Electrical energy storage module, associated system and method

An electrical energy storage module comprising:

• a reversible electrical energy conversion device configured to be coupled to a source of electrical energy;
• and
• an electrical energy storage device comprising:
• a first branch comprising two filter capacitors in series;
• and
• a second branch comprising two identical electrical energy storage means, wherein a first node common to and between the two capacitors and a second node common to and between the two energy storage means are connected together by an impedance to stabilize current during switching phases of the reversible electrical energy conversion device, and
• wherein a first end of the first and second branches are connected to one terminal of the reversible electrical energy conversion device, and a second end of the first and second branches are connected to another terminal of the reversible electrical energy conversion device;
• wherein the storage device further comprises:
• a disconnection switch connected between the second end of said branches and an output terminal;
• a shunt switch connected on the one hand between the disconnection switch and the output terminal, and on the other hand to the first end of said branches in such a way as to shunt the electrical energy storage means;
• and
• a grounding switch connected between the node common to the two storage means and ground.