Mobile waste comminuting device comprising a series-connected hybrid drive system

A mobile waste comminuting device, comprising:

• at least one comminuting shaft;
• an internal combustion engine;
• at least one generator that is coupled to the internal combustion engine to convert mechanical energy of the internal combustion engine into electric energy;
• at least one electric motor powered with the electric energy for driving and changing the direction of rotation of the at least one comminuting shaft;
• and
• an energy store for storing energy, wherein the energy store at least partly powers the at least one electric motor with electric energy, stores energy during periods of low power demand, and supplies energy during periods of high power demand relative to the nominal power of the at least one generator.

A method of operating a mobile waste comminuting device comprising the steps of:

• providing a mobile waste comminuting device comprises at least one comminuting shaft, an internal combustion engine, at least one generator that is coupled to the internal combustion engine, at least one electric motor and one energy store;
• operating the internal combustion engine;
• generating electric energy with the at least one generator;
• driving the at least one comminuting shaft with the at least one electric motor;
• storing energy in the energy store during periods of low power demand relative to a nominal power of the at least one generator;
• and
• at least partly powering the at least one electric motor with electric energy from the energy store, wherein the powering step comprises powering the at least one electric motor with electric energy from the energy store for covering a portion of periods of high power demand going beyond the nominal power of the at least one generator.