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ADVANCED TOPICS IN ELECTRICAL ENGINEERING – ATEE 2017

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Configuring and Experimental Evaluation of a Laboratory Model for Filtering and Regeneration in Active DC Traction Substations

The objective of the paper is the presentation of a laboratory model of a system for active filtering and regeneration (SISFREG) developed through an applied research collaborative project in the frame of Partnerships in priority area programme during 2014-2016. The system allows the conversion of the DC traction substations into “active substations”. The main component of the laboratory model is the configurable voltage source inverter (input voltage range 200-560 V DC; output voltage 3x400 V AC; rated power 30 kVA) adequately interfaced with the DC-line and properly controlled in closed loop. The control and monitoring algorithm was implemented on the dSPACE 1103 system. The background of the methodology and the testing structure configuration were made based on the actual conditions prevailing in a substation for DC traction and given the equipment available in the laboratory. The experimental structure contains: the equivalent of the transformer-rectifier traction group; the equivalent of the DC traction motors; the possibility of system to be connected, on the one hand, in the connection point of the traction transformer, and, on the other hand, with the DC line (equivalent catenary). This paper presents several experiments conducted in accordance with the testing protocol, the analysis of the experimental results and the resulted performance of the system, in terms of energy, during both active filtering and regeneration operation modes.

Author(s):

Alexandru BITOLEANU    
University of Craiova
Romania

Mihaela POPESCU    
University of Craiova
Romania

Vlad Constantin SURU    
University of Craiova
Romania

 

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