Results 171 to 180 of about 56,549 (215)

Control of Bidirectional Quadratic DC-DC Converters for Storage Support of DC Power Grids

2018 7th International Conference on Renewable Energy Research and Applications (ICRERA), 2018
Many applications require a DC bus supporting connections to several renewable energy sources, storage systems and loads. However, due to the intermittent nature of renewable energy sources and load variations it is essential to stabilize the voltage of the DC bus. Usually a battery is used to support the DC bus voltage, but their continuous charge and
Fernao Pires, Vitor, Cordeiro, Armando, Foito, Daniel, Silva, J. Fernando   +3 more
openaire   +2 more sources

Investigation of power oscillation at common DC bus in DC grid

2019 IEEE International Conference on Industrial Technology (ICIT), 2019
DC grid has been emerging as an efficient nextgeneration power distribution system that would enable smooth and cost-effective integration of distributed resources along with efficient use of loads. Nevertheless, this new technology poses significant challenges in terms of stability (power oscillation) and quality (resonance, ripple) at the system ...
Habibullah, Mohamad, Mithulananthan, N., Zare, Firuz, Alkaran, Davood Solati   +3 more
openaire   +3 more sources

Power management in dc-grid through two-input dc-dc converter

2014 Eighteenth National Power Systems Conference (NPSC), 2014
A new two-input dc-dc converter for power management in dc grid is presented in this paper. This two-input converter is evolved through the combination of Boost and SEPIC converter. Steady-state and state-space analysis is performed to understand the performance of the proposed converter and then to design appropriate digital controllers for better ...
M. Veerachary, Vijay Kumar Tiwari
openaire   +1 more source

Impact of Control Systems on Power Quality at Common DC Bus in DC Grid

2019 IEEE PES GTD Grand International Conference and Exposition Asia (GTD Asia), 2019
DC microgrid is becoming very popular because of its easy and cost-effective interface with renewable resources and extensive use of power electronics (PE) loads in daily life. Nevertheless, this emerging technology poses significant challenges in terms of energy management, stability, and power quality.
Habibullah, Mohamad, Mithulananthan, N., Zare, Firuz, Sharma, Rahul   +3 more
openaire   +4 more sources

Multiport High-Power LCL DC Hub for Use in DC Transmission Grids

IEEE Transactions on Power Delivery, 2014
This paper proposes an LCL dc hub concept which plays the role of a dc substation in a dc grid. The hub is capable of connecting multiple dc transmission lines with different dc voltages. Each dc transmission line can be added to or isolated from the hub without affecting the operation of the other dc transmission lines. The hub is based on multiple ac/
Dragan Jovcic, Weixing Lin
openaire   +1 more source

Wind power DC grid and Variable Speed DC power system operating control

Proceedings of The 7th International Power Electronics and Motion Control Conference, 2012
VSC-HVDC power transmission system that connected long-distance high-capacity wind farm to the grid will be an important direction of the wind power technology development. The grid access solutions designed according to traditional AC grid structure could not fully reflect the advantages of the VSC-HVDC transmission. Firstly the typical grid solutions
Xinyin Zhang, Zaijun Wu, Sipeng Hao
openaire   +1 more source

Power interchange by the DC bus in micro grids

2015 IEEE First International Conference on DC Microgrids (ICDCM), 2015
In this paper, DC power interchange is confirmed to reduce the battery damage by according to the fluctuations in the battery voltage in each micro grid. We investigated various conditions that constructed the DC power interchange system in two micro grids using the DC power flow controller.
Takashi Takeda, Hiroaki Miyoshi, Kazuto Yukita, Yasuyuki Goto, Katsuhiro Ichiyanagi   +4 more
openaire   +1 more source

Comparative Evaluation of Multiport DC Power Router for DC Distribution Grid

2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia), 2020
DC power router serves as the key node in DC distribution grid, with the multiple operation aims of voltage regulation, power dispatching and fault protection. In this paper, three series of DC power router topologies have been developed in duality of classical AC substation, including AC-bus type, DC-bus type and DC-fault-tolerant (DC-FT) type.
Qian TAO, Jianjun MA, Miao ZHU, Qing DUAN, Guanglin SHA   +4 more
openaire   +1 more source

Characterization of a DC grid for Power Line Communications in smart grids

2014 IEEE 15th Workshop on Control and Modeling for Power Electronics (COMPEL), 2014
This work deals with the characterization of a power line, devoted to energy distribution and supplied by DC voltage, aiming to use the same line for exchange of information by means of a Power Line Communications (PLC) system. For this purpose, the DC power grid has been considered as a transmission line.
openaire   +2 more sources

Power flow control devices in DC grids

2012 IEEE Power and Energy Society General Meeting, 2012
A HVDC grid based on voltage source converters (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.
null Qing Mu, null Jun Liang, null Yalou Li, null Xiaoxin Zhou   +3 more
openaire   +1 more source