EP2577838A1 - Power supply and method for operating the power supply - Google Patents
Power supply and method for operating the power supplyInfo
- Publication number
- EP2577838A1 EP2577838A1 EP11720071.7A EP11720071A EP2577838A1 EP 2577838 A1 EP2577838 A1 EP 2577838A1 EP 11720071 A EP11720071 A EP 11720071A EP 2577838 A1 EP2577838 A1 EP 2577838A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- accumulator
- power supply
- current
- output
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
Definitions
- the invention relates to a power supply comprising a controller and a power unit, wherein at a first output of the power unit, a DC output voltage is applied, to which a load with variable power consumption can be connected.
- a supply network to which the power supply is connected usually has no perfect
- Examples are cable cars and chairlifts, which require a battery backup according to various regulations, to a control voltage (usually 24V) for emergency supply of
- buffer accumulators In this case, coming to use buffer accumulators should achieve the longest possible life in order to keep the maintenance of a plant low. With such rechargeable batteries, care is therefore taken to ensure a gentle charging and discharging process as well as protection against battery deep discharge.
- a UPS system is a comprehensive solution because the accumulator can be charged by the charge controller with a tuned and optimized charging current characteristic without affecting the load. At the same time, this method is very expensive, since usually a separate UPS module is required in addition to the power supply.
- the power supply is selected in such a way that there is a possibility for limiting the output current to a defined value above the rated current.
- Buffer accumulator is via a backup or a
- the output voltage of the power supply is adjusted so that it corresponds to the charging voltage of the accumulator. As long as the accumulator is not fully charged, the power supply is operated at its power limit.
- Controlled charge is not possible.
- the load will be charged after charging the accumulator
- the invention is based, for a
- Charging current or discharge current of the accumulator is set by controlling the DC output voltage. This is the result
- Charging current or discharge current of the accumulator can be determined without its own UPS assembly. The accumulator and the too
- Charging current This allows accurate control of the charging current by varying the output voltage.
- the load voltage fluctuates with the accumulator charging voltage, but this does not matter due to the tolerances of the connected load.
- the arrangement eliminates a charge controller circuit and still allows a controlled charge of the accumulator.
- the DC output voltage is passed via the current measuring device to the second output.
- a charging circuit is thus of an output terminal of the
- the charging circuit can branch off even before the output terminal or include its own secondary-side auxiliary winding of a transformer. In the latter case, there is a fixed coupling between this auxiliary winding and a secondary-side main winding. It is also here, for example, only an actuator and a pulse width modulator required.
- the load is by means of a first
- This first diode or this first switch in a simple manner prevent the charging current from flowing directly into the load.
- the first switch is only in the
- Current measuring device comprises a shunt resistor and is connected to the controller.
- the controller comprises a shunt resistor and is connected to the controller.
- a charging makes a complete switching away from the power supply necessary, is switched off in one case by means of control of the other switches.
- the output voltage is slightly lowered by means of control and the second diode couples the
- the power supply comprises a
- Power supply provides that by means of control for a predetermined duration, a lowering of the DC output voltage, so that the load is supplied by accumulator for this predetermined period. This serves, for example, the
- Fig. 9 voltage waveforms
- the power supply shown in Fig. 1 comprises a power unit 1 and a controller 5.
- Power unit 1 has a primary side P, which can be connected to a supply network. At a first output OUT1 a secondary side S of the converter 2 is based on a reference potential G DC output voltage U L. At this a load 3 is connected.
- the DC output voltage U L is fed via a current measuring device to a second output OUT2.
- this current measuring device comprises a shunt resistor Rl.
- Charging current measuring unit 5a of the controller 5 measured, indicated in Fig. By dotted arrows. Likewise, the
- Output voltage measuring unit 5b of the controller 5 measured. Between the second output OUT2 and the reference potential G, an accumulator 4 is turned on.
- the battery voltage U A is measured by means of a battery voltage measuring unit 5 c of the controller 5.
- the DC output voltage U L is influenced by means of control 5.
- the controller 5 comprises an influencing unit 5 d, which has a
- Output voltage controller set an increased setpoint when a drop in the charging current I L is detected. On the other hand, if the charging current I L increases because, for example, the load 3 consumes less current, the output voltage regulator is given a lowered nominal value.
- FIG. 2 essentially corresponds to that in FIG. 1, with the difference that a first diode D 1 is arranged between the second output OUT 2 and the load 3.
- the anode is connected to the second output OUT2, so that current flows from the accumulator 4 into the load 3 as soon as the DC output voltage U L drops below the accumulator voltage U A.
- a second diode D2 is arranged in Fig. 3 in the charging power line of the accumulator 4, wherein this for a
- Another switch can be used, which is switched off by the controller in buffer mode and thereby interrupts the charging power line.
- FIG. 4 A circuit variant for preventing a deep discharge of the accumulator 4 is shown in Fig. 4.
- the drawn in FIGS. 2 and 3, the first diode is replaced by a first switch Sl, which is controlled by means of control 5. If the supply by the power unit 1 is omitted, the controller 5 is further supplied by the accumulator 4.
- the first switch Sl is thus also at
- FIG. 1 Another circuit variant with deep discharge protection is shown in FIG. In this case, instead of a first switch S1, a first diode D1 is arranged again, and immediately before the accumulator 4, a second switch S2 is provided, controlled by means of control 5. In addition, a supply V for the controller 5 from the first output OUT1
- the battery 4 In buffer mode, if necessary, the battery 4 is de-energized by switching off the second switch S2 and thus protected against total discharge.
- the circuit variant shown in FIG. 6 essentially corresponds to that in FIG. 5, but the first diode D 1 is connected to a first controllable by means of a controller 5
- Battery conditioning sets optimized charging and discharging pulses to extend the life of the accumulator 4.
- the first switch Sl can be closed to the
- This circuit also provides deep discharge protection by the second switch S2 is opened.
- FIG. 1 A further circuit variant with a second switch S2 for protection against over-discharge is shown in FIG.
- an auxiliary switch SH is arranged, which allows a complete separation of the controller 5 from the accumulator 4. This ensures that even during a longer interruption of operation no discharge of the accumulator 4 by voltage divider of
- Accumulator voltage measuring unit 5c takes place.
- the accumulator 4 is thus enabled by all possible consumers.
- the DC output voltage U L is not raised, but lowered below the battery voltage U A. This results in a current flow from the accumulator 4 through the load circuit.
- a test load is usually connected to the accumulator at predetermined intervals and brought about a short-term load or the current flowing load current used as a load.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA885/2010A AT509967B1 (en) | 2010-06-01 | 2010-06-01 | POWER SUPPLY AND METHOD FOR OPERATING THE POWER SUPPLY |
PCT/EP2011/057173 WO2011151124A1 (en) | 2010-06-01 | 2011-05-05 | Power supply and method for operating the power supply |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2577838A1 true EP2577838A1 (en) | 2013-04-10 |
Family
ID=44118985
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11720071.7A Ceased EP2577838A1 (en) | 2010-06-01 | 2011-05-05 | Power supply and method for operating the power supply |
Country Status (6)
Country | Link |
---|---|
US (1) | US9774214B2 (en) |
EP (1) | EP2577838A1 (en) |
CN (1) | CN102906962B (en) |
AT (1) | AT509967B1 (en) |
RU (1) | RU2012157749A (en) |
WO (1) | WO2011151124A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013007704B4 (en) | 2013-05-03 | 2023-06-01 | Volkswagen Aktiengesellschaft | Battery protection by means of an active current sensor |
CN106774761A (en) * | 2016-11-25 | 2017-05-31 | 郑州云海信息技术有限公司 | A kind of electric supply installation and its method of supplying power to, server |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5528149A (en) * | 1994-12-23 | 1996-06-18 | International Business Machines Corporation | Test circuit for back-up battery |
GB2310089A (en) * | 1996-02-08 | 1997-08-13 | Nokia Telecommunications Oy | Battery charging; back-up power supply |
US5969436A (en) * | 1998-02-27 | 1999-10-19 | Lucent Technologies Inc. | Connect/disconnect circuit for a reserve battery and method of operation thereof |
DE202008002173U1 (en) * | 2008-02-16 | 2008-07-10 | Bacic, Robert | Power storage unit |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3828278A (en) * | 1973-07-13 | 1974-08-06 | Motorola Inc | Control circuit for disabling mos oscillator |
DE3410684A1 (en) * | 1984-03-23 | 1985-10-03 | Dieter Gräßlin Feinwerktechnik, 7742 St Georgen | Electronically controlled inductive voltage converter |
US4672293A (en) * | 1985-08-26 | 1987-06-09 | Crampton Timothy P | Power-supply/battery back-up power supply/battery charger combination |
JPH0576141A (en) * | 1991-09-13 | 1993-03-26 | Fujitsu Ltd | Rising characteristics improving unit for dc power supply |
US5254930A (en) | 1992-06-10 | 1993-10-19 | Digital Equipment Corporation | Fault detector for a plurality of batteries in battery backup systems |
WO1994013057A1 (en) * | 1992-11-27 | 1994-06-09 | Living Image Technology Pty. Ltd. | Power converter circuit |
JPH07194027A (en) * | 1993-12-27 | 1995-07-28 | Hitachi Ltd | Uninterruptible power supply apparatus |
JP3069498B2 (en) * | 1994-09-01 | 2000-07-24 | 富士通株式会社 | Charge / discharge device and electronic equipment |
DE4435005A1 (en) * | 1994-09-30 | 1996-04-11 | Boeke & Walterfang Gmbh | Circuit arrangement for supplying DC load, such as personal computer, from AC mains |
JP2002369407A (en) * | 2001-06-06 | 2002-12-20 | Hitachi Ltd | Backup power source with peak-cutting function |
JP2004312849A (en) * | 2003-04-04 | 2004-11-04 | Sanyo Denki Co Ltd | Uninterruptive power supply system with storage battery deterioration judging circuit |
CN1316710C (en) | 2003-05-13 | 2007-05-16 | 长沙交通学院 | Accumulator, super capacitor charge-discharge equalizing method and equipment |
JP2004364445A (en) | 2003-06-06 | 2004-12-24 | Matsushita Electric Ind Co Ltd | Discharge control device of backup battery |
JP2005016958A (en) * | 2003-06-23 | 2005-01-20 | Fanuc Ltd | Motor driving device |
JP4535298B2 (en) * | 2008-04-07 | 2010-09-01 | トヨタ自動車株式会社 | Vehicle power supply |
JP5210776B2 (en) * | 2008-09-25 | 2013-06-12 | 株式会社日立製作所 | Charge / discharge control device for lithium ion secondary battery |
-
2010
- 2010-06-01 AT ATA885/2010A patent/AT509967B1/en not_active IP Right Cessation
-
2011
- 2011-05-05 EP EP11720071.7A patent/EP2577838A1/en not_active Ceased
- 2011-05-05 US US13/700,885 patent/US9774214B2/en active Active
- 2011-05-05 RU RU2012157749/07A patent/RU2012157749A/en not_active Application Discontinuation
- 2011-05-05 WO PCT/EP2011/057173 patent/WO2011151124A1/en active Application Filing
- 2011-05-05 CN CN201180027045.2A patent/CN102906962B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5528149A (en) * | 1994-12-23 | 1996-06-18 | International Business Machines Corporation | Test circuit for back-up battery |
GB2310089A (en) * | 1996-02-08 | 1997-08-13 | Nokia Telecommunications Oy | Battery charging; back-up power supply |
US5969436A (en) * | 1998-02-27 | 1999-10-19 | Lucent Technologies Inc. | Connect/disconnect circuit for a reserve battery and method of operation thereof |
DE202008002173U1 (en) * | 2008-02-16 | 2008-07-10 | Bacic, Robert | Power storage unit |
Non-Patent Citations (1)
Title |
---|
See also references of WO2011151124A1 * |
Also Published As
Publication number | Publication date |
---|---|
RU2012157749A (en) | 2014-07-20 |
US20130119765A1 (en) | 2013-05-16 |
AT509967B1 (en) | 2015-09-15 |
US9774214B2 (en) | 2017-09-26 |
AT509967A1 (en) | 2011-12-15 |
WO2011151124A1 (en) | 2011-12-08 |
CN102906962B (en) | 2016-04-13 |
CN102906962A (en) | 2013-01-30 |
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