This document describes a novel low-cost integrated on-board charger topology for electric vehicles that uses a single inductor for all power stages to reduce costs. It operates in three modes: motoring, driving, and charging. The charger uses an AC/DC power converter with filter and only one power stage for both charging and as a DC/DC converter by sharing the same inductor. A PI controller compares reference and actual torque values and filtered inductor current to the reference to control operation. The method achieves a power factor over 0.995 and total harmonic distortion under 5%.

1. Method1:
A Novel Low Cost Integrated On-board
Charger Topology for Electric Vehicles and
Plug-in Hybrid Electric Vehicles
A novel low cost integrated on-board charger has minimum number of
switches and only one inductor for all power stages to reduce system
cost.
Schematic Diagram of Charger Fig[1]

2. Modes of operation:
1. motoring,
2. driving, and
3. charging mode
Table[2]
AC/DC power converter with filter provide an efficient charger which
uses only one power stage as the charger and the DC/DC converter
shares the same inductor.
Controller operation:

3. The purpose of using PI controller is for comparing the reference
torque with actual torque .Filtered inductor current is same with
reference inductor current and output is applied to another
controller.[3]
Conclusions:
An efficient on-board charger with power factor >0.995 and total
harmonic distortion <5% was obtained in this method.