US3906336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor valve assembly and bus arrangement for high current low voltage electric power converter
Assignee: General Electric Co
•
Filing: 1974-07-22
•
Granted: 1975-09-16
•
Expires: 1994-07-22
Abstract
Abstract A triple diametric high power rectifier having relatively low unidirectional output voltage comprises power transformer apparatus having three biphase secondary windings, each in a separate enclosure with one primary phase winding and each associated with an adjacent compact assembly of two semiconductor valves and intermediate AC and DC bus structure. For each biphase transformer section a coaxial tubular bus assembly extends between secondary winding terminals on the transformer housing and two concentric circumferential arrays of semiconductor diodes each constituting one phase valve. The biphase winding terminals are connected to the valves through two tubular conductors and a third reentrant tubular conductor connects the common valve terminals to a DC terminal adjacent the transformer housing. From the DC terminal and a biphase winding neutral terminal two DC bus conductors extend in parallel spaced apart relation parallel to and on opposite sides of the coaxial conductor assembly.
Inventors
- 👤 Puy Robert P De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:53
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/06; H02M7/08
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
229 words
In electric current converter apparatus, a power transformer including an enclosure and having a pair of alternating current phase winding terminals and an intermediate neutral terminal mounted upon said enclosure, a coaxial assembly of at least three tubular electrical conductors having one axial end adjacent said transformer terminals and the other end remote, means electrically connecting said phase winding terminals to a first and a second of said tubular conductors, respectively, at the transformer end of said coaxial assembly, a direct current terminal connected to a third said tubular conductor at said transformer end of said coaxial assembly, a plurality of semiconductor devices each having anode and cathode electrodes, means mounting said semiconductor devices in two angularly balanced valve arrays circumferentially about the axis of said coaxial assembly at the remote end thereof, common valve terminal means connecting like electrodes of all said semiconductor devices directly to said third tubular conductor at its remote end, and means connecting the other electrodes of each said valve array, respectively, directly to the remote ends of said first and second tubular conductors, whereby phase winding currents through said coaxial assembly are divided substantially equally among the semiconductor devices of each said valve array and unidirectional current from said valves traverses said assembly in directly reentrant relation, both said direct current and neutral terminals being adjacent the transformer end of said coaxial assembly.
Claim 2
Dependent Claim
229 words
In electric current converter apparatus, a power transformer including an enclosure and having a pair of alternating current phase winding terminals and an intermediate neutral terminal mounted upon said enclosure, a coaxial assembly of at least three tubular electrical conductors having one axial end adjacent said transformer terminals and the other end remote, means electrically connecting said phase winding terminals to a first and a second of said tubular conductors, respectively, at the transformer end of said coaxial assembly, a direct current terminal connected to a third said tubular conductor at said transformer end of said coaxial assembly, a plurality of semiconductor devices each having anode and cathode electrodes, means mounting said semiconductor devices in two angularly balanced valve arrays circumferentially about the axis of said coaxial assembly at the remote end thereof, common valve terminal means connecting like electrodes of all said semiconductor devices directly to said third tubular conductor at its remote end, and means connecting the other electrodes of each said valve array, respectively, directly to the remote ends of said first and second tubular conductors, whereby phase winding currents through said coaxial assembly are divided substantially equally among the semiconductor devices of each said valve array and unidirectional current from said valves traverses said assembly in directly reentrant relation, both said direct current and neutral terminals being adjacent the transformer end of said coaxial assembly.
Claim 3
Dependent Claim
58 words
Apparatus according to claim 1 wherein the mounting means for said valve arrays comprises an electrically conductive base member connected to said third tubular conductor and having two planar surfaces substantially perpendicular to said axis, the semiconductor devices of each said valve array being mounted upon said surfaces respectively, each in angularly balanced circumferential disposition about said axis.
Claim 4
Dependent Claim
46 words
Apparatus according to claim 2 wherein said conductive base member comprises a valve mounting enclosure having spaced apart side walls providing said planar surfaces and having fluid inlet and outlet ports, and means for supplying cooling fluid uNder pressure to the interior of said mounting enclosure.
Claim 5
Dependent Claim
99 words
Apparatus according to claim 3 wherein a plurality of pairs of spaced apart heat conductive mounting fingers are fixed upon the opposite outer side walls of said valve mounting enclosure in angularly balanced circumferential array with the radially outer finger of each pair electrically connected to said mounting enclosure, a semiconductor device interposed between and electrically connected to each said pair of fingers, end flanges on each of said first and second tubular conductors positioned externally adjacent said side walls respectively, and means connecting the radially inner fingers of each said pair of fingers to the associated end flange.
Claim 6
Dependent Claim
59 words
Apparatus according to claim 4 wherein said first and second tubular conductors are the inner and outer conductors of said coaxial assembly and said third tubular conductor is the intermediate conductor of said assembly, said intermediate tubular conductor being connected to said mounting enclosure and the innermost said tubular conductor passing axially through said mounting enclosure without electrical contact.
Claim 7
Dependent Claim
42 words
In combination with the apparatus of claim 1, a direct current line conductor disposed in parallel spaced relation with the axis of said coaxial assembly, and means connecting said direct current terminal to the proximate end of said direct current line conductor.
Claim 8
Dependent Claim
60 words
In combination with apparatus according to claim 1, a pair of direct current line conductors in parallel spaced apart relation, each said line conductor being in parallel spaced relation with the axis of said coaxial assembly, and means connecting the proximate ends of said direct current line conductors to said direct current line terminal and to said neutral terminal, respectively.
Claim 9
Dependent Claim
27 words
Apparatus according to claim 7 wherein said direct current line conductors are disposed in substantially coplanar relation with said axis and on substantially diametrically opposite sides thereof.
Claim 10
Dependent Claim
148 words
In electric current converter apparatus, a power transformer including an enclosure and having a pair of alternating current phase winding terminals and an intermediate neutral terminal mounted upon a wall of said enclosure, a pair of semiconductor valves each comprising a circumferential array of semiconductor devices disposed about an axis substantially perpendicular to said wall, a reentrant coaxial assembly of tubular conductors axially and concentrically disposed between said valves and said wall and providing a direct current terminal at the axial end thereof adjacent said wall, a pair of direct current line conductors extending parallel to said axis in parallel spaced relation therewith and on opposite sides thereof, means connecting the proximate ends of said direct current line conductors to said direct current line terminal and said neutral terminal, respectively, and means connecting each said phase winding terminals to the proximate end of one of said tubular conductors.
Claim 11
Dependent Claim
148 words
In electric current converter apparatus, a power transformer including an enclosure and having a pair of alternating current phase winding terminals and an intermediate neutral terminal mounted upon a wall of said enclosure, a pair of semiconductor valves each comprising a circumferential array of semiconductor devices disposed about an axis substantially perpendicular to said wall, a reentrant coaxial assembly of tubular conductors axially and concentrically disposed between said valves and said wall and providing a direct current terminal at the axial end thereof adjacent said wall, a pair of direct current line conductors extending parallel to said axis in parallel spaced relation therewith and on opposite sides thereof, means connecting the proximate ends of said direct current line conductors to said direct current line terminal and said neutral terminal, respectively, and means connecting each said phase winding terminals to the proximate end of one of said tubular conductors.
Claim 12
Dependent Claim
117 words
In electric current converter apparatus, a power transformer including an enclosure having a plurality of phase winding terminals and a neutral terminal mounted upon a wall of said enclosure, a plurality of semiconductor valves each having anode and cathode electrodes, conductor means connecting like electrodes of said valves to said phase winding terminals respectively, a direct current terminal disposed in proximity to said enclosure wall, conductor means connecting the other electrodes of all said valves to said direct current terminal, a pair of direct current bus conductors extending in substantially parallel spaced apart relation substantially perpendicular to said enclosure wall, and means connecting adjacent ends of said bus conductors to said direct current and neutral terminals, respectively.
Claim 13
Dependent Claim
117 words
In electric current converter apparatus, a power transformer including an enclosure having a plurality of phase winding terminals and a neutral terminal mounted upon a wall of said enclosure, a plurality of semiconductor valves each having anode and cathode electrodes, conductor means connecting like electrodes of said valves to said phase winding terminals respectively, a direct current terminal disposed in proximity to said enclosure wall, conductor means connecting the other electrodes of all said valves to said direct current terminal, a pair of direct current bus conductors extending in substantially parallel spaced apart relation substantially perpendicular to said enclosure wall, and means connecting adjacent ends of said bus conductors to said direct current and neutral terminals, respectively.
Claim 14
Dependent Claim
40 words
Electric current converter apparatus according to claim 10 wherein said conductor means comprises a coaxial array of tubular conductors disposed in parallel spaced relation between said direct current bus cOnductors and extending axially between said enclosure wall and said valves.
References Cited (Backward Citations)
US2825022A
Cited
US2999971A
Cited
US3223901A
Cited
US3397328A
Cited
US3502956A
Cited
US3708740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |