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Heavy Current Inductive Devices Made From Plate-Form Conductors in Thermal Contact With Heat Sink

IP.com Disclosure Number: IPCOM000060776D
Original Publication Date: 1986-May-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 2 page(s) / 70K

Publishing Venue

IBM

Related People

Meyer, HP: AUTHOR

Abstract

This article describes an inductor and a transformer, each made from plate-like elements coupled to form high current windings in each case forming a compact structure having a flat surface for thermal contact to a heat sink. Fig. 1 shows an inductor made from a series of copper plate elements 10a-10h and end L-shaped copper plate elements 12 and 14, interspaced by electrical insulating sheet elements 16a-16i and conductive washer-like elements 18a-18i. Fig. 2 shows an exploded view of an series of these elements to illustrate their mode of connection to form, in effect, an electrically conductive helix. The arrows 20 indicate direction of electric current in the plate elements, and the arrows 22 indicate the electric current through the bridging washer-like elements between them.

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Heavy Current Inductive Devices Made From Plate-Form Conductors in Thermal Contact With Heat Sink

This article describes an inductor and a transformer, each made from plate-like elements coupled to form high current windings in each case forming a compact structure having a flat surface for thermal contact to a heat sink. Fig. 1 shows an inductor made from a series of copper plate elements 10a-10h and end L-shaped copper plate elements 12 and 14, interspaced by electrical insulating sheet elements 16a-16i and conductive washer-like elements 18a-18i. Fig. 2 shows an exploded view of an series of these elements to illustrate their mode of connection to form, in effect, an electrically conductive helix. The arrows 20 indicate direction of electric current in the plate elements, and the arrows 22 indicate the electric current through the bridging washer-like elements between them. After the inductor is assembled, it is mounted on a heat sink plate 24. Plate 24 has liquid coolant pipes 26, 28 connected to interior channels (not shown) within plate 24. Interposed between the inductor assembly and heat sink 24 is asheet of thermally conductive but electrically insulating material 29. Usually, though not necessarily, the inductor has a ferromagnetic core (not shown) passing through the window 30 and over the top of the structure shown in Fig. 1. For simplicity of illustration, mechanical connecting bolts passing through the holes shown in the illustrated elements, and electrical connections to the end members 12, 14, have been omitted. Figs. 3 and 4 show a configuration of plate- form elements arranged to constitute the high current secondary of a...