Harmonic Mitigation in Traction Supply Substation Using Cascaded H-Bridge Converter

The conventional three-level inverter has been proposed to act as a recuperating converter in Traction Supply Substation. This converter is mainly used to feed back the regenerative braking energy to the grid. However, passive filter is desired to mitigate the current and voltage harmonics. Therefor...

Full description

Saved in:
Bibliographic Details
Published inInternational Journal of Power Electronics and Drive Systems Vol. 9; no. 4; p. 1745
Main Authors Awalludin, A., Toh, C. L.
Format Journal Article
LanguageEnglish
Published Yogyakarta IAES Institute of Advanced Engineering and Science 01.12.2018
Subjects
Alternating current
Computer simulation
Electric converters
Electric potential
Harmonic distortion
Pulse duration modulation
Regenerative braking
Substations
Traction
Waveforms
Online AccessGet full text

Cover

More Information
Summary:The conventional three-level inverter has been proposed to act as a recuperating converter in Traction Supply Substation. This converter is mainly used to feed back the regenerative braking energy to the grid. However, passive filter is desired to mitigate the current and voltage harmonics. Therefore, this paper investigates the possibility to use a seven-level Cascaded H-Bridge (CHB) converter as the recuperating converter without additional filtering. The proposed converter is modeled with MATLAB/Simulink simulation software. It is then simulated with two potential modulation schemes, namely Phase-Shifted PWM (PS-PWM) and Phase-Disposition PWM (PD-PWM). The quality of AC waveforms produced by these two modulation methods is compared and studied. The results show that PS-PWM technique is preferable for this application as it offered a clean AC current waveform with less than 5% harmonic distortion. However, a twenty-one-level CHB was predicted to comply with the 8% voltage harmonic requirement.
ISSN:2088-8694
2088-8694
DOI:10.11591/ijpeds.v9.i4.pp1745-1754