Hybrid drive system for work machine

A supplemental energy system for supplying energy to a work machine, the supplemental energy system comprising:

• a drive system including:
• a battery system that generates a supplementary energy supply;
• and
• a motor generator unit electrically coupled with the battery system;
• and
• a controller communicably coupled with the drive system, wherein the controller is configured to control the drive system to direct, towards one or more traction motors of the work machine, a portion of the supplementary energy supply via the motor generator unit.

A method of operating a work machine, the method comprising:

• operating an engine of a drive system of the work machine, the engine generates a first energy supply, the drive system including a generator mechanically coupled with the engine to drive the generator and a motor generator unit mechanically coupled with the generator to drive the generator;
• operating a battery system of the drive system of the work machine, the battery system generates a second energy supply, the motor generator unit being driven by the battery system;
• and
• controlling, by a controller of the work machine, the drive system to direct, towards one or more traction motors of the work machine, a portion of at least one of the first energy supply via the generator and the second energy supply via the motor generator unit and the generator.