Electromagnetic influences of autotransformer overvoltage traction networks on pipelines

Power Quality Improvement in Traction Power Supply Networks

AC railway traction loads are usually huge single phase loads. As a result, a significant amount of Negative Sequence Current (NSC) is injected into utility grid. Moreover, harmonics and consumption ofreactive power are further power quality problems that the supply network is encountering. In this paper, acompensation strategy with the aid of Railway Power Conditioner (RPC) is proposed to over...

Optimization of Fan Geometry for Urban Train Traction Motors using Coupled Numerical Electromagnetic and Thermal Analysis

One of the most important parameters in designing electrical motors is heat generation by the motor and the way it is dissipated. Temperature rising reduce efficiency and reliability of traction motors and leads to failure. In this paper, an urban train traction motor in a 3D computational fluid dynamics (CFD) simulation has been investigated. Maxwell software for electromagnetic simulation and...

Electromagnetic Interference Problems Between Power Lines and Metal Pipelines

Influences of Traction Load Shock on Artificial Partial Discharge Faults within Traction Transformer—Experimental Test for Pattern Recognition

Shuaibing Li ID , Guoqiang Gao, Guangcai Hu, Bo Gao, Haojie Yin, Wenfu Wei * ID and Guangning Wu School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China; [email protected] (S.L.); [email protected] (G.G.); [email protected] (G.H.); [email protected] (B.G.); [email protected] (H.Y.); [email protected] (G.W.) * Correspondence...

Studies on an Electromagnetic Transient Model of Offshore Wind Turbines and Lightning Transient Overvoltage Considering Lightning Channel Wave Impedance

In recent years, with the rapid development of offshore wind turbines (WTs), the problem of lightning strikes has become more and more prominent. In order to reduce the failure rate caused by the transient overvoltage of lightning struck offshore WTs, the influencing factors and the response rules of transient overvoltage are analyzed. In this paper, a new integrated electromagnetic transient m...