CN109728577A - The control method of power system and power system - Google Patents
The control method of power system and power system Download PDFInfo
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Abstract
The invention discloses a kind of control methods of power system, suitable for controlling the power system with multiple current sources.These current sources are one another in series.The control method of power system includes: to measure the voltage difference of two connecting pins of each current source to obtain multiple voltage differential signals；One, which is calculated, according to these voltage differential signals presses signal；And press signal and these voltage differential signals to generate multiple correction signals according to this to adjust separately multiple output electric currents of these current sources, these correction signals, which are respectively associated, presses multiple differences of the signal value of signal with the signal value of these voltage differential signals in this.The invention also discloses a kind of power systems.
Description
Technical field
A kind of control method of the present invention about power system and power system, it is especially a kind of with multiple
The control method of the power system of current source and the power system with multiple current sources.
Background technique
In practice, power system would generally have multiple power supplys, to adapt to the load of different size.Power supply supply
The power supply of system is, for example, voltage source or current source, and voltage source or current source can be switched to depending on demand.Previous
Cognition in, the simple multiple voltage sources of parallel connection or the multiple current sources of series connection do not allow technically.It is supplied with power supply
System tool is there are two DC power supply, and for the series connection of the two DC power supplies and output loading are a voltage source, in the past in this feelings
One among the two DC power supplies can be set as current source under condition, and another among the two DC power supplies is set
It is set to voltage source.Under this framework, it is set as one of DC power supply of current source initiatively to adjust electric current or fit
Loading condition is answered to adjust voltage；It is set as another DC power supply of voltage source then initiatively to adjust voltage or adapt to negative
It carries situation and adjusts electric current.
But under this framework, moment in the variation in voltage of load, the electricity of moment increased voltage or reduction
Pressure all must be by wherein DC power supply (be set as current source person) Lai Fanying.That is, i.e. only by single DC power supply
Bear this variation in voltage.Similarly, the electric current of the moment in the current variation of load, moment increased electric current or reduction is all
It must be by wherein DC power supply (be set as voltage source person) Lai Fanying.That is, only bearing this by single DC power supply
Current variation.In other words, although such framework intuition and convenient for design, be but possible to allow direct current in practice
Sizable burden is born in source, and reduces the service life of DC power supply, even causes danger.
Summary of the invention
The invention reside in the control method of a kind of power system and power system is provided, to overcome previous power supply
The problem of framework of supply system causes each DC power supply to bear too burden greatly when load state variation.
The invention discloses a kind of control methods of power system, suitable for controlling the electricity with multiple current sources
Source supplying system, these current sources are one another in series.The control method of power system includes: two of each current source of measurement
The voltage difference of connecting pin is to obtain multiple voltage differential signals；One, which is calculated, according to these voltage differential signals presses signal；And foundation
This presses signal and these voltage differential signals generate multiple correction signals to adjust separately multiple output electric currents of these current sources,
These correction signals, which are respectively associated, presses multiple differences of the signal value of signal with the signal value of these voltage differential signals in this.
The invention discloses a kind of power systems.This power system has multiple current sources and a Pressure and Control
Circuit.There are two connecting pins for each current source tool.These current sources are one another in series with these connecting pins.Each current source this two
There is a voltage difference between a connecting pin.These current sources are electrically connected in voltage-equalizing control circuit.This voltage-equalizing control circuit is used
Signal is pressed to generate one according to these voltage differences.This presses signal designation to have an average voltage poor.And this voltage-equalizing control circuit
Multiple correction signals are generated to multiple differences according to these voltage differences and this average voltage difference.Each correction signal is to refer to
Show one of these current sources adjustment output electric current.
The invention discloses a kind of power systems.This power system have multiple current sources with it is multiple voltage-controlled
Circuit processed.There are two connecting pins for each current source tool.These current sources are one another in series with these connecting pins.The two of each current source
There is a voltage difference between a connecting pin.These current sources are electrically connected in each voltage-equalizing control circuit.Each Pressure and Control
Circuit presses signal to generate one according to these voltage differences.This presses signal to indicate that an average voltage is poor, and each equal
Press control circuit to generate a school according to one of these voltage differential signals correspondence and a difference of this average voltage difference
Positive signal.Each correction signal is to indicate one of these current sources correspondence adjustment output electric current.
The explanation of explanation and the following embodiments and the accompanying drawings above with respect to the content of present invention is of the invention with explanation to demonstrate
Spirit and principle, and claims of the present invention is provided and is further explained.
Detailed description of the invention
Fig. 1 is the method flow diagram of the control method of the power system according to depicted in one embodiment of the invention.
Fig. 2A is the functional block diagram of the power system according to depicted in one embodiment of the invention.
Fig. 2 B is the functional block diagram of the power system according to depicted in another embodiment of the present invention.
Fig. 3 is the equivalent-circuit model schematic diagram of the current source according to depicted in one embodiment of the invention.
Fig. 4 A is the functional block diagram of the power system according to depicted in another embodiment of the present invention.
Fig. 4 B is the functional block diagram of the power system according to depicted in yet another embodiment of the invention.
Fig. 5 is the functional block diagram of the power system according to depicted in further embodiment of this invention.
Fig. 6 is the functional block diagram according to power system depicted in still another embodiment of the present invention.
Fig. 7 is the functional block diagram according to power system depicted in the present invention again another embodiment.
Wherein, appended drawing reference:
1~5 power system
12a~52a, 12b~52b, 12c~52c current source
222a ', 222b ', 222c ' power supply circuit
224a ', 224b ', 224c ' third computing circuit
14~54 voltage-equalizing control circuits
242,342, the first computing circuit of 542a, 542b, 542c
The second computing circuit of 244a, 244b, 244c, 344a, 344b, 344c, 544a, 544b, 544c
346a, 346b, 346c, 546a, 546b, 546c gain circuitry
16a ', 16b ', 16c ', 26a ', 26b ', 26c ', 26a~56a, 26b~56b, 26c~56c measuring circuit
The connecting pin E1, E2
IS adjustable current circuit
L load
R equivalent resistance
Sa, Sb, Sc voltage differential signal
Sav presses signal
Ska, Skb, Skc correction signal
Ska ', Skb ', Skc ' preliminary corrections signal
Specific embodiment
Describe detailed features and advantage of the invention in detail in embodiments below, content is enough to make this field
Technical staff understands technology contents of the invention and implements accordingly, and according to content disclosed in this specification, claims
And schema, those skilled in the art can be readily understood upon the relevant purpose of the present invention and advantage.Embodiment below is into one
The step viewpoint that the present invention will be described in detail, but it is non-anyways to limit scope of the invention.
Fig. 1 is please referred to, Fig. 1 is the method for the control method of the power system according to depicted in one embodiment of the invention
Flow chart.The control method of this power system is suitable for controlling the power system with multiple current sources, these
Current source is one another in series.The control method of the power system includes: step S101, measures two of each current source
The voltage difference of connecting pin is to obtain multiple voltage differential signals；Step S103 calculates one according to these voltage differential signals and presses signal；
Step S105 presses signal and these voltage differential signals to generate multiple correction signals to adjust separately these current sources according to this
Multiple output electric currents, these correction signals, which are respectively associated, presses the signal value of signal and the signal value of these voltage differential signals in this
Multiple differences.
Based on such control method, the present invention more provides a variety of different power systems.Please also refer to Fig. 2A
To be illustrated to one of power system, Fig. 2A is the power system according to depicted in one embodiment of the invention
Functional block diagram.Power system 1 has multiple current sources and a voltage-equalizing control circuit 14.Power supply is lifted in this embodiment
Supply system 1 is illustrated for having current source 12a, 12b, 12c, the number of current source possessed by right power system 1
Amount is not limited thereto.Current source 12a, 12b, 12c are one another in series, and current source 12a, 12b, 12c are series at load L.Electric current
There are two connecting pins for any current source tool of source 12a, 12b, 12c.Current source 12a, 12b, 12c are gone here and there each other with these connecting pins
Connection.There is a voltage difference between two connecting pins of any current source in current source 12a, 12b, 12c.In this embodiment,
Two connecting pins of current source 12a have voltage difference Va, have voltage difference Vb, electric current between two connecting pins of current source 12b
There is voltage difference Vc between two connecting pins of source 12c.Voltage-equalizing control circuit 14 be electrically connected current source 12a, 12b,
12c.In Fig. 1, the connection relationship on each interelement electric power is indicated with thick line, and indicate each interelement communication to exchange with filament
The connection relationship of information.
Voltage-equalizing control circuit 14 presses signal to generate one according to voltage difference Va, Vb, Vc.The pressure signal designation
There is an average voltage poor.In one embodiment, this average voltage difference is the arithmetic average of voltage difference Va, Vb, Vc.It is voltage-controlled
Circuit 14 processed is each to generate multiple correction signals according to multiple differences of multiple voltage differences and this average voltage difference
Correction signal adjusts output electric current to one of indicator current source 12a, 12b, 12c.
It is the function block of the power system according to depicted in another embodiment of the present invention referring again to Fig. 2 B, Fig. 2 B
Figure.In the embodiment shown in Fig. 2 B, the framework of power system 1 ' is generally similar in power system as the aforementioned
1.Only in the embodiment shown in Fig. 2 B, power system 1 ' has more measuring circuit 16a ', 16b ', 16c '.Measuring circuit
Current source 12a ', 12b ', 12c ' is electrically connected in 16a ', 16b ', 16c '.Measuring circuit 16a ', 16b ', 16c ' respectively to
Voltage differential signal Sa ', Sb ', Sc ' are generated according to voltage difference Va, Vb, Vc as the aforementioned.
Continue aforementioned, voltage differential signal Sa ' is to indicate voltage difference Va as the aforementioned, and voltage differential signal Sb ' is to indicate
Voltage difference Vb, voltage differential signal Sc ' as the aforementioned are to indicate voltage difference Vc as the aforementioned.In in practice, measuring circuit 16a ',
16b ', 16c ' can be is implemented into current source 12a ', 12b ', in 12c ' respectively, alternatively, measuring circuit 16a ', 16b ', 16c '
It can be and be implemented into voltage-equalizing control circuit 14 ' or measuring circuit 16a ', 16b ', 16c ' are also possible to independently of current source
The element of 12a ', 12b ', 12c ' and voltage-equalizing control circuit 14 ', it is herein and without restriction.It is subsequent with framework shown in Fig. 2 B,
Namely measuring circuit 16a ', 16b ', 16c ' are independently of other than current source 12a ', 12b ', 12c ' and voltage-equalizing control circuit 14 '
Element, to carry out subsequent explanation.
Referring to figure 3. to carry out further description to current source 12a (current source 12a '), Fig. 3 is according to the present invention
The equivalent-circuit model schematic diagram of current source depicted in one embodiment.As shown in figure 3, current source 12a is for example with adjustable electric
A current circuit IS and equivalent resistance R, adjustable current circuit I S are parallel to equivalent resistance R.It should be noted that equivalent resistance R is electricity
The equivalent resistance of stream source 12a integrated circuit, being not necessarily referring to current source 12a really has the electricity for being parallel to adjustable current circuit I S
Resistance.
Referring to circuit structure as shown in Figure 3, needed for the size for the electric current that adjustable current circuit I S is provided is greater than load L
Electric current in other words the size of electric current needed for system when, extra electric current can flow through equivalent resistance R and adjustable current circuit I S
The current loop constituted.At this point, more making the circuit because of current source 12a other than causing the burden of adjustable current circuit I S
This fever, or even burn, and this situation is it can also happen that in current source 12b or current source 12c.For another angle, when
When loading the variation in voltage of L or flowing through the current variation of load L, the variation in voltage amount or current variation amount for loading L i.e. can shadows
The cross-pressure for arriving current source 12a, 12b, 12c is rung, and influences to flow through the electric current of equivalent resistance R, and leads to the problem of fever.
Corresponding to this, voltage-equalizing control circuit 14 is to control each current source, so that each current source maintains as much as possible
Press.Current source 12a, 12b, 12c and measuring circuit 16a, 16b, 16c is electrically connected in voltage-equalizing control circuit 14.It is voltage-controlled
Circuit 14 processed presses signal to generate one according to voltage differential signal Sa, Sb, Sc, and voltage-equalizing control circuit 14 is to according to voltage
Difference signal Sa, Sb, Sc and the multiple differences for pressing signal generate correction signal Ska, Skb, Skc.The pressure letter
Number signal value be, for example, each voltage differential signal signal value arithmetic average or weighted average.Correction signal is wherein
One of signal value be associated with that these voltage differential signals are one of corresponding and the difference for pressing signal.In practice
On, voltage-equalizing control circuit 14 can be an independent machine or a control panel.Alternatively, voltage-equalizing control circuit 14 can also be with
It is implemented into one of current source 12a, 12b, 12c.
In one embodiment, in corresponding time point, the signal value of correction signal Ska is that voltage differential signal Sa believes with pressure
Number signal value difference, the signal value of correction signal Skb is the difference of voltage differential signal Sb with the signal value for pressing signal, school
The signal value of positive signal Skc is the difference of voltage differential signal Sc with the signal value for pressing signal.Correction signal Ska, Skb, Skc are used
To indicate respectively one of current source 12a, 12b, 12c correspondence adjustment output electric current.After adjusted, the two of current source 12a
The voltage difference of connecting pin can generally be equal to the voltage difference of two connecting pins of current source 12b, and two companies of current source 12a
The voltage difference for connecing end can generally be equal to voltage difference with two connecting pins of current source 12c.So that current source 12a,
12b, 12c, which reach, to press.
It is please the function side of the power system according to depicted in another embodiment of the present invention referring next to Fig. 4 A, Fig. 4 A
Block figure.In the embodiment shown in Fig. 4 A, the structure system of power system 2, which is substantially the same to supply in power supply as the aforementioned, is
System 1.The difference is that the voltage-equalizing control circuit 24 of power system 2 has the first computing circuit 242 and the second operation electricity
Road 244a, 244b, 244c.Current source 22a, 22b, 22c, and is electrically connected in second computing circuit 244a, 244b, 244c
The first computing circuit 242 is electrically connected in two computing circuit 244a, 244b, 244c.
In this embodiment, when the first computing circuit 242 obtains voltage differential signal Sa, Sb, Sc, the first computing circuit
242, which carry out arithmetic mean to the signal value to voltage differential signal Sa, Sb, Sc, generates the pressure signal Sav.
One of second computing circuit 244a, 244b, 244c believes to more pressure signal Sav with corresponding voltage difference
Number Sa, Sb, Sc are to control one of corresponding selectively adjustment output electric current in current source 22a, 22b, 22c.With second
For for computing circuit 244a, the second computing circuit 244a is more to press signal Sav and voltage differential signal Sa, and second
Computing circuit 244a is to generate correction signal Ska according to comparison result with the size of indicator current source 22a adjustment output electric current.
In one embodiment, the second computing circuit 244a is to the signal value to the signal value and voltage differential signal Sa of pressing signal Sav
Subtracted each other to generate correction signal Ska.
For an actual example, when the signal value of voltage differential signal Sa is greater than the signal value for pressing signal Sav, the
Two computing circuit 244a ' downgrade the size of output electric current with correction signal Ska indicator current source 22a, flow through electric current to downgrade
The electric current of the equivalent resistance of source 22a, and reduce the voltage difference at current source both ends.Conversely speaking, when the letter of voltage differential signal Sa
Number value be less than press signal Sav signal value when, the second computing circuit 244a ' is increased with correction signal Ska indicator current source 22a
The size that exports electric current, to increase the electric current for flowing through the equivalent resistance of current source 22a ', and the falling-rising electricity at current source both ends
Pressure difference.
It is the function side of the power system according to depicted in yet another embodiment of the invention please with reference to Fig. 4 B, Fig. 4 B
Block figure.In the embodiment shown in Fig. 4 B, current source 22a ', 22b ', 22c ' be more respectively provided with power supply circuit 222a ',
222b ', 222c ' and third computing circuit 224a ', 224b ', 224c '.Power supply circuit 222a ', 222b ', 222c ' are respectively
It is electrically connected third computing circuit 224a ', 224b ', 224c '.Power supply circuit 222a ', 222b ', 222c ' to mention respectively
For exporting electric current as the aforementioned.In addition, the third computing circuit 224a ' of current source 22a ' is used for by taking current source 22a ' as an example
According to reference signal Iref and voltage differential signal Sa instruction power supply circuit 222a ' adjustment output electric current.Third operation electricity
Road 224a ' is, for example, the current source of current control and is controlled by a reference signal Sref.Reference signal Sref is, for example, an electric current
Signal or a voltage signal, it is herein and without restriction.It is for the example of a current signal, at this time with reference signal Sref
Power supply circuit 222a ' is, for example, the current source of a current control, and third computing circuit 224a ' is to according to correction signal
Ska adjusts the size of current of reference signal Sref, and the reference signal Sref being adjusted is supplied to power supply circuit
222a'.The working method of current source 22b ' and current source 22c ' when can and so on, repeat no more.
It is please the function block of the power system according to depicted in further embodiment of this invention referring next to Fig. 5, Fig. 5
Figure.In the embodiment shown in fig. 5, the circuit structure of power system 3 is generally similar in power system above-mentioned
2, correlative detail is repeated no more in this.The difference is that the voltage-equalizing control circuit 34 of power system 3 is with more gain electricity
Road 346a, 346b, 346c.Gain circuitry 346a, 346b, 346c be electrically connected second computing circuit 344a, 344b,
344c, and computing circuit 342 is electrically connected in gain circuitry 346a, 346b, 346c.Gain circuitry 346a, 346b, 346c points
It Dui Yingyu not one of multiple weight gains.In one embodiment, the rated power of current source 32a, 32b, 32c is different, increases
The corresponding weight gain of beneficial circuit 346a is the rated power of current source 32a and the total rated power of current source 32a, 32b, 32c
Ratio, the corresponding weight gain of gain circuitry 346b is the total of rated power and current source 32a, 32b, 32c of current source 32b
The ratio of rated power, the corresponding weight gain of gain circuitry 346c be current source 32c rated power and current source 32a,
The ratio of the total rated power of 32b, 32c.It above are only citing demonstration, when the specified function of the section current source in all current sources
Above-mentioned content is equally applicable to when rate is identical.
In this embodiment, the second computing circuit 344a according to pressure signal Sav and voltage differential signal Sa to generate just
Walk correction signal Ska '.Similarly, the second computing circuit 344b according to pressure signal Sav and voltage differential signal Sb to generate just
Correction signal Skb ' is walked, the second computing circuit 344c is to generate preliminary corrections according to pressure signal Sav and voltage differential signal Sc
Signal Ska '.Second computing circuit 344a, 344b, 344c is first according to pressing signal Sav and voltage differential signal Sa, Sb, Sc to generate
Walk correction signal Ska ', Skb ', Skc ' correlative detail it is similar in aforementioned second computing circuit 244a according to pressure signal Sav with
Voltage differential signal Sa generates correction signal Ska, repeats no more in this.
Gain circuitry 346a, 346b, 346c are to adjust preliminary corrections signal according to these corresponding weight gains respectively
Ska ', Skb ', Skc ', to generate correction signal Ska, Skb, Skc respectively.It lifts for for gain circuitry 346a, gain circuitry
346a by the signal value of preliminary corrections signal Ska ' be multiplied by corresponding gain (rated power and current source 32a of current source 32a,
The ratio of the total rated power of 32b, 32c) and generate correction signal Ska.Correction signal Ska is adjusted to indicator current source 322a
Corresponding output electric current.In in practice, the gain of gain circuitry 346a, 346b, 346c can be pre-set, be also possible to
It is dynamically adjustable, it is herein and without restriction.
Please illustrate the power system of another kind provided by the present invention referring next to Fig. 6, Fig. 6 is according to the present invention
The functional block diagram of power system depicted in still another embodiment.In embodiment shown in fig. 6, power system
4 structure is generally similar in power system 1 above-mentioned, and correlative detail not repeats to repeat.And power system 4 with
Power system 1 the difference is that, power system 4 have multiple voltage-equalizing control circuits, in this measure Pressure and Control
It is illustrated for circuit 44a, 44b, 44c.Voltage-equalizing control circuit 44a, 44b, 44c be electrically connected current source 42a, 42b,
42c.Voltage-equalizing control circuit 44a, 44b, 44c to according to voltage differential signal Sa, Sb, Sc generate respectively correction signal Ska, Skb,
Skc, to indicate respectively current source 42a, 42b, 42c adjustment output electric current.
In in practice, it is either multiple independent that voltage-equalizing control circuit 44a, 44b, 44c can be more independent machines
Control panel.Alternatively, implementing in pattern in another kind, due to foundation in the control method of power system provided by the present invention
The voltage differential signal of each current source carries out correlated judgment and control, if provide voltage differential signal Sa, Sb, Sc of each current source to
Voltage-equalizing control circuit 44a, 44b, 44c, voltage-equalizing control circuit 44a, 44b, 44c can also be implemented in respectively current source 42a, 42b,
42c, and being not necessarily will realize and be independent machine or control panel.For another angle, as long as each current source obtains
Required voltage differential signal, can be adjusted the output electric current of current source, to achieve the effect that each current source is pressed.Implement herein
In example, current source 42a, 42b, 42c are not required to deliberately be set as active control person (master) or passive controlled person
(slave).In this way, it is relatively simple in addition to making rate-determining steps, and each current source 42a, 42b, 42c can also possess respectively
From independence, the case where avoiding a current source from making mistakes and involve other current sources.
It is please the function side according to power system depicted in still another embodiment of the present invention referring next to Fig. 7, Fig. 7
Block figure.In the embodiment shown in fig. 7, the structure of power system 5 is generally similar in power system 4, related thin
Section not repeats to repeat.Power system 5 and power system 4 the difference is that, the pressure of power system 5
Control circuit 54a, 54b, 54c be respectively provided with first computing circuit 542a, 542b, 542c, second computing circuit 544a, 544b,
544c and gain circuitry 546a, 546b, 546c.For voltage-equalizing control circuit 54a, gain circuitry 546a is electrically connected the second fortune
Circuit 544a is calculated, and gain circuitry 546a is also electrically connected at current source 522a.
In summary, the present invention provides the control methods of a kind of power system and power system.With
For power system, power system has the multiple current sources being one another in series, and power system is voltage-controlled
Circuit processed can adjust the output electric current of each current source according to voltage differential signal with pressure signal.Whereby, even if in electric current
In the case where source-series, when the end voltage of load changes, the voltage difference at the both ends of each current source is still identical,
Namely each current source is all and presses.On the other hand, when the end voltage of load changes, pass through voltage differential signal
With press signal, the voltage change of load can undertake together by all current sources, and avoids and allow single or a small number of electric currents
Source undertakes all variations.
Although the present invention is disclosed as above with embodiment above-mentioned, however, it is not to limit the invention.This hair is not being departed from
In bright spirit and scope, carried out by change and retouch, belong to scope of patent protection of the invention.It is defined about the present invention
Protection scope please refers to appended claims.
Claims (11)
1. a kind of control method of power system, which is characterized in that suitable for controlling the power supply with multiple current sources
Supply system, those current sources are one another in series, and the control method of the power system includes:
The voltage difference of two connecting pins of each current source is measured to obtain multiple voltage differential signals；
One, which is calculated, according to those voltage differential signals presses signal；And
Signal is pressed to generate multiple correction signals with those voltage differential signals to adjust separately the multiple of those current sources according to this
Export electric current, those correction signals, which are respectively associated, press the more of the signal value of signal and the signal value of those voltage differential signals in this
A difference.
2. the control method of power system according to claim 1, which is characterized in that the specified function of those current sources
Rate is different, further includes in the step of signal being pressed to generate those correction signals with those voltage differential signals according to this:
This, which is adjusted separately, according to multiple weight gains presses signal to generate multiple compensation and press signal, one of those weight gains
For the ratio of the total rated power of the rated power and those current sources of the corresponding current source among those current sources；And
Compare the corresponding voltage differential signal among one of those compensation pressure signal and those voltage differential signals, with
Generate corresponding correction signal；
The voltage source adjustment output electric current that the corresponding voltage differential signal is generated among those current sources is controlled with the correction signal.
3. the control method of power system according to claim 2, which is characterized in that those current sources difference is controlled
In multiple control electric currents, in comparing the corresponding voltage among one of those correction signals and those voltage differential signals
Difference signal, with control generated among those current sources the corresponding voltage differential signal voltage source adjustment output electric current the step of
In, to adjust separately those control electric currents according to those correction signals.
4. a kind of power system characterized by comprising
Multiple current sources, each current source tool is there are two connecting pin, those current sources are one another in series with those connecting pins, Mei Yi electricity
There is a voltage difference between two connecting pins in stream source；And
Those current sources are electrically connected in one voltage-equalizing control circuit, and the voltage-equalizing control circuit is to generate one according to voltage difference
Signal is pressed, this presses signal designation to have an average voltage poor, and the voltage-equalizing control circuit is to according to those voltage differences and this
Multiple differences of average voltage difference generate multiple correction signals, and each correction signal is to indicate that one of those current sources are adjusted
Whole output electric current.
5. power system according to claim 4, which is characterized in that the voltage-equalizing control circuit further includes:
One first computing circuit, is electrically connected those current sources, which should to generate according to voltage difference
Press signal；And
Multiple second computing circuits, are electrically connected first computing circuit, one of those second computing circuits to
One of this is pressed signal corresponding with those voltage differences to subtract each other, to generate the corresponding correction signal.
6. power system according to claim 4, which is characterized in that the rated power of those current sources is different, should
Voltage-equalizing control circuit further includes:
One first computing circuit, is electrically connected those current sources, which should to generate according to voltage difference
Press signal；
Multiple second computing circuits, are electrically connected first computing circuit, one of those second computing circuits to
One of this is pressed signal corresponding with those voltage differences to subtract each other, to generate corresponding preliminary corrections signal；And
Multiple gain circuitries, each gain circuitry are electrically connected corresponding wherein with each gain circuitry in the second computing circuit
One of, each gain circuitry corresponds respectively to one of multiple weight gains, those gain circuitries are to respectively according to corresponding
Those weight gains adjust the corresponding preliminary corrections signal to generate those correction signals；
Wherein, one of those weight gains are the rated power of one of those current sources and the total value of those current sources
Determine the ratio of power.
7. power system according to claim 4, which is characterized in that one of those current sources include:
One third computing circuit, is electrically connected the voltage-equalizing control circuit, and the third computing circuit is to according to the corresponding correction
Signal adjusts the size of current of a reference current；And
One power supply module is electrically connected the third computing circuit, and the power supply module according to by the third to transport
It calculates the reference current that the regulation of electrical circuit is crossed and output electric current is provided.
8. a kind of power system characterized by comprising
Multiple current sources, each current source tool is there are two connecting pin, those current sources are one another in series with connecting pin, each current source
Two connecting pins between have a voltage difference；
Those current sources, each voltage-equalizing control circuit is electrically connected in multiple voltage-equalizing control circuits, each voltage-equalizing control circuit
Signal is pressed to generate one according to those voltage differences, this presses signal to indicate that an average voltage is poor, and each voltage-controlled
Circuit processed is to generate a correction signal according to one of those voltage differences correspondence and a difference of average voltage difference, often
One correction signal is to indicate one of those current sources correspondence adjustment output electric current.
9. power system according to claim 8, which is characterized in that one of those voltage-equalizing control circuits more wrap
It includes:
One first computing circuit, is electrically connected those current sources, which should to generate according to voltage difference
Press signal；And
One second computing circuit is electrically connected first computing circuit, second computing circuit to this is pressed signal with it is right
The voltage difference answered is subtracted each other, to generate the corresponding correction signal；
Wherein, the rated power and those current sources for the current source which is electrically connected for the voltage-equalizing control circuit
Rated power power summation ratio.
10. power system according to claim 8, which is characterized in that those current sources are respectively provided with different volumes
Determine power, one of those voltage-equalizing control circuits include:
One first computing circuit, is electrically connected those current sources, which should to generate according to voltage difference
Press signal；And
One second computing circuit is electrically connected first computing circuit, second computing circuit to this is pressed signal with it is right
The voltage difference answered is subtracted each other, to generate corresponding preliminary corrections signal；
One gain circuitry is electrically connected second computing circuit, and the gain circuitry is to according to one of multiple weight gains
The preliminary corrections signal is adjusted to generate the corresponding correction signal；And
Wherein, the rated power and those current sources for the current source which is electrically connected for the voltage-equalizing control circuit
Rated power power summation ratio.
11. power system according to claim 8, which is characterized in that those current sources are controlled by multiple controls
Electric current processed, each voltage-equalizing control circuit is to adjust one of those control electric currents by one of those correction signals
Current value, one of those current sources include:
One third computing circuit is electrically connected the corresponding voltage-equalizing control circuit, and the third computing circuit is to according to corresponding
The correction signal provided by voltage-equalizing control circuit adjusts the size of current of a reference current；And
One power supply module is electrically connected the third computing circuit, and the power supply module is to according to through the third operation
The reference current that the regulation of electrical circuit is crossed provides output electric current.
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