HIGH-SPEED CIRCUIT BREAKER FOR A HIGH-PERFORMANCE BATTERY IN AN ISOLATED DIRECT CURRENT NETWORK

摘要

The invention relates to a high-speed circuit breaker (1) for a high-performance battery (2) in an isolated direct current network (3), in particular a submarine direct current network. The high-performance battery (2) comprises several battery modules (4) connected in parallel, each having one branch (5) or several (5) branches of high-performance battery cells (6), said branch or each of said branches (5) having the network voltage of the isolated direct current network (2). The circuit breaker has a respective switching unit (12) for each of the battery modules (4), said unit having a parallel circuit (8) consisting of a biased diode (9) that allows the passage of the charging current (4) of the battery modules and of a biased power semiconductor switch (10) that allows the passage of the discharging current. The parallel circuit (8) is located in a connecting conductor (4) for the isolated direct current network (3) and the switched state of the power semiconductor switch (10) can be controlled by a monitoring and control unit (11), said unit (11) being designed in such a way that in order to disconnect a discharging current in the connecting conductor (7) it interrupts the charging current flowing in the connecting conductor (7) by switching the power semiconductor switch to a non-conductive state (10).