CN104426236B - Power supply supply converting system and control method thereof - Google Patents
Power supply supply converting system and control method thereof Download PDFInfo
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- CN104426236B CN104426236B CN201310403869.6A CN201310403869A CN104426236B CN 104426236 B CN104426236 B CN 104426236B CN 201310403869 A CN201310403869 A CN 201310403869A CN 104426236 B CN104426236 B CN 104426236B
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Abstract
The invention discloses a kind of power supply supply converting system and receive an external power source, and a load is powered.This power supply supply converting system comprises at least one main power source device, at least one auxiliary power unit, a main switch, an auxiliary switch and a control unit.When this control unit detect this external power source recover normal power supply time, this control unit turns on this main switch with this external power source of involution, and maintains this auxiliary power unit jointly to this load supplying.Wherein, this control unit controls the output voltage output voltage more than this auxiliary power unit of this main power source device.When this control unit detects this main power source device completely to this load supplying, this control unit turns off this auxiliary power unit to this load supplying.
Description
Technical field
The relevant a kind of power supply supply converting system of the present invention and control method, espespecially a kind of conversion soft to load supplying
Power supply supply converting system and control method thereof.
Background technology
In order to maintain stability and the reliability of power supply, it is possible to when power supply occurs abnormal interruption or unstable power supply
Time, additionally it is possible to shoulder the ability of temporary transient emergency service power supply, therefore, in addition to main power source is supplied, in addition it is also necessary to have standby electricity
The support in source, can reach the power supply mode of not power-off.When main power source (usually civil power) normal power supply, this main power source pair
Load supplying, meanwhile, this stand-by power supply (can be rechargeable battery) is also charged or the operation of energy storage by this main power source, with in response to
When there is abnormal power supply in this main power source, it is possible to immediately switch to this stand-by power supply to provide continuation supply to load.Furthermore,
Recover normal power supply once this main power source, the task of load supplying is then converted back this main power source by this stand-by power supply and is responsible for.
Only, in existing Practical Operation, it is typically due to directly be switched back into this main power source by this stand-by power supply instantaneously and powers,
So that load is provided needed for total system load, but, transient state produced by this stand-by power supply of instantaneous trip is surged electric current
(inrush current), and cause input power to produce voltage dip (voltage dip), cause system to work as machine (shut
Down) caused spring (re-bounce) must be turned back on abnormal, even cause the infringement to system service life.
Therefore, a kind of power supply supply converting system and control method thereof how are designed, by soft turn of load supplying
Change, to improve power supply stability and reliability, to reduce the produced transient state of power supply switching and surge electric current, use the longevity improving system
Life, and improve the obdurability to this load supplying, it is to be intended to, by creator of the present invention, the big class that row overcomes and solves
Topic.
Summary of the invention
One purpose of the present invention is to provide a kind of power supply supply converting system, to overcome problem of the prior art.Therefore
This power supply supply converting system of the present invention receives an external power source, and is powered a load.This power supply supply is changed
System comprises at least one main power source device, at least one auxiliary power unit, a main switch, an auxiliary switch and one and controls single
Unit.This main switch is connected between this external power source and this main power source device.This auxiliary switch is connected to this auxiliary power unit
And between this load.Wherein, when this control unit detects this external power source normal power supply, this control unit turns on this master and opens
Close so that this main power source device receives this external power source, and changes this external power source to this load supplying；When this control unit
When the abnormal power supply of this external power source being detected, this control unit is ended this main switch and is supplied this load to turn off this external power source
Electricity, and switch this auxiliary power unit to this load supplying；Normal power supply is recovered when this control unit detects this external power source
Time, this control unit turns on this main switch with this external power source of involution, and maintains this auxiliary power unit jointly to this load
Power supply；Wherein, this control unit controls the output voltage output voltage more than this auxiliary power unit of this main power source device；When
When this control unit detects this main power source device completely to this load supplying, this control unit turns off this auxiliary power unit to this
Load supplying.
Another object of the present invention is to provide the control method of a kind of power supply supply converting system, to overcome prior art
Problem.Therefore this power supply supply converting system of the present invention receives an external power source, and to a load supplying, wherein, should
Power supply supply converting system comprises at least one main power source device, at least one auxiliary power unit and a control unit.This control
First method comprises the steps of, and when this control unit detects this external power source normal power supply, this main power source device receives
This external power source, and change this external power source to this load supplying；Then, detect that this external power source is different when this control unit
When often powering, this control unit turns off this external power source to this load supplying, and switches this auxiliary power unit to this load
Power supply；Then, when this control unit detects this external power source recovery normal power supply, this this external power source of control unit involution,
And maintain this auxiliary power unit jointly to this load supplying；Wherein, this control unit controls the output of this main power source device
Voltage is more than the output voltage of this auxiliary power unit；Finally, completely this is born when this control unit detects this main power source device
When carrying power supply, this control unit turns off this auxiliary power unit to this load supplying.
In order to be able to be further understood that technology, means and effect that the present invention is taked by reaching predetermined purpose, refer to
Below in connection with detailed description of the invention and accompanying drawing, it is believed that the purpose of the present invention, feature and feature, when can thus one deeply and
Concrete understanding, but institute's accompanying drawings only provides reference and explanation use, is not used for the present invention person of being any limitation as.
Accompanying drawing explanation
Fig. 1 is the block schematic diagram of power supply of the present invention supply converting system first embodiment；
Fig. 2 is the block schematic diagram of power supply of the present invention supply converting system the second embodiment；
Fig. 3 is the sequential chart that power supply of the present invention supply converting system controls；
Fig. 4 is the block schematic diagram of power supply of the present invention supply converting system the 3rd embodiment；
Fig. 5 is the block schematic diagram of power supply of the present invention supply converting system the 4th embodiment；And
Fig. 6 is the flow chart of power supply of the present invention supply converting system control method.
Wherein, description of reference numerals is as follows:
The present invention
Vin external power source
Ld loads
10 power supply supply converting systems
102 main power source devices
104 auxiliary power units
106 main switches
108 auxiliary switches
110 control units
1102 load sensors
1104 load signal amplifiers
1106 signal of communication generators
1108 reference voltage signal generators
1110 operation voltage generator
1022 input filter rectification circuits
1024 DC/DC conversion circuit
1026 output filter rectifiers
1042 charging circuits
1044 rechargeable batteries
1046 discharge circuits
Smc main switch control signal
Sac auxiliary switch control signal
Pd power detection signal
Vom main power source device output voltage
Voa auxiliary power unit output voltage
Iom main power source device output electric current
Ioa auxiliary power unit output electric current
Sod load signal
Signal is amplified in Soda load
Scm signal of communication
Srv reference voltage signal
Sdv operates voltage signal
10 ' power supply supply converting systems
102 ' first main power source devices
104 ' first auxiliary power units
106 ' main switches
108 ' auxiliary switches
110 ' first control units
102 " the second main power source device
104 " the second auxiliary power unit
110 " the second control unit
Smc ' main switch control signal
Sac ' auxiliary switch control signal
Vom1 the first main power source device output voltage
Voa1 the first auxiliary power unit output voltage
Vom2 the second main power source device output voltage
T1～T10 time point
V1 the first magnitude of voltage
V2 the second magnitude of voltage
V3 third voltage value
Voa2 the second auxiliary power unit output voltage
S10～S40 step
Detailed description of the invention
The technical content and a detailed description the most for the present invention, coordinate graphic being described as follows:
Refer to the block schematic diagram that Fig. 1 is power supply of the present invention supply converting system first embodiment.This power supply supply turns
Change system 10 and receive an external power source Vin, and a load Ld is powered.This power supply supply converting system 10 comprises at least
One main power source device 102, an at least auxiliary power unit 104, main switch 106, auxiliary switch 108 and at least controls
Unit 110.This main switch 106 is connected between this external power source Vin and this at least one main power source device 102.This auxiliary switch
108 are connected between this at least one auxiliary power unit 104 and this load Ld.Wherein, this main switch 106 or this auxiliary switch
108 is breaker, but is not limited, and this main switch 106 or this auxiliary switch 108 also can be power switch or other similar changes
The embodiment changed, all should be contained in scope of the invention.This control unit 110 connects this main power source device 102 and this auxiliary
Supply unit 104, whether this control unit 110 receives power detection signal Pd to detect this external power source Vin and to power just is
Normal or abnormal.Additionally, this external power source Vin is an AC power (AC power source) or a dc source (DC power
Source), but be not limited.Only, for convenience of description, in the present invention, as a example by this external power source Vin is this AC power
It is illustrated.
When this control unit 110 detects this external power source Vin normal power supply, this control unit 110 exports a master and opens
Closing control signal Smc and turn on this main switch 106, wherein, this main switch control signal Smc can be that high level signal is to turn on this master
Switch 106, but be not limited, therefore so that this main power source device 102 receives this external power source Vin, and changes outside this
This load Ld is powered by power supply Vin.Now, also to export auxiliary switch control signal Sac auxiliary to end this for this control unit 110
Help switch 108, wherein, this auxiliary switch control signal Sac can be low level signal to end this auxiliary switch 108, but not with
This is limited.In other words, when this control unit 110 detects this external power source Vin normal power supply, this control unit 110 exports
This main switch control signal Smc, and change needed for this external power source Vin is this load Ld by this main power source device 102
Voltage level.
When this control unit 110 detects the abnormal power supply of this external power source Vin, this control unit 110 exports this master and opens
Closing control signal Smc and end this main switch 106, wherein, this main switch control signal Smc can be that low level signal is to end this master
Switch 106, but is not limited, and powers this load Ld turning off this external power source Vin, and this control unit 110 is the most defeated
Going out this auxiliary switch control signal Sac to turn on this auxiliary switch 108, wherein this auxiliary switch control signal Sac can be high electricity
Ordinary mail number is to turn on this auxiliary switch 108, but is not limited, and powers this load Ld switching this auxiliary power unit 104.
Wherein, the abnormal power supply of above-mentioned this external power source Vin mean this external power source Vin because of fault, maintenance or other cannot provide normal
The operating conditions of power supply.
When this control unit 110 detects this external power source Vac recovery normal power supply, this control unit 110 exports again
This main switch control signal Smc of high level is to turn on this main switch 106, and then involution this external power source Vin, and maintenance should
This load Ld is powered by auxiliary power unit 104 jointly.Now, this main switch 106 and this auxiliary switch 108 are simultaneously for conducting shape
State.In this operating state, this control unit 110 controls the output voltage Vom of this main power source device 102 more than this accessory power supply
The output voltage Voa of device 104 so that this load Ld is jointly powered by this main power source device 102 with this auxiliary power unit 104
Situation under, this load Ld is provided the ratio of output energy to be gradually increasing by this main power source device 102, and this auxiliary power unit
104 couples of this load Ld provide the ratio of output energy to be gradually reduced, that is, the output electric current Iom of this main power source device 102 is gradually
Increase, and the output electric current Ioa of this auxiliary power unit 104 gradually decreases.Finally, this main electricity is detected when this control unit 110
When this load Ld is powered by source apparatus 102 completely, this auxiliary switch control signal of this control unit 110 output low level again
Sac is to end this auxiliary switch 108, and then turns off this auxiliary power unit 104 and power this load Ld.
Refer to the block schematic diagram that Fig. 2 is power supply of the present invention supply converting system the second embodiment.This second embodiment
The difference maximum with above-mentioned first embodiment is that this power supply supply converting system 10 ' has many group main power source devices, auxiliary electricity
Source apparatus and control unit.For convenience of explanation, in the present embodiment with two groups of main power source devices, auxiliary power unit and
As a example by control unit, that is, this power supply supply converting system 10 ' comprises one first main power source device 102 ', 1 first auxiliary electricity
Source apparatus 104 ', one first control unit 110 ', one second main power source device 102 ", one second auxiliary power unit 104 ", one
Second control unit 110 ", a main switch 106 ' and an auxiliary switch 108 '.It is worth mentioning, for many groups of the second embodiment
Framework, each control unit forms one group of framework with a main power source device and an auxiliary power unit, that is, this first control
Unit 110 ' this first main power source device 102 ' of arranging in pairs or groups operates with this first auxiliary power unit 104 '；And this second control unit
110 " arrange in pairs or groups this second main power source device 102 " with this second auxiliary power unit 104 " operation.As for this main switch 106 ' with should
Auxiliary switch 108 ' can be produced main switch control signal Smc by this first control unit 110 ' ' control with an auxiliary switch
Signal Sac ' controls, or, this main switch control signal Smc ' with this auxiliary switch control signal Sac ' second can be controlled by this
Unit 110 " produced to control this main switch 106 ' and this auxiliary switch 108 '.By this power supply supply converting system 10 '
Many group framework operations, can provide more multi output energy to improve power supply stability (stability) and reliability to this load Ld
(reliability)。
This power supply supply converting system 10 ' operation as this many groups framework is similar to above-mentioned first embodiment, for convenience
Illustrate, be illustrated as a example by this first control unit 110 ' is as main logic unit.Only, this second control unit 110 " also may be used
Identical operation is provided, therefore, is not that main logic unit is as restriction with this first control unit 110 '.When this detects that this is outer
During portion's power supply Vin normal power supply, this main switch control signal Smc of output high level ' to turn on this main switch 106 ', therefore,
This external power source Vin is simultaneously by this first main power source device 102 ' and this second main power source device 102 " change with to this load
Ld powers.In other words, in this operating state, this first main power source device 102 ' and this second main power source device 102 " it is in parallel
Connect and this load Ld is powered.
When this first control unit 110 ' detects the abnormal power supply of this external power source Vin, this first control unit 110 '
Export this main switch control signal Smc ' end this main switch 106 ', this load Ld is powered turning off this external power source Vin, and
And this first control unit 110 ' also exports this auxiliary switch control signal Sac of high level ' to turn on this auxiliary switch 108 ',
Therefore, this first auxiliary power unit 104 ' and this second auxiliary power unit 104 " this load Ld is powered simultaneously.In other words,
In this operating state, this first auxiliary power unit 104 ' and this second auxiliary power unit 104 " for being connected in parallel, this is born
Carry Ld to power.
When this first control unit 110 ' detects this external power source Vin recovery normal power supply, this first control unit
110 ' these main switch control signals Smc again exporting high level ' to turn on this main switch 106 ', and then this external power source of involution
Vin, and maintain this first auxiliary power unit 104 ' and this second auxiliary power unit 104 " jointly this load Ld is powered.
Now, this main switch 106 ' is conducting state with this auxiliary switch 108 ' simultaneously.In this operating state, this first control unit
110 ' the output voltage Vom1 output electricity more than this first auxiliary power unit 104 ' controlling this first main power source device 102 '
Pressure Voa ', and control this second main power source device 102 " output voltage Vom2 more than this second auxiliary power unit 104 "
Output voltage Voa " so that this first main power source device 102 ' and this first auxiliary power unit 104 ' and this second main power source
Device 102 " with this second auxiliary power unit 104 " under the situation jointly this load Ld powered, this first main power source device
102 ' with this second main power source device 102 " to this load Ld provide output energy ratio be gradually increasing, and this first auxiliary electricity
Source apparatus 104 ' and this second auxiliary power unit 104 " provide the ratio of output energy to be gradually reduced this load Ld, that is,
The output electric current Iom1 of this first main power source device 102 ' and this second main power source device 102 " output electric current Iom2 gradually increase
Add, and the output electric current Ioa1 of this first auxiliary power unit 104 ' and this second auxiliary power unit 104 " output electric current
Ioa2 gradually decreases.Finally, this first main power source device 102 ' and this second main power source are detected when this first control unit 110 '
Device 102 " when completely powering this load Ld, this auxiliary switch of this first control unit 110 ' output low level again controls
Signal Sac ' is to end this auxiliary switch 108 ', and then turns off this first auxiliary power unit 104 ' and this second accessory power supply dress
Put 104 " this load Ld is powered.
Referring to Fig. 3 is the sequential chart that power supply of the present invention supply converting system controls.Converting system is supplied for this power supply
SECO explanation as a example by one group of this main power source device 102, this auxiliary power unit 104 and this control unit 110.Such as figure
Shown in, waveform from top to bottom represents this outer power voltage state Vin, this outer power voltage state I in, this load respectively
Current status Id, this auxiliary power unit current status Ioa, this main power source device current status Iom, this load voltage state
Vd, this auxiliary power unit voltage status Voa, this main power source device voltage status Vom.It is worth mentioning, ripple represented on figure
Shape figure is only the electric state of those devices, in order to illustrate the mode of operation of those devices, non-be actual electrical parameters big
Little.
Coordinate and see Fig. 1, before first time point T1, when this control unit 110 detects that this external power source Vin is normal
During power supply, this control unit 110 turns on this main switch 106 so that this main power source device 102 receives this external power source Vin, and
Change this external power source Vin this load Ld is powered.In other words, when this external power source Vin normal power supply, this power supply supply turns
Change system 10 and provided, by this main power source device 102, responsibility of mainly powering, and this auxiliary power unit 104 is standby redundant state.
When first time point T1, this control unit 110 detects the abnormal power supply of this external power source Vin, and the cut-off of this control unit 110 should
Main switch 106, powers to this load Ld turning off this external power source Vin, and switches this auxiliary power unit 104 to this load
Ld powers.In other words, when the abnormal power supply of this external power source Vin, responsibility of mainly powering then played the part of by this auxiliary power unit 104,
This main power source device 102 then cannot reoffer system load, now, this external power source Vin can be overhauled or be updated.
When assuming this second time point T2, this control unit 110 detects this external power source Vin and recovers normal power supply, this control
Unit 110 processed turns on this main switch 106 so that this main power source device 102 receives this external power source Vin.At the 3rd time point
During T3, this main power source device 102 completes Voltage Establishment and provides output voltage to power this load Ld.It is worth mentioning, now,
This load Ld is jointly powered by this main power source device 102 with this auxiliary power unit 104.
When the 4th time point T4, this control unit 110 controls the output voltage Vom of this main power source device 102 more than being somebody's turn to do
The output voltage Voa of auxiliary power unit 104, in other words, when the 4th time point T4, the output electricity of this main power source device 102
It is third voltage value V3 that pressure Vom size is drawn high by one first magnitude of voltage V1, and the output voltage of this auxiliary power unit 104
Voa size is then maintained one second magnitude of voltage V2, wherein, V3 > V2.Owing to the output voltage Vom of this main power source device 102 is more than
The output voltage Voa of this auxiliary power unit 104 so that this main power source device 102 is common to this with this auxiliary power unit 104
Under the situation that load Ld powers, this load Ld is provided the ratio of output energy to be gradually increasing by this main power source device 102, and this is auxiliary
Help supply unit 104 that this load Ld provides the ratio of output energy be gradually reduced, that is, it is assumed that maintain and this load Ld is provided
Total system load when being definite value, the output electric current Iom of this main power source device 102 is gradually increased so that provide this load Ld's
System load is gradually increased；And the output electric current Ioa of this auxiliary power unit 104 gradually decreases so that provide this load Ld's
System load gradually decreases.It is this main power source device 102 and this auxiliary as schemed upper 4th time point T4 to the tenth time point T10
Under the situation that this load Ld is powered by supply unit 104 jointly, the output electric current Iom of this main power source device 102 is gradually increased, and
The schematic diagram that the output electric current Ioa of this auxiliary power unit 104 gradually decreases.
Finally, when the 4th time point T10, when this control unit 110 detects this main power source device 102 completely to this load
When Ld powers, this control unit 110 is to turn off this auxiliary power unit 104 to power this load Ld.
Being worth mentioning, the control strategy of this power supply of present invention supply converting system has a following feature:
One, by extending this main power source device 102 and time this load Ld is powered by this auxiliary power unit 104 jointly
Between, such as the 4th time point T4 to the tenth time point T10 in above-described embodiment, i.e. can be described as (energy between Conversion region
Transformation area), say, that between Conversion region, the output current capacity of this main power source device 102
Gradually promote so that this main power source device 102 provides the system load ratio of this load Ld (compared to this auxiliary power unit
104) it is gradually increased, to realize the soft conversion (soft of power supply between this main power source device 102 and this auxiliary power unit 104
Transformation) or claim smooth conversion (smooth transformation), so, can be to overcome when this external power source
When Vin recovers normal power supply, owing to directly switching this main power source device 102, this load Ld is powered, and this auxiliary of instantaneous trip
Transient state produced by supply unit 104 is surged electric current (inrush current), and causes input power to produce voltage dip
(voltage dip), causes system to work as machine (shut down) and must to turn back on caused spring (re-bounce) different
Often, furthermore, even cause the infringement to system service life.
Two, by the way of linear time-varying (linear and time-varying control), control this main power source dress
Put 102 and gradually promote output current capacity, and be gradually lowered this auxiliary power unit 104 and export current capacity, in other words, should
The output current capacity of main power source device 102 can be incremented by by fixing percentage, such as from the 4th time point T4 be 0% gradually
Increasing to the tenth time point T10 is 100%, that is, each time interval, this main power source device 102 is fixing be incremented by 14.29% defeated
Go out current capacity, to complete the smooth conversion of power supply between this main power source device 102 and this auxiliary power unit 104.Certainly, on
State time interval non-limiting 4th time point T4 to the tenth time point T10, can be according to being actually needed this main power source device 102 of prolongation
And between the Conversion region that this auxiliary power unit 104 is powered jointly, to reach to smooth completely the power supply conversion of (soft), as
This, can improve the obdurability (robustness) powering this load Ld.
Refer to the block schematic diagram that Fig. 4 is power supply of the present invention supply converting system the 3rd embodiment.It is worth mentioning, Fig. 4
Described content is for operating in this main power source device 102 and this auxiliary power unit 104 when this power supply supply converting system 10
Between the Conversion region of common power supply, that is, this main switch 106 is conducting state with this auxiliary switch 108, marks the most especially
Illustrate.In this embodiment, this control unit 110 be comprise load sensor 1102, load signal amplifier 1104,
One signal of communication generator 1106, reference voltage signal generator 1108 and an operation voltage generator 1110.Should
Load sensor 1102 connects this load Ld in order to detect this load Ld situation, and specifically, this load sensor 1102 can be examined
Survey the total system load size needed for this load Ld, and export a load signal Sod, then by this load signal amplifier
This load signal Sod is amplified by 1104, and exports a load amplification signal Soda.This signal of communication generator 1106 connects should
Auxiliary power unit 104 in order to be responsible for this main power source device 102 and this auxiliary power unit 104 communication work between the two,
Specifically, this signal of communication generator 1106 is responsible for when this main power source device 102 is common to this with this auxiliary power unit 104
When load Ld powers, this load Ld is provided to the communication work of system load ratio adjustment, to guarantee to smooth (soft) completely
Power supply conversion.Wherein, this signal of communication generator 1106 detects the power supply situation of this auxiliary power unit 104, and exports one
Signal of communication Scm.This reference voltage signal generator 1108 connects this auxiliary power unit 104, in order to detect this accessory power supply
Device 104, and export a reference voltage signal Srv, to control this main power source device 102 output voltage more than this accessory power supply
Device 104 output voltage.This operation voltage generator 1110 connects this load signal amplifier 1104, this signal of communication produces
Raw device 1106 and this reference voltage signal generator 1108, and receive this load amplification signal Soda, this communication letter respectively
Number Scm and this reference voltage signal Srv.This operation voltage generator 1110 takes according to this load signal amplifier 1104
Obtain the total system load size of this load Ld, and obtain the power supply shape of this auxiliary power unit 104 according to this signal of communication Scm
Condition, obtains the output voltage size of this auxiliary power unit 104, therefore, output one operation further according to this reference voltage signal Srv
Voltage signal Sdv, to control the output voltage of this main power source device 102 so that this main power source device 102 fills with this accessory power supply
Put under 104 situations jointly this load Ld powered, this main power source device 102 this load Ld is provided the ratio of output energy by
Gradually rise, and this load Ld is provided the ratio of output energy to be gradually reduced, to reach to smooth completely by this auxiliary power unit 104
The power supply conversion of (soft).
Refer to the block schematic diagram that Fig. 5 is power supply of the present invention supply converting system the 4th embodiment.As it is shown in figure 5, should
Main power source device 102 comprises an input filter rectification circuit 1022, one direct current/DC converting circuit 1024 and an output filtering
Rectification circuit 1026.This auxiliary power unit 104 comprises charging circuit 1042, rechargeable battery 1044 and a discharge circuit
1046.When this main switch 106 turns on, this input filter rectification circuit 1022 receives this external power source Vin, and to outside this
Power supply Vin is filtered and rectification.This DC/DC conversion circuit 1024 then receives the DC voltage after this filtering and rectification,
And this DC voltage is carried out the control of voltage level, then is filtered and rectification by this output filter rectifier 1026
After, it is provided that the voltage level needed for this load Ld is powered.
In the present embodiment, this auxiliary power unit 104 is made up of with its charge-discharge circuit rechargeable battery.Outside this
During power supply Vin normal power supply, this main power source device 102 receives this external power source Vin, and changes this external power source Vin to this
Load Ld powers.Additionally, this external power source Vin further provides for this auxiliary power unit 104, right by this charging circuit 1042
This rechargeable battery 1044 is charged, to realize the function of stand-by electric redundant.Once the abnormal power supply of this external power source Vin,
Responsibility of mainly powering then played the part of by this auxiliary power unit 104, total system needed for being provided this load by this discharge circuit 1046
Load, to guarantee that this load Ld is routinely powered by this power supply supply converting system 10.
Refer to the flow chart that Fig. 6 is power supply of the present invention supply converting system control method.This power supply supply converting system
Receive an external power source, and to a load supplying, wherein, this power supply supply converting system comprise at least one main power source device,
At least one auxiliary power unit, a main switch, an auxiliary switch and a control unit.This main switch is connected to this external power source
And between this at least one main power source device.This auxiliary switch is connected between this at least one auxiliary power unit and this load.Should
Control unit connects this main power source device and this auxiliary power unit.First this control method comprises the steps of, when this control
When unit detects this external power source normal power supply, this control unit turns on this main switch so that this main power source device receives should
External power source, and change this external power source to this load supplying (S10).Then, this external electrical is detected when this control unit
During the abnormal power supply in source, this control unit ends this main switch, and to turn off this external power source to this load supplying, and it is auxiliary to turn on this
Help switch to switch this auxiliary power unit to this load supplying (S20).Wherein, the abnormal power supply of this external power source above-mentioned means this
External power source because of fault, maintenance or other operating conditions of normal power supply cannot be provided.
Then, when this control unit detects this external power source recovery normal power supply, this control unit turns on this main switch
With this external power source of involution, and maintain this auxiliary power unit jointly to this load supplying (S30).Now, this main switch with
This auxiliary switch is conducting state simultaneously.In this operating state, this control unit controls the output voltage of this main power source device
Output voltage more than this auxiliary power unit so that this main power source device and this auxiliary power unit are jointly to this load supplying
Situation under, this load is provided the ratio of output energy to be gradually increasing by this main power source device, and this auxiliary power unit is to this
Load provides the ratio of output energy to be gradually reduced, that is, the output electric current of this main power source device is gradually increased, and this auxiliary electricity
The output electric current of source apparatus gradually decreases.Finally, when this control unit detects this main power source device completely to this load supplying,
This control unit ends this auxiliary switch to turn off this auxiliary power unit to this load supplying (S40).
In sum, the present invention has following feature and an advantage:
1, operated by many groups framework of this power supply supply converting system 10, this load Ld can be provided more multi output energy
To improve power supply stability (stability) and reliability (reliability)；
2, by extending the time that this load Ld is jointly powered by this main power source device 102 with this auxiliary power unit 104,
In between Conversion region, the output current capacity of this main power source device 102 gradually promotes so that this main power source device 102 carries
System load ratio for this load Ld is gradually increased, to realize between this main power source device 102 and this auxiliary power unit 104
The soft conversion (soft transformation) of power supply or the smooth conversion (smooth transformation) of title, so,
This load Ld can be supplied owing to directly switching this main power source device 102 to overcome when this external power source Vin recovers normal power supply
Electricity, and transient state produced by this auxiliary power unit 104 of instantaneous trip is surged electric current, and it is rapid to cause input power to produce voltage
Fall, causes system to work as machine and must turn back on caused spring extremely, furthermore, even cause the damage to system service life
Evil；
3, by the way of linear time-varying, control this main power source device 102 gradually promote output current capacity, and gradually
Reduce this auxiliary power unit 104 and export current capacity, with complete this main power source device 102 and this auxiliary power unit 104 it
Between the smooth conversion of power supply, so, to reach to smooth completely the power supply conversion of (soft), and can improve this load Ld is supplied
The obdurability (robustness) of electricity；And
4, detecting this external power source Vin according to this control unit 110 is normal power supply or abnormal power supply so that this main power source
Power supply task changed by device 102 or this auxiliary power unit 104, to guarantee that this power supply supply converting system 10 is routinely to this
Load Ld powers.
Only, the above, the detailed description of preferred embodiment the most of the present invention is with graphic, and only inventive feature is also
Being not limited to this, and be not used to limit the present invention, all scopes of the present invention should be as the criterion with described claim, all together in this
The embodiment of the spirit of invention claim change similar with it, all should be contained in scope of the invention, any this area skill
Art personnel in the field of the invention, can think easily and change or modify all can contain in scope of the presently claimed invention.
Claims (18)
1. a power supply supply converting system, receives an external power source, and is powered a load；This power supply supply is changed
System comprises:
At least one main power source device；
At least one auxiliary power unit；
One main switch, is connected between this external power source and this main power source device；
One auxiliary switch, is connected between this auxiliary power unit and this load；
One control unit, connects this main power source device and this auxiliary power unit；And
Wherein, when this control unit detects this external power source normal power supply, this control unit turns on this main switch so that should
Main power source device receives this external power source, and changes this external power source to this load supplying；When this control unit detects this
During the abnormal power supply of external power source, this control unit ends this main switch to turn off this external power source to this load supplying, and cuts
Change this auxiliary power unit to this load supplying；When this control unit detects this external power source recovery normal power supply, this control
Unit turns on this main switch with this external power source of involution, and maintains this auxiliary power unit jointly to this load supplying；Wherein,
This control unit controls the output voltage output voltage more than this auxiliary power unit of this main power source device；When this control unit
When detecting this main power source device completely to this load supplying, this control unit turns off this auxiliary power unit to this load supplying.
2. power supply supply converting system as claimed in claim 1, wherein, this control unit controls the output of this main power source device
Voltage is more than the output voltage of this auxiliary power unit so that this main power source device and this auxiliary power unit are jointly to this load
Under the situation of power supply, this load is provided the ratio of output energy to be gradually increasing by this main power source device, and this auxiliary power unit
The ratio that this load provides output energy is gradually reduced.
3. power supply supply converting system as claimed in claim 2, wherein, when this main power source device is total to this auxiliary power unit
With being between a Conversion region to time of this load supplying, between this Conversion region in, this main power source device is to this load
The ratio providing output energy is gradually increasing so that main power source device provides the system load ratio of this load to be gradually increased.
4. power supply supply converting system as claimed in claim 3, wherein, between this Conversion region, this control unit controls
This load is provided the ratio of output energy to be incremented by by fixing percentage by this main power source device.
5. power supply supply converting system as claimed in claim 4, wherein, this control unit is divided into by between this Conversion region
Multiple time intervals, and control this main power source device at the incremental percentage that this load is provided output energy of each time interval
Ratio.
6. power supply supply converting system as claimed in claim 1, wherein, when this control unit, to detect this main power source device complete
During to this load supplying, this control unit turns off this auxiliary power unit to this load supplying so that, smoothly change softly
For this main power source device to this load supplying.
7. power supply supply converting system as claimed in claim 1, wherein, this main power source device comprises an input filter rectified current
Road, one direct current/DC converting circuit and an output filter rectifier；This auxiliary power unit comprise a charging circuit, one
Rechargeable battery and a discharge circuit.
8. power supply supply converting system as claimed in claim 1, wherein, this main switch or this auxiliary switch are breaker or merit
Rate switchs.
9. power supply supply converting system as claimed in claim 1, wherein, this external power source is an AC power or a direct current
Source.
10. a control method for power supply supply converting system, this power supply supply converting system receives an external power source, and right
One load supplying, wherein, this power supply supply converting system comprise at least one main power source device, at least one auxiliary power unit, one
Main switch, an auxiliary switch and a control unit, this main switch is connected between this external power source and this main power source device, should
Auxiliary switch is connected between this auxiliary power unit and this load；This control method comprises the steps of
A (), when this control unit detects this external power source normal power supply, this main power source device receives this external power source, and
Change this external power source to this load supplying；
B (), when this control unit detects the abnormal power supply of this external power source, this control unit turns off this external power source and bears this
Carry power supply, and switch this auxiliary power unit to this load supplying；
(c) when this control unit detect this external power source recover normal power supply time, this this external power source of control unit involution, and
Maintain this auxiliary power unit jointly to this load supplying；Wherein, this control unit controls the output voltage of this main power source device
Output voltage more than this auxiliary power unit；And
D (), when this control unit detects this main power source device completely to this load supplying, this control unit turns off this auxiliary electricity
Source apparatus is to this load supplying；
Wherein when this control unit detects this external power source normal power supply, this control unit turns on this main switch so that should
Main power source device receives this external power source, and changes this external power source to this load supplying；When this control unit detects this
During the abnormal power supply of external power source, this control unit ends this main switch to turn off this external power source to this load supplying, and cuts
Change this auxiliary power unit to this load supplying；When this control unit detects this external power source recovery normal power supply, this control
Unit turns on this main switch with this external power source of involution, and maintains this auxiliary power unit jointly to this load supplying；Wherein,
This control unit controls the output voltage output voltage more than this auxiliary power unit of this main power source device；When this control unit
When detecting this main power source device completely to this load supplying, this control unit turns off this auxiliary power unit to this load supplying.
11. power supply as claimed in claim 10 supply converting system control methods, wherein in step (c), this control unit
Control the output voltage output voltage more than this auxiliary power unit of this main power source device so that this main power source device is auxiliary with this
Helping supply unit jointly under the situation of this load supplying, this main power source device provides the ratio of output energy gradually to this load
Rise, and this load is provided the ratio of output energy to be gradually reduced by this auxiliary power unit.
12. power supply as claimed in claim 10 supply converting system control methods, wherein, this control unit controls this main power source
The output voltage of device is more than the output voltage of this auxiliary power unit so that this main power source device is with this auxiliary power unit altogether
With under the situation to this load supplying, this load is provided the ratio of output energy to be gradually increasing by this main power source device, and this is auxiliary
Help supply unit that this load provides the ratio of output energy be gradually reduced.
13. power supply as claimed in claim 12 supply converting system control methods, wherein, when this main power source device and this auxiliary
Supply unit time to this load supplying jointly is between a Conversion region, between this Conversion region in, this main power source fills
Put and this load provide the ratio of output energy be gradually increasing so that main power source device provide the system load ratio of this load by
Cumulative add.
14. power supply as claimed in claim 13 supply converting system control methods, wherein, between this Conversion region, this control
Unit processed controls this main power source device provides the ratio of output energy to be incremented by by fixing percentage to this load.
15. power supply as claimed in claim 14 supply converting system control methods, wherein, this energy is changed by this control unit
Interval is divided into multiple time interval, and it is incremental to this load offer output at each time interval to control this main power source device
The percentage of energy.
16. power supply as claimed in claim 10 supply converting system control methods, wherein, when this control unit detects this main electricity
When source apparatus is completely to this load supplying, this control unit turns off this auxiliary power unit to this load supplying so that softly,
Smoothly be converted to this main power source device to this load supplying.
17. power supply as claimed in claim 10 supply converting system control methods, wherein, this main power source device comprises an input
Filter rectifier, one direct current/DC converting circuit and an output filter rectifier；This auxiliary power unit comprises and fills
Electricity circuit, a rechargeable battery and a discharge circuit.
18. power supply as claimed in claim 10 supply converting system control methods, wherein, this main switch or this auxiliary switch are
Breaker or power switch.
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| US9800051B2 (en) * | 2015-09-03 | 2017-10-24 | Ensync, Inc. | Method and apparatus for controlling energy flow between dissimilar energy storage devices |
| CN106950841B (en) * | 2017-05-12 | 2019-10-25 | 山东大学 | The PD-SMC bionic eye motion control method unrelated with model |
| CN107204710B (en) * | 2017-05-27 | 2018-06-08 | 西安拓锋机电科技有限公司 | Multifunctional power module, more power adapters and polymorphic type impulse generator |
| CN109980709B (en) * | 2017-12-28 | 2023-03-24 | 台达电子工业股份有限公司 | Charging power supply system with low standby power consumption and control method thereof |
| CN108134448B (en) * | 2017-12-29 | 2020-08-21 | 中国联合网络通信集团有限公司 | Power supply management and control method and management and control system |
| CN110198076A (en) * | 2019-05-27 | 2019-09-03 | 国网河北省电力有限公司邢台供电分公司 | Automatic power-supply switch |
| CN111009958B (en) * | 2019-12-13 | 2021-04-27 | 漳州科华技术有限责任公司 | Power supply control circuit |
| US20210242057A1 (en) * | 2020-01-30 | 2021-08-05 | Taiwan Semiconductor Manufacturing Co., Ltd. | Automated material handling systems |
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