FIELD: transportation.
SUBSTANCE: invention relates to hybrid drives. Hybrid drive system for a combine includes an engine with a control unit; battery pack; electric motor / generator, operating in two modes alternately; a motor / generator control unit and a hybrid system control unit. Hybrid system control unit receives the battery status signal of the battery pack and the current load signal of the engine and engine speed. Depending on these signals, said unit sends a torque command to the motor / generator control unit to provide the required combined speed / torque curve from the engine and the motor / generator. Engine control unit controls the engine speed at a given isochronous frequency.
EFFECT: improved performance of the combine.
21 cl, 9 dwg
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