US 12,438,489 B2
Common mode noise cancelling electric motor system
Junghoon Kim, Ann Arbor, MI (US); Muhammad Hussain Alvi, Troy, MI (US); Mohammad F. Momen, Rochester Hills, MI (US); and Yilun Luo, Ann Arbor, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Jun. 7, 2023, as Appl. No. 18/330,444.
Prior Publication US 2024/0413777 A1, Dec. 12, 2024
Int. Cl. H02P 25/22 (2006.01); H02M 1/00 (2006.01); H02M 7/48 (2007.01); H02P 27/06 (2006.01); H02M 1/14 (2006.01); H02P 101/45 (2016.01)
CPC H02P 27/06 (2013.01) [H02M 1/0009 (2021.05); H02M 7/48 (2013.01); H02M 1/14 (2013.01); H02P 2101/45 (2015.01)] 19 Claims
OG exemplary drawing
 
1. An electric motor configuration comprising:
a dual output multilevel inverter including a first set of alternating current (AC) phase outputs and a second set of multi-phase AC phase outputs with the first set of AC phase outputs providing a current, each phase output of the first set of AC phase outputs corresponding to a phase output of the second set of AC phase outputs, and wherein each phase output of the first set of AC phase outputs is offset from the corresponding phase output of the second set of phase outputs by 180 degrees;
an electric motor including a first set of motor windings and a second set of motor windings configured antiparallel to the first set of motor windings, the first set of motor windings being connected to the first set of AC phase outputs and the second set of motor windings being connected to the second set of AC phase outputs, and wherein the electric motor includes a mechanical rotation output; and
wherein the first set of motor windings includes a first neutral node and the second set of motor windings includes a second neutral node, and wherein the first neutral node is connected to the second neutral node such that the first and second neutral node are electrically connected in at least one mode of operations, the at least one mode of operations including actively controlling balance and fault tolerance between windings of the first set of motor windings and windings of the second set of motor windings using an actively controlled switch.