US 11,951,855 B2
Integrated three-phase AC charger for vehicle applications with dual-inverter drive
Peter Lehn, Toronto (CA); and Philippe Gray, Stouffville (CA)
Assigned to THE GOVERNING COUNCIL OF THE UNIVERSITY OF TORONTO ELEAPPOWER LTD., Toronto (CA)
Filed by THE GOVERNING COUNCIL OF THE UNIVERSITY OF TORONTO, Toronto (CA); and ELEAPPOWER LTD., Toronto (CA)
Filed on Mar. 21, 2023, as Appl. No. 18/124,357.
Application 18/124,357 is a continuation of application No. 17/272,219, granted, now 11,607,965, previously published as PCT/CA2019/051225, filed on Aug. 30, 2019.
Claims priority of provisional application 62/725,711, filed on Aug. 31, 2018.
Prior Publication US 2023/0234461 A1, Jul. 27, 2023
Int. Cl. B60L 53/22 (2019.01); B60L 50/51 (2019.01); B60L 50/60 (2019.01); B60L 53/18 (2019.01); B60L 53/24 (2019.01); B60L 55/00 (2019.01); H02M 1/14 (2006.01); H02M 5/458 (2006.01); H02M 7/5387 (2007.01); H02P 27/08 (2006.01)
CPC B60L 53/22 (2019.02) [B60L 50/51 (2019.02); B60L 50/60 (2019.02); B60L 53/24 (2019.02); B60L 55/00 (2019.02); H02M 1/14 (2013.01); H02M 5/4585 (2013.01); H02M 7/53871 (2013.01); H02P 27/08 (2013.01); B60L 53/18 (2019.02); B60L 2210/30 (2013.01); B60L 2210/40 (2013.01); B60L 2210/42 (2013.01); B60L 2220/12 (2013.01); B60L 2220/54 (2013.01); H02J 2310/48 (2020.01)] 20 Claims
OG exemplary drawing
 
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.