Patent
Three-phase tap-changing transformer system
TLDR
In this article, the number of gate-constrained, gate-consistent, and gate-controlled, switchboard-switching devices in a three-phase TAP-CHANGING TRANSFORMER system is minimized by simultaneously USing the same STATIC SEMICONDUCTOR SWitching DeVICES in COMBINATION with APPROPRIATE SWITCHING DEVICES HAVING RELATIVELY MOVable CONTACTS.Abstract:
THE NUMBER OF GATE-CONTROLLED SEMICONDUCTOR A-C SWITCHING DEVICES (INVERSE PARALLEL CONNECTED THRYSTORS OR TRIACS) IN A THREE-PHASE TAP-CHANGING TRANSFORMER SYSTEM IS MINIMIZED BY SEQUENTIALLY USING THE SAME STATIC SEMICONDUCTOR SWITCHING DEVICES IN COMBINATION WITH APPROPRIATE SWITCHING DEVICES HAVING RELATIVELY MOVABLE CONTACTS FOR SEQUENTIALLY EFFECTING TAP-CHANGING OPERATIONS IN ALL THREE PHASES OF A Y-CONNECTED TRANSFORMER WHOSE WINDINGS ARE TAPPED.read more
Citations
More filters
Patent
Useful improvements in the art of 3-phase electronic tap changer commutation device
TL;DR: In this paper, a 3-phase electronic tap changer commutation device was proposed to improve performance and reduce cost compared to conventional methods, and a specific transformer winding topology and commutation technique that improves performance and reduces cost.
Patent
3-phase electronic tap changer commutation and device
TL;DR: In this paper, the authors proposed a 3-phase electronic tap changer commutation and related device, which includes firing a commutation silicon controlled rectifier (SCR), removing a gating signal from a first SCR connected to a first of the plurality of taps, and firing a second SCR connecting to a second of a plurality of switches.
Patent
Tap-changer switching system and method of operating same
TL;DR: In this article, the authors proposed a switching arrangement for a tap-changing transformer with an on-load tap changer, wherein the switching arrangement comprises - a main winding with a first main connection terminal, - a coarse winding with two coarse connection terminals, and a second coarse connection terminal.