US4985819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
AC-DC-AC apparatus having battery charging and discharging feature
Assignee: Mitsubishi Electric Corp
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Filing: 1989-10-18
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Granted: 1991-01-15
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Expires: 2009-10-18
Abstract
Abstract An inverter apparatus having a reactor which suppresses ripple components contained in a charging current for a battery and is saturated when a current having a value larger than a predetermined value flows therethrough to have a very small inductance and allowing a small size and a low cost thereof to be designed.
Inventors
- 👤 Haruyoshi Mori
- 👤 Nobuo Sashida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:50
CPC Classifications
H; H02; H02J; H02J9/00; H02J9/04; H02J9/06; H02J9/062; H02M; H02M1/00; H02M1/14; H02M5/00; H02M5/40; H02M5/42; H02M5/44; H02M5/453; H02M5/458; H02M5/4585
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
106 words
An inverter apparatus comprising: a rectifier which converts an AC voltage into a DC voltage and outputs the DC voltage; an inverter which converts said DC voltage into an AC voltage and supplies the AC voltage to a load; a battery which is connected in parallel to the DC voltage output side of said rectifier; and a reactor which is connected in series to said battery, suppresses ripple components contained in a charging current when said battery is charged by the DC output of said rectifier, and is saturated with a discharging current having a value larger than a predetermined value when said battery is discharged.
Claim 2
Dependent Claim
106 words
An inverter apparatus comprising: a rectifier which converts an AC voltage into a DC voltage and outputs the DC voltage; an inverter which converts said DC voltage into an AC voltage and supplies the AC voltage to a load; a battery which is connected in parallel to the DC voltage output side of said rectifier; and a reactor which is connected in series to said battery, suppresses ripple components contained in a charging current when said battery is charged by the DC output of said rectifier, and is saturated with a discharging current having a value larger than a predetermined value when said battery is discharged.
Claim 3
Dependent Claim
34 words
The inverter apparatus according to claim 1 provided with a magnetic flux canceling means which make substantially zero a magnetic flux due to a charging current flowing through the main winding of said reactor.
Claim 4
Dependent Claim
73 words
The inverter apparatus according to claim 2, wherein said magnetic flux canceling means comprises a shunt resistor connected in series to said reactor, a lowpass filter to which a detected voltage developed across said shunt resistor is input via a diode, and a winding which is supplied with an output of said lowpass filter to cancel and generate a magnetic flux due to a current flowing through the main winding of said reactor.
Claim 5
Dependent Claim
75 words
The inverter apparatus according to claim 2, wherein said magnetic flux canceling means comprises a magnetic flux detecting element which detects a magnetic flux due to a current flowing through the main winding of said reactor, a lowpass filter to which a detected voltage of said magnetic flux detecting element is input via a diode, and a winding which is supplied with an output of said lowpass filter to cancel and generate said magnetic flux.
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) | 1994-01-14 | 1994-07-16 | 1995-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-14 | 1998-07-16 | 1999-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-14 | 2002-07-16 | 2003-01-15 | $7700.00 | Window Closed / Lapsed |