Frequency converter assembly and method of using frequency...

Details Frequency converter assembly and method of using frequency... Frequency converter assembly and method of using frequency...

2006-11-16

2008-08-05

Laxton, Gary L (Department: 2838)

Electric power conversion systems

Current conversion

Including an a.c.-d.c.-a.c. converter

C318S375000

Reexamination Certificate

active

07408791

ABSTRACT:
A frequency converter assembly comprising a direct-voltage circuit and brake chopper means, the direct-voltage circuit including a first branch (DC+) and a second branch (DC−), and the brake chopper means including a first terminal (BRK+), a second terminal (BRK−), a brake chopper switch (S1) and control means (2). The brake chopper switch (S1) is arranged in its closed position to provide a braking connection, in which the first branch (DC+) is electrically connected to the first terminal (BRK+) and the second branch (DC−) is electrically connected to the second terminal (BRK−). The assembly is provided with a first operating state where the control means (2) are arranged to control the brake chopper switch (S1) selectively to the closed position and the open position in response to the desired power supply direction of the direct-voltage circuit. The assembly is further provided with a second operating state where the control means (2) are arranged to maintain the brake chopper switch (S1) continuously in the closed position.

REFERENCES:
patent: 4434393 (1984-02-01), Kobari et al.
patent: 4879639 (1989-11-01), Tsukahara
patent: 4904918 (1990-02-01), Bailey et al.
patent: 10-248281 (1998-09-01), None
patent: 2000-188897 (2000-07-01), None
patent: 2005-224031 (2005-08-01), None
Finnish Search Report dated May 16, 2006 (with English translation of category of cited documents.
Finnish Office Action dated May 16, 2006.

Affiliated with

Also associated with

Rating

Frequency converter assembly and method of using frequency... does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4007091