Title
Single-phase on-board integrated battery charger based on a nine-phase machine
Abstract
An obvious obstacle to a wider utilization of electric vehicles (EVs) is the absence of a widely available charging network. Direct charging of EV batteries with dc voltage in charging stations requires deployment of expensive power electronics equipment. On the other hand, placing the same equipment on-board an EV would enable access to any three-phase grid outlet, but would substantially increase the vehicle cost, weight and volume. A multitude of solutions have been proposed to integrate the charger using the already existing equipment, which normally serves the propulsion operating mode of the vehicle. However, only a few of them have the advantage of torque-free fast charging that is accomplished without any hardware reconfiguration. The primary aim of these integrated on-board chargers is to provide fast charging by enabling connection to a three-phase grid. These structures also enable slower charging by connection to a single-phase grid. This paper examines single-phase charging capabilities of an integrated charger using a nine-phase machine. The charger does not require any reconfiguration or additional elements other than those used in propulsion mode and it does not produce torque during the charging. Additionally, the charger can provide energy recuperation to the grid. The operating principle relies on additional degrees of freedom of multiphase machines, to draw currents through non-flux and non-torque producing planes of the machines.
Year
DOI
Venue
2014
10.1109/IECON.2014.7048970
IECON
Keywords
Field
DocType
battery powered vehicles,power electronics,secondary cells,ev batteries,dc voltage,direct charging,electric vehicles,nine-phase machine,power electronics equipment,single-phase grid,single-phase on-board integrated battery charger,torque-free fast charging,battery chargers,integrated onboard charger,multiphase machines,propulsion,torque,harmonic analysis,topology
Torque,Propulsion,Battery charger,Voltage,Control engineering,Power electronics,Engineering,Electrical engineering,Trickle charging,Grid,Control reconfiguration
Conference
ISSN
Citations 
PageRank 
1553-572X
0
0.34
References 
Authors
2
4
Name
Order
Citations
PageRank
Nandor Bodo1212.44
Ivan Subotic2211.77
Emil Levi333149.79
Martin Jones419427.55