公开(公告)号：US20230370003A1

公开(公告)日：2023-11-16

申请号：US18356372

申请日：2023-07-21

Applicant: ABB Schweiz AG

Inventor： Deyan Zhelev ,  Matthias Baechle ,  Georg Meier

IPC: H02P9/12 ,  H02P9/08

CPC classification number: H02P9/123 ,  H02P9/08

Abstract: A de-exciting system for dissipating energy from an inductive circuit that comprises at least one coil adapted to be attached to said inductive circuit and comprising a series connection of a discharge resistor and a unidirectional discharge switching element; a unidirectional bypass switching element that is connected in parallel to the discharge resistor such that, when the de-exciting system is attached to the inductive circuit and both the discharge switching element and the bypass switching element are in a conducting state, a closed conducting path comprising the coil, the discharge switching element, and the bypass switching element is formed; and a control device configured to, in a first de-excitation phase, switch both the discharge switching element and the bypass switching element into a conducting state, and in a second de-excitation phase, switch the bypass switching element into a non-conducting state, while keeping the discharge switching element in the conducting state.