the model predictive control, this paper proposes an optimal switching se
Externí odkaz:
https://doaj.org/article/cb700099af42410889734adc149feceb
Publikováno v:
Frontiers in Energy Research, Vol 9 (2022)
Under weak grid conditions, the variation of the grid impedance will affect the steady-state and dynamic performance of the LCL-filtered grid-connected inverter and even make the inverter unstable. To ensure the system stability and further improve t
Externí odkaz:
https://doaj.org/article/700a2abc971441e8b697744ce45162a5
Publikováno v:
Frontiers in Energy Research, Vol 9 (2021)
Hybrid energy storage system (HESS) using cascaded multilevel converters (CMC) has received increasing attention due to its merits on smoothing power fluctuations for renewable energy systems (RESs). However, CMC-based HESS still faces tough challeng
Externí odkaz:
https://doaj.org/article/0684d6ed5e5b4a78b90c9dbcb1a35a98
Publikováno v:
Advances in Civil Engineering, Vol 2019 (2019)
The deep vacuum dewatering method is effective for groundwater control in projects. By now, although the vacuum consolidation in soft soil foundation treatment has been analyzed much, the settlement of deep vacuum dewatering has not been researched s
Externí odkaz:
https://doaj.org/article/5bdb34ebec074507990e30122a53b717
Publikováno v:
Geofluids, Vol 2018 (2018)
Vacuum dewatering method has been widely used in geotechnical engineering. However, there is little research on the groundwater level distribution under the effect of vacuum pressure which is generated by vacuum wells. In view of this, the groundwate
Externí odkaz:
https://doaj.org/article/2d941dab488a4e359f66a1cfe754f16f
Publikováno v:
Energy Reports, Vol 7, Iss, Pp 257-266 (2021)
Due to the low output distortion and switch voltage stress, Vienna rectifiers have been widely utilized in high-power applications such as communication power supplies, wind power systems and electric vehicle charging piles. However, Vienna rectifier