Abstract
A two-stage converter connects the input grid voltage to a pack of batteries with the voltage varying between 48-400 V, depending on the size and the range of the vehicle, with battery-operated electric and Plug-in Hybrid Electric Vehicles (PHEVs). This article offers a unique built-in converter that can interface with both high voltage (HV) and low voltage (LV) batteries. For all car architectures a universal charger that can accommodate this wide range of battery pack voltages is suitable. The novel integrated buck and boost converter (IBBC) is the proposed converter supplied using AC-DC driver at the front end mode. The main objective of this paper is to show a universal battery charger for an EV with a high power factor (PFC) and a small total harmonic distortion (THD) in addition to the high power density. A PFC converter is formed without any auxiliary circuit to balance the output voltage dependence of the battery against fluctuations in the ac grid input voltage, which in turn reduces the cost of additional circuit. A closed loop controller scheme is used to adjust for variations in the broad range output voltage and load. The proposed topology’s detailed operation is simulated using the MATLAB/Simulink software and achieved a THD of 1.18%.
Highlights
The rising popularity of battery electric vehicles (BEVs) and plug-in hybrid electric vehicles (PHEVs), known as electric vehicles (EVs), can be attributed to a number of significant advantages, including reduced global greenhouse gas (GHG) emissions [1] and superior vehicular performance [2], as well as progressing toward cost competitiveness with internal combustion engine (ICE) vehicles in the long run
The main objective of this paper is to show a universal battery charger for an EV with a high power factor (PFC) and a small total harmonic distortion (THD) in addition to the high power density
To overcome these challenges / drawbacks, in this paper a modified integrated Buck and Boost Converter for a Universal Battery Charger of an EV is proposed. In this the buck converter is cascaded with two boost converters connected in parallel which in turn is interleaved boost converter through which the EV batteries can be charged to either high voltage or low voltage with improved THD, power factor and the usage of components are less compared with the existing models which are discussed in the literature
Summary
The rising popularity of battery electric vehicles (BEVs) and plug-in hybrid electric vehicles (PHEVs), known as electric vehicles (EVs), can be attributed to a number of significant advantages, including reduced global greenhouse gas (GHG) emissions [1] and superior vehicular performance [2], as well as progressing toward cost competitiveness with internal combustion engine (ICE) vehicles in the long run. To overcome these challenges / drawbacks, in this paper a modified integrated Buck and Boost Converter for a Universal Battery Charger of an EV is proposed.
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