Three-phase three-level current-source converter for EVs fast battery charging systems

This paper presents a three-phase three-level fast battery charger for electric vehicles (EVs) based in a current-source converter (CSC). Compared with the traditional voltage-source converters used for fast battery chargers, the CSC can be seen as a natural buck-type converter, i.e., the output vol...

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Bibliographic Details
Published in2015 IEEE International Conference on Industrial Technology (ICIT) pp. 1401 - 1406
Main Authors Monteiro, Vitor, Exposto, Bruno, Pinto, J. G., Sepulveda, M. J., Nogueiras Melendez, Andres A., Afonso, Joao L.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.03.2015
Subjects
Batteries
Battery chargers
Current control
Current-Source Converter
Electric Vehicle
Fast Battery Charger
Phase locked loops
Power grids
Simulation
Voltage control
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Summary:This paper presents a three-phase three-level fast battery charger for electric vehicles (EVs) based in a current-source converter (CSC). Compared with the traditional voltage-source converters used for fast battery chargers, the CSC can be seen as a natural buck-type converter, i.e., the output voltage can assume a wide range of values, which varies between zero and the maximum instantaneous value of the power grid phase-to-phase voltage. Moreover, using the CSC it is not necessary to use a dc-dc back-end converter in the battery side, and it is also possible to control the grid current in order to obtain a sinusoidal waveform, and in phase with the power grid voltage (unitary power factor). Along the paper is described in detail the proposed CSC for EVs fast battery charging systems: the circuit topology, the power control theory, the current control strategy and the grid synchronization algorithm. Several simulation results of the EV fast battery charger operating with a maximum power of 50 kW are presented.
DOI:10.1109/ICIT.2015.7125293