Überspannungsvorbeugungsvorrichtung und Stromgleichrichtschaltung

Details

Veröffentlichungs-Nr.

EP2899824

Aktenzeichen

EP15152466

Anmeldetag

26. Januar 2015

Veröffentlichung

18. August 2021

Erteilung

18. August 2021

Rechtsraum

EP

IPC

H02H7/06F03D9/00H02J3/38H02P9/00H02P29/024// H02H7/12H02H9/00

Abstract

According to one embodiment, an over-voltage prevention device includes a first short-circuit device (12) provided between a secondary side of a wound-rotor induction machine (1) and a frequency converter (7) configured to excite the secondary side by a three-phase AC current and having a function of shortcircuiting between phases of the three-phase AC current, resistors (13) each connected between the first short-circuit device (12) and the frequency converter (7) for each phase, and second short-circuit devices (14) connected respectively to the resistors (13) in parallel and having a function of shortcircuiting between the frequency converter (7) and the secondary side of the wound-rotor induction machine (1).

Anmelder

Firma

Kabushiki Kaisha Toshiba

Land

🇯🇵 Japan

Fachgebiete