Variable power take-off with electric generating capacity

A controller for a power take-off system of a vehicle having an internal combustion engine, the controller configured to:

• receive an input from a human-machine interface to select a variable speed power take-off mode of operation or an electrical power generation mode of operation for the power take-off system;
• in response to selection of the variable speed power take-off mode, operate to 1) drive an electrical generator using rotational power from the internal combustion engine to provide electrical power to a high voltage bus and 2) provide rotational power to the power take-off output shaft;
• and
• in response to selection of the electrical power generation mode, operate to 1) drive the electrical generator using rotational power from the internal combustion engine to provide electrical power to a high voltage bus, 2) drive an electrical machine using rotational power from the internal combustion engine to provide electrical power to the high voltage bus, and 3) actuate a power take-off brake to stop rotation of the power take-off output shaft.

A power take-off system for a vehicle having an internal combustion engine, the power take-off system comprising:

• a gear connected to an engine output shaft of the internal combustion engine;
• an electrical generator in communication with the engine output shaft for receiving power therefrom;
• an electrical machine in communication with the engine output shaft;
• a power take-off planetary gear train in communication with the engine output shaft;
• a power take-off output shaft in communication with the power take-off planetary gear train and configured to be driven by the engine output shaft;
• a power take-off brake in communication with the power take-off output shaft;
• and
• a power take-off control system including a controller having a processor, a memory and a human-machine interface, the controller configured to:
• receive an input from the human-machine interface to select a variable speed power take-off mode of operation or an electrical power generation mode of operation for the power take-off system,
• in response to selection of the variable speed power take-off mode, operate to 1) drive the electrical generator using rotational power from the internal combustion engine to provide electrical power to a high voltage bus and 2) provide rotational power via the power take-off planetary gear train to the power take-off output shaft, and
• in response to selection of the electrical power generation mode, operate to 1) drive the electrical generator using rotational power from the internal combustion engine to provide electrical power to a high voltage bus, 2) drive the electrical machine using rotational power from the internal combustion engine to provide electrical power to the high voltage bus, and 3) actuate a power take-off brake to stop rotation of the power take-off output shaft.