Patent ID: 11951855
Assignee: THE GOVERNING COUNCIL OF THE UNIVERSITY OF TORONTO ELEAPPOWER LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 0:
1. A circuit for integrated three-phase AC charging on an electric vehicle or a hybrid-electric vehicle coupled to an AC grid, the circuit comprising:
a dual inverter drive system including an upper charging stage including a first energy storage and a first voltage source converter (VSC1), a lower charging stage including a second energy storage and a second voltage source converter (VSC2), coupled to a motor coupled between the first voltage source converter and the second voltage source converter, the motor having three or more motor windings each coupled to a corresponding AC terminal of each of the VSC1 and the VSC2;
a current source converter (CSC) having a set of CSC AC connections for coupling to the AC grid, a set of CSC DC connections, and a plurality of controllable CSC switches which are operable to control an energy flow between the AC grid and the dual inverter drive system through the CSC;
wherein a leakage inductance of the motor is used to provide an inductance for operating the CSC, and
wherein a back-emf (Vd) is provided by differentially connecting connections of the dual inverter drive system to the set of CSC DC connections to allow for operation of the circuit in a plurality of operation modes during charging through adjustment of the back-emf Vd by controlling the switches of the VSC1 and VSC2.