Patent ID: 11946955
Assignee: NL CONSEIL
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A sensor configured to sense a rate of change of a current to protect bridge arms in a power module (PM) with power layers (PL) and measurement layers (ML), comprising at least three conductors (C1, C2, Cp) and coils, wherein:
one end of each of said conductors is connected to a common node (N),
and the other end of each of said conductors is used respectively each as an electrical terminal (T1, T2, Tp),
said at least three conductors are contained in a same plane, called the primary plane (P),
each conductor (C1, C2, Cp) has a plane of symmetry (P1, P2, Pp) perpendicular to the primary plane (P), each plane of symmetry passing through the common node (N) and the corresponding terminal (T1, T2, Tp),
a first conductor (C1) and a second conductor (C2) are identical and positioned symmetrically with respect to a third conductor (Cp), and
at least one pair of coils (10, 11 and/or 20, 21 and/or, 30, 31) are positioned symmetrically with respect to a plane of symmetry (P1, P2, Pp).