Method for operating a generator set, device for operating a generator set, and generator set

A device for operating a generator set which includes an internal combustion engine and a generator, the internal combustion engine including an engine, the generator being connected to the engine and thereby being configured for torque transmission, the generator set being configured for feeding electrical power into an electrical supply grid, which is associated with a grid frequency, a grid voltage, and a grid phase, the generator set further including a rotating portion, the device comprising:

• a generator set controller configured for specifying a generator set frequency and a generator set phase of a voltage of a power generated by the generator;
• an engine control unit configured for adapting a torque-forming combustion control variable for the engine of the internal combustion engine;
• a phase regulator configured for operating the engine of the internal combustion engine in a phase controlled mode by regulating an engine phase to change a generator set phase, wherein the engine phase is in a defined geometrical relationship with the generator set phase, the engine control unit being configured for adjusting the torque-forming combustion control variable for the engine to adapt the engine phase to a target engine phase;
• and
• a target phase generator positioned upstream of the phase regulator, the target phase generator being configured for determining the target engine phase subject to a computational rotational reference system that describes a rotational motion of a fictitious inertia-increasing mass with a virtual stabilization speed such that the fictitious inertia-increasing mass rotates at the virtual stabilization speed, a mass of the fictitious inertia-increasing mass being larger than a mass of the rotating portion of the generator set.

A generator set, comprising:

• an internal combustion engine including an engine;
• a generator connected to the engine of the internal combustion engine in a torque-transmitting manner and thereby being configured for supplying energy to a supply grid, which is associated with a grid frequency, a grid voltage, and a grid phase;
• a rotating portion;
• and
• a device configured for operating the generator set, the device including:
• a generator set controller configured for specifying a generator set frequency and a generator set phase of a voltage of a power generated by the generator;
• an engine control unit configured for adapting a torque-forming combustion control variable for the engine of the internal combustion engine;
• a phase regulator configured for operating the engine of the internal combustion engine in a phase controlled mode by regulating an engine phase to change a generator set phase, wherein the engine phase is in a defined geometrical relationship with the generator set phase, the engine control unit being configured for adjusting the torque-forming combustion control variable for the engine to adapt the engine phase to a target engine phase;
• and
• a target phase generator positioned upstream of the phase regulator, the target phase generator being configured for determining the target engine phase subject to a computational rotational reference system that describes a rotational motion of a fictitious inertia-increasing mass with a virtual stabilization speed such that the fictitious inertia-increasing mass rotates at the virtual stabilization speed, a mass of the fictitious inertia-increasing mass being larger than a mass of the rotating portion of the generator set.