Earth fault protection of a frequency converter

Details Earth fault protection of a frequency converter Earth fault protection of a frequency converter

2007-12-13

2010-02-16

Jackson, Stephen W (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

Reexamination Certificate

active

07663850

ABSTRACT:
A method in connection with a frequency converter, which frequency converter comprises output phases and switches of the output phases, the output phases being switched to feed a load, and the main circuit of the frequency converter being provided with common-mode inductance. The method comprises a step where, in case of earth fault, switches of the output phase having an earth fault are modulated in such a way that the average potential of this phase corresponds to the ground potential.

REFERENCES:
patent: 5444333 (1995-08-01), Lau
patent: 5877926 (1999-03-01), Moisin
patent: 5901057 (1999-05-01), Brand et al.
patent: 6381110 (2002-04-01), Nagashima et al.
patent: 7233465 (2007-06-01), Lee
patent: 2005/0099743 (2005-05-01), Lee
patent: 2008/0278108 (2008-11-01), Choi et al.
patent: 5-126870 (1993-05-01), None
patent: 2000-116144 (2000-04-01), None
patent: WO 2006/069568 (2006-07-01), None
Finnish Application Official Action, Apr. 19, 2008.

Affiliated with

Also associated with

Rating

Earth fault protection of a frequency converter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Earth fault protection of a frequency converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Earth fault protection of a frequency converter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4230510