Adjustment of parameter values of a control rule of a generator

A virtual generator comprising an inverter and an electrical energy source, the virtual generator being configured to deliver output electrical values to an electrical distribution grid, the virtual generator being controlled according to a control law, the control law comprising a set of values of parameters for modelling functioning of the virtual generator, the set of values of parameters being predetermined before operation of the virtual generator, the control law being applied to one or several values, so that the control law is configured to determine at least one target output value that must be delivered by the virtual generator to the electrical distribution grid, the virtual generator comprising a processor configured:

• (i) to determine at least one target output value according to the control law, the parameters of the control law being chosen from a stator resistance of the stator, a transient inductance of the stator, a permanent inductance of the stator and a transient open-loop time of the virtual generator;
• (ii) to compare the target output value with at least one allowable maximum value of the virtual generator;
• and
• (iii) if the target output value is higher than the allowable maximum value, to determine a modified value of at least one parameter from the parameters of the control law, wherein the virtual generator emulates a synchronous virtual generator that delivers an electric current a frequency of which is determined by a speed of rotation of a rotor with respect to a stator,
• wherein the control law is a dynamic control law, and
• wherein the operations of (i), (ii) and (iii) are repeatedly implemented periodically, the control law for a following implementation of the operations of (i), (ii) and (iii) having the value of the at least one parameter determined during a previous implementation of the operations of (i), (ii) and (iii).

A method for controlling a virtual generator comprising an inverter and an electrical energy source, the virtual generator being configured to deliver output electrical values to an electrical distribution grid, the virtual generator being controlled according to a control law, the control law comprising a set of values of parameters for modelling functioning of the virtual generator, the set of values of parameters being predetermined before operation of the virtual generator, the control law being applied to one or several values, so that the control law is configured to determine at least one target output value that must be delivered by the virtual generator to the electrical distribution grid, the method comprising:

• (i) determining at least one target output value according to the control law, the parameters of the control law being chosen from a stator resistance of the stator, a transient inductance of the stator, a permanent inductance of the stator and a transient open-loop time of the virtual generator;
• (ii) comparing the target output value with at least one allowable maximum value of the virtual generator;
• and
• (iii) if the target output value is higher than the allowable maximum value, determining a modified value of at least one parameter from the parameters of the control law, wherein the virtual generator emulates a virtual generator that delivers an electric current a frequency of which is determined by a speed of rotation of a rotor with respect to a stator,
• wherein the control law is a dynamic control law, and
• wherein the steps of the method are repeated, the value of the modified parameter is determined so as to minimise a difference between the modified values of the parameter obtained during two successive iterations of the steps of the method.