A method for balancing at least one component of the power supplied by a first and a second electrical energy converters, notably two inverters , connected in parallel in a power grid of a vehicle , in particular a railway vehicle, the power grid being configured to operate at a fundamental frequency, the method including: - a step of commanding a change of the fundamental frequency of the power grid , - a step of varying a frequency setpoint of a second converter as a function of the change of the fundamental frequency; - a step of measuring the variation of a component of a current supplied by a first converter , in order to obtain a measured variation, and - a step of modifying a command setpoint of the first converter as a function of the measured variation, the power grid comprising a controller and: - during the step of commanding the change of the fundamental frequency, the controller receives a command of change of the fundamental frequency and notably the fundamental frequency at a specified value, - during the step of varying a frequency setpoint of a second converter , the controller has the command in frequency of the second inverter evolving linearly from the current value to the specified value, - during the step of measuring, the variation of the frequency at the output of the first converter is measured and the measuring of the current is carried out at the moment at which the change of the fundamental frequency is launched, and - during the step of modifying the command setpoint, the controller commands the current setpoint of the first inverter a function of the measured variation of the frequency at the output of the first inverter and of the measured current at the moment at which the change of the fundamental frequency is launched. - a step of commanding a change of the fundamental frequency of the power grid , - a step of varying a frequency setpoint of a second converter as a function of the change of the fundamental frequency; - a step of measuring the variation of a component of a current supplied by a first converter , in order to obtain a measured variation, and - a step of modifying a command setpoint of the first converter as a function of the measured variation, - during the step of commanding the change of the fundamental frequency, the controller receives a command of change of the fundamental frequency and notably the fundamental frequency at a specified value, - during the step of varying a frequency setpoint of a second converter , the controller has the command in frequency of the second inverter evolving linearly from the current value to the specified value, - during the step of measuring, the variation of the frequency at the output of the first converter is measured and the measuring of the current is carried out at the moment at which the change of the fundamental frequency is launched, and - during the step of modifying the command setpoint, the controller commands the current setpoint of the first inverter a function of the measured variation of the frequency at the output of the first inverter and of the measured current at the moment at which the change of the fundamental frequency is launched. <EOS>