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Mixed Running Simulation of AC-DC Locomotive and AC-DC-AC Locomotive

Author: GuoMingFu
Tutor: ZhaoLiPing
School: Southwest Jiaotong University
Course: Electrical system control and IT
Keywords: Electrified railway AC - DC electric locomotive AC - DC - AC electric locomotive Harmonic
CLC: U264.223
Type: Master's thesis
Year: 2011
Downloads: 78
Quote: 0
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Abstract


With the rapid development of China 's electric railway , electric locomotive load has become one of the main grid harmonic source by more and more attention . To make it easier governance electrified railway harmonics , it is necessary to carry out the harmonic characteristics of the locomotive . This article describes the existing cross - straight- locomotive and AC - DC - AC locomotive models to study the cross - straight electric locomotives with AC - DC - AC current harmonic characteristics of the network side of the electric locomotive . SS4 locomotive is selected as the representative of the AC - DC locomotive models, a detailed analysis of the works of the main circuit and control theory , the mathematical model of the process of the main circuit . CRH2 locomotive is selected as representative models AC - DC - AC electric locomotive CRH2 type AC - DC - AC electric locomotive main circuit structure and working principle are introduced in detail , focusing on the three - level four-quadrant change the works of the main circuit of the inverter control strategy . Summed up the cross - straight electric locomotives and AC - DC - AC harmonic load current characteristics of the electric locomotive traction load current harmonics superimposed theory . In this paper, Matlab / simulink software to build a the SS4 model AC - straight electric locomotive CRH2 type AC - DC - AC electric locomotive simulation model to simulate the different conditions of the locomotive , two derived through the analysis of simulation results the harmonic characteristics of the locomotive . Also established a cross - straight locomotive mixed with a AC - DC - AC locomotive ran simulation model AC - DC locomotive and stable operation of AC - DC - AC locomotives in different working conditions are simulated and analyzed feeder total current harmonic characteristics and variation . This article also the literature CRH2 type of harmonic currents of the electric locomotive Found spectrum analysis and spectrum analysis of the simulation of harmonic currents in the same traction conditions compared , the results are very close , indicating a high degree of accuracy of the simulation model established .

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CLC: > Transportation > Rail transport > Locomotive works > Electric locomotive > A variety of drive electric locomotive > AC electric locomotive > AC - DC - AC electric locomotive
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