Inclusive Design and Development of Front-End Multiphase Rectifier With Reduced Magnetic Rating and Improved Efficiency

Inclusive Design and Development of Front-End Multiphase Rectifier With Reduced Magnetic Rating and Improved Efficiency

This article proposes a 20-pulse asymmetric multiphase converter (AMPC) suitable for medium- and high-power applications. Unlike the other state-of-the-art 20-pulse delta-connected autotransformers, the proposed delta-connected AMPC has an ability to reduce input harmonics, maintains high efficiency...

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Bibliographic Details
Published in:IEEE journal of emerging and selected topics in power electronics Vol. 8; no. 3; pp. 2989 - 3000
Main Authors: Saravana Prakash, P., Kalpana, R., Singh, Bhim
Format: Journal Article
Language:English
Published: Piscataway IEEE 01-09-2020
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
20-pulse ac–dc converter
asymmetric
autoconnected transformer
Autotransformers
Configurations
Converters
Efficiency
Energy conversion efficiency
Harmonic analysis
Harmonic distortion
IEC Standards
Multiphase
phase staggering
Power electronics
Power factor
Power quality
Rectifiers
Windings
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Description
Summary:This article proposes a 20-pulse asymmetric multiphase converter (AMPC) suitable for medium- and high-power applications. Unlike the other state-of-the-art 20-pulse delta-connected autotransformers, the proposed delta-connected AMPC has an ability to reduce input harmonics, maintains high efficiency, and requires a magnetic rating of only 30.12% of the nominal load; thereby, a significant reduction in space, weight, and overall cost required is the salient features of the proposed AMPC. A detailed power quality performance analysis and an efficiency calculation are discussed. First, the proposed AMPC configuration is simulated in MATLAB/Simulink environment for evaluating its viability under different loading conditions, and the results are illustrated. A detailed comparison of the proposed AMPC configuration with other multipulse transformers is included, which confirms the merits of the proposed system. Also, a prototype is developed, and the experimental measurements obtained are presented to validate the feasibility and operability of the proposed AMPC. The proposed AMPC offers a total harmonic distortion of 3.7% and can operate at near-unity power factor complying with the IEEE and IEC standards.
ISSN:2168-6777
2168-6785
DOI:10.1109/JESTPE.2019.2949138