US 12,131,864 B2
Transformer with integral inductor
Sagar K. Rastogi, Raleigh, NC (US); and Brij N. Singh, West Fargo, ND (US)
Assigned to Deere & Company, Moline, IL (US)
Filed by DEERE & COMPANY, Moline, IL (US)
Filed on Aug. 8, 2021, as Appl. No. 17/396,726.
Claims priority of provisional application 63/198,281, filed on Oct. 8, 2020.
Prior Publication US 2022/0115180 A1, Apr. 14, 2022
Int. Cl. H01F 27/38 (2006.01); H01F 3/14 (2006.01); H01F 27/25 (2006.01); H01F 27/255 (2006.01); H02M 3/335 (2006.01)
CPC H01F 27/38 (2013.01) [H01F 3/14 (2013.01); H01F 27/255 (2013.01); H02M 3/33584 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A transformer comprising:
a core comprising a perimeter portion joined to a central intervening portion,
wherein the perimeter portion has an open interior,
wherein the central intervening portion is disposed in the open interior of the perimeter portion creating a first opening and a second opening in a space between the central intervening portion and the perimeter portion;
a primary winding wound around the central intervening portion;
a secondary winding wound around the central intervening portion,
wherein the primary winding is capable of electromagnetic interaction with the secondary winding; and
a pair of ferrite members disposed between the primary winding and the secondary winding and arranged on opposite sides of the core outward from a central axis of the central intervening portion of the core to increase a series inductance with the primary winding,
wherein the pair of ferrite members comprise U-shaped members or substantially rectangular members joined to form a unified structure that is hollow to receive the central intervening portion.