CN102710010A - Power supply equipment - Google Patents
Power supply equipment Download PDFInfo
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- CN102710010A CN102710010A CN2012101621607A CN201210162160A CN102710010A CN 102710010 A CN102710010 A CN 102710010A CN 2012101621607 A CN2012101621607 A CN 2012101621607A CN 201210162160 A CN201210162160 A CN 201210162160A CN 102710010 A CN102710010 A CN 102710010A
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- Prior art keywords
- module
- power factor
- power supply
- factor calibration
- road
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- 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
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
- H02J1/102—Parallel operation of dc sources being switching converters
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- 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
- H02J5/00—Circuit arrangements for transfer of electric power between ac networks and dc networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/23—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only arranged for operation in parallel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses power supply equipment, which belongs to the field of power supply and distribution. The power supply equipment is designed for solving the problems of larger occupied space and high cost the power supply equipment in the prior art. The power supply equipment comprises a plurality of alternating current/direct current conversion units of which the direct current output ends are connected in parallel, wherein each alternating current/direct current conversion unit comprises a first alternating current input end, a first electromagnetic interference filtering and protecting module, a first rectification unit, a first power factor correction module, a second alternating current input end, a second electromagnetic interference filtering and protecting module, a second rectification unit, a second power factor correction module and a combination module; the first alternating current input end, the first electromagnetic interference filtering and protecting module, the first rectification unit and the first power factor correction module are connected in sequence; the second alternating current input end, the second electromagnetic interference filtering and protecting module, the second rectification unit and the second power factor correction module are connected in sequence; the combination module is respectively connected with the first power factor correction module and the second power factor correction module; and a direct current/direct current conversion module is connected with the direct current output end and the combination circuit.
Description
Technical field
The present invention relates to supply the distribution field, relate in particular to a kind of power supply unit.
Background technology
In communication technical field; The work of information communication device be unable to do without stable power; Wherein the employed power type of information communication device is divided into AC and DC, and corresponding AC power equipment or the DC power supply device of then need adopting supplied power to information communication device.
For the information communication device of supplying power through AC power equipment; For improving the reliability of power supply; Usually need to support the 1+1 backup (for example two-way AC network) of input power supply and the N+N backup of ac/dc converting unit; Promptly one tunnel input power supply is given N ac/dc converting unit power supply; Other one tunnel input power supply is other N ac/dc converting unit power supply, thereby guarantees that information communication device can operate as normal when one tunnel input power failure or 1 ac/dc converting unit fault.
In the prior art; For realizing the N+N backup of AC/DC converting unit, on power-supply device, can be provided with corresponding 2N ac/dc converting unit, one tunnel input power supply can connect N ac/dc converting unit wherein; And another road input power supply connects other each ac/dc converting unit of N; To convert AC power to DC power supply load is supplied power, in each ac/dc converting unit, be provided with a plurality of functional modules to realize the conversion of AC-to DC; Yet the repeating to be provided with of a plurality of functional modules not only enlarged the shared space of power-supply device, also improved the cost of power-supply device.
Summary of the invention
Embodiments of the invention provide a kind of power supply unit of saving spatial area and cost.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of power supply unit comprises: a plurality of ac/dc converting units of dc output end parallel connection; Said ac/dc converting unit comprises:
First ac input end that is linked in sequence, first electromagnetic interference (ElectroMagnetic Interference; Hereinafter to be referred as EMI) filtering and protection module, first rectification unit and first power factor calibration (Power Factor Correction is hereinafter to be referred as PFC) module;
Second ac input end that is linked in sequence, the 2nd EMI filtering and protection module, second rectification module and the 2nd PFC module;
Close the road module, the said road module of closing connects a said PFC module and said the 2nd PFC module respectively;
The DC/DC conversion module connects said dc output end and the said road module of closing;
Said rectification module, the AC rectification that is used for input is a direct current;
Said PFC module is used for detecting and eliminate the interference of the high-frequency harmonic of said direct current;
The said road module of closing is used for switching according to the voltage that closes module two ends, road, makes a said PFC module and the conducting of said DC/DC conversion module and/or the 2nd PFC module and the conducting of said DC/DC conversion module;
Said DC/DC conversion module is used for converting said direct current into needed target direct current.
The power supply unit that the embodiment of the invention provides; Through being arranged at EMI filtering different in the same ac/dc converting unit and protection module, rectification module and PFC module, the interference signal in the alternating current of filtering input is carried out rectification and PFC to alternating current respectively; To form galvanic current; And the direct current that will close the output of road module is needed target direct current through shared DC/DC conversion module converts, and the load that is connected is supplied power, and avoided in power supply unit, repeating to be provided with the DC/DC conversion module that cost is higher and take up room bigger; To have reduced the cost of power supply unit, reduced the shared space of power supply unit.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the described power supply unit of the embodiment of the invention;
Fig. 2 is the structural representation of the embodiment of the invention 1 described ac/dc converting unit;
Fig. 3 is the embodiment of the invention 2 described structural representations that close the ac/dc converting unit of road module employing diode;
Fig. 4 is the structural representation that the embodiment of the invention 3 described combiner units adopt the ac/dc converting unit of MOSFET;
Fig. 5 is the structural representation of the embodiment of the invention 4 described power supply units.
Embodiment
Below in conjunction with accompanying drawing embodiment of the invention power supply unit is described in detail.
Should be clear and definite, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Embodiment 1
A kind of power supply unit in scene as shown in Figure 1, comprising: a plurality of ac/dc converting units of dc output end parallel connection;
Said ac/dc converting unit, as shown in Figure 2, comprising:
First ac input end that is linked in sequence, an EMI filtering and protection module, first rectification unit and a PFC module;
Second ac input end that is linked in sequence, the 2nd EMI filtering and protection module, second rectification module and the 2nd PFC module;
Close the road module, the said road module of closing connects a said PFC module and said the 2nd PFC module respectively;
The DC/DC conversion module connects said dc output end and the said road module of closing;
Said rectification module, the AC rectification that is used for input is a direct current;
Said PFC module is used for detecting and eliminate the interference of the high-frequency harmonic of said direct current;
The said road module of closing is used for switching according to the voltage that closes module two ends, road, makes a said PFC module and the conducting of said DC/DC conversion module and/or said the 2nd PFC module and the conducting of said DC/DC conversion module;
Said DC/DC conversion module is used for converting said direct current to needed target direct current;
Said EMI filtering and protection module are used for the interference signal of filtering input power supply unit and by the inner interference signal that electronic component produced of power supply unit.
The load that the dc output end link information communication equipment of said parallel connection is inner, the gross power of said load is P
Total, the rated output power of each ac/dc converting unit is P
OutWork as P
TotalAnd P
OutRatio when being integer, said power supply unit comprises: N ac/dc converting unit, wherein
For example, as the gross power P of load
TotalBe 1000 watts, the rated output power P of each ac/dc converting unit
OutBe 200 watt-hours, then said power supply unit is that load is supplied power and just can be satisfied the demand of bearing power through 5 ac/dc converting units.Work as P
TotalAnd P
OutRatio when being non-integer, said power supply unit comprises: N ac/dc converting unit, wherein
For example, as the gross power P of load
TotalBe 1000 watts, the rated output power P of each ac/dc converting unit
OutBe 180 watt-hours, then said power supply unit need just can satisfy the load desired power through 6 ac/dc converting units.
First ac input end carries out distribution by the different alternating current of two-way as the input power supply with second ac input end, and for example first ac input end can carry out distribution by public electric wire net, and second ac input end can carry out distribution by uninterrupted power supply; When carrying out distribution; Respectively the alternating current of different input power supply inputs is shunted; Input to the power supply unit from first ac input end and second ac input end of N ac/dc converting unit respectively again; For example import through first ac input end of N ac/dc converting unit, import through second ac input end of N ac/dc converting unit from the alternating current of uninterrupted power supply from the alternating current of public electric wire net.
For making description clearer, be that example is described with an ac/dc converting unit.After in the alternating current input power supply unit; At first through EMI filtering in the ac/dc converting unit and the interference signal in the protection module filtering alternating current; And for power supply unit provides lightning strike protection; With the influence of the interference-free signal of protection power supply unit, said interference signal possibly produced by public electric wire net or the uninterrupted power supply as the input power supply, also possibly produced by the electronic component in each module of power supply unit inside; Through rectification module filtered alternating current is carried out rectification then, convert alternating current into direct current; Again through the high-frequency harmonic component in the circuit that alternating current acted on after PFC module detection filter and the rectification; And offset high-frequency harmonic component useless in the said circuit through producing a harmonic component identical with said high-frequency harmonic component amplitude, that phase place is opposite; Reduce the reactive power that produces in the power supply unit with this; Improve the conversion efficiency of power supply unit; And avoid the operate as normal of the interference effect components and parts of high-frequency harmonic component, wherein can select the active PFC module or the PFC module of passive type for use, do not limit it at this according to actual conditions the one PFC module and the 2nd PFC module; Secondly; Closing the road module switches according to the voltage at its two ends; Make a said PFC module and said DC/DC conversion module and/or the 2nd PFC module conducting and the conducting of said DC/DC conversion module; For example; The galvanic voltage of ordering as a PFC module A of place is galvanic voltage that 312 volts, the 2nd PFC module B of place are ordered when being 310 volts, then can supply power to load through the direct current that the higher A of galvanic voltage is ordered, and the direct current that this A is ordered carries out through the alternating current that first ac input end is provided obtaining behind filtering, rectification and the PFC of interference signal; At last; Convert 312 volts direct current to stable-48 volts of target direct currents through the DC/DC conversion module, load is supplied power, wherein to different loads; The target direct current that needs different voltages; Therefore the component parameters in the DC/DC conversion module is also different, and for example the needed direct current of telecommunication apparatus is-48 volts, and the needed direct current of server is 12 volts etc.
When the alternating current fault that first ac input end is imported, the alternating current that promptly public electric wire net provided occurs when unusual, first ac input end 1, first ac input end 2 ... The alternating current fault of first ac input end N input; At this moment; Can learn that the pairing alternating current input voltage of first ac input end descends; And exceed the scope of the input voltage that the ac/dc converting unit allowed, then the ac/dc converting unit is stopped using the alternating current that first ac input end is imported, and switches the alternating current that uses second ac input end to import; And convert this alternating current into needed target direct current load is supplied power, make power supply unit realize the backup of input power supply with this.
In addition, in actual application, according to the difference of the galvanic voltage that alternating current obtained of first ac input end and second ac input end input hour, promptly the difference of A point and the B voltage of ordering is less; At this moment, for the ac/dc converting unit, can use the alternating current of first ac input end and second ac input end input simultaneously, and load supplied power through the target direct current of changing out; When one tunnel input power supply breaks down; For example first ac input end import the alternating current fault time; The galvanic voltage that B is ordered can descend, and exceeds the scope of the input voltage that the ac/dc converting unit allowed, and can't continue to use; Then the ac/dc converting unit is stopped using the alternating current of pairing first ac input end input of the public electric wire net that breaks down; Only use the alternating current of second ac input end input, and the alternating current of second ac input end input is changed, thereby obtain needed target direct current.
The power supply unit that the embodiment of the invention provides; Through being arranged at EMI filtering different in the same ac/dc converting unit and protection module, rectification module and PFC module, the interference signal in the alternating current of filtering input is carried out rectification and PFC to alternating current respectively; To form galvanic current; And the direct current that will close the output of road module is needed target direct current through shared DC/DC conversion module converts, and the load that is connected is supplied power, and avoided in power supply unit, repeating to be provided with the DC/DC conversion module that cost is higher and take up room bigger; To have reduced the cost of power supply unit, reduced the shared space of power supply unit.
Embodiment 2
According to the scene of embodiment 1 described power supply unit through the switching of the alternating current that closes the road module and realize input, optional, the said road module of closing can be as shown in Figure 3, comprising:
Two diodes, the anode of said two diodes connect a PFC module and the 2nd PFC module respectively, and negative electrode is connected with said DC/DC conversion module.
With an ac/dc converting unit is that example is described, and the voltage of ordering as A is 312 volts, when the voltage that B is ordered is 310 volts, and according to the characteristic of the unidirectional conducting of diode, the diode current flow that a PFC module is connected; At this moment, on the diode that a PFC module is connected, produce pressure drop, for example 1 volt, then the C voltage of ordering is 311 volts; The voltage difference that B point and C are ordered is then turn-offed the direct current that only uses A to order with the pairing diode of B point less than 1 volt.
When alternating current fault through the input of first ac input end; The voltage that A point and C are ordered descends; And when exceeding the scope of the input voltage that the ac/dc converting unit allowed; The voltage that C is ordered is lower than the voltage that B is ordered, and then with the pairing diode current flow of B point, switches the alternating current that uses second ac input end to import; Convert the target direct current into through the ac/dc conversion equipment load is supplied power, thereby realize that second ac input end and the corresponding input power supply of first ac input end switch use.
According to said process, in N ac/dc converting unit, carry out and above-mentioned similar action, to realize the switching between two-way input power supply in N the ac/dc converting unit.
The said road module of closing is when realizing the alternating current that first ac input end and second ac input end are imported switched through diode; The circuit that closes the road module is comparatively simple; Control is easier to realize, has further reduced the cost of the power supply unit that comprises a plurality of ac/dc converting units.
Embodiment 3
According to the scene of embodiment 1 described power supply unit through the switching of the alternating current that closes the road module and realize input, optional, the said road module of closing can be as shown in Figure 4, comprising:
Be provided with two metal oxide semiconductor field effect tubes (Metal-Oxide-Semiconductor Field-Effect Transistor is hereinafter to be referred as MOSFET) between a said PFC module and the said DC/DC conversion module and between said the 2nd PFC module and the said DC/DC conversion module; The source electrode of said MOSFET is connected PFC module and DC/DC conversion module respectively with drain electrode.
Described power supply unit comprises:
Close the road detection module, connect a said PFC module, the 2nd PFC module and DC/DC conversion module respectively;
Close the road control module, connect the said grid that closes road detection module and said two MOSFET respectively.
For making description more clear, be that example is described with an ac/dc converting unit, when power supply unit is started working; Close the road control module and be in the acquiescence working method; Be arbitrary MOSFET that closes in the module of road that opens, for example open and the corresponding MOSFET of second ac input end that then the B voltage of ordering loads on the C point through MOSFET; On this MOSFET, there are a less pressure drop, for example 0.2 volt this moment; Close the voltage that the involutory road of road detection module module ends A point, B point and C order and detect, for example the A point voltage is that 311 volts, B point voltage are that 310 volts, C point voltage are 309.8 volts; When closing the road detection module and detect voltage that voltage that A order orders greater than C and lie prostrate; Through closing conducting and the shutoff of road control module control MOSFET realization MOSFET; Thereby switch the alternating current that bigger pairing first ac input end of A point of working voltage difference is imported, make direct current that the DC/DC conversion module is ordered according to this A change out the target direct current load is supplied power.
When alternating current fault through the input of first ac input end; When the voltage that A point and C are ordered descends; Close the road detection module and detect the voltage that voltage that B orders is ordered greater than C; Then close the road module and switch the direct current that output B order, and will close the direct current that the road module exports through the DC/DC conversion module and convert the target direct current into, stable power supply is carried out in the load that is connected.
According to said process, in N ac/dc converting unit, carry out and above-mentioned similar action, to realize the switching between two-way input power supply in N the ac/dc converting unit.
In addition, in practical application, possibly exist the voltage difference of the alternating current that two-way input power supply imports less, thereby make N ac/dc converting unit use two-way to import the situation of the alternating current that power supply imports simultaneously.
Close the voltage at module two ends, road through closing road detection module detection; And through closing the conducting that the MOSFET in the module of road is closed in road control module control; Thereby realize switching the alternating current that uses first ac input end and second ac input end to import; And, improved the conversion efficiency of power supply unit because the characteristic of MOSFET makes the loss of direct current on MOSFET less.
Embodiment 4
According to the arbitrary described power supply unit of embodiment 1-3, when ac/dc converting unit is whole when damaging, the ac/dc converting unit can occur can't normally output loading desired power; Then can cause the electricity shortage of load and the situation that can't run well; Further, for addressing the above problem said power supply unit; As shown in Figure 5, comprising: N+1 ac/dc converting unit.
When operate as normal; The dc output end of N+1 ac/dc converting unit can realize under the effect of the DC/DC conversion module of inside that the galvanic electric current between N+1 the DC/DC conversion module carries out current-sharing, thereby with the excessive situation that makes the ac/dc converting unit overload protection occur of the electric current of avoiding an ac/dc converting unit dc output end; The whole appearance of single ac/dc converting unit in said power supply unit damages, and for example, when ac/dc converting unit 1 went wrong, ac/dc converting unit 1 can't provide the target direct current for load; At this moment; Detect through the voltage and current of the DC/DC conversion module in each ac/dc converting unit dc output end; Improve the not output current of N ac/dc converting unit dc output end of fault; Keep the power of power supply unit output constant, further promoted the reliability of power supply unit power supply.
The power supply unit that the embodiment of the invention provides; Through being arranged at EMI filtering different in the same ac/dc converting unit and protection module, rectification module and PFC module, the interference signal in the alternating current of filtering input is carried out rectification and PFC to alternating current respectively; To form galvanic current; And the direct current that will close the output of road module is needed target direct current through shared DC/DC conversion module converts, and the load that is connected is supplied power, and avoided in power supply unit, repeating to be provided with the DC/DC conversion module that cost is higher and take up room bigger; To have reduced the cost of power supply unit, reduced the shared space of power supply unit.
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by said protection range with claim.
Claims (10)
1. power supply unit comprises: a plurality of ac/dc converting units of dc output end parallel connection is characterized in that said ac/dc converting unit comprises:
First ac input end that is linked in sequence, the first electromagnetic interference filtering and protection module, first rectification unit and the first power factor calibration module;
Second ac input end that is linked in sequence, the second electromagnetic interference filtering and protection module, second rectification module and the second power factor calibration module;
Close the road module, the said road module of closing connects said first power factor calibration module and the said second power factor calibration module respectively;
The DC/DC conversion module connects said dc output end and the said road module of closing;
Said rectification module, the AC rectification that is used for input is a direct current;
Said power factor calibration module is used for detecting and eliminate the interference of the high-frequency harmonic of said direct current;
The said road module of closing is used for switching according to the voltage that closes module two ends, road, makes said first power factor calibration module and the conducting of said DC/DC conversion module and/or the said second power factor calibration module and the conducting of said DC/DC conversion module;
Said DC/DC conversion module is used for converting said direct current into needed target direct current.
2. equipment according to claim 1 is characterized in that, the said road module of closing comprises:
Two diodes, the anode of said two diodes connect the first power factor calibration module and the second power factor calibration module respectively, and negative electrode is connected with said DC/DC conversion module.
3. equipment according to claim 1 is characterized in that, the said road module of closing comprises:
Be provided with two metal oxide semiconductor field effect tubes between said first power factor calibration module and the said DC/DC conversion module and between said second power factor calibration module and the said DC/DC conversion module; The source electrode of said metal oxide semiconductor field effect tube is connected power factor calibration module and DC/DC conversion module respectively with drain electrode.
4. equipment according to claim 3 is characterized in that, also comprises:
Close the road detection module, connect the said first power factor calibration module, the second power factor calibration module and DC/DC conversion module respectively.
5. equipment according to claim 4 is characterized in that, also comprises:
Close the road control module, connect the said grid that closes road detection module and said two metal oxide semiconductor field effect tubes respectively.
6. according to the arbitrary described equipment of claim 1-5, it is characterized in that the gross power of said load is P
Total, the rated output power of each ac/dc converting unit is P
Out
Work as P
TotalAnd P
OutRatio when being integer, said power supply unit comprises: N said ac/dc converting unit, wherein
7. equipment according to claim 6 is characterized in that, works as P
TotalAnd P
OutRatio when being non-integer, said power supply unit comprises: N said ac/dc converting unit, wherein
8. according to claim 6 or 7 described equipment, it is characterized in that, comprising: N+1 said ac/dc converting unit.
9. equipment according to claim 1 is characterized in that, the said first power factor calibration module is active power factor calibration module or the said power factor calibration module of passive type.
10. equipment according to claim 1 is characterized in that, the said second power factor calibration module is active power factor calibration module or the said power factor calibration module of passive type.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101621607A CN102710010A (en) | 2012-05-23 | 2012-05-23 | Power supply equipment |
| PCT/CN2012/082058 WO2013174088A1 (en) | 2012-05-23 | 2012-09-26 | Power supply apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101621607A CN102710010A (en) | 2012-05-23 | 2012-05-23 | Power supply equipment |
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| Publication Number | Publication Date |
|---|---|
| CN102710010A true CN102710010A (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101621607A Pending CN102710010A (en) | 2012-05-23 | 2012-05-23 | Power supply equipment |
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| WO (1) | WO2013174088A1 (en) |
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| CN107769365A (en) * | 2017-09-25 | 2018-03-06 | 上海卫星工程研究所 | The control system of the satellite electron product secondary power supply fail-over unit of restructural |
| CN107612033A (en) * | 2017-10-19 | 2018-01-19 | 清华大学 | A kind of AC/DC universal port device and conversion method |
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| CN110556826A (en) * | 2019-09-17 | 2019-12-10 | 深圳供电局有限公司 | AC power supply system |
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