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Electrified railway system is a huge single phase load which imposes some serious power quality problems such as negative sequence current (NSC), harmonics, low power factor, pantographs arcs, resonance, electromagnetic interference, etc. to power grid. Several compensation strategies and configurations such as RPC, APQC, HBRPC, and etc. have been introduced up to now. The main problem corresponding...
Due to the complex and nonlinear nature of electric railway supply system the system is a good candidate for the resonance occurrence. Resonance can boost some voltage or current harmonic components and may cause damage to the network equipment. Therefore resonance assessment and finding the resonance frequencies in the electrified railway system is important. In order to evaluate frequency response...
The extension of electrical railway systems causes critical power quality problems in the power grid. This paper presents a kind of Half-Bridge Railway static Power Quality Conditioner (HBRPQC) based on a half-bridge converter which can compensate Negative Sequence Currents (NSC), harmonics and reactive power simultaneously. In this paper, a new multifunctional control strategy based on modified instantaneous...
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