Results 291 to 300 of about 3,066,070 (344)

High gain DC-DC converter with protection circuit

2011 International Conference on Energy, Automation and Signal, 2011
This paper proposes a method to obtain a protected voltage gain by employing a protection circuit for the voltage doubler or multiplier circuit in an isolated tyde DC-DC Converter. The entire set up consists of a phase shift converter with a protected bridge/voltage doubler rectifier on the output side.
P. D. Dharmesh, D. Elangovan
openaire   +1 more source

DC Protection on the Electric Ship

2007 IEEE Electric Ship Technologies Symposium, 2007
The need for DC power at continuous uninterrupted rates is a reality for ship survival during highly intense combat and regular travel. One of the new proposed distribution systems on the all-electric ship (E-ship) is designed using a DC distribution method (zones) in which the use of transformers and possible frequency issues/manipulations can be ...
Hymiar Hamilton, Noel N. Schulz
openaire   +1 more source

Unit Protection of Tapped Line DC Microgrid

IEEE Journal of Emerging and Selected Topics in Power Electronics, 2022
DC microgrids are attractive options for being more efficient and less complex than ac microgrids. Several protection methods exist for ring main and radial dc microgrid architecture, but the development of protection techniques for tapped line-based dc ...
G. K. Rao, P. Jena
semanticscholar   +1 more source

A Г-Source Circuit Breaker for DC Microgrid Protection

IEEE transactions on industrial electronics (1982. Print), 2021
In this article, a novel Г-source circuit breaker (CB) that can offer automatic fault isolation with no reflected fault current in the feeding source is proposed for the protection of dc microgrids.
Zhongzheng Zhou, Jianguo Jiang, Shu Ye, Cong Liu, Dan Zhang   +4 more
semanticscholar   +1 more source

Design of DC system protection

2013 IEEE Electric Ship Technologies Symposium (ESTS), 2013
A modified Z-source breaker topology is introduced to minimize the reflected fault current drawn from a source while retaining a common return ground path. A conventional Z-source breaker does not provide steady-state overload protection and can only guard against extremely large transient faults. The Z-source breaker can be designed for considerations
A. H. Chang, A. Avestruz, S. B. Leeb, J. L. Kirtley   +3 more
openaire   +1 more source

A DC Fault Protection Scheme for MMC-HVDC Grids Using New Directional Criterion

IEEE Transactions on Power Delivery, 2021
To meet the ultra-fast, selective, and reliable requirements of the DC fault protection, a protection scheme for modular multilevel converter based HVDC grids is proposed in this paper.
Xiuyong Yu, Liye Xiao
semanticscholar   +1 more source

Research on DC Line Protection

2014 International Symposium on Computer, Consumer and Control, 2014
As the main protection of high voltage direct current (HVDC), the traveling wave protection is not easily affected by the resistance and capacitance of the transmission line, but there are still some shortcomings. This article not only briefly analyses some the traveling wave protection method based on wavelet transform and mathematical morphology, but
Zhouxing Fu, Ruoya Zhang, Lingling Huang, Peiqi Fu, Nan Wang   +4 more
openaire   +1 more source

A Review of DC Micro-grid Protection

2013
In this paper, an overview of DC micro-grid is described, which includes the status of DC micro-grid protection and its future development. The paper presents the key techniques of DC micro-grid protection. So far, standards, guidelines and techniques for DC micro-grid protection are well behind AC system.
Yuhong Xie, Jia Ning, Yanquan Huang, Junbo Jia, Zhihui Jian   +4 more
openaire   +1 more source

Advanced Rapid Directional Over-Current Protection for DC Microgrids Using K-Means Clustering

IEEE Transactions on Power Delivery
Over-current (OC) protection is one of the often-used protections in DC microgrids. Its rapid operation, critical for protecting the system, is a key reason for its widespread use, as it plays a pivotal role in swiftly isolating fault conditions and ...
Saeed Sanati, A. Mosayebi, Innocent Kamwa   +2 more
semanticscholar   +1 more source

AC/DC railway electrification and protection

9th IET Professional Development Course on Electric Traction Systems, 2006
The technical strength of all electrification schemes lies in the fact that the prime mover is removed from the train; but this is also its economic weakness. By taking power from a distribution network there is almost unlimited power available which has been efficiently produced but the cost of providing the fixed installations can only be justified ...
openaire   +1 more source