H - Electricity – 01 – F
Patent
H - Electricity
01
F
336/53
H01F 27/38 (2006.01) H01F 30/12 (2006.01) H02J 3/18 (2006.01)
Patent
CA 1218714
51,191 ABSTRACT OF THE DISCLOSURE A three phase core form transformer for use in a three phase dual dynamic stabilizer system that provides reactive power compensation. The transformer has a three legged magnetic core, a plurality of primary windings corresponding to the phases, two auxiliary secondary windings per phase that are wound to provide first and second common bifilar portions, and a plurality of prin- cipal secondary windings corresponding to the number of primary windings. The first common bifilar portion, the principal secondary winding, the second common bifilar portion and the primary winding are placed coaxially and radially adjacent, in the recited order, starting from each leg of the magnetic core. The primary windings are connected in delta. The principal secondary windings and auxiliary secondary windings are connected in a forked wye wherein one auxili- ary secondary winding of each of the other two phases is electrically connected to the free end of each of the wye connected principal secondary windings. This results in all three phases being present in each combination of principal secondary windings and auxiliary secondary windings. With this arrangement of windings the leakage reactance of the principal secondary winding and the common leakage reactance of the auxiliary secondary wind- ings attached thereto for each phase are positive in value with the leakage reactance of the principal secondary winding being made to be about twice that of the common leakage reactance of the auxiliary windings. 51,191 The primary windings can be continuous wound windings with the principal secondary windings and the auxiliary secondary windings being helitran wound windings.
455576
Novak Paul G.
Specht Theodore R.
Oldham And Company
Westinghouse Electric Corporation
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