PERMANENT MAGNET DRIVE ON-LOAD TAP-CHANGING SWITCH

Title:

PERMANENT MAGNET DRIVE ON-LOAD TAP-CHANGING SWITCH

Document Type and Number:

WIPO Patent Application WO/2016/106917

Kind Code:

A1

Abstract:

A permanent magnet drive on-load tap-changing switch comprising a changing switch circuit and a high-speed mechanism. The changing switch circuit comprises an odd-numbered tap-changing switch circuit and an even-numbered tap-changing switch circuit that are structurally identical. The high-speed mechanism comprises a traveling mechanism (2) used for bearing a moving contactor (7), a moving magnet group connected with the traveling mechanism (2), and a fixed magnet group producing an attracting force/repelling force with respect to the moving magnet group. The moving magnet group comprises a first permanent magnet (1) and a second permanent magnet (3) connected together at homonymic magnetic poles. An exposed homonymic magnetic pole of the first permanent magnet (1) and that of the second permanent magnet (3) face directly the fixed magnet group. The fixed magnet group comprises a rotating permanent magnet (5) that rotates to change a force applied to the moving magnet group and thereby allowing the moving contactors (7) to either come into contact with or be separated from working contactors (K1 and K2) and dual-contact synchronous transition contactors (k1, k1', k2, and k2'). The on-load tap-changing switch is structurally simple and highly reliable, utilizes, on the basis that like poles attract each other whereas unlike poles repel each other, the permanent magnets as the high-speed mechanism to drive the moving contactors to complete changing with the working contactors and transition contactors thereof, extends the service life of the on-load tap-changing switch, and has value for widespread use.

Inventors:

DIAO JUNQI (CN)

Application Number:

PCT/CN2015/071679

Publication Date:

July 07, 2016

Filing Date:

January 28, 2015

Export Citation:

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Assignee:

DIAO JUNQI (CN)

International Classes:

H01H3/28

Foreign References:

CN104517753A	2015-04-15
CN203119860U	2013-08-07
CN203150352U	2013-08-21
CN2862287Y	2007-01-24
CN201359913Y	2009-12-09
US4496805A	1985-01-29

Other References: