Part of #Utilization of Hybrid Filter to Eliminate Harmonics of 25 kV AC Electric Railway# :
Publishing year : 2014
Conference : 6th Iranian Conference on Electrical and Electronic Engineering
Number of pages : 5
Abstract: Electric trains inject a large amount of harmonics into the power network and consume high reactive power which makes them one of the worst load types to be used in power systems. These loads have non-linear characteristics and cause harmonic distortion. Filtering is one of the common ways used to eliminate harmonics and compensate reactive power. Filters are categorized into three types: passive, active and hybrid. Both the passive and active filters have their own deficiencies while hybrid filters benefit from the benefits of both former filters while overcoming their deficiencies. In this paper, active, passive and hybrid filters are discussed and then an appropriate hybrid structure is introduced. Thereupon a harmonic model of an intercity electric train is presented and the application of the proposed hybrid filter structure to the train is simulated using MATLAB / SIMULINK. The obtained results demonstrate the effectiveness of the use of such a hybrid filter structure in the elimination of harmonic components and reactive power compensation.