System for balancing, by magnetic coupling, an association in series of elements for generating or storing electrical energy

摘要

System for balancing an association in series of elements for generating and/or storing electrical energy has full bridge inverters (OPC1, OPC2, OPCN), with two inverter arms connected in parallel between two end ports and with two switches (Th1, Tb1; Th2, Tb2) connected in series by a median point (P11, P12) of the arm; a plurality of connectors for connecting the two end ports of each full bridge inverter to a respective element (CA1, CA2, CAN, PV1, PV2, PVN) of said association in series; and a magnetic coupler (NM) formed by a magnetic core on which a plurality of windings (W1, W2, WN) is formed, each winding connected to the median points of the arms of one of said inverters. A series of elements (CA1, CA2, CAN) for electrochemical storage of electrical energy and a series of photovoltaic cells (PV1, PV2, PVN) provided with such a balancing system are also disclosed.

主权项

1. A system for balancing a series association of elements for generating and/or storing electrical energy, the system being characterized in that it comprises:
a plurality of full-bridge inverters (OPC1, OPC2, OPCN) each of which is constituted by two inverter arms connected in parallel between two end ports of the inverter, each inverter arm being constituted in turn by two switches (Th1, Tb1; Th2, Tb2) connected in series via a midpoint (P11, P12) of the arm; a plurality of connectors for connecting the two end ports of each full-bridge inverter to a respective element (CA1, CA2, CAN, PV1, PV2, PVN) of said series association; and a magnetic coupler (NM) formed by a magnetic core having a plurality of windings (W1, W2, WN) wound thereon, each of said windings being connected to the midpoints of the arms of a respective one of said inverters.