Power distribution transformer for non-linear loads

Details Power distribution transformer for non-linear loads Power distribution transformer for non-linear loads

1991-04-25

1995-05-16

Picard, Leo P.

Inductor devices

Polyphase

Interconnected windings

H01F 3300

Patent

active

054164583

ABSTRACT:
An electrical power distribution transformer of the delta/wye configuration wherein the wye secondary windings are connected in a zigzag configuration and distributed among the legs of a multi-legged transformer core to achieve substantial attenuation of flux produced by undesired triplen harmonic (third and its multiples) currents arising from non-linear loads. The transformer also achieves a substantial reduction in capacitive coupling between the primary and secondary winding by means of an electrostatic shield positioned between the primary and secondary windings and by means of a metallic ground plane positioned as a barrier between the primary and secondary terminals.

REFERENCES:
patent: 3585484 (1971-06-01), Dortort
patent: 3839667 (1974-10-01), King
patent: 4386394 (1983-05-01), Kocher et al.
patent: 4723104 (1988-02-01), Rohatyn

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