公开(公告)号：US20170344039A1

公开(公告)日：2017-11-30

申请号：US15167739

申请日：2016-05-27

Applicant: COOPER TECHNOLOGIES COMPANY

Inventor： Frederick Alan Stich ,  Tiefu Zhao

IPC: G05F1/20

CPC classification number: G05F1/20

Abstract: A voltage regulator includes a tap changer coupled to a voltage source terminal and a voltage load terminal, The voltage regulator also includes a first switch and a first current transformer coupled in series between the voltage load terminal and a first movable contact of the tap changer. The voltage regulator further includes a second switch and a second transformer coupled in series between the voltage load terminal and a second movable contact of the tap changer, A first silicon controlled rectifier and a second silicon controlled rectifier are controlled by a first control circuit and a second control circuit, respectively. The first control circuit and the second control circuit each include a rectifier, a gating switch, and a positive voltage detector.