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 which is formed as a generator controller, is for closed-loop control of the power assembly, and is configured for:
• detecting a generator frequency (fG) of the generator (9) 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 torque (Msoll) 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 torque (Msoll);
• and
• adapting the control rule—which is used to determine the target torque (Msoll)—as a function of at least one adaptation variable, the at least one adaptation variable being selected from a group consisting of the generator frequency (fG) which is detected, a target torque variable, and a generator power;
• and
• an open-loop control device operatively connected to the closed-loop control device for directly controlling the internal combustion engine, the closed-loop control device being configured for transferring the target torque (Msoll) generated as the manipulated variable 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 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 torque (Msoll) 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 torque (Msoll);
• and
• adapting the control rule—which is used to determine the target torque (Msoll)—as a function of at least one adaptation variable, the at least one adaptation variable being selected from a group consisting of the generator frequency (fG) which is detected, a target torque variable, and a generator power,
• wherein the closed-loop control device is further configured for an open-loop control device to be operatively connected to the closed-loop control device for directly controlling the internal combustion engine, the closed-loop control device being configured for transferring the target torque (Msoll) generated as the manipulated variable 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 which is formed as a generator controller, is for closed-loop control of the power assembly, and is configured 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 torque (Msoll) 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 torque (Msoll);
• and
• adapting the control rule—which is used to determine the target torque (Msoll)—as a function of at least one adaptation variable, the at least one adaptation variable being selected from a group consisting of the generator frequency (fG) which is detected, a target torque variable, and a generator power;
• and
• an open-loop control device operatively connected to the closed-loop control device for directly controlling the internal combustion engine, the closed-loop control device being configured for transferring the target torque (Msoll) generated as the manipulated variable 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:

• detecting, by way of a closed-loop control device, a generator frequency (fG) of the generator as a controlled variable;
• determining, by way of the closed-loop control device, a control deviation (ef) as a difference between the generator frequency (fG) which is detected and a target generator frequency (fsoll);
• determining, by way of the closed-loop control device, a target torque (Msoll) as a manipulated variable for controlling the internal combustion engine as a function of the control deviation (ef);
• using, by way of the closed-loop control device, a control rule to determine the target torque (Msoll);
• and
• adapting, by way of the closed-loop control device, the control rule—which is used to determine the target torque (Msoll)—as a function of at least one adaptation variable, the at least one adaptation variable being selected from a group consisting of the generator frequency (fG) which is detected, a target torque variable, and a generator power;
• operatively connecting an open-loop control device to the closed-loop control device for directly controlling the internal combustion engine;
• transferring, by way of the closed-loop control device, the target torque (Msoll) generated as the manipulated variable to the open-loop control device.