Patent attributes
A drive system for a vehicle includes a first planetary gear set including a first carrier, a second planetary gear set including a second carrier, and a third planetary gear set including a sun gear, a ring gear, a plurality of planetary gears coupling the sun gear to the ring gear, and a third carrier rotationally supporting the plurality of planetary gears. The third planetary gear set is directly coupled to the first carrier and the second carrier. The drive system further includes a first electromagnetic device coupled to the first planetary gear set, a second electromagnetic device coupled to the second planetary gear set, and an output shaft coupled to the first planetary gear set.