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A bidirectional buck–boost dc–dc converter and its control is presented for vehicle charging as well as for vehicle-to-grid energy transfer. The cascaded buck–boost topology allows overlapping input and output voltage ranges and a higher intermediate dc-bus voltage where the electric drivetrain traction inverter can be connected. The intermediate dc-link capacitor voltage is varied to improve the...
The modeling, simulation, sizing and implementation of a range extender for an existing electric vehicle are presented in this paper. The objective is to re-engineer an existing E-truck built with a Li-ion battery pack to increase its initial range of 67 miles to 100 miles. The range extender has been incorporated along with a compact and fault-tolerant battery charger to increase the range. Considering...
This paper presents an integrated traction machine and converter topology that has bidirectional power flow capability between an electric vehicle and the DC or AC supply or grid. The inductances of the traction motor windings are used for bi-directional converter operation to transfer power eliminating the need for extra inductors for the charger and vehicle-to-grid (V2G) converter operation. The...
A bi-directional buck-boost DC-DC converter is presented for vehicle charging as well as vehicle to grid (V2G) energy transfer. The chosen cascaded buck-boost topology allows overlapping input and output voltage ranges and a higher intermediate DC bus voltage where the electric drivetrain traction inverter can be connected. The intermediate DC-link capacitor voltage is varied to improve the transient...
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