Results 261 to 270 of about 12,263,286 (349)

Rectifier Fault Currents

Transactions of the American Institute of Electrical Engineers, 1945
CURRENTS in excess of normal, or fault currents, flow in rectifier circuits under conditions of arc-back or d-c short circuit. In normal service, faults are imposed on rectifiers by both the arc-backs that occur in the rectifier itself and the short circuits that occur in the external d-c system.
C. C. Herskind, H. L. Kellogg
openaire   +2 more sources

DC Fault Current Clearance at the Source Side of HVDC Grid Using Hybrid MMC

IEEE Transactions on Power Delivery, 2020
This paper proposes a source-side DC fault current clearance scheme for HVDC grids under DC short-circuit faults. The scheme uses half-bridge submodules (HBSM) and full-bridge submodules (FBSMs)-based hybrid modular multilevel converter (MMC).
Jianzhong Xu, Xibei Zhao, Hao Jing, Jun Liang, Chengyong Zhao   +4 more
semanticscholar   +1 more source

HVdc Reactor Reduction Method Based on Virtual Reactor Fault Current Limiting Control of MMC

IEEE transactions on industrial electronics (1982. Print), 2020
A large high-voltage direct current (HVdc) reactor is required in modular multilevel converter (MMC) projects to realize dc fault current limiting (FCL). This condition may result in adverse effects on MMC control dynamics and oscillation and instability
Xiaoqian Li, Ziming Li, Biao Zhao, Chao Lu, Q. Song, Yuebin Zhou, H. Rao, Shukai Xu, Zhe Zhu   +8 more
semanticscholar   +1 more source

Multicell Fault Current Limiter

IEEE Transactions on Industrial Electronics, 2014
A multicell fault current limiter (MCFCL) is proposed in this paper. The MCFCL is composed of multiple fault current limiting cells. Each fault current limiting cell consists of a fault current limiting inductor and a power electronic module. The proposed MCFCL has the flexibility in expanding the operation voltage by increasing the number of fault ...
Wenyong Guo, Liye Xiao, Shaotao Dai, Zhifeng Zhang, T. Ma, Yuanhe Li, Xi Xu   +6 more
openaire   +1 more source

A survey on fault current limiters: Development and technical aspects

, 2020
This paper presents an overview on fault current limiters (FCLs) technologies in power systems. First, the FCLs have been classified into four groups: superconducting FCLs (SFCLs), solid-state FCLs (SSFCLs), hybrid FCLs (HFCLs), and other technologies ...
A. Safaei, M. Zolfaghari, M. Gilvanejad, G. Gharehpetian   +3 more
semanticscholar   +1 more source

Mechanism Analysis of DFIG-Based Wind Turbine’s Fault Current During LVRT With Equivalent Inductances

IEEE Journal of Emerging and Selected Topics in Power Electronics, 2020
Doubly fed induction generator (DFIG)-based wind turbine (WT) has a distinct fault current contribution that is critical for the power system analysis.
Yuanzhu Chang, Jiabing Hu, Xiaoming Yuan
semanticscholar   +1 more source

Short-circuit fault current-limiting characteristics of a resistive-type superconducting fault current limiter in DC grids

Superconductors Science and Technology, 2020
Resistive-type superconducting fault current limiters (R-SFCLs) can limit short-circuit fault current and help DC circuit breakers (DCCBs) to isolate short-circuit faults in medium voltage and high voltage DC (HVDC) systems.
B. Xiang, Lei Gao, Zhiyuan Liu, Yingsan Geng, Jianhua Wang   +4 more
semanticscholar   +1 more source

Nonsuperconducting Fault Current Limiter With Controlling the Magnitudes of Fault Currents

IEEE Transactions on Power Electronics, 2009
In this paper, a diode-bridge-type nonsuperconductor fault current limiter (NSFCL) is proposed. The structure has the capability of controlling the DC reactor current that yields to control the magnitude of fault current. In order to control the magnitude of DC reactor current, a discharging resistor is used in the proposed structure.
M.T. Hagh, M. Abapour
openaire   +1 more source

A Mutual-Inductance-Type Fault Current Limiter in MMC-HVDC Systems

IEEE Transactions on Power Delivery, 2020
Faults on the dc line threaten the stability and reliability of the modular-multilevel-converter-based HVDC (MMC-HVDC) systems. Fault current limiting is one of the crucial steps to handle the dc line fault.
Z. Fu, W. Sima, Ming Yang, P. Sun, T. Yuan, Xiaofeng Wang, Yang Long   +6 more
semanticscholar   +1 more source

Inductive fault current limiters: A review

, 2020
A fault current limiter (FCL) is an effective means of limiting fault currents that is a promising power system protection solution. This paper presents a comparative survey of research activities and emerging technologies of FCL and discusses in detail ...
Amir Heidary, H. Radmanesh, K. Rouzbehi, A. Mehrizi‐Sani, G. Gharehpetian   +4 more
semanticscholar   +1 more source