Results 221 to 230 of about 8,400 (267)
Some of the next articles are maybe not open access.
Fault diagnosis in unidirectional non-isolated DC-DC converters
2014 IEEE Energy Conversion Congress and Exposition (ECCE), 2014Non-isolated DC-DC converters are the most simple and common power converter topologies and their reliability is of primary importance in many safety critical applications. Therefore, a new fault diagnostic method is presented in this paper for unidirectional non-isolated DC-DC converters using only the converters control variables without requiring ...
E. Ribeiro +2 more
openaire +1 more source
Open-Circuit Fault Diagnosis in Interleaved DC–DC Converters
IEEE Transactions on Power Electronics, 2014Interleaved dc-dc converters have been widely applied, because of their benefits related to efficiency, size, thermal management, modularity, and output current ripple cancellation. These converters present an enhanced fault tolerance capability, but an open-circuit fault can leads to ripple beyond load requirements.
E. Ribeiro +2 more
openaire +1 more source
High power IGBT-based DC/DC converter with DC fault tolerance
2012 15th International Power Electronics and Motion Control Conference (EPE/PEMC), 2012This paper studies a DC/DC converter based on IGBT-bridges which is suitable for connection to HVDC (High Voltage DC) and for building high power DC grids. The DC faults are of highest concern for DC grids, and the primary converter design aims are to achieve inherent current regulation under DC faults in addition to minimizing converter losses. Design
D. Jovcic, J. Zhang
openaire +1 more source
DC Short Faults and Fault Current Limiting Technologies in Flexible DC Grid: A Review
2019 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), 2019Flexible DC grid is regarded as a promoter for the future power system. In other words, it provides a feasible approach to realizing large-scale access of renewable energy sources in energy integration, interconnection and storage technology. However, fault current limiting technology is an urgent barrier for the advancement of flexible DC grid.
Yangzheng Guo, Qianming Xu, Rong Han
openaire +1 more source
A simple open-circuit fault detection method for a fault-tolerant DC/DC converter
2015 IEEE 11th International Conference on Power Electronics and Drive Systems, 2015This paper presents a two-switch step-down converter topology with fault tolerant capability. The proposed fault detection method uses the source-to-ground voltage of the floating MOSFET to identify the fault. If an open-circuit fault on the MOSFET occurs, the source voltage will become zero.
John Long Soon, Dylan Dah-Chuan Lu
openaire +1 more source
2020
DC fault current breaking devices are important components for enabling robust protection of the dc system. This chapter will present the ongoing developments regarding the dc fault isolation devices. There are two major trends in dc fault isolation, namely based on, dc circuit breaker (DCCB) and converter-based solution.
Abhisek Ukil +2 more
openaire +1 more source
DC fault current breaking devices are important components for enabling robust protection of the dc system. This chapter will present the ongoing developments regarding the dc fault isolation devices. There are two major trends in dc fault isolation, namely based on, dc circuit breaker (DCCB) and converter-based solution.
Abhisek Ukil +2 more
openaire +1 more source
DC–DC Autotransformer With Bidirectional DC Fault Isolating Capability
IEEE Transactions on Power Electronics, 2016This paper studies the control and dc fault isolation of a dc–dc autotransformer topology (DC AUTO). The operating principle and power flow analysis of a DC AUTO are studied. Internal dynamic study shows that dynamics of the common bus ac voltage is a purely algebraic equation. A control strategy of using VSC2 to control common ac bus voltage, and VSC1
openaire +1 more source
DC-DC Converter Assisted Fault Current Control in DC Microgrid
2019 National Power Electronics Conference (NPEC), 2019Due to absence of natural zero crossing and fast rise in dc current during fault, the fault current clearing in dc microgrid has been a challenge. The fault current is high in pole to pole fault. It is even higher in the presence of multiple dc generators as all the generators feed the maximum possible current in the network during the fault.
Kuppili Anirudh +2 more
openaire +1 more source
Fault Analysis of DC – DC Converter
2023 2nd International Conference on Advancements in Electrical, Electronics, Communication, Computing and Automation (ICAECA), 2023Premalatha K +3 more
openaire +1 more source
How to detect and to localize a fault in a DC/DC converter?
Proceedings of the 1992 International Conference on Industrial Electronics, Control, Instrumentation, and Automation, 2003The authors present an approach to detecting and localizing faults in a chopper and its supply. The proposed technique is based on an estimation of the state variables, a comparison with measured state variables, and a generation of residuals. These residuals are then treated in a diagnostic module where the defects are detected and a preliminary ...
C.-S. Berendsen +3 more
openaire +1 more source