Results 251 to 260 of about 356,866 (308)
Some of the next articles are maybe not open access.
2015 IEEE First International Conference on DC Microgrids (ICDCM), 2015
Direct current (DC) power grids are an interesting option for buildings to connect natural DC power sources such as photovoltaic power systems with DC loads like lighting, IT systems as well as speed-controlled electric motors of heating, ventilation and air-conditioning systems. The paper documents learnings, measurements and efficiency differences of
U. Boeke, M. Wendt
openaire +1 more source
Direct current (DC) power grids are an interesting option for buildings to connect natural DC power sources such as photovoltaic power systems with DC loads like lighting, IT systems as well as speed-controlled electric motors of heating, ventilation and air-conditioning systems. The paper documents learnings, measurements and efficiency differences of
U. Boeke, M. Wendt
openaire +1 more source
Stability analysis of high-power DC grids
Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference, 2009During the last several years, increasing effort has been spent to advance offshore wind power. So far, only small test fields have been realized, and the electrification of offshore wind farms still remains a research topic. Currently, offshore wind farms are equipped with three-phase ac grids, some of them will be connected to the transmission grid ...
F. Mura, C. Meyer, R.W. De Doncker
openaire +1 more source
Research on DC Grid Power Characteristics and DC Active Power Filtering
Advanced Materials Research, 2013When 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 +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, 2015This 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
Combined DC Power Flow Controller for DC Grid
2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia), 2018The 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 +5 more
openaire +1 more source
A Multiport Embedded DC Power Flow Controller for Meshed DC Distribution Grids
IEEE Transactions on Industrial Electronics, 2022Ring 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 +6 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), 2017This 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, 2010One 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. +9 more
openaire +3 more sources
Conducted Emissions on DC Power Grids
2018 International Symposium on Electromagnetic Compatibility (EMC EUROPE), 2018This 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. +4 more
openaire +1 more source