Results 211 to 220 of about 135,907 (264)
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A DC-DC boost converter with short circuit protection
Proceedings of IECON'94 - 20th Annual Conference of IEEE Industrial Electronics, 2002In this paper, a modified DC/DC boost power convertor topology is proposed that provides short circuit protection to all power semiconductor devices of the power circuit. The proposed topology is analysed and simulated, and the experimental results obtained from a 160 W unit confirm the analysis. >
G.A. Garvelis, S.N. Manias, G. Kostakis
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High gain DC-DC converter with protection circuit
2011 International Conference on Energy, Automation and Signal, 2011This 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
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Overload protection in digitally controlled DC-DC converters
2006 37th IEEE Power Electronics Specialists Conference, 2006This paper presents an approach to overload protection based on a predictive average current-mode control technique for digitally controlled DC-DC switched-mode power supplies. The proposed approach can be applied in voltage-mode or current-mode control architectures. The current limit, the converter actions upon detecting an overload, and the shape of
Hao Peng, Dragan Maksimovic
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A Review of DC Micro-grid Protection
2013In 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 +4 more
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Protective Systems in DC Microgrids
2019The aging power system causes to several grid problems such as intermittency, power quality issues, and blackouts since a few decades. Therefore, the power infrastructure requires serious troubleshooting studies in a wide manner. The distributed generation and integration of large photovoltaic (PV) plants to the existing utility have led to intensive ...
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DC Protection on the Electric Ship
2007 IEEE Electric Ship Technologies Symposium, 2007The 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
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Design of DC system protection
2013 IEEE Electric Ship Technologies Symposium (ESTS), 2013A 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 +3 more
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AC/DC railway electrification and protection
9th IET Professional Development Course on Electric Traction Systems, 2006The 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 ...
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Research on DC Line Protection
2014 International Symposium on Computer, Consumer and Control, 2014As 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 +4 more
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Converter-based DC Distribution System Protection
2018 IEEE Industry Applications Society Annual Meeting (IAS), 2018Dc distribution systems are being widely adopted in many industrial, commercial and military energy systems such as commercial buildings, data centers, off-shore wind farms, and shipboard power systems. A dc distribution system can improve energy efficiency and reduce the size or weight of power systems.
Xianyong Feng +5 more
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