Output controller for an engine controller, engine controller, and engine system

A power controller (1) for an engine controller (2) for an engine system (3) having an internal combustion engine (M) and an electric generator (G) coupled to the internal combustion engine (M), the power controller (1) comprising:

• a computing device (RE) configured to receive a desired power (P_des) for the engine system (3) and a maximum permissible speed (n_max) for the internal combustion engine (M) and to calculate a desired speed (n_des) for the electric generator (G) and an output torque (tq_prectl) of the internal combustion engine (M) on the basis of the desired power (P_des) and the maximum permissible speed (n_max);
• an inertia compensator (TK) configured to calculate a torque (tq_J) transmitted to a shaft of the generator (G) by a total mass moment of inertia (j_Rex) of the internal combustion engine (M) and of the generator (G) on the basis of a change in the desired speed (n_des) for the electric generator (G) and to calculate a desired torque (tq_ICE) for the internal combustion engine (M) on the basis of the transmitted torque (tq_J) and the calculated output torque (tq_prectl) of the internal combustion engine (M);
• and
• an efficiency calculator (EB) configured to calculate an efficiency (eff) of the engine system on the basis of the desired speed (n_des) for the electric generator (G) and the calculated output torque (tq_prectl) of the internal combustion engine (M) and a battery voltage (u_bat) and a generator current (i_act) of a battery of the engine system (3) and the calculated desired torque (tq_ICE) for the internal combustion engine (M) and to adapt the value for the desired power (P_des), which is supplied to the first computing device (RE), on the basis of the calculated efficiency (eff) and to output it as the desired mechanical power (P_des_mech).