Patent US5548504A successfully refreshed from Google Patents.
US5548504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power line linking apparatus for linking a power generator to a commercial power line
Assignee: Canon Inc
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Filing: 1993-10-04
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Granted: 1996-08-20
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Expires: 2013-10-04
Abstract
Abstract A line linking inverter achieves load balance and protection for loss of one phase in linking with a single-phase three-wire distribution. Input terminals for connection with a solar cell array or the like (1) are connected in parallel to a pair of power conversion units (21, 22), and output terminals of the pair of power conversion units (21, 22) are connected in series. The pair of power conversion uniys (21, 22) are simultaneously controlled by a controller (3).
Inventors
- 👤 Nobuyoshi Takehara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:15
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/483; H02M7/49
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
56 words
A line linking apparatus comprising: a DC power generator for generating power by solar cells; a pair of DC/AC converters connected in parallel to output terminals of said DC power generator; and a wiring for interconnecting output terminals of said pair of DC/AC converters and terminals of a commercial power line in a single-phase, three-wire mode.
Claim 2
Dependent Claim
56 words
A line linking apparatus comprising: a DC power generator for generating power by solar cells; a pair of DC/AC converters connected in parallel to output terminals of said DC power generator; and a wiring for interconnecting output terminals of said pair of DC/AC converters and terminals of a commercial power line in a single-phase, three-wire mode.
Claim 3
Dependent Claim
71 words
A line linking apparatus comprising: a DC power generator for generating power by solar cells; a pair of DC/AC converters connected in parallel to output terminals of said DC power generator; a pair of transformers connected in series, respectively, to output terminals of said pair of DC/AC converters; and a wiring for interconnecting terminals of said pair of transformers and terminals of a commercial power line in a single-phase, three-wire mode.
Claim 4
Dependent Claim
71 words
A line linking apparatus comprising: a DC power generator for generating power by solar cells; a pair of DC/AC converters connected in parallel to output terminals of said DC power generator; a pair of transformers connected in series, respectively, to output terminals of said pair of DC/AC converters; and a wiring for interconnecting terminals of said pair of transformers and terminals of a commercial power line in a single-phase, three-wire mode.
Claim 5
Dependent Claim
115 words
A line linking apparatus comprising: a DC power generator for generating power by solar cells; a pair of DC/AC converters connected in parallel to output terminals of said DC power generator; control means for detecting an over-voltage for each of said pair of DC/AC converters independently based on an AC output voltage value and a DC input voltage value and controlling go that operation of said converters is stopped in the event of an overvoltage; a pair of transformers connected in series respectively to output terminals of said pair of DC/AC converters; and a wiring for interconnecting terminals of said pair of transformers and terminals of a commercial power line in a single-phase, three-wire mode.
Claim 6
Dependent Claim
115 words
A line linking apparatus comprising: a DC power generator for generating power by solar cells; a pair of DC/AC converters connected in parallel to output terminals of said DC power generator; control means for detecting an over-voltage for each of said pair of DC/AC converters independently based on an AC output voltage value and a DC input voltage value and controlling go that operation of said converters is stopped in the event of an overvoltage; a pair of transformers connected in series respectively to output terminals of said pair of DC/AC converters; and a wiring for interconnecting terminals of said pair of transformers and terminals of a commercial power line in a single-phase, three-wire mode.
Claim 7
Dependent Claim
70 words
A line linking apparatus comprising: a DC power generator for generating power by solar cells; a pair of DC/AC converters connected in parallel to output terminals of said DC power generator; a pair of high-frequency filters connected in series, respectively, to said pair of DC/AC converters; and a wiring for interconnecting terminals of said pair of high-frequency filters and terminals of a commercial power line in a single-phase, three-wire mode.
Claim 8
Dependent Claim
70 words
A line linking apparatus comprising: a DC power generator for generating power by solar cells; a pair of DC/AC converters connected in parallel to output terminals of said DC power generator; a pair of high-frequency filters connected in series, respectively, to said pair of DC/AC converters; and a wiring for interconnecting terminals of said pair of high-frequency filters and terminals of a commercial power line in a single-phase, three-wire mode.
Claim 9
Dependent Claim
86 words
A line linking apparatus comprising: a DC power generator for generating power by solar cells; a pair of DC/AC converters connected in parallel to output terminals of said DC power generator; a pair of transformers connected in series, respectively, to output terminals of said pair of DC/AC converters: a pair of high-frequency filters connected in series respectively to said pair of transformers; and a wiring for interconnecting terminals of said pair of high-frequency filters and terminals of a commercial power line in a single-phase, three-wire mode.
Claim 10
Dependent Claim
86 words
A line linking apparatus comprising: a DC power generator for generating power by solar cells; a pair of DC/AC converters connected in parallel to output terminals of said DC power generator; a pair of transformers connected in series, respectively, to output terminals of said pair of DC/AC converters: a pair of high-frequency filters connected in series respectively to said pair of transformers; and a wiring for interconnecting terminals of said pair of high-frequency filters and terminals of a commercial power line in a single-phase, three-wire mode.
Claim 11
Dependent Claim
130 words
A line linking apparatus comprising: a DC power generator for generating power by solar cells; a pair of DC/AC converters connected in parallel to output terminals of said DC power generator; control means for detecting an over-voltage for each of said pair of DC/AC converters independently based on an AC output voltage value and a DC input voltage value and controlling so that operation of said converters is stopped in the event of an overvoltage; a pair of transformers connected in series, respectively, to output terminals of said pair of DC/AC converters; a pair of high-frequency filters connected in series respectively to said pair of transformers; and a wiring for interconnecting terminals of said pair of high-frequency filters and terminals of a commercial power line in a single-phase, three-wire mode.
Claim 12
Dependent Claim
130 words
A line linking apparatus comprising: a DC power generator for generating power by solar cells; a pair of DC/AC converters connected in parallel to output terminals of said DC power generator; control means for detecting an over-voltage for each of said pair of DC/AC converters independently based on an AC output voltage value and a DC input voltage value and controlling so that operation of said converters is stopped in the event of an overvoltage; a pair of transformers connected in series, respectively, to output terminals of said pair of DC/AC converters; a pair of high-frequency filters connected in series respectively to said pair of transformers; and a wiring for interconnecting terminals of said pair of high-frequency filters and terminals of a commercial power line in a single-phase, three-wire mode.
Claim 13
Dependent Claim
115 words
A line linking apparatus comprising: a DC power generator for generating power by solar cells; a pair of DC/AC converters connected in parallel to output terminals of said DC power generator; control means for detecting an over-current for each of said pair of DC/AC converters independently base don an AC output current value and a DC input current value and controlling so that operation of said converters is stopped in the event of an overcurrent; a pair of transformers connected in series, respectively, to output terminals of said pair of DC/AC converters; and a wiring for interconnecting terminals of said pair of transformers and terminals of a commercial power line in a single-phase, three-wire mode.
Claim 14
Dependent Claim
115 words
A line linking apparatus comprising: a DC power generator for generating power by solar cells; a pair of DC/AC converters connected in parallel to output terminals of said DC power generator; control means for detecting an over-current for each of said pair of DC/AC converters independently base don an AC output current value and a DC input current value and controlling so that operation of said converters is stopped in the event of an overcurrent; a pair of transformers connected in series, respectively, to output terminals of said pair of DC/AC converters; and a wiring for interconnecting terminals of said pair of transformers and terminals of a commercial power line in a single-phase, three-wire mode.
Claim 15
Dependent Claim
58 words
A line linking apparatus comprising: an AC power generator for generating power by a wind power generator; a pair of AC/AC converters connected in parallel to output terminals of said AC power generator; and a wiring for interconnecting output terminals of said pair of AC/AC converters and terminals of a commercial power line in a single-phase, three-wire mode.
Claim 16
Dependent Claim
58 words
A line linking apparatus comprising: an AC power generator for generating power by a wind power generator; a pair of AC/AC converters connected in parallel to output terminals of said AC power generator; and a wiring for interconnecting output terminals of said pair of AC/AC converters and terminals of a commercial power line in a single-phase, three-wire mode.
Claim 17
Dependent Claim
74 words
A line linking apparatus comprising: an AC power generator for generating power by a wind power generator; a pair of AC/AC converters connected in parallel to output terminals of said AC power generator; a pair of transformers connected in series, respectively, to output terminals of said pair of AC/AC converters; and a wiring for interconnecting output terminals of said pair of transformers and terminals of a commercial power line in a single-phase, three-wire mode.
Claim 18
Dependent Claim
74 words
A line linking apparatus comprising: an AC power generator for generating power by a wind power generator; a pair of AC/AC converters connected in parallel to output terminals of said AC power generator; a pair of transformers connected in series, respectively, to output terminals of said pair of AC/AC converters; and a wiring for interconnecting output terminals of said pair of transformers and terminals of a commercial power line in a single-phase, three-wire mode.
Claim 19
Dependent Claim
118 words
A line linking apparatus comprising: an AC power generator for generating power by a wind power generator; a pair of AC/AC converters connected in parallel to output terminals of said AC power generator; control means for detecting an overvoltage for each of said pair of AC/AC converters independently based on an AC output voltage value and an AC input voltage value and controlling so that operation of said converters is stopped in the event of an overvoltage; a pair of transformers connected in series respectively to output terminals of said pair of AC/AC converters; and a wiring for interconnecting output terminals of said pair of transformers and terminals of a commercial power line in a single-phase, three-wire mode.
Claim 20
Dependent Claim
118 words
A line linking apparatus comprising: an AC power generator for generating power by a wind power generator; a pair of AC/AC converters connected in parallel to output terminals of said AC power generator; control means for detecting an overvoltage for each of said pair of AC/AC converters independently based on an AC output voltage value and an AC input voltage value and controlling so that operation of said converters is stopped in the event of an overvoltage; a pair of transformers connected in series respectively to output terminals of said pair of AC/AC converters; and a wiring for interconnecting output terminals of said pair of transformers and terminals of a commercial power line in a single-phase, three-wire mode.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-08-20 | 2000-02-19 | 2000-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-20 | 2004-02-19 | 2004-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-20 | 2008-02-19 | 2008-08-20 | $7700.00 | Window Closed / Lapsed |