Results 161 to 170 of about 56,549 (215)

Research on DC Grid Power Characteristics and DC Active Power Filtering

Advanced Materials Research, 2013
When nonlinear load is powered by DC grid, harmonic currents and distortion power are produced. At first, the concept of the DC active power filter (DC-APF) is presented in this paper after the analysis of instantaneous power and power factor in the DC network.
Si Wen Tang, Yin Long Li, Li Wen Luo, Xi Jun Yang   +3 more
openaire   +1 more source

A Double Uneven Power Converter-Based DC–DC Converter for High-Power DC Grid Systems

IEEE Transactions on Industrial Electronics, 2015
This paper presents a novel double uneven power converter-based dc-dc converter and its design and control methods. The main objectives are to reduce the power losses in the power semiconductor devices and to reduce the output filter inductance in a high-power (megawatt-level) dc-dc converter.
Kiwoo Park, Zhe Chen 0007
openaire   +2 more sources

A Multiport Embedded DC Power Flow Controller for Meshed DC Distribution Grids

IEEE Transactions on Industrial Electronics, 2022
Ring and meshed dc distribution grids have attracted increasing interest lately. Their multi-point and multi-terminal structure facilitates flexible operational control and reliable power supply across the network. However, the systems implemented with existing power converters lack sufficient control freedoms for proper power flow adjustment ...
Jianwen Zhang, Weixin Fang, Jiacheng Wang 0003, Jianqiao Zhou, Gang Shi, Xu Cai, Yunwei Li 0001   +6 more
openaire   +1 more source

Combined DC Power Flow Controller for DC Grid

2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia), 2018
The utilization of DC power flow controller can increase the control freedom in the complex DC gird, which will improve both the active power distribution and coordination control performance of DC grid. The general concept frame of Combined DC power flow controller has been proposed in this paper, as well as a detailed topology.
null Xu Zhong, null Miao Zhu, null Yongning Chi, null Xizhou Du, null Siqi Liu, null Xu Cai   +5 more
openaire   +1 more source

Power management of DC micro-grid and AC grid

2017 International Conference on Innovations in Information, Embedded and Communication Systems (ICIIECS), 2017
This paper proposes power management of a hybrid structure. The hybrid structure consists of DC micro-grid and AC grid. The advancement in the technologies gives rise to increased use of a DC micro-grid. By increasingly number of micro sources there is requirement of DC micro-grid.
Ananda B. Jadhav, S. H. Pawar
openaire   +1 more source

Online Monitoring of the Power Transfer in a DC Test Grid

IEEE Transactions on Instrumentation and Measurement, 2010
One solution for increasing the use of renewables is to find new strategies to promote the connection of distributed energy resources (DERs) within the existing power system. A solution that allows a flexible integration of dispersed generation (DG) into energy networks is the use of dc at the user layer.
Albu, M., Kyriakides, Elias, Chicco, G., Popa, M., Nechifor, A., Albu, M., Kyriakides, Elias, Chicco, G., Popa, M., Nechifor, A.   +9 more
openaire   +3 more sources

Conducted Emissions on DC Power Grids

2018 International Symposium on Electromagnetic Compatibility (EMC EUROPE), 2018
This paper describes measurements and modelling of conducted emissions in the time and frequency domain to characterize the impact of typical DC/DC converters as found on DC grids for renewable generation. A small demonstration HVDC system with active DC/DC converters was built and measurements taken over a range of load and system voltages.
Ensini, L., Sandrolini, L., Thomas, D. W. P., Sumner, M., Rose, C.   +4 more
openaire   +1 more source

A DC Power Flow Controller for Multi-Terminal DC Grids

2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2), 2020
A HVDC grid based on voltage source converter (VSC) is an attractive solution for the grid integration of offshore renewable energy, interconnection of ac grids, facilitation of power markets, and energy emergency support. However, the power flow within the dc grids is determined by the line resistance and cannot be fully controlled by the VSCs only ...
Zhilin Xiao, Xiaotian Zhang, Jiuyang Jin, Yaru He, Xu Yang   +4 more
openaire   +1 more source

HTS Power Technology for Future DC Power Grid

IEEE Transactions on Applied Superconductivity, 2013
The growing environmental pressure resulting from the use of fossil fuels is leading mankind to make a transition from the use of traditional energy sources to that of renewable energy based clean energy. Because renewable energy has the feature of instability, it thus brings significant challenges on real-time power balance and power dispatching ...
null Liye Xiao, null Shaotao Dai, null Liangzhen Lin, null Zhifeng Zhang, null Jingye Zhang   +4 more
openaire   +1 more source

Protection schemes for distribution lines in DC power grid

2015 IEEE Innovative Smart Grid Technologies - Asia (ISGT ASIA), 2015
DC distribution network will be widely used in the future with more integration of distributed generation. However, development of DC distribution is hindered by lack of appropriate circuit protection technologies. Certain protection schemes are studied in this paper, and used to detect and isolate the fault on the distribution lines and bus-tie line ...
Zaibin Jiao, Zhao Wang, Xiaobing Wang, Jiliang Jin, Wu Xing, Chongxi Jiang   +5 more
openaire   +1 more source