Closed-loop control device for closed-loop control of a power assembly including an internal combustion engine and a generator having an operative drive connection to the internal combustion engine, closed-loop control arrangement having such a closed-loop control device, power assembly and method for closed-loop control of a power assembly

A closed-loop control arrangement for closed-loop control of a power assembly including an internal combustion engine and a generator having an operative drive connection to the internal combustion engine, the closed-loop control arrangement comprising:

• a closed-loop control device for closed-loop control of a power assembly, the closed-loop control device being configured, in a first functional state, for:
• detecting a generator frequency (fG) of the generator as a controlled variable;
• determining a control deviation (ef) as a difference between the generator frequency (fG) which is detected and a target generator frequency (fsoll);
• determining a target speed (nsoll) as a manipulated variable for controlling the internal combustion engine as a function of the control deviation (ef);
• using a control rule for determining the target speed (nsoll);
• and
• being operatively connected to an open-loop control device of the internal combustion engine in such a way that the target speed (nsoll) can be transmitted by the closed-loop control device to the open-loop control device;
• and
• the open-loop control device which is operatively connected to the closed-loop control device for direct control of the internal combustion engine, the closed-loop control device being configured for transmitting the target speed (nsoll) to the open-loop control device.

A power assembly, comprising:

• an internal combustion engine;
• a generator including an operative drive connection to the internal combustion engine;
• and
• one of:
• (a) a closed-loop control device for closed-loop control of the power assembly, the closed-loop control device being configured, in a first functional state, for:
• detecting a generator frequency (fG) of the generator as a controlled variable;
• determining a control deviation (ef) as a difference between the generator frequency (fG) which is detected and a target generator frequency (fsoll);
• determining a target speed (nsoll) as a manipulated variable for controlling the internal combustion engine as a function of the control deviation (ef);
• using a control rule for determining the target speed (nsoll);
• and
• being operatively connected to an open-loop control device of the internal combustion engine in such a way that the target speed (nsoll) can be transmitted by the closed-loop control device to the open-loop control device;
• and
• (b) a closed-loop control arrangement for closed-loop control of the power assembly, the closed-loop control arrangement including:
• a closed-loop control device for closed-loop control of the power assembly, the closed-loop control device being configured, in a first functional state, for:
• detecting a generator frequency (fG) of the generator as a controlled variable;
• determining a control deviation (ef) as a difference between the generator frequency (fG) which is detected and a target generator frequency (fsoll);
• determining a target speed (nsoll) as a manipulated variable for controlling the internal combustion engine as a function of the control deviation (ef);
• using a control rule for determining the target speed (nsoll);
• and
• being operatively connected to an open-loop control device of the internal combustion engine;
• and
• the open-loop control device which is operatively connected to the closed-loop control device for direct control of the internal combustion engine, the closed-loop control device being configured for transmitting the target speed (nsoll) to the open-loop control device;
• wherein the closed-loop control device or the closed-loop control arrangement is operatively connected to the internal combustion engine and the generator of the power assembly.

A method for closed-loop control of a power assembly including an internal combustion engine and a generator having an operative drive connection to the internal combustion engine, the method comprising the steps of:

• in a first operating mode,
• detecting a generator frequency (fG) of the generator as a controlled variable;
• determining a control deviation (ef) as a difference between the generator frequency (fG) which is detected and a target generator frequency (fsoll);
• determining a target speed (nsoll) as a manipulated variable for controlling the internal combustion engine as a function of the control deviation (ef);
• and
• determining the target speed (nsoll) based on a control rule.