Invertor with suppression of interference currents

Details Invertor with suppression of interference currents Invertor with suppression of interference currents

1998-07-17

1999-12-07

Riley, Shawn

Electric power conversion systems

Current conversion

Having plural converters for single conversion

363 41, H02M 700

Patent

active

059994274

ABSTRACT:
An invertor (15) includes a plurality of invertor bridges (B1, . . . ,B8), which are connected in parallel and whose output voltages are summed via a transformer (19). The transformer (19) has a number of primary windings (P1, . . . ,P8) and associated secondary windings (S1, . . . ,S8) which corresponds to the number of invertor bridges (B1, . . . ,B8). Each invertor bridge (B1, . . . ,B8) is connected on the output side to one of the primary windings (P1, . . . ,P8), and the secondary windings (S1, . . . ,S8) are connected in series to sum the output voltages. The transformer (19) has a center tap (23) which is grounded via a ground connection (24). Tertiary windings (T1, . . . ,T8) are assigned to the primary windings (P1, . . . ,P8) and to the secondary windings (S1, . . . ,S8). The tertiary windings (T1, . . . ,T8) are also connected to a common-mode filter (51). The common-mode filter (51) is tuned to common mode interference voltages associated with in-phase or common-mode interference currents flowing via the ground connection (24). Thus, a circuit is formed that attenuates or suppresses the in-phase or common-mode interference currents and the associated interference voltages.

REFERENCES:
patent: 5065303 (1991-11-01), Nguyen et al.
patent: 5434771 (1995-07-01), Danby et al.
patent: 5508905 (1996-04-01), Reichard
patent: 5666278 (1997-09-01), Ng et al.
"Die Brucke zwischen den Systemen", Steinbach, Elektrische Bahnen 89, 1991, pp. 187-188.
"Bremen's 100-MW static frequency link", Boeck, et al., ABB Review, ed. Sep. 10, 1996, ABB Asea Brown Boveri Ltd. Zurich/Switzerland, published Sep. 1996, pp. 4-17.

Affiliated with

Also associated with

Rating

Invertor with suppression of interference currents does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Invertor with suppression of interference currents, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Invertor with suppression of interference currents will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-831347