Results 1 to 10 of about 504,144 (188)
A Unidirectional DC-DC Autotransformer for DC Grid Application [PDF]
Energies, 2018 Conventional unidirectional DC-DC converters for DC grid application employ DC-AC-DC two-stage conversion technology and suffer from high converter cost and power loss.
Meng Zhou +4 more
doaj +4 more sources
An AC voltage sensorless predictive current control method for grid-tied inverter with enhanced robustness against current DC offset [PDF]
Scientific ReportsConventional AC voltage sensorless predictive current control methods for grid-tied inverter are often sensitive to current DC offset errors, resulting in worse control performance.
Guolin Zhang +4 more
doaj +2 more sources
Hierarchical and Droop Method for DC Micro-grid Bus Voltage under Isolated operation [PDF]
E3S Web of Conferences, 2020 Nowadays, distributed generation technology is of great help to the efficient utilization of new energy. If the distributed power supply is connected to the DC micro-grid, it will be more secure and reliable.
Yan Xiangyang +6 more
doaj +1 more source
IEEE Access, 2023 The grid-side transient fault ride-through problem seriously affects the stable operation of the grid-connected wind turbine. At present, the grid-connected adaptability analysis of DC wind turbine (DCWT) under the grid-side transient faults is still a ...
Zhanlong Li +3 more
doaj +1 more source
南方能源建设, 2023 [Introduction] Under the existing converter station reactive power compensation scheme, the synchronous condenser only provides transient reactive power support, and the AC (Alternating Current) filter undertakes steady-state reactive power compensation ...
Dongqing ZHANG +3 more
doaj +1 more source
IEEE Access, 2023 Compared with traditional DC power flow analysis; multi-voltage level DC grid power flow analysis is more complex due to its diverse operation methods. This article proposes the power flow calculation method in multi-voltage level DC grid considering the
Shifeng Ye +3 more
doaj +1 more source
Direct usage of photovoltaic solar panels to supply a freezer motor with variable DC input voltage [PDF]
, 2020 In this paper, a single-phase photovoltaic (PV) inverter fed by a boost converter to supply a freezer motor with variable DC input is investigated. The proposed circuit has two stages.
Farzan Moghaddam, Ali +1 more
core +2 more sources
Stability analysis of hybrid synchronization controller based grid forming control
Energy Reports, 2023 Synchronization units are vital for the stable operation of grid-tied converters in generation and transmission. There are two main synchronization units, i.e., phase-locked loop (PLL) and power synchronization controller (PSC), with the corresponding ...
Rongcai Pan +5 more
doaj +1 more source
电力工程技术, 2022 The fault characteristics of direct current (DC) grids can be analyzed by addressing the grid damping characteristics. However,the frequency-dependent characteristics of the transmission line parameters are usually ignored in the conventional grid ...
CHEN Siwei +5 more
doaj +1 more source
Frontiers in Energy Research, 2021 Flexible direct current (DC) grid can realize large-scale renewable energy, wide-area coordinated complementation, and reliable power transmission. It is an important development that can be used to support high-voltage and large-capacity flexible DC ...
Yinfeng Sun +6 more
doaj +1 more source