Аnalysis of operating modes of single­phase current­source rectifier with rectangular­stepped pulse­width modulation

Authors

DOI:

https://doi.org/10.15587/1729-4061.2018.131150

Keywords:

active current-source rectifier, power factor, pulse-width modulation, mathematical model

Abstract

The operating modes of the single-phase active current-source rectifier in the case of rectangular-stepped pulse-width modulation and load in the form of DC traction motor are investigated. The single-phase bridge rectifier circuit with a discharge diode is considered. The mathematical model of the rectifier is developed and the main ratios for pulse-width modulation with rectangular-stepped modulating signal are determined. On the computer model, electromagnetic processes at three modulation frequencies (900, 1,200, 1,800 Hz) are studied. The features of the effect of the modulation depth and frequency on the rectifier power factor and the total harmonic voltage and current distortion in the mains supply are determined.

The DC motor for today remains the main type of the traction motor of the 25 kV, 50 Hz AC mainline electric locomotives of alternating current in Ukraine and in some other countries. To power such motors, diode or thyristor rectifiers are used. At the same time, it is known that converters on fully controlled semiconductor devices provide higher power efficiency.

The studies allow determining what values of modulation frequency and depth provide a high power factor (more than 0.9) and minimum total harmonic voltage and current distortion distortions in the mains supply. This allows finding rational approaches to the selection of power circuits and control algorithms for active converters in the traction electric drive of electric locomotives. The efficiency of increasing the power factor and reducing the total harmonic voltage and current distortion can be achieved, first of all, by reducing the power consumption for traction of trains.

According to the set of selected comparison criteria, the active current-source rectifier with a modulation frequency of 1,200 Hz is the most suitable for implementation in the traction electric drive of the electric locomotive. Provision of high power characteristics in a wide range of traction loads can be achieved in the multi-zone circuit of such a converter.

Author Biographies

Alexey Krasnov, Kharkiv Department of Railway Transport Design and Survey Institute, JSC “UZ” Yevhena Kotlyara str., 7, Kharkiv, Ukraine, 61052

Leading Researcher

Department of railway infrastructure and traction

Borys Liubarskyi, National Technical University “Kharkiv Polytechnic Institute” Kyrpychova str., 2, Kharkiv, Ukraine, 61002

Doctor of Technical Sciences, Professor

Department of electrical transport and diesel locomotive

Vladimir Bozhko, Kharkiv Department of Railway Transport Design and Survey Institute, JSC “UZ” Yevhena Kotlyara str., 7, Kharkiv, Ukraine, 61052

PhD, Senior Researcher

Department of railway infrastructure and traction

Оleksandr Petrenko, O. M. Beketov National University of Urban Economy in Kharkiv Marshala Bazhanova str., 17, Kharkiv, Ukraine, 61002

PhD, Associate Professor

Department of electrical transport

Oksana Dubinina, National Technical University “Kharkiv Polytechnic Institute” Kyrpychova str., 2, Kharkiv, Ukraine, 61002

Doctor of Pedagogical Sciences, PhD, Associate Professor

Department of computer mathematics and data analysis

Ramil Nuriiev, National Technical University “Kharkiv Polytechnic Institute” Kyrpychova str., 2, Kharkiv, Ukraine, 61002

Postgraduate Student

Department of electrical transport and diesel locomotive

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Published

2018-05-15

How to Cite

Krasnov, A., Liubarskyi, B., Bozhko, V., Petrenko О., Dubinina, O., & Nuriiev, R. (2018). Аnalysis of operating modes of single­phase current­source rectifier with rectangular­stepped pulse­width modulation. Eastern-European Journal of Enterprise Technologies, 3(9 (93), 50–57. https://doi.org/10.15587/1729-4061.2018.131150

Issue

Vol. 3 No. 9 (93) (2018): Information and controlling system

Section

Information and controlling system

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Copyright (c) 2018 Alexey Krasnov, Borys Liubarskyi, Vladimir Bozhko, Оleksandr Petrenko, Oksana Dubinina, Ramil Nuriiev

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