Active flywheel control based on the method of moment restrictions

The paper considers the use of reversible alternator for reducing the engine speed oscillation. The reversible alternator is supposed to replace the flywheel that is normally used for this purpose and we refer to this new device as an active flywheel. The key element of the active flywheel project is the design of alternator controller for speed oscillation damping. The source of the speed oscillation of the engine crankshaft is the periodical combustion process which produces the oscillating torque. We propose the method of moment restriction for the controller synthesis. This robust control method makes it possible to utilize more complete available information on the disturbance spectrum. The numerical realization of the moment restriction method is developed, which is focused on the implementation in the problem considered. The simulation of the active flywheel shows that the moment regulator constructed can reduce the oscillation significantly better than the standard flywheel.