Results 11 to 20 of about 325 (124)

Design considerations of series type hybrid circuit breaker (S‐HCB)

IET Power Electronics
The series‐type direct current (DC) hybrid circuit breaker (S‐HCB) concept was previously reported to offer better performance than solid‐state circuit breakers (SSCB) and hybrid circuit breakers (HCB).
Mahmoud Alashi, Triston Cooper, Yuanfeng Zhou, Z. John Shen, Ian Brown, Thomas Wong   +5 more
doaj   +2 more sources

A review on insulation challenges towards electrification of aircraft

High Voltage, Volume 8, Issue 2, Page 209-230, April 2023., 2023
Abstract Compared to the traditional aircraft, electrification of power system in aircraft has potential to revolutionise the aviation industry. Typically, more‐electric aircraft (MEA), even all‐electric aircraft has been developed and delivered to decrease the greenhouse gas emission and increase the energy efficiency.
Jun Jiang, Zhi Li, Wenyuan Li, Prem Ranjan, Xingdong Wei, Xu Zhang, Chaohai Zhang   +6 more
wiley   +1 more source

Short‐Circuit Protection Schemes for LVDC Microgrids Based on the Combination of Hybrid Circuit Breakers and Mechanical Breakers

International Transactions on Electrical Energy Systems, Volume 2023, Issue 1, 2023., 2023
In recent years, low‐voltage direct current (LVDC) microgrids are becoming more attractive because they represent a solution to integrate renewable sources, storage, and electronic loads bringing some advantages in comparison with traditional AC grids.
Riccardo Lazzari, Luigi Piegari, Kamran Iqbal   +2 more
wiley   +1 more source

High speed protection of medium voltage DC distribution system using modified mathematical morphology

IET Renewable Power Generation, Volume 16, Issue 14, Page 3134-3148, 26 October 2022., 2022
Abstract One of the challenging issues in the realization of medium‐voltage DC (MVDC) distribution system is high‐speed protection scheme design against quickly rising short circuit fault‐DC current. This paper proposes a high‐speed protection scheme based on the processing of energy signals through mathematical morphology (MM). The voltage and current
Maqsood Ahmad Shah, Syed Basit Ali Bukhari, Kashif Imran, Khawaja Khalid Mehmood, Faisal Mumtaz, Abdullah Abusorrah, Syed Ali Abbas Kazmi, Abdul Wadood   +7 more
wiley   +1 more source

An optimal phase control method for the suppression of phase sequence exchange impulse current and voltage

IET Power Electronics, Volume 15, Issue 5, Page 412-421, 8 April 2022., 2022
Abstract Phase sequence exchange (PSE) is an emerging emergency control method for power systems. However, PSE will generate impulse current and voltage. In this research, to suppress the impulse of PSE, a phase control method for zero‐current opening and equal‐voltage closing is adopted, and verified via both physics and experiments.
Yifan Li, Peng Sun, Hui Li, Shaofeng Huang, Haifeng Wu   +4 more
wiley   +1 more source

Novel power electronic device for power angle stability control

The Journal of Engineering, Volume 2022, Issue 4, Page 447-451, April 2022., 2022
Abstract This letter proposes a novel phase sequence exchange (PSE) device. When the generator loses synchronization and the power angle gradually increases, the primary side of the contact line is disconnected and quickly connected in a staggered phase using the power device with fast breaking characteristics.
Hui Li, Yifan Li, Shaofeng Huang, Huigen Li   +3 more
wiley   +1 more source

Overview of grounding schemes for solid‐state transformers in distribution networks

IET Generation, Transmission &Distribution, Volume 15, Issue 22, Page 3081-3099, November 2021., 2021
Abstract Proposed to be the critical enabling component for future distribution networks, solid‐state transformers (SSTs) have drawn much attention lately. They have a massive potential to help reduce size and weight, improve efficiency, integrate microgrids, renewables and energy storages in distribution systems, and can fulfil multiple grid functions
Jiajie Zang, Jiacheng Wang, Jianwen Zhang, Jianqiao Zhou   +3 more
wiley   +1 more source

Design criteria of solid‐state circuit breaker for low‐voltage microgrids

IET Power Electronics, Volume 14, Issue 7, Page 1284-1299, 20 May 2021., 2021
Abstract Solid‐state circuit breakers (SSCB) show great promise to become the key element in the protection of low‐voltage direct current microgrids. SSCBs operate in the microsecond range and employ semi‐conductor devices that have strict safe operation area limits.
Pavel Purgat, Samad Shah, Nils van der Blij, Zian Qin, Pavol Bauer   +4 more
wiley   +1 more source

Design of a snubber circuit for low voltage DC solid‐state circuit breakers

IET Power Electronics, Volume 14, Issue 6, Page 1111-1120, 6 May 2021., 2021
Abstract Solid‐state circuit breakers (SSCBs) are designed to interrupt fault currents typically several orders faster than its electromechanical counterparts. However, such an ultrafast switching operation would produce a dangerous overvoltage which might cause damages to SSCBs and other circuit elements in the system.
Zhongying Wang, Ekkanath Madathil Sankara Narayanan   +1 more
wiley   +1 more source

Directional element for faulty feeder identification of high‐resistance fault in high‐surety power supply systems

IET Generation, Transmission &Distribution, Volume 15, Issue 1, Page 45-55, January 2021., 2021
Abstract The high‐surety power supply systems are gaining great attention to enhance the reliability of uninterruptable power supplies. A high‐resistance fault along a high‐surety power supply feeder results in a low fault current, making the conventional high‐surety power supply protection strategy ineffective.
Roja Rouhani, Iman Sadeghkhani, Josep M. Guerrero   +2 more
wiley   +1 more source