Control strategy for providing regenerative electrical power to trolley line in trolley capable mining truck

A trolley capable mining truck, comprising:

• a machine frame;
• ground engaging propulsion elements coupled with the machine frame;
• a pantograph supported on the machine frame and having an engaged configuration in which the pantograph is electrically connected with an overhead trolley line and a stowed configuration in which the pantograph is electrically disconnected from the overhead trolley line;
• and
• a power system including:
• an onboard electrical power source providing electrical power to a pair of electric drive propulsion motors along a first electrical path in a first configuration of the power system, wherein the onboard electrical power source includes an internal combustion engine coupled to an electrical power generator, wherein the electric drive propulsion motors power the ground engaging propulsion elements;
• the pantograph providing electrical power from the overhead trolley line, through a transient damping reactor supported on the machine frame, and to the pair of electric drive propulsion motors along a second electrical path in a second configuration of the power system;
• and
• a third configuration in which, during a braking mode of the trolley capable mining truck, the electric drive propulsion motors provide regenerative electrical power through a regenerative power converter including the transient damping reactor, through the pantograph, and to the overhead trolley line along a third electrical path.