Results 71 to 80 of about 16,886,585 (187)

Flexible Power Electronic Transformer for Power Flow Control Applications [PDF]

Journal of Operation and Automation in Power Engineering, 2007
This paper proposes a Flexible Power Electronic Transformer (FPET) for the application in the micro-grids. The low frequency transformer is usually used at the Point of Common Coupling (PCC) to connect the low voltage grid and utility network to each ...
J. Fallah Ardeshir, A. Ajami, A. Jalilvand, A. Mohammadpour   +3 more
doaj  

Application of electro-optic modulation technique for PD monitoring of power transformers

Partial discharge (PD) detection is an important technique for assessing the health of high voltage power transformers. A partial discharge signal within an oil-filled power transformer may reach a winding first, then travel along the winding to the ...
Sutton, Simon, Tian, Y., Lewin, P.L., Swingler, S.G., Hao, L., Wilkinson, J.S.   +5 more
core   +1 more source

Feasibility of high-frequency alternating current power for motor auxiliary loads in vehicles

, 2011
This paper presents a feasibility study into the application of a 100-V, 50-kHz high-frequency ac (HFAC) network for powering automotive electrical auxiliaries. The study is focused on motor-actuated loads and is divided into two sections.
Nicholas D. Vaughan, James Marco, Marco, James, Antaloae, Ciprian C., Vaughan, Nicholas D., Ciprian C. Antaloae   +5 more
core   +1 more source

Transformer-based forecasting for high-frequency natural gas production data

Energy and AI
Accurate prediction of natural gas well production data is crucial for effective resource management and innovation, particularly amid the global transition to sustainable energy. Traditional models struggle with high-frequency, high-dimensional datasets
Saifei Ma, Tiantian Zhang, Haibo Wang, Haoyu Wang, Nan Li, Haiwen Zhu, Jianjun Zhu, Jianli Wang   +7 more
doaj   +1 more source

Broadband Transfer Characteristics of DC Electronic Current Transformers

IEEE Access
The frequent operation of the switching devices inside the converter valve (mainly composed of thyristors) and other equipment in the converter station of ultra-high voltage direct current (UHVDC) transmission system generates a large number of high ...
Songyu Yang, Jian Le, Jing Wang, Weihao Wang   +3 more
doaj   +1 more source

Bridging in contaminated transformer oil under DC and AC electric field

, 2013
One of the key components in high voltage transmission and distribution systems are power transformers and their consistent operation is of utmost importance to energy utilities and users.
Wilson, G, Mahmud, S., Jarman, P, Golosnoy, I. O., Mahmud, S, Chen, G., Wilson, G., Golosnoy, I O, Chen, G, Jarman, P.   +9 more
core   +1 more source

Experimental studies of influence of DC and AC electric fields on bridging in contaminated transformer oil

, 2015
Analysis of real operating condition revealed that HVDC transformers experience combined effect of DC biased AC electric field. The dynamics of pressboard particle in contaminated transformer oil under the influence of DC, AC and DC biased AC electric ...
Mahmud, S., Golosnoy, I.O., Chen, G., Wilson, G., Jarman, P.   +4 more
core   +1 more source

UHF diagnostic monitoring techniques for power transformers [PDF]

, 2004
This paper initially gives an introduction to ultra-high frequency (UHF) partial discharge monitoring techniques and their application to gas insulated substations.
Bennoch, C.J., Hunter, Ian, B.B., Judd, M.D., Yang, L.   +3 more
core   +1 more source

Application of High Frequency Rotary Transformer for Separately Excited Synchronous Generator in Offshore Wind Turbine

This paper proposes a novel high frequency rotary transformer (HFRT) for a separately excited synchronous generator (SESG) used in offshore wind turbines.
Lu, J, Cole, Frank, Li, Xiaokun
core   +1 more source

Partial Discharge Location within a Transformer Winding using Principal Component Analysis

, 2011
Partial discharge (PD) may occur in a transformer winding due to ageing processes, operational over stressing or defects introduced during manufacture. The presence of PD does not necessarily indicate imminent failure of the transformer but it will lead ...
Abd Rahman, M S, Hao, L, Lewin, P L
core   +1 more source