ELECTRIC DRIVE, METHOD FOR THE OPERATION THEREOF, AND SERIAL HYBRID DRIVE TRAIN FOR A MOTOR VEHICLE

摘要

The invention relates to an electric drive, comprising a motor assembly (10) comprising a plurality of electric machines (12) having motor shafts arranged parallel to each other, an output assembly, and a speed-changing stage (26), which is connected to the motor assembly on one side and to the output assembly on the other side and which has a speed-changing sun (34) connected to the output assembly and a plurality of speed-changing planets (28), which are each connected to one of the electric machines (12) and which are each fixed on the motor shafts and arranged annularly around the speed-changing sun (34) and which roll on the speed-changing sun in a torque-transmitting manner. The invention is characterized in that one or more power electronics units connected to one or more voltage sources are provided for controlling the electrical sub-phases of the electric machines (12).