CN103944420B - Power system and its control method - Google Patents
Power system and its control method Download PDFInfo
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- CN103944420B CN103944420B CN201310019844.6A CN201310019844A CN103944420B CN 103944420 B CN103944420 B CN 103944420B CN 201310019844 A CN201310019844 A CN 201310019844A CN 103944420 B CN103944420 B CN 103944420B
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Abstract
The invention discloses a kind of power system and its control method，This system comprises hot-swappable multiple power modules，The positive output end of each power module and negative output terminal each electrically connect a switch，When arbitrary power module is inserted in hot plug mode and is connected in parallel with other power modules in power system，Whether there are phase contrast or voltage difference between all power supplys that first all power modules in foundation power system are electrically connected，Accordingly to control the switch motion electrically connecting in each power module with negative output terminal，Continue and whether be more than the output voltage of the power module of running in power system according to the output voltage of the power module being inserted in hot plug mode in power system，To control, the switch motion electrically connect with positive output end in the power module in power system is inserted in hot plug mode.
Description
Technical field
With regard to a kind of power system, espespecially a kind of have hot-swappable and for being connected in parallel multiple power supplys to the present invention
Module, and can prevent power module from producing power system and its control of return flow path and electric current of surging in hot plug
Method.
Background technology
In order to solve the problems, such as the harmonic current of the power system for carrying out electric energy conversion in electronic equipment, power
Factor correcting method (Power Factor Correction, PFC) is to use one of method the widest now, therefore most electricity
The power system of sub- equipment is made up of a power module with power factor emendation function, and this power module comprises one
Circuit of power factor correction, therefore the electric energy that electronic equipment received can be made, the electric current of the alternating current that such as civil power is provided divides
Cloth will not excessively be concentrated, and the harmonic wave of generation is less, and reduces electric energy unnecessary loss in the electronic device.
And the power grade with electronic equipment improves constantly and the demand of redundant function, more utilize at present at least
Power module more than two is connected in parallel constituting power system, the outfan of wherein the plurality of power module, and electricity
Connect the main circuit to electronic equipment, consequently, it is possible to just can ensure that electronic equipment can obtain the electric power of abundance to be transported
Make.What is more, in order that arbitrary power module can be when electronic equipment operates, the action substituted sets without making electronics
Standby and power system is shut down, and multiple power modules all hot-swappable (hot swappable) of power system are in electricity
In source supplying system.
But multiple power modules are when being connected in parallel in power system in hot plug mode at present, it will meet with
To two main problems, a problem therein is when being respectively supplied to multiple power module electric energy by multiple power supplys, if
Phase place between multiple power supplys is different or multiple power supply between there is voltage difference, arbitrary power module will be led in hot plug mode
During insertion power system, the output current that the other power modules operating in power system are exported will flow
Enter and just this power module in power system is inserted with hot plug, that is, in just power system being inserted in hot plug
Unexpected return flow path is produced in interior this power module, consequently, it is possible to by the electromagnetic interface filter reducing this power module
Filter effect, and make the current potential exporting lateral capacitance within this power module have the too high situation generation of preliminary filling.
And another problem be then when arbitrary power module power system is inserted in hot plug mode and with operate
Power module when being connected in parallel, due to just inserting the output in this power module of power system in hot plug mode
Voltage in lateral capacitance is still zero in the moment that power module inserts, and leads to the power module operating in power system
The output lateral capacitance aligning this power module being inserted in power system is charged by the voltage being exported, and just leads to
The output lateral capacitance inserting the power module of power system in hot plug mode can produce great dv/dt change, and then
This output lateral capacitance is made to produce electric current (inrush current) of surging, consequently, it is possible to this power module may be because of electricity of surging
Flow and damage.
Although in order to avoid above-mentioned disappearance, having the power system of part to design at present and further include an isolation transformation
Device, this isolating transformer has multiple armature windings and secondary windings, each of which armature winding and corresponding power supply mould
The outfan electrical connection of block, is then electrically connected to the main circuit of electronic equipment as secondary windings, consequently, it is possible to isolating transformer
Just multiple power modules can be isolated, and then avoid arbitrary power module to produce when inserting power system in hot plug mode
Raw unexpected return flow path and electric current of surging, the volume yet with isolating transformer is larger, will lead to power supply supply system
The volume of system cannot reduce, further, since power system is additionally provided with isolating transformer to transmit electric energy, therefore isolates
Transformator will make power system produce unnecessary loss when transmitting electric energy, leads to the efficiency of power system to drop
Low.
Therefore, a kind of power system improving above-mentioned prior art disappearance and its control method how are developed, real
The problem in the urgent need to address at present for those skilled in the art.
Content of the invention
Present invention is primarily targeted at providing a kind of power system and its control method, it by power supply supply is
System comprises hot-swappable and for being connected in parallel multiple power modules, and each power module has more two switches, therein
One switch is electrically connected with the positive output end of power module, and another switch is then electrically connected with the negative output terminal of power module, and such one
Come, just can correspond to, according to the condition that tool sets, the action controlling two switches in each power module, to solve existing power supply
Supply system arbitrary power module insert power system in hot plug mode and with power system in operate
Power module when being connected in parallel, the power module operating in power system will be so that be just inserted in hot plug mode
Enter the power module in power system and produce the disappearance such as not expected return flow path and electric current of surging.
For reaching above-mentioned purpose, a broader embodiment of the present invention, for providing a kind of power system, comprises：First
Power module, hot plug is in power system, and the electric energy of conversion the first power supply, with negative defeated in the first positive output end and first
Go out and export first voltage between end, and comprise the first power factor correction circuit, first switch and second switch, the first power factor correction circuit
Output first voltage, first switch electrically connects between the first power factor correction circuit and the first positive output end, and second switch electrically connects
Between the first power factor correction circuit and the first negative output terminal, and electrically connect with earth terminal；And second source module, hot plug
In power system, and change the electric energy of second source, with the second positive output end electrically connecting with the first positive output end and
Export second voltage between the second negative output terminal electrically connecting with the first negative output terminal, and comprise the second power factor correction circuit, the
Three switches and the 4th switch, the wherein second power factor correction circuit output second voltage, the 3rd switch is electrically connected to the second work(because of school
Between positive circuit and the second positive output end, the 4th switch is electrically connected between the second power factor correction circuit and the second negative output terminal；Wherein,
First power supply and second source are electrically connected to each other with a centrage, and when the first power module operates in power system
And second source modular splicing hot plug in power system when, the first power module and second source module are first controlled respectively
Second switch processed and the 4th phase contrast only between the first power supply second source for the switch or voltage difference are less than conducting during a setting value,
This second source modular splicing controls the 3rd to switch conducting when second voltage is more than first voltage.
For reaching above-mentioned purpose, another broader embodiment of the present invention is for providing a kind of controlling party of power system
Method, wherein power system comprise the first hot-swappable power module and second source module, and the first power module turns
Change the electric energy of the first power supply, between the first positive output end and the first negative output terminal export first voltage, and comprise the first work(because
Correcting circuit, first switch and second switch, the first power factor correction circuit output first voltage, first switch is electrically connected to first
Between power factor correction circuit and the first positive output end, second switch is electrically connected to the first power factor correction circuit and the first negative output terminal
Between, and electrically connect with earth terminal, second source module system changes the electric energy of second source, with being electrically connected with the first positive output end
Export second voltage between the second positive output end connecing and the second negative output terminal electrically connecting with the first negative output terminal, and comprise the
Two power factor correction circuits, the 3rd switch and the 4th switch, the wherein second power factor correction circuit output second voltage, the 3rd switch electricity
It is connected between the second power factor correction circuit and the second positive output end, the 4th switch is electrically connected to the second power factor correction circuit and second
Between negative output terminal, and the first power supply and second source are electrically connected to each other with centrage, and control method comprises the steps of：(a)
When the first power module operates in power system, and second source modular splicing hot plug is in power system
When, the first power module and second source module first judge whether are phase contrast between the first power supply and this second source or voltage difference
Less than a setting value；(b) when judged result is to be, the first power module and second source module control respectively second switch and
4th switch conduction；C () second source modular splicing differentiates whether second voltage is more than this first voltage；And (d) is when sentencing
When disconnected result is to be, second source module controls the 3rd switch conduction.
Brief description
Fig. 1：It is arranged in an electronic equipment for the power system of present pre-ferred embodiments, and and electronic equipment
Electrical block diagram when an interior main circuit electrically connects.
Fig. 2-Fig. 4：It is the various possible embodiments to either switch in the 4th switch for the first switch shown in Fig. 1
Structural representation.
Fig. 5：It is a change case of the power system shown in Fig. 1.
Fig. 6：It is the schematic flow sheet of the control method of power system shown in Fig. 1.
Wherein, description of reference numerals is as follows：
1：Power system
10：First power module
100：First power factor correction circuit
101：First control unit
102：First testing circuit
103：First comparison circuit
104：First rectification circuit
105：First current balance circuit
11：Second source module
110：Second power factor correction circuit
111：Second control unit
112：Second testing circuit
113：Second comparison circuit
114：First rectification circuit
115：Second current balance circuit
20：First power supply
21：Second source
9：Electronic equipment
90：Main circuit
91：DC/DC conversion circuit
Vo：Main output voltage
V1：First voltage
V2：Second voltage
Io：Main output current
Cbus：Bus capacitance
C1：First output lateral capacitance
C2：Second output lateral capacitance
T1：First positive output end
T2：First negative output terminal
T3：Second positive output end
T4：Second negative output terminal
G：Earth terminal
Ln：Centrage
SW1～SW4：First switch～4th switchs
S1～S6：The rate-determining steps of power system
Specific embodiment
Embody feature of present invention to describe in detail in the explanation of back segment with some exemplary embodiments of advantage.It should be understood that
It is that the present invention can have various changes in different modes, it neither departs from the scope of the present invention, and explanation therein
And diagram is illustrated as being used in itself, and nand architecture is in the restriction present invention.
Refer to Fig. 1, its be present pre-ferred embodiments power system be arranged in an electronic equipment, and with electricity
An electrical block diagram when main circuit in sub- equipment electrically connects.As shown in figure 1, the power system of the present embodiment
1 is arranged in an electronic equipment 9, and electrically connects with the main circuit 90 in electronic equipment 9, and power system 1 is in order to defeated
Go out for galvanic one main output voltage VoAnd main output current IoTo main circuit 90, to drive main circuit 90
Running, wherein in some embodiments, main circuit 90 can be but not limit and comprise a bus capacitance CbusAnd a DC-DC
Change-over circuit 91.Bus capacitance CbusIt is connected across the input of main circuit 90, in order to main output voltage VoFiltering, direct current/
DC converting circuit 91 then with bus current CbusElectrical connection, in order to by filtered main output voltage VoBe converted to another electricity
The direct current energy (not shown) of voltage level.
Power system 1 comprises hot-swappable and for being connected in parallel multiple power modules, and each power module divides
Not powered by different power supplys, below only one first power module and a second source will be comprised with power system 1
Module exemplarily to illustrate the technology of the present invention.Referring again to Fig. 1, in the present embodiment, power system 1 comprises one
One power module 10 and a second source module 11, the wherein first power module 10 hot-swappable in power system 1,
And first the input of power module 10 electrically connect with one first power supply 20, the first power module 10 is in order to by the first power supply 20 institute
The electric energy providing is changed, to export first voltage V1, and the first power module 10 further includes one first positive output end T1, one
First negative output terminal T2, one first power factor correction circuit 100, first switch SW1And a second switch SW2.First positive output
End T1With the first negative output terminal T2Electrically connect with the input of main circuit 90, make the first power module 10 can be just defeated via first
Go out to hold T1With the first negative output terminal T2By first voltage V1It is sent to main circuit 90.First power factor correction circuit 100 is then in order to enter
Row PFC, and the electric energy that the first power supply 20 is provided can be changed, to export first voltage V1.First switch SW1String
Connection is connected to the first power factor correction circuit 100 and the first positive output end T1Between.Second switch SW2Then it is connected in series in first
Power factor correction circuit 100 and the first negative output terminal T2Between, and second switch SW2One end and the first negative output terminal T2With one
Earth terminal G electrically connects.
As for second source module 11 equally hot-swappable in power system 1, and second source module 11 is defeated
Enter end to electrically connect with a second source 21, second source module 11 is changed in order to the electric energy being provided second source 21,
To export second voltage V2, and second source 21 further includes one second positive output end T3, one second negative output terminal T4, one second work(
Factor correction circuit 110, one the 3rd switchs SW3And one the 4th switch SW4.Second positive output end T3With the second negative output terminal T4With
The input electrical connection of main circuit 90, makes the second source module 11 can be via the second positive output end T3With the second negative output terminal T4
By second voltage V2It is sent to main circuit 90, additionally, the second positive output end T3More with the first positive output end T1Electrical connection, second
Negative output terminal T4Then with the first negative output terminal T2Electrical connection is so that the output of the first power module 10 and second source module 11
Side is to be connected in parallel.Second power factor correction circuit 110 is in order to carrying out PFC, and can be provided second source 21
Electric energy is changed, to export second voltage V2.3rd switch SW3It is connected in series in the second power factor correction circuit 110 and second just defeated
Go out to hold T3Between.4th switch SW4Then it is connected in series in the second power factor correction circuit 110 and the second negative output terminal T4Between, and the
Four switch SW4One end and the second negative output terminal T4Equally electrically connect with earth terminal G.Due to the first negative output terminal T2And the
Two negative output terminal T4Electrically connect with earth terminal G, the therefore first positive output end T1On voltage be actually first voltage V1, second
Positive output end T3On voltage be actually second voltage V2.
In some embodiments, the first power supply 20 and second source 21 are with a centrage LnElectrical connection, and can for but not
It is limited to wherein biphase in polyphase source, additionally, the first power supply 20 and second source 21 provide alternating current power supply.Furthermore, the
One power factor correction circuit 100 further includes one first output lateral capacitance C1, it is connected across the outlet side of the first power factor correction circuit 100,
Second power factor correction circuit 110 equally further includes one second output lateral capacitance C2, it is connected across the defeated of the second power factor correction circuit 110
Go out side.
The operating principle of the power system 1 of the present invention described further below.Referring again to Fig. 1, first, work as electricity
Only the first power module 10 in source supplying system 1, and when second source module 11 is to detach power system 1, now, if
Power system 1 comes into operation, and the first power module 10 operates corresponding, and receives the electric energy of the first power supply 20, and first
Power module 10 will control first switch SW1And second switch SW2For conducting state so that in the first power module 10
The electric energy of the first power supply 20 can be converted to first voltage V by one power factor correction circuit 1001, and via first switch SW1, second open
Close SW2, the first positive output end T1With the first negative output terminal T2It is sent to main circuit 90.
Once in the case that power system 1 operates and the first power module 10 also operates, script is detached power supply
The second source module 11 of supply system 1 is inserted in power system 1 so that second source module 11 is led in hot plug mode
Cross the second positive output end T3And the second negative output terminal T4Respectively with the first positive output end T1And the first negative output terminal T2Electrical connection and with
First power module 10 is connected in parallel, and so that second source module 11 is electrically connected with second source 21 and receive second source 21
During the electric energy being provided, now, the first power module 10 and second source module 11 are first controlled second switch SW respectively2With
And the 4th switch SW4Phase contrast only between the first power supply 20 and second source 21 or voltage difference are less than conducting during a setting value,
Even if consequently, it is possible to the phase contrast between the first power supply 20 and second source 21 or voltage difference are more than setting value, leading to the first power supply
The output current (not shown) of module 10 is by because the first negative output terminal T of the first power module 102And second source module
The second of 11 negative goes out to hold T4Common electrical connection earth terminal G and be intended to flow into and just inserted in power system 1 in hot plug mode
During second source module 11, due to now the first power module 10 and second source module 11 first according to the first power supply 20 and
Phase contrast between second source 21 or voltage difference are more than setting value and control second switch SW2And the 4th switch SW4Cut-off, because
The output current of this first power module 10 simultaneously cannot be via the first negative output terminal T2Flow in second source module 11, such one
Come, when second source module 11 is inserted power system 1 in hot plug mode and is connected in parallel with the first power module 10,
Just can avoid producing not expected return flow path in second source module 11, and then maintain in second source module 11 one
The filter effect of electromagnetic interface filter (not shown), prevent simultaneously second source module 11 the second power factor correction circuit 110 second
Output lateral capacitance C2Current potential have the too high situation of preliminary filling and occur.
What is more, the phase contrast between the first power supply 20 and second source 21 or voltage difference are less than setting value and make first
Power module 10 and second source module 11 control second switch SW respectively2And the 4th switch SW4After conducting, the second electricity
Source module 11 will continue and control the 3rd switch SW3Switch SW the 3rd3On at electrical connection with the second power factor correction circuit 110
Voltage, that is, second voltage V that the second power factor correction circuit 110 is exported2, more than the 3rd switch SW3With the second positive output end T3
Electrical connection on voltage, that is, by first switch SW turning on1And the first positive output end T1The first power module being transmitted
10 first voltage V1When conducting, in more detail, that is, when second source module 11 inserts power supply supply system in hot plug mode
System 1 and when being connected in parallel with the first power module 10, if now when the electric energy that second source 21 is provided, to there is no method to make second defeated
Go out lateral capacitance C2On second voltage V2Level be more than because of charging the first power module 10 output first voltage V1When, the
Two electric modules 11 will control the 3rd switch SW3Cut-off, thereby avoids the second output lateral capacitance C2Because the first power module 10 exports
First voltage V1And produce great dv/dt change, thereby prevent from surging the generation of electric current, only when second source 21 is carried
For electric energy persistently to second output lateral capacitance C2Charge so that second voltage V2Voltage level be more than first voltage V1Electricity
During voltage level, the second electric module 11 just can control the 3rd switch SW3Conducting, makes second voltage V that the second electric module 11 is exported2
It is sent to main circuit 90.
In some embodiments, as shown in figure 1, the first power module 10 further includes one first control unit 101, this first
Control unit 101 and the first power supply 20 and second switch SW2Control end electrical connection, and there is one first testing circuit 102,
First testing circuit 102 in order to detect phase place or the voltage of the first power supply 20, additionally, second source module 11 also comprises one second
Control unit 111, this second control unit 111 and second source 21 and the 4th switch SW4Electrical connection, and there is one second inspection
Slowdown monitoring circuit 112, its phase place or voltage in order to detect second source 21, the second testing circuit 112 is more electric with the first detection in addition
Road 102 signal connects and links up each other so that the first control unit 101 and the second control unit 111 can be by the first detection electricity
Road 102 and the second testing circuit 112 can learn testing result each other, and the therefore first control unit 101 just can be according to the first inspection
The testing result of slowdown monitoring circuit 102 and the second testing circuit 112 and learn the phase place between the first power supply 20 and second source 21
Whether difference or voltage difference are less than setting value, and then export corresponding control signal (not shown) to control second switch SW2Enter
The switching of row on or off, as the second control unit 111 synchronous foundation the first testing circuit 102 and the second testing circuit
112 testing result and learn phase contrast between the first power supply 20 and second source 21 or voltage difference whether less than setting
Value, and then export corresponding control signal (not shown) to control the 4th switch SW4Carry out the switching of on or off, thereby exist
When first power module 10 or second source module 11 just insert power system 1 in hot plug mode, prevent terminating in the first electricity
Not expected return flow path is produced in source module 10 or second source module 11.
Again in some embodiments, as shown in figure 1, the first power module 10 further includes one first comparison circuit 103, bridging
In first switch SW1Two ends, and with first switch SW1Control end electrical connection, it is in order to detect first switch SW1With first
Voltage at the electrical connection of power factor correction circuit 100, that is, first voltage V that the first power factor correction circuit 100 is exported1,
Whether it is more than first switch SW1With the first positive output end T1Electrical connection on voltage, that is, by turn on the 3rd switch SW3
And the second positive output end T2Second voltage V of the second source module 11 being transmitted2And correspond to output control signal (not shown),
To control first switch SW1Running.Further include one second comparison circuit 113 as second source module 11, be connected across the 3rd
Switch SW3Two ends, and with the 3rd switch SW3Control end electrical connection, its in order to detect the 3rd switch SW3With the second work(because of school
Voltage at the electrical connection of positive circuit 110, that is, second voltage V that the second power factor correction circuit 110 is exported2, if big
Switch SW in the 3rd3With the second positive output end T2Electrical connection on voltage, that is, by first switch SW turning on1And first
Positive output end T1Second voltage V of the first power module 10 being transmitted1And correspond to output control signal (not shown), to control
3rd switch SW3Running.
Again in some embodiments, the first power module 10 has more one first rectification circuit 104, is electrically connected to the first electricity
Between the input of source module 10 and the first power factor correction circuit 100, it is in order to rectification.Second source module 11 has more one
Second rectification circuit 114, is electrically connected between input and second power factor correction circuit 110 of second source module 11, its
In order to rectification.
Refer to Fig. 2 to 4, it is that the first switch shown in Fig. 1 may be implemented to the various of either switch in the 4th switch
The structural representation of mode.In other embodiments, first switch SW1～the four switch SW4Can be respectively by semiconductor power switch
Constituted, for example respectively N-type power MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) (n-type Power MosFET) as shown in Figure 2, figure
Power junction field shown in 3 imitates the back-to-back N-type power mos field effect crystal shown in transistor (Power JFET), Fig. 4
Pipe (Back-to-back Power MosFETs) or above-mentioned three kinds of transistors are selected one and are constituted, but are not limited.
In some embodiments, in order that the first power module 10 and second in the power system shown in Fig. 1
The output current of power module 11 is equal, as shown in figure 5, the first power module 10 can have more one first current balance circuit
105, second source module 11 has more one second current balance circuit 115, and the wherein first current balance circuit 105 is connected across the
Two switch SW2On, the second current balance circuit 115 is connected across the 4th switch SW3On, and the first current balance circuit 105 and
Two current balance circuit 115 signal connects and links up each other, the first current balance circuit 105 and the second current balance circuit
115 flow through second switch SW in order to detect respectively2And the 4th switch SW4Electric current, thereby make the first power module 10 and second
Power module 11 adjusts output current according to testing result, makes the output current of the first power module 10 and second source module 11
It is substantially equal.
Refer to Fig. 6, and coordinate Fig. 1, wherein Fig. 6 is that the control method flow process of the power system shown in Fig. 1 is illustrated
Figure.As shown in Fig. 1 and 6, first, in step S1, when the first power module 10 operates in power system 1, and the second electricity
Source module 11 continue hot plug in power system 1 when, the first power module 10 and second source module 11 first judge
Whether the phase contrast between one power supply 20 and second source 21 or voltage difference are less than a setting value, when the result judging is as being, enter
Enter step S2, that is, the first power module 10 and second source module 21 control second switch SW respectively2And the 4th switch SW4Lead
Logical；Conversely, when judged result for no when, enter step S5, that is, the first power module 10 and second source module 21 are controlled respectively
Second switch SW processed2And the 4th switch SW4Cut-off.
And after step S2 terminates, step S3 will be entered, that is, second source module 11 continues and judges second voltage V2Whether
More than first voltage V1, when the result judging is as being, enter step S4, that is, second source module 11 controls the 3rd switch SW3Lead
Logical；Conversely, when judged result for no when, enter step S6, that is, second source module 11 control the 3rd switch SW3Cut-off.Wherein
In above-mentioned steps S1, the first power module 10 controls first switch SW1Constant conduction.
In sum, the present invention provides a kind of power system and its control method, wherein in power system
Multiple power modules are all hot plug and for being connected in parallel, additionally, the positive output end of each power module and bear out end and more divide
Not electricity Lian Jie a switch, thereby arbitrary power module power system is inserted in hot plug mode and with the electricity operating
When source module is connected in parallel, phase contrast only between all power supplys electrically connecting with all power modules for all power modules or
Voltage difference is less than during setting value and controls and bear out the switch conduction that end electrically connects, and continues and make hot plug in power system
The power module being connected in parallel with the power module operating is more than, in the voltage itself being exported, the power supply mould operating
During the voltage that block is exported, control the switch that hot plug is electrically connected in this power module of power system with positive output end
Conducting, thereby, the power system of the present invention and need not additionally arrange isolating transformer can arbitrary power module just with
Hot plug mode insert power system and with power system in power module be connected in parallel when, prevent with hot plug
The power module that mode inserts power system produces not expected return flow path and electric current of surging generation, the present invention simultaneously
The volume of power system can reduce, and the efficiency of power system also can be lifted.
The present invention appointed by those skilled in the art apply craftsman think and be all as modify, so neither de- apply for a patent right as attached
The be intended to protector of claimed range.
Claims (12)
1. a kind of power system, comprises：
One first power module, can hot plug in this power system, and change the electric energy of one first power supply, with Yu Yi
Export a first voltage between one positive output end and one first negative output terminal, and comprise one first power factor correction circuit, one first open
Close and a second switch, this first power factor correction circuit exports this first voltage, this first switch be electrically connected to this first work(because
Between correcting circuit and this first positive output end, this second switch is electrically connected to this first power factor correction circuit and this is first negative defeated
Go out between end, and electrically connect with an earth terminal；And
One second source module, can hot plug in this power system, and change the electric energy of a second source, with this
First positive output end electrical connection one second positive output end and electrically connect with this first negative output terminal and this earth terminal one second
Export a second voltage between negative output terminal, and comprise one second power factor correction circuit, one the 3rd switch and one the 4th switch, its
In this second power factor correction circuit export this second voltage, the 3rd switch be electrically connected to this second power factor correction circuit and this
Between two positive output ends, the 4th switch is electrically connected between this second power factor correction circuit and this second negative output terminal；
Wherein, this first power supply and this second source are electrically connected to each other with a centrage, and when this first power module is in this
When running in power system and this second source modular splicing hot plug are in this power system, this first power supply mould
Block and this second source module first control this second switch and the 4th switch respectively only in this first power supply and this second source
Between phase contrast or voltage difference be less than a setting value when conducting, this second source modular splicing control the 3rd switch in this second
Voltage is more than conducting during this first voltage.
2. power system as claimed in claim 1, wherein this power system are applied in an electronic equipment, and with
One main circuit electrical connection of this electronic equipment, in order to drive this main circuit to operate.
3. power system as claimed in claim 1, wherein this first power supply and this second source are in polyphase source
Wherein biphase.
4. power system as claimed in claim 1, wherein when this first power module is transported in this power system
Make and this second source modular splicing hot plug in this power system when, this first power module and this second source mould
Block first controls this second switch and the 4th switch phase contrast only between this first power supply and this second source or voltage respectively
More than cut-off during this setting value, this second source modular splicing controls the 3rd to switch in this second voltage less than this first electricity to difference
End during pressure.
5. power system as claimed in claim 1, wherein this first switch, this second switch, the 3rd switch and
4th switch is all by a N-type power MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor), a power junction field effect transistor or a back-to-back N-type
Power MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) thrin is constituted.
6. power system as claimed in claim 1, wherein this first power module further include one first control unit, with
The control end electrical connection of this first power supply and this second switch, and there is one first testing circuit, this first testing circuit is used
To detect phase place or the voltage of this first power supply, and this second source module further includes one second control unit, this second control
Unit is electrically connected with this second source and the 4th switch, and has one second testing circuit, in order to detect this second source
Phase place or voltage, and be connected with this first testing circuit signal and link up each other so that this first control unit and this second
Control unit is learnt this first power supply according to the testing result of this first testing circuit and this second testing circuit respectively and is somebody's turn to do
Whether the phase contrast between second source or voltage difference are less than this setting value, and then respectively correspondingly control this second switch and be somebody's turn to do
The action of the 4th switch.
7. power system as claimed in claim 1, wherein this second source module further include a comparison circuit, are connected across
Two ends of the 3rd switch, and electrically connect with the control end of the 3rd switch, in order to detect the 3rd switch on one end this
Whether two voltages are more than this first voltage on the 3rd switch other end, accordingly to control the running of the 3rd switch.
8. power system as claimed in claim 1, wherein this first power module are with this second source wired in parallel even
Connect.
9. a kind of control method of power system, wherein this power system comprise one first hot-swappable power supply mould
Block and a second source module, this first power module changes the electric energy of one first power supply, with one first positive output end and
Export a first voltage between one first negative output terminal, and comprise one first power factor correction circuit, a first switch and one second and open
Close, this first power factor correction circuit exports this first voltage, this first switch is electrically connected to this first power factor correction circuit and is somebody's turn to do
Between first positive output end, this second switch is electrically connected between this first power factor correction circuit and this first negative output terminal, and
Electrically connect with an earth terminal, this second source module changes the electric energy of a second source, with being electrically connected with this first positive output end
Export between one second positive output end connecing and one second negative output terminal electrically connecting with this first negative output terminal and this earth terminal
One second voltage, and comprise one second power factor correction circuit, one the 3rd switch and one the 4th switch, wherein this second power factor correction function
This second voltage of circuit output, the 3rd switch is electrically connected between this second power factor correction circuit and this second positive output end, should
4th switch is electrically connected between this second power factor correction circuit and this second negative output terminal, and this first power supply and this second source
It is electrically connected to each other with a centrage, this control method comprises the steps of：
A () operates in this power system when this first power module, and this second source modular splicing hot plug is in this
When in power system, this first power module and this second source module first judge between this first power supply and this second source
Phase contrast or voltage difference whether be less than a setting value；
B (), when judged result is to be, this first power module and this second source module control this second switch respectively and are somebody's turn to do
4th switch conduction；
C () this second source modular splicing differentiates whether this second voltage is more than this first voltage；And
D (), when judged result is to be, this second source module controls the 3rd switch conduction.
10. control method as claimed in claim 9, wherein further includes step (a1) after step (a)：When judged result is
When no, this first power module and this second source module control this second switch and the 4th switch cut-off respectively.
11. control methods as claimed in claim 9, wherein further include step (c1) after step (c)：When judged result is
When no, this second source module controls the 3rd switch cut-off.
12. control methods as claimed in claim 9, wherein in step (a), this first power module controls this first switch
Constant conduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310019844.6A CN103944420B (en) | 2013-01-18 | 2013-01-18 | Power system and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310019844.6A CN103944420B (en) | 2013-01-18 | 2013-01-18 | Power system and its control method |
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| Publication Number | Publication Date |
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| CN103944420A CN103944420A (en) | 2014-07-23 |
| CN103944420B true CN103944420B (en) | 2017-03-01 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105511582B (en) * | 2014-09-23 | 2020-03-24 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| JP6546035B2 (en) * | 2015-08-21 | 2019-07-17 | Juki株式会社 | Sewing machine motor power circuit |
| CN106598144B (en) * | 2015-10-19 | 2019-11-19 | 技嘉科技股份有限公司 | Processing function expansion board and its electric energy expansion board |
| CN108347166B (en) * | 2017-01-24 | 2019-11-05 | 台达电子企业管理（上海）有限公司 | Power module train |
| CN109327149A (en) * | 2017-07-31 | 2019-02-12 | 华为技术有限公司 | Power module |
| TWI729552B (en) * | 2019-11-04 | 2021-06-01 | 廣達電腦股份有限公司 | Operating circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6014322A (en) * | 1997-08-14 | 2000-01-11 | Kabushiki Kaisha Toshiba | Power supply unit, parallel operation control circuit applied thereto, and parallel operation control method |
| JP2002215273A (en) * | 2001-01-19 | 2002-07-31 | Nec Kofu Ltd | Power supply system, and hot plugging method |
| CN1459906A (en) * | 2002-05-22 | 2003-12-03 | 上海贝尔有限公司 | New distribution type power supply system |
| CN101888112A (en) * | 2009-05-15 | 2010-11-17 | 加弘科技咨询(上海)有限公司 | Power system provided with stand-by power |
-
2013
- 2013-01-18 CN CN201310019844.6A patent/CN103944420B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6014322A (en) * | 1997-08-14 | 2000-01-11 | Kabushiki Kaisha Toshiba | Power supply unit, parallel operation control circuit applied thereto, and parallel operation control method |
| JP2002215273A (en) * | 2001-01-19 | 2002-07-31 | Nec Kofu Ltd | Power supply system, and hot plugging method |
| CN1459906A (en) * | 2002-05-22 | 2003-12-03 | 上海贝尔有限公司 | New distribution type power supply system |
| CN101888112A (en) * | 2009-05-15 | 2010-11-17 | 加弘科技咨询(上海)有限公司 | Power system provided with stand-by power |
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