Results 111 to 120 of about 10,256 (232)

Design of a high-performance single-phase offline UPS with reduced switching time [PDF]

, 2012
A high performance single phase offline UPS with reduced switching time is proposed in the present paper. The proposed UPS can protect loads from supply outage, overvoltage and undervoltage.
Pinto, Delfim A., Sepúlveda, João
core  

Research on the impact of transformer switching-off on core residual magnetism

Zhejiang dianli
Magnetizing inrush current caused by transformer no-load switching can lead to various issues in power grid operations. Techniques such as phase-controlled switching are effective in mitigating these effects， with the key factor being the measurement of ...
HAN Xiao, CHEN Haotian, ZHOU Jia, CHEN Wei, CHEN Deshu   +4 more
doaj   +1 more source

A linearly controlled direct-current power source for high-current inductive loads in a magnetic suspension wind tunnel [PDF]

The NASA Langley 6 inch magnetic suspension and balance system (MSBS) requires an independently controlled bidirectional DC power source for each of six positioning electromagnets.
Daniels, Taumi S., Tripp, John S.
core   +1 more source

Development program for 35 watt traveling-wave tube space amplifier Final report, 30 Jun. 1967 - 30 Sep. 1969 [PDF]

Development of 35-watt, S band, traveling wave tube amplifier for Saturn 5 instrument ...
Dornseif, E. R., Spica, A., Jr., Walters, G. C.   +2 more
core   +1 more source

Fault Analysis and Resolution Measures for Overvoltage Chopping IGBT of Chongqing Rail Transit Line 2 Trains

Chengshi guidao jiaotong yanjiu
[Objective] Multiple incidents of overvoltage chopping IGBT (insulated gate bipolar transistor) faults are observed during train main line operation of Chongqing Rail Transit Line 2, significantly impacting the line normal operation.
Cuijun GU, Xiaodong WU, Guoyin LI, Ji YANG   +3 more
doaj   +1 more source

Development of diagnostic and prognostic algorithms for SF6 puffer circuit breakers from transient waveforms: a validation proposal [PDF]

, 2009
- This paper presents a validation proposal for development of diagnostic and prognostic algorithms for SF6 puffer circuit-breakers reproduced from actual site waveforms.
Kam, Shui-cheong, Ledwich, Gerard
core   +1 more source

A Smart Grid Overvoltage Identification System Associated with Partial Discharge Signal and Dielectric Loss Detection. [PDF]

Sensors (Basel), 2023
Chen G, Zhu Y, Meng Z, Fang W, Xie W, Xu M, Li W.   +6 more
europepmc   +1 more source

The evolution characteristics of leakage current in traction network surge arresters under complex operating conditions. [PDF]

Sci Rep
Pengxiong W, Lifeng F, Yongqiang G, Fuqiang T.   +3 more
europepmc   +1 more source

Distributed photovoltaic systems: Utility interface issues and their present status [PDF]

Major technical issues involving the integration of distributed photovoltaics (PV) into electric utility systems are defined and their impacts are described quantitatively.
Hassan, M., Klein, J.
core   +1 more source

Optimizing switching sequences in AC-AC converters for enhanced safety and performance in conveyor systems. [PDF]

Sci Rep
Dhandapani V, Balasubramanian G.
europepmc   +1 more source