Electric Vehicle Charging Station with an Energy Storage Stage for Bipolar DC Bus

Authors(5) :-Adarsha H, ARUNA H E, Shwetha S A, Varun Deekshith K V, Somashekaraiah B S

This paper proposes a balancing approach for an electric vehicle bipolar dc charging station at the megawatt level, enabled by a grid-tied neutral point clamped converter. The work uses the presence of an energy storage stage with access to both of the dc buses to perform the complementary balance. This is aiming to reduce the hardware requirements of the system and maximize the usage of the ESS, whose main function is to perform the energy management related tasks. To meet this purpose, a three-level dc-dc interface is employed, allowing tocompensate the dc currents with a single ESS. In order to prevent the appearance of even-order harmonics in the input current during asymmetrical operation, an alternative switching sequence for the central converter is proposed. Results indicate that, without altering dramatically the charging process of the ESS, it is possible to cover the whole load scenario without the need of a balancing circuit. This allows the use of off-the-shelf products both for the rectifier and the fast chargers. In this paper, simulation and experimental results are presented to validate the proposed balancing strategy.

Authors and Affiliations

Adarsha H
HOD, Department of EEE, HMSIT, Tumkur, Karnataka, India
Students, HMSIT, Tumkur, Karnataka, India
Shwetha S A
Students, HMSIT, Tumkur, Karnataka, India
Varun Deekshith K V
Students, HMSIT, Tumkur, Karnataka, India
Somashekaraiah B S
Students, HMSIT, Tumkur, Karnataka, India

Bipolar dc bus, electric vehicles, energy storage stage, fast charger, power balance management, three-level dc-dc converter.

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Publication Details

Published in : Volume 4 | Issue 6 | May-June 2018
Date of Publication : 2018-05-08
License:  This work is licensed under a Creative Commons Attribution 4.0 International License.
Page(s) : 832-837
Manuscript Number : CSEIT1846157
Publisher : Technoscience Academy

ISSN : 2456-3307

Cite This Article :

Adarsha H, ARUNA H E, Shwetha S A, Varun Deekshith K V, Somashekaraiah B S, "Electric Vehicle Charging Station with an Energy Storage Stage for Bipolar DC Bus", International Journal of Scientific Research in Computer Science, Engineering and Information Technology (IJSRCSEIT), ISSN : 2456-3307, Volume 4, Issue 6, pp.832-837, May-June-2018.
Journal URL : http://ijsrcseit.com/CSEIT1846157

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