Power system for a machine

A work machine, comprising:

• an engine;
• a high-speed flywheel configured to recover or store at least a portion of energy generated during a braking operation of the engine,
• wherein the high-speed flywheel requires at least 20,000 revolutions per minute (RPM);
• a battery;
• a motor-generator unit (MGU) connected to the engine and the battery;
• a flywheel MGU;
• and
• a turbocharger connected to the engine,
• wherein one or more of the high-speed flywheel, the battery and the MGU, or the turbocharger is configured to provide:
• supplemental power to power provided by the engine to operate the work machine, or
• replacement power when no power is provided by the engine to operate the work machine.

A method, comprising:

• receiving, by a controller of a power system, a request to provide power to operate a machine,
• wherein the power system comprises a high-speed flywheel, a battery, a flywheel motor-generator unit (MGU), and a turbocharger, and
• wherein a first rotational speed range of the flywheel MGU is less than a second rotational speed range of the high-speed flywheel;
• determining, by the controller and based on the request, that one or more of the high-speed flywheel, the battery and the flywheel MGU, or the turbocharger are to provide the power;
• and
• causing, by the controller, the one or more of the high-speed flywheel, the battery and the flywheel MGU, or the turbocharger to provide the power as:
• supplemental power to power provided by an engine of the machine to operate the machine, or
• replacement power when no power is provided by the engine to operate the machine.