Power split transmission structure

A method for controlling a power split transmission structure to direct drive power from a drive through at least three interfaces to at least one output to supply connected consumers, the transmission structure having at least two variator paths each comprising a summation gearbox downstream of the interfaces in which drive power is varied via a mechanical and an electrical path, the transmission structure having power electronics or a hydraulic control device including at least three electric or hydraulic machines arranged in parallel with the summation gearbox of each variator path downstream of the interfaces, and the method simultaneously controls the power electronics or a hydraulic control device and the electric or hydraulic machines in such a way that fluctuations in the power supply to the consumers are compensated for by the electric or hydraulic machines by regulating, via a control device, the summation gearbox of each of the variator paths and modifying a torque, a speed, or both, of the drive power via the power electronics system or the hydraulic control device;

• wherein there are at least three consumers, the at least one output includes a first output, a second output, and a third output, and the at least three interfaces include a first interface, a second interface, and a third interface, configured to respectively direct the drive power from a node to the first output, the second output, and the third output, each output coupled to at least one of the three consumers;
• wherein a first summation gearbox along the first interface couples to the node via a first power path and the first output via a second power path, and a second summation gearbox along the second interface couples to the node via a third power path and the second output via a fourth power path;
• wherein the power electronics system or a hydraulic control device along the third interface couples to the node via a fifth power path and the third output via a sixth power path;
• wherein the power electronics system or the hydraulic control device selectively modifies a torque, a speed, or both, of the drive power from the first summation gearbox via a seventh power path, from the second summation gearbox via an eighth power path, and from the node via the fifth power path;
• and
• wherein the at least three electric or hydraulic machines include a first electric or hydraulic machine coupled in between the first summation gearbox and the power electronics system or the hydraulic control device via the seventh power path, a second electric or hydraulic machine coupled in between the second summation gearbox and the power electronics system or the hydraulic control device via the eighth power path, and a third electric or hydraulic machine coupled in between the node and the power electronics system or the hydraulic control device via the fifth power path;
• and
• wherein each of the electric or hydraulic machines is operable in a generator mode to compensate for a power oversupply and a motor mode to compensate for a power shortfall or a power oversupply at the at least one outlet of the interfaces.