Results 241 to 250 of about 2,536,520 (305)

Threshold selection for the over current protection function

CAS 2011 Proceedings (2011 International Semiconductor Conference), 2011
This paper proposes an over current protection circuit implementation with a new selectable threshold level function. The over current threshold level is controlled from a dedicated pin by an external resistance. A circuit capable of providing a reference current proportional to the external con-trol resistor is designed.
Bogdan-Eugen Matei, Cosmin Constantin Cocora, Andrei Danchiv   +2 more
openaire   +1 more source

Open-Circuit Fault in EHV/UHV Transmission System and New Zero Sequence Over-current Protection Scheme

IEEE International Conference on Power System Technology, 2018
In electric grid operation, open-circuit fault may cause mal-trip of zero sequence over-current protection of adjacent transmission lines. Especially for multi-circuit transmission lines with heavy load, mal-trip of zero sequence over-current protection ...
YaDong Liu, Jiwei Sun, Guangshun Gong, Xiaoli Zhang, Lie Zhang   +4 more
semanticscholar   +1 more source

Characterisation of a motor driver with over-current protection and speed feedback

The 5th International Conference on Automation, Robotics and Applications, 2011
Urban search and rescue robots are becoming more prolific and widely used. However, these robots are still being developed for specific environments and situations. The research being undertaken at Massey University is part of a larger collaboration to produce a multi-tiered robotic system for urban search and rescue. The first major hurdle of a mobile
Brendon Rhys Le Comte, Gourab Sen Gupta
openaire   +1 more source

A transient current protection and fault location scheme for MMC-HVDC transmission network

, 2021
The relation between fault current waves and variations of transient current in dc transmission lines (DC-TL) is meticulously investigated under numerous fault conditions.
Xiaodong Zheng, M. H. Nadeem, N. Tai, S. Habib, Biqi Wang, Moduo Yu, Yangyang He   +6 more
semanticscholar   +1 more source

A novel over-current protection for digital power amplifier

2012 IEEE 11th International Conference on Solid-State and Integrated Circuit Technology, 2012
The paper presents a novel over current protection circuit in digital power amplifier. The over current protection circuit would be used to shut down the output buffer when two output pins short-circuit to power supply, short-circuit to ground or short-circuit to each other.
Yong Xu, Fei Zhao, Rui Min, Zhen Sun, Ying Huang   +4 more
openaire   +1 more source

A new IGBT with a monolithic over-current protection circuit

Proceedings of the 6th International Symposium on Power Semiconductor Devices and Ics, 2002
A new IGBT structure with a monolithic overcurrent sensing and protection circuit has been developed. The feature of this device is a novel integration of a sensing and protection circuit which consists of a sensing IGBT, lateral n-MOSFET, polycrystalline silicon diode and resistor with an IGBT structure.
Y. Seki, Y. Harada, N. Iwamuro, N. Kumagai   +3 more
openaire   +1 more source

Over current protection methods for LLC resonant converter

Eighteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2003. APEC '03., 2004
LLC resonant converter was getting more and more attention in recent years because of its high efficiency, high frequency operation capability and simple structure. In this paper, the over current protection issue of LLC resonant converter is discussed.
B. Yang, F.C. Lee, M. Concannon
openaire   +1 more source

Protection Coordination in AC Microgrid via Novel Voltage-Supervised Directional Over-Current Relays

IEEE Transactions on Power Delivery
Conventional protection schemes are susceptible to dynamic changes in AC microgrids having diverse Distributed Generators (DGs). These changes, caused by different DG types, significantly alter the fault current levels, leading to conventional ...
A. Soni, A. Mohapatra, Sri Niwas Singh
semanticscholar   +1 more source

Fast over-current protection of high power IGBT modules

2005 European Conference on Power Electronics and Applications, 2005
IGBT high power modules are protected against over-current and short-circuit. These phenomena are defined and classical methods are explained. A new protection circuit is presented with the help of a formal approach for enhanced response time.
Lefranc, Pierre, Bergogne, Dominique, Morel, Hervé, Allard, Bruno, Roche, Jean-François   +4 more
openaire   +2 more sources

Tuned Fuzzy Controller Based Over Current Protection Scheme

2008 Joint International Conference on Power System Technology and IEEE Power India Conference, 2008
The measurands from the remote location are gathered at central control room (CCR) for processing, taking corrective action and presenting to higher hierarchy in a presentable format and it requires remote terminal unit to communicate between them. The pre-processing of current has been done using fuzzy logic algorithm for pre-processing the measurands
V.K. Chandna, P. Kumar, Mini S. Thomas, Rajveer Singh   +3 more
openaire   +1 more source