US3718850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor rectifier device
Assignee: Toshiba Corp
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Filing: 1971-07-15
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Granted: 1973-02-27
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Expires: 1991-07-15
Abstract
Abstract A semiconductor rectifier device includes a transformer enclosure having a transformer therein and a plurality of separate rectifier unit tanks. A plurality of output terminals each of which corresponds to a phase winding of the transformer are provided and extend through at least one of the side walls of the transformer enclosure. Each of the rectifier unit tanks contains semiconductor rectifier elements therein for rectifying a given phase of the output of the transformer and is mounted on the side wall of the transformer enclosure. The input terminals to the unit tanks are respectively connected to the output terminals of the transformer.
Inventors
- 👤 I Juri
- 👤 K Koguchi
- 👤 T Kuroiwa
- 👤 T Koken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:52
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
157 words
A semiconductor rectifier device comprising: a transformer enclosure having side walls; a polyphase electric power transformer unit mounted in said enclosure and having a plurality of leadout terminals which extend through at least one of the side walls of said transformer enclosure, said leadout terminals providing output terminals for the polyphase winding of said electric power transformer, a plurality of rectifier unit tanks mounted on at least one of the side walls of said transformer enclosure, each of said rectifier unit tanks including at least a semiconductor rectifier element therein and having input terminals which are respectively connected to said output terminals for rectifying an output current of said transformer; and, wherein a dc bus bar is further included and wherein said plurality of unit tanks are provided with walls and wherein the rectified output current of said transformer flows through said dc bus bar, while an inverse current flows through a wall of said unit tanks.
Claim 2
Dependent Claim
157 words
A semiconductor rectifier device comprising: a transformer enclosure having side walls; a polyphase electric power transformer unit mounted in said enclosure and having a plurality of leadout terminals which extend through at least one of the side walls of said transformer enclosure, said leadout terminals providing output terminals for the polyphase winding of said electric power transformer, a plurality of rectifier unit tanks mounted on at least one of the side walls of said transformer enclosure, each of said rectifier unit tanks including at least a semiconductor rectifier element therein and having input terminals which are respectively connected to said output terminals for rectifying an output current of said transformer; and, wherein a dc bus bar is further included and wherein said plurality of unit tanks are provided with walls and wherein the rectified output current of said transformer flows through said dc bus bar, while an inverse current flows through a wall of said unit tanks.
Claim 3
Dependent Claim
75 words
A semiconductor rectifier device according to claim 1, wherein a plurality of flanges are further included, each corresponding to a respective one of said plurality of unit tanks and electrically coupled thereto such that the rectified current flows through said dc bus bar, and then in turn flows through a wall of said unit tanks, whereby the rectified current is provided at the flange which is electrically coupled to the wall of said unit tanks.
Claim 4
Dependent Claim
41 words
A semiconductor rectifier device according to claim 1, wherein said plurality of unit tanks are provided with walls and wherein the rectified current flows through said dc bus bar while a neutral current flows through a wall of said unit tanks.
Claim 5
Dependent Claim
153 words
A semiconductor rectifier device comprising: a transformer enclosure having side walls; a polyphase electric power transformer unit mounted in said enclosure and having a plurality of leadout terminals which extend through at least one of the side walls of said transformer enclosure, said leadout terminals providing output terminals for the polyphase winding of said electric power transformer, a plurality of rectifier unit tanks mounted on at least one of the side walls of said transformer enclosure, each of said rectifier unit tanks including at least a semiconductor rectifier element therein and having input terminals which are respectively connected to said output terminals for rectifying an output current of said transformer; and, wherein a dc bus bar and a supporting member are further included, said unit tanks being supported on said dc load bus bar and said dc bus bar being mounted on said supporting member which in turn is fixed to said enclosure.
Claim 6
Dependent Claim
153 words
A semiconductor rectifier device comprising: a transformer enclosure having side walls; a polyphase electric power transformer unit mounted in said enclosure and having a plurality of leadout terminals which extend through at least one of the side walls of said transformer enclosure, said leadout terminals providing output terminals for the polyphase winding of said electric power transformer, a plurality of rectifier unit tanks mounted on at least one of the side walls of said transformer enclosure, each of said rectifier unit tanks including at least a semiconductor rectifier element therein and having input terminals which are respectively connected to said output terminals for rectifying an output current of said transformer; and, wherein a dc bus bar and a supporting member are further included, said unit tanks being supported on said dc load bus bar and said dc bus bar being mounted on said supporting member which in turn is fixed to said enclosure.
Claim 7
Dependent Claim
40 words
A semiconductor rectifier device according to claim 4, wherein a pipeline is provided for enabling a coolant to be applied to the interior of said rectifier device and wherein said pipeline is also used as said dc load bus bar.
Claim 8
Dependent Claim
33 words
A semiconductor rectifier device according to claim 4, wherein said plurality of rectifier unit tanks includes a serially connected condenser and resistor connected in parallel with said at least a semiconductor rectifier element.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |