Publication: Transformerless DC traction power conversion system design for light-rail-transit (LRT)
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Date
2017
Authors
Chua T.Z.Y.
Ong Y.T.
Toh C.L.
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Electrical and Electronics Engineers Inc.
Abstract
Malaysia Light Rail Transit (LRT) traction network is fed by 750 V DC system. A rectifier transformer (zigzag transformer) and a twelve-pulse traction rectifier are the main equipment to step down and rectify the AC power. In order to eliminate the bulky rectifier transformer in the conventional design, this paper presents a feasibility study on a two-stage power conversion system using purely power electronics converters. The proposed system consists of a six-pulse controlled rectifier, low-pass filter and a buck converter. The six-pulse controlled rectifier will step down and rectify the 33 kV AC grid. The generated DC voltage will be filtered and fine-tuned to reach the desired DC voltage level using a 2 kHz buck converter. The design of the proposed system will be fully discussed and simulated using MATLAB/Simulink. Simulation results with full analysis are enclosed. � 2017 IEEE.
Description
DC-DC converters; Electric rectifiers; Energy conversion; Low pass filters; MATLAB; Rectifying circuits; Urban transportation; Buck converters; Controlled rectifier; Conventional design; Light rail transit (LRT); Power conversion systems; Power electronics converters; Rectifier transformers; Traction power; Light rail transit