Method for reducing the common mode current (i) circulating between the internal ground of an electric circuit and the earth, when electrical energy is exchanged between an electrical energy storage unit of the electric circuit and an electrical energy source external to said circuit, method in which an electrical magnitude (Vs, Is) is applied to an injection point using an electronic component connected through at least one impedance to an electrical line of said circuit through which said electrical energy is exchanged, said applied electrical magnitude (Vs, Is) being usable to reduce the common mode current (i) at the frequency of the electrical network, this common mode current (i) circulating between the internal ground of the circuit and the earth, characterised in that said electrical magnitude (Vs, Is) is applied by the electronic component as a function of: - a signal representative of the common mode current (i) measured on the electrical line between the electrical energy source of the network and the impedance(s) connecting the electrical line to said injection point, and - a signal representative of the current (Is) circulating between said injection point and the earth, or as a function of: - a signal representative of the common mode current (i) measured on the electrical line between the electrical energy source of the network and the impedance(s) connecting the electrical line to said injection point, - a signal representative of the current (Is) circulating between said injection point and the earth, and - a signal representative of the common mode current (i) measured on the electrical line between said injection point and the electrical energy storage unit, or as a function of: - a signal representative of the common mode current (i) measured on the electrical line between the electrical energy source of the network and the impedance(s) connecting the electrical line to said injection point, - a signal representative of the current (Is) circulating between said injection point and the earth, and - a signal representative of the current circulating in a capacitor of an electromagnetic interference filter, said electromagnetic interference filter being positioned between the impedance(s) and the electrical energy storage unit. - a signal representative of the common mode current (i) measured on the electrical line between the electrical energy source of the network and the impedance(s) connecting the electrical line to said injection point, and - a signal representative of the current (Is) circulating between said injection point and the earth, - a signal representative of the common mode current (i) measured on the electrical line between the electrical energy source of the network and the impedance(s) connecting the electrical line to said injection point, - a signal representative of the current (Is) circulating between said injection point and the earth, and - a signal representative of the common mode current (i) measured on the electrical line between said injection point and the electrical energy storage unit, - a signal representative of the common mode current (i) measured on the electrical line between the electrical energy source of the network and the impedance(s) connecting the electrical line to said injection point, - a signal representative of the current (Is) circulating between said injection point and the earth, and - a signal representative of the current circulating in a capacitor of an electromagnetic interference filter, said electromagnetic interference filter being positioned between the impedance(s) and the electrical energy storage unit.