Proceedings ArticleDOI
Modified z-source DC circuit breaker topologies
Allan Overstreet,Atif Maqsood,Keith Corzine +2 more
- pp 1-6
TLDR
In this paper, a modified z-source breaker is introduced for operation at medium-voltage dc with future applications in naval ship power systems, which limits capacitor current in the circuit and can be easily modified for fault detection.Abstract:
The z-source breaker has been introduced as a new circuit for quickly and automatically switching off in response to faults. A modified z-source breaker design is introduced for operation at medium-voltage dc with future applications in naval ship power systems. Compared to existing designs the respective design will allow for step changes in load. This new design also limits capacitor current in the circuit and can be easily modified for fault detection. Analysis of the breaker operation is presented during both fault and step changes in load. Low voltage laboratory validation of the breaker was carried out on two different versions of the proposed circuit.read more
Citations
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Journal ArticleDOI
DC Microgrid Protection: A Comprehensive Review
TL;DR: The challenges of DC microgrid protection are investigated from various aspects including, dc fault current characteristics, ground systems, fault detection methods, protective devices, and fault location methods.
Journal ArticleDOI
Analysis and Design of DC System Protection Using Z-Source Circuit Breaker
TL;DR: In this paper, 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, analogous in some respects to a thermal-magnetic breaker.
Journal ArticleDOI
Fault Detection and Isolation in Medium-Voltage DC Microgrids: Coordination Between Supply Power Converters and Bus Contactors
Pietro Cairoli,Roger A. Dougal +1 more
TL;DR: In this article, a fast and effective method for detecting and isolating faults in medium-voltage dc microgrids relies on rapid coordination between power supply converters and bus segmentizing contactors to limit currents and isolate faults without any need for fast communication between these active elements.
Journal ArticleDOI
HVDC Circuit Breakers: A Comprehensive Review
Fazel Mohammadi,Kumars Rouzbehi,Masood Hajian,Kaveh Niayesh,Gevork B. Gharehpetian,H. Saad,Mohd. Hasan Ali,Vijay K. Sood +7 more
TL;DR: A comprehensive review of HVDC CBs technologies, including recent significant attempts in the development of modern high voltage direct current CBs, is presented in this article, where the functional analysis of each technology is presented.
Journal ArticleDOI
A New-Coupled-Inductor Circuit Breaker for DC Applications
TL;DR: In this article, a new type of dc circuit breaker is proposed, which uses a short conduction path between the breaker and load as well as mutual coupling to automatically and rapidly switch Off in response to a fault.
References
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Journal ArticleDOI
Z-source inverter
TL;DR: The Z-source converter employs a unique impedance network to couple the converter main circuit to the power source, thus providing unique features that cannot be obtained in the traditional voltage-source (or voltage-fed) and current-source converters where a capacitor and inductor are used, respectively.
Journal ArticleDOI
Protection of Low-Voltage DC Microgrids
TL;DR: In this paper, a low-voltage (LV) DC microgrid protection system design is proposed and the operating principles and technical data of LV DC protection devices, both available and in the research stage, are presented.
Journal ArticleDOI
Switched Inductor Z-Source Inverter
Miao Zhu,Kun Yu,Fang Lin Luo +2 more
TL;DR: In this paper, a switched inductor (SL) Z-source inverter is proposed to enlarge voltage adjustability, which employs a unique SL impedance network to couple the main circuit and the power source.
Journal ArticleDOI
Fault Detection and Isolation in Low-Voltage DC-Bus Microgrid System
Jae-Do Park,Jared Candelaria +1 more
TL;DR: In this paper, a fault detection and isolation scheme for lowvoltage dc-bus microgrid systems is presented, which consists of master and slave controllers that monitor currents and control the segment separation, which include solid-state bidirectional switches and snubber circuits.
Proceedings ArticleDOI
The Status of DC Micro-Grid Protection
TL;DR: A discussion of the current status of dc micro-grid protection, including the use of electro-mechanical circuit breakers, solid state circuit Breakers, protective system design, ground fault location and fault isolation.