'Institute of Electrical and Electronics Engineers (IEEE)'
Doi
Abstract
This paper presents a comprehensive comparison
of a current-source converter and a voltage-source converter for
three-phase electric vehicle (EV) fast battery chargers. Taking
into account that the current-source converter (CSC) is a natural
buck-type converter, 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. On
the other hand, taking into account that the voltage-source
converter (VSC) is a natural boost-type converter, the output
voltage is always greater than the maximum instantaneous value
of the power grid phase-to-phase voltage, and consequently, it is
necessary to use a dc-dc buck-type converter for applications as
EV fast battery chargers. Along the paper is described in detail
the principle of operation of both the CSC and the VSC for EV
fast chargers, as well as the main equations of the power theory
and current control strategies. The comparison between both
converters is mainly established in terms of the total harmonic
distortion of the grid current and the estimated efficiency for a
range of operation between 10 kW and 50 kW
