Manipulationssichere Leistungsschaltervorrichtung für einen Leistungswandler sowie Leistungswandler

Details

Veröffentlichungs-Nr.

EP3166216

Aktenzeichen

EP15193257

Anmeldetag

5. November 2015

Veröffentlichung

29. Juli 2020

Erteilung

29. Juli 2020

Rechtsraum

EP

IPC

H02M1/08

Abstract

A power switch apparatus (21) for a power converter (6, 7) is disclosed, which comprises a semiconductor power switch (33) and a gate drive unit (28, 29) connected to the semiconductor power switch (33) for supplying gate drive signals (Vg) to the semiconductor power switch (33) to switch it on and off to cause the power converter (6, 7) to generate an alternating current (AC) voltage (V AC ) having a nominal operational frequency (f) based on command signals (58) received from a controller (31). The gate drive unit (28, 29) is configured to receive command signals (58) based on the AC voltage (V AC ) of the nominal operational frequency (f) to be generated and to alter the switching events of the semiconductor power switch (33) by addition of a pre-defined jitter-like deviation to the gate drive signals (Vg) such as to cause the power converter (6, 7) to generate an AC voltage (V AC *) having a modified operational frequency (f*) which at least partly and temporarily deviates from the nominal operational frequency (f) by at least a pre-defined minimum percentage. This prevents the power switch apparatus (21) from being misused for military and other undesired applications which it was originally not designed for and which require high frequency generation with high accuracy. A power converter (6, 7) comprising such a power switch apparatus (21) is also disclosed.

Anmelder

Firma

GE Energy Power Conversion Technology Ltd

Land

🇬🇧 Großbritannien

Fachgebiete