Abstract: A power generation system has an engine disposed to drive a generator assembly having a plurality of electric generators supported on a gearbox housing. The gearbox housing encloses a gear assembly with an input driveshaft extending along a primary gear assembly axis. A drive gearset mounted on the input driveshaft is coupled to a plurality of output gearsets, each of which mounted on a separate gear assembly output driveshaft. Each gear assembly output driveshaft is parallel with but spaced radially outward from the primary gear assembly axis. At least one electric generator is mechanically coupled to each of the gear assembly output driveshafts.

Abstract: A hydraulic fracturing system includes a hybrid electric transmission assembly to transfer power from an internal combustion engine to a hydraulic fracturing pump. The transmission assembly includes a first driveshaft coupled to the engine and a second driveshaft coupled to the pump with a primary drivetrain gear assembly coupling the first driveshaft to the second driveshaft. An electric drive gearset is disposed between the primary drivetrain gear assembly and the pump. An electric motor is couplable to the electric drive gearset, thereby allowing power to be passed from the electric motor to drive the pump and bypass the primary drivetrain gear assembly during the gear change. The system may include a plurality of electric motors each having an electric motor axis and an output gearset coupled to the electric drive gearset, where each of the electric motor axii are spaced radially outward from the first and second driveshafts.

Abstract: An industrial power system includes a hybrid electric transmission assembly to transfer power from an internal combustion engine to an industrial load. The transmission assembly includes a first driveshaft coupled to the engine and a second driveshaft coupled to the load with a primary drivetrain gear assembly coupling the first driveshaft to the second driveshaft. An electric drive gearset is disposed between the primary drivetrain gear assembly and the load. An electric motor is couplable to the electric drive gearset, thereby allowing power to be passed from the electric motor to drive the load and bypass the primary drivetrain gear assembly during the gear change. The system may include a plurality of electric motors each having an electric motor axis and an output gearset coupled to the electric drive gearset, where each of the electric motor axii are spaced radially outward from the first and second driveshafts.