US 12,355,369 B2
Dual-purpose drive and charger systems and methods thereof
Tianjun Fu, Fargo, ND (US); Yuheng Wu, Fayetteville, AR (US); Long Wu, Fargo, ND (US); Danielle Li, Fargo, ND (US); and Eric Vilar, Dubuque, IA (US)
Assigned to Deere & Company, Moline, IL (US)
Filed by Deere & Company, Moline, IL (US)
Filed on Aug. 3, 2021, as Appl. No. 17/392,540.
Prior Publication US 2023/0038561 A1, Feb. 9, 2023
Int. Cl. H02M 7/797 (2006.01); B60L 15/20 (2006.01); B60L 53/24 (2019.01); B60L 53/62 (2019.01); H02J 7/00 (2006.01); H02M 3/335 (2006.01); H02P 27/08 (2006.01)
CPC H02M 7/797 (2013.01) [B60L 15/20 (2013.01); B60L 53/24 (2019.02); B60L 53/62 (2019.02); H02J 7/0068 (2013.01); H02J 7/00712 (2020.01); H02M 3/33571 (2021.05); H02P 27/08 (2013.01); B60L 2210/10 (2013.01); B60L 2210/30 (2013.01); H02J 2207/20 (2020.01)] 17 Claims
OG exemplary drawing
 
1. A system comprising:
an inverter configured to operate in at least one of a charging mode or a drive mode;
a cascaded direct current (DC)-DC converter, the cascaded DC-DC converter including
a first portion of the inverter, the first portion of the inverter including a half-bridge,
a first DC-DC converter including
a first portion of the first DC-DC converter, the first portion of the first DC-DC converter being a single active bridge, the single active bridge being a half-bridge for active switching control, and
a second portion of the first DC-DC converter, the second portion of the first DC-DC converter being a first portion of the cascaded DC-DC converter,
a second DC-DC converter; and
at least one controller configured to, selectively couple, via at least one first switch, the first portion of the
inverter to the first portion of the cascaded DC-DC converter during the charging mode, the first portion of the cascaded DC-DC converter including two passive bridges, the two passive bridges being two diode bridges for rectification,
decouple the inverter from the first portion of the cascaded DC-DC converter and selectively couple, via at least one second switch, the inverter to a second portion of the cascaded DC-DC converter during the drive mode, the second portion of the cascaded DC-DC converter including the second DC-DC converter, and
control the single active bridge such that the single active bridge is configured to operate in accordance with zero voltage switching (ZVS).
 
14. The system of claim 1, wherein the second portion of the cascaded DC-DC converter is not part of the inverter.