CN106549407A - The control method and equipment of the super capacitor in micro-capacitance sensor - Google Patents
The control method and equipment of the super capacitor in micro-capacitance sensor Download PDFInfo
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- CN106549407A CN106549407A CN201611234479.0A CN201611234479A CN106549407A CN 106549407 A CN106549407 A CN 106549407A CN 201611234479 A CN201611234479 A CN 201611234479A CN 106549407 A CN106549407 A CN 106549407A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/14—District level solutions, i.e. local energy networks
Abstract
The present invention provides a kind of control method and equipment of the super capacitor in micro-capacitance sensor, and the control method of the super capacitor includes：The real-time voltage and real-time current of detector unit detection micro-capacitance sensor bus；Realtime power calculates unit and is based on the real-time voltage and real-time current calculating active power and reactive power；Control of discharge unit discharges according to the active power and the Reactive Power Control super capacitor, to adjust the voltage of micro-capacitance sensor bus.Super capacitor is controlled using the control method of the super capacitor in micro-capacitance sensor according to an exemplary embodiment of the present invention, super capacitor can be given full play to and quickly start advantage, when micro-capacitance sensor occurs to fluctuate, busbar voltage can be made rapidly to recover normal, can preferably improve the quality of power supply.
Description
Technical field
The present invention relates to micro-capacitance sensor control field, in particular it relates to a kind of control method of the super capacitor in micro-capacitance sensor
And equipment.
Background technology
It is devoted to the construction of micro-capacitance sensor, and the electric energy for improving and producing during solving micro-grid connection at present both at home and abroad
Quality problems.Ultracapacitor can be stabilized transient swing, improve the quality of power supply, provides as a kind of power-type energy storage technology
Short-time energy, plays a very important role to stablizing micro-capacitance sensor.
Super capacitor is a kind of electrochemical element, and thermal energy storage process does not occur chemical reaction, and thermal energy storage process be it is reversible,
Therefore ultracapacitor repeated charge can reach hundreds thousand of times, and the life-span was up to more than 10 years, and did not resulted in environmental pollution.Separately
Outward, it has very high power density, is 10～100 times of battery, it is adaptable to short time high-power output, charging rate
Hurry up, pattern it is simple, large current charge can be adopted, charging process can be completed in several minutes at tens seconds, be truly
Quick charge.The electrochemical reaction occurred in charge and discharge process has good reversibility, and cryogenic property is superior, super capacitor
Occur in charge and discharge process electric charge transfer major part all carry out on electrode active material surface, capacity with temperature decay very
It is little.
It is unsatisfactory that the control strategy of the super capacitor role in terms of the quality of power supply is improved is applied at present.
The content of the invention
It is an object of the invention to provide the control method and equipment of a kind of super capacitor in micro-capacitance sensor, existing to solve
Control strategy in terms of the quality of power supply is improved the unsatisfactory technical problem of role.
A kind of control method of the super capacitor in micro-capacitance sensor, the super electricity are provided according to the first aspect of the invention
The control method of appearance includes：The real-time voltage and real-time current of detector unit detection micro-capacitance sensor bus；Realtime power calculates unit
Active power and reactive power are calculated based on the real-time voltage and the real-time current；Control of discharge unit is according to described active
Power and Reactive Power Control super capacitor electric discharge, to adjust the voltage of micro-capacitance sensor bus.
Alternatively, controlling the step of super capacitor discharges includes：Phase calculation unit is according to the active power, given
Active power, the rated frequency of micro-capacitance sensor calculate the phase angle of super capacitor output voltage；Voltage magnitude computing unit is according to described
Reactive power, given reactive power, the rated voltage of micro-capacitance sensor calculate the amplitude of super capacitor output voltage；Control of discharge list
Unit according to calculate super capacitor output voltage phase angle and amplitude come control super capacitor electric discharge, to adjust micro-capacitance sensor bus
Voltage.
Alternatively, the step of phase angle for calculating super capacitor output voltage, includes：Phase calculation unit is according to described active
The rated frequency of power, given active power and micro-capacitance sensor calculates frequency droop coefficient, and according to the frequency droop system for calculating
The rated frequency of number and micro-capacitance sensor calculates the phase angle of super capacitor output voltage.
Alternatively, the step of amplitude for calculating super capacitor output voltage, includes：Voltage magnitude computing unit is according to described
The rated voltage of reactive power, given reactive power and micro-capacitance sensor calculates the sagging coefficient of voltage, and according under the voltage for calculating
The rated voltage of vertical coefficient and micro-capacitance sensor calculates the amplitude of super capacitor output voltage.
Alternatively, according to calculate super capacitor output voltage phase angle and amplitude come control super capacitor electric discharge, with adjust
The step of voltage of section micro-capacitance sensor bus, includes：Phase angle and width of the voltage reference value computing unit based on super capacitor output voltage
Value calculates d axles reference voltage and q axle reference voltages；Control of discharge unit is anti-according to the d axles reference voltage and d axle positive sequence voltages
Feedback and the q axles reference voltage and q axles positive sequence voltage feedback calculate the positive-sequence component of space vector pulse width modulation, so that micro- electricity
Within rated range, the d axles positive sequence voltage feedback and the q axles positive sequence voltage feed back the positive-sequence component of the voltage of net bus
It is that the real-time voltage is carried out into positive-sequence component obtained from positive-negative sequence extraction；Control of discharge unit is anti-according to d axle negative sequence voltages
Feedback and q axles negative sequence voltage feed back the negative sequence component for calculating space vector pulse width modulation, for compensating the voltage of micro-capacitance sensor bus
And eliminate the negative sequence component of the voltage of micro-capacitance sensor bus, the d axles negative sequence voltage feedback and q axles negative sequence voltage feedback be by
The real-time voltage carries out negative sequence component obtained from positive-negative sequence extraction.
Alternatively, the step of calculating active power and reactive power includes：Realtime power calculates unit by the real-time electricity
Pressure and the real-time current carry out Clarke coordinate axess conversion and Parker's coordinate axess conversion, and according to Clarke coordinate axess conversion and
Real-time voltage and real-time current after the conversion of Parker's coordinate axess calculates the active power and the reactive power.
Alternatively, the control method of the super capacitor also includes：The electric charge of the storage of detector unit detection super capacitor
Whether amount is less than predetermined value；When the quantity of electric charge of super capacitor storage is less than the predetermined value, control unit control super capacitor
Stop electric discharge；When the quantity of electric charge of super capacitor storage is more than the predetermined value, detector unit perform detection micro-capacitance sensor is returned female
The step of real-time voltage and real-time current of line.
A kind of control device of super capacitor, the control device bag of the super capacitor are provided according to a further aspect in the invention
Include including：Detector unit, detects the real-time voltage and real-time current of micro-capacitance sensor bus；Realtime power calculates unit, based on described
Real-time voltage and the real-time current calculate active power and reactive power；Control of discharge unit, according to the active power and
The Reactive Power Control super capacitor electric discharge, to adjust the voltage of micro-capacitance sensor bus.
Alternatively, control of discharge unit includes：Phase calculation unit, according to the active power, given active power,
The rated frequency of micro-capacitance sensor calculates the phase angle of super capacitor output voltage；Voltage magnitude computing unit, according to the reactive power,
Given reactive power, the rated voltage of micro-capacitance sensor calculate the amplitude of super capacitor output voltage；Wherein, control of discharge unit root
Super capacitor electric discharge is controlled according to the phase angle and amplitude of the super capacitor output voltage for calculating, to adjust the electricity of micro-capacitance sensor bus
Pressure.
Alternatively, rated frequency of the phase calculation unit according to the active power, given active power and micro-capacitance sensor
Frequency droop coefficient is calculated, and super capacitor output electricity is calculated according to the rated frequency of the frequency droop coefficient and micro-capacitance sensor that calculate
The phase angle of pressure.
Alternatively, voltage magnitude computing unit is according to the specified of the reactive power, given reactive power and micro-capacitance sensor
Voltage calculates the sagging coefficient of voltage, and it is defeated to calculate super capacitor according to the rated voltage of the sagging coefficient of voltage and micro-capacitance sensor that calculate
Go out the amplitude of voltage.
Alternatively, control of discharge unit also includes：Voltage reference value computing unit, the phase based on super capacitor output voltage
Angle and amplitude calculate d axles reference voltage and q axle reference voltages；Wherein, control of discharge unit is according to the d axles reference voltage and d
Axle positive sequence voltage feedback and the q axles reference voltage and q axles positive sequence voltage feedback calculate the positive sequence of space vector pulse width modulation
Component, so that the positive-sequence component of the voltage of micro-capacitance sensor bus is within rated range, the d axles positive sequence voltage feeds back and the q
Axle positive sequence voltage feedback is that the real-time voltage is carried out positive-sequence component obtained from positive-negative sequence extraction；Control of discharge unit according to
D axles negative sequence voltage feeds back and q axles negative sequence voltage feeds back the negative sequence component for calculating space vector pulse width modulation, for compensating micro- electricity
The voltage of net bus and eliminate micro-capacitance sensor bus voltage negative sequence component, d axles negative sequence voltage feedback and the q axles negative phase-sequence
Voltage Feedback is that the real-time voltage is carried out negative sequence component obtained from positive-negative sequence extraction.
Alternatively, realtime power calculates unit and the real-time voltage and the real-time current is carried out Clarke coordinate axess turn
Change and change with Parker's coordinate axess, and according to the real-time voltage after the conversion of Clarke coordinate axess and the conversion of Parker's coordinate axess and electricity in real time
Active power described in stream calculation and the reactive power.
Alternatively, whether detector unit also detects the quantity of electric charge of the storage of super capacitor less than predetermined value；Work as super capacitor
When the quantity of electric charge of storage is less than the predetermined value, control unit control super capacitor stops electric discharge；When the electricity of super capacitor storage
When lotus amount is more than the predetermined value, detector unit continues the real-time voltage and real-time current of detection micro-capacitance sensor bus.
Super electricity is controlled using the control method of the super capacitor in micro-capacitance sensor according to an exemplary embodiment of the present invention
Hold, super capacitor can be given full play to and quickly start advantage, when micro-capacitance sensor occurs to fluctuate, busbar voltage can be made just rapidly to recover
Often, the quality of power supply can preferably be improved.
Additionally, the control method of the super capacitor in the micro-capacitance sensor of exemplary embodiment of the invention is super to control
Electric capacity, super capacitor controller have the function of plug and play, it is only necessary to change super according to the change of voltage on bus and frequency
The power output of level electric capacity itself, to stablize the voltage and frequency of bus.
Additionally, the control method of the super capacitor in the micro-capacitance sensor of exemplary embodiment of the invention is super to control
Electric capacity, because super capacitor is no and remaining distributed power source is communicated, eliminates communication time, without remaining master of collection
The power output of power supply, the collection for eliminating nearly 1 cycle calculate the time, can be than current super capacitor control mode speed more
Hurry up.
Additionally, the control method of the super capacitor in the micro-capacitance sensor of exemplary embodiment of the invention is super to control
Electric capacity, can allow super capacitor to enter linear operating region by arranging rational sagging coefficient.
The other aspect of the present invention and/or advantage will be partly illustrated in following description, some is by retouching
State and will be apparent, or the enforcement of the present invention can be passed through and be learnt.
Description of the drawings
By the detailed description for carrying out below in conjunction with the accompanying drawings, above and other objects of the present invention, feature and advantage will
Become more fully apparent, wherein：
Fig. 1 is the block diagram of the control device of the super capacitor of the micro-capacitance sensor of exemplary embodiment of the invention；
Fig. 2 is the flow chart of the control method of the super capacitor in the micro-capacitance sensor of exemplary embodiment of the invention；
Fig. 3 is that the realtime power of the control device of the super capacitor of exemplary embodiment of the invention calculates unit
Block diagram；
Fig. 4 is the example graph of the voltage droop control of exemplary embodiment of the invention；
Fig. 5 is the example graph of the frequency droop control of exemplary embodiment of the invention；
Fig. 6 is the frame of the phase calculation unit of the control device of the super capacitor of exemplary embodiment of the invention
Figure；
Fig. 7 is the voltage magnitude computing unit of the control device of the super capacitor of exemplary embodiment of the invention
Block diagram；
Fig. 8 is the voltage reference value computing unit of the control device of the super capacitor of exemplary embodiment of the invention
Block diagram；
Fig. 9 is the frame of the positive sequence voltage outer shroud with current inner loop Double-loop Control Strategy of exemplary embodiment of the invention
Figure；
Figure 10 is the negative sequence voltage outer shroud and current inner loop Double-loop Control Strategy of exemplary embodiment of the invention
Block diagram；
Figure 11 is the structured flowchart of the micro-capacitance sensor of exemplary embodiment of the invention；
Figure 12 is the current temporary state curve chart in the sensitive load cut process of exemplary embodiment of the invention；
Figure 13 is the voltage transient curve chart in the sensitive load cut process of exemplary embodiment of the invention.
Specific embodiment
As needed, it is disclosed the specific embodiment of the present invention；It will be understood, however, that the disclosed embodiments are only
It is the example of the present invention, wherein, the present invention can be realized with various alternative forms.Accompanying drawing is not necessarily to scale；Some are special
Levy and can be exaggerated or minimized the details of specific components is shown.Therefore, concrete structure disclosed herein and function detail should not
Be interpreted as having it is restricted, and only as instruct those skilled in the art in a variety of forms using the present invention representativeness
Basis.
Fig. 1 illustrates the block diagram of the control device of the super capacitor in the micro-capacitance sensor of exemplary embodiment of the invention.
As described in Figure 1, the control device of the super capacitor in the micro-capacitance sensor of exemplary embodiment of the invention includes detector unit
101st, realtime power calculates unit 102, control of discharge unit 103.
The real-time voltage and real-time current of the detection micro-capacitance sensor bus of detector unit 101.Realtime power calculates unit 102 and is based on
The real-time voltage and the real-time current calculate active power and reactive power.Control of discharge unit 103 is according to described active
Power and Reactive Power Control super capacitor electric discharge, to adjust the voltage of micro-capacitance sensor bus.Control of discharge unit 103 can be wrapped
Include phase calculation unit, voltage magnitude computing unit and reference voltage level computing unit.
Describe in detail hereinafter with reference to Fig. 2 to Figure 10 super in the micro-capacitance sensor of exemplary embodiment of the invention
The unit that the control device of electric capacity includes.
Fig. 2 is the flow chart of the control method of the super capacitor in the micro-capacitance sensor of exemplary embodiment of the invention.
As shown in Fig. 2 in step S201, the real-time voltage and real-time current of the detection micro-capacitance sensor bus of detector unit 101.
In step S202, realtime power calculates unit 102 and calculates active based on the real-time voltage and the real-time current
Power and reactive power.
Fig. 3 is the block diagram that the realtime power of exemplary embodiment of the invention calculates unit 102.In step S202,
Realtime power calculates unit 102 and carries out the conversion of Clark coordinate axess and Park coordinates respectively to real-time voltage value and real-time current value
Axle is changed, and subsequently calculates the active power on micro-capacitance sensor bus according to the real-time voltage value and real-time current value after coordinate axess conversion
And reactive power.
In step S203, control of discharge unit 103 is according to the active power and the Reactive Power Control super capacitor
Electric discharge, to adjust the voltage of micro-capacitance sensor bus.
In step S203, super capacitor can be controlled using droop control, so as to compensate the voltage of micro-capacitance sensor bus.
Fig. 4 is the example graph of the voltage droop control of exemplary embodiment of the invention.Fig. 5 is according to this
The example graph of the frequency droop control of the exemplary embodiment of invention.
As shown in figure 4, when busbar voltage is higher than standard value (that is, rated voltage) V0When, super capacitor can absorb idle work(
Rate, so that voltage is reduced to standard value V0.When busbar voltage is less than standard value V0When, super capacitor can send reactive power, from
And make voltage be increased to standard value V0。
If micro-grid system breaks down, voltage decline abruptly to V1, the running status of system will be by A dot crawls to B
Point, will now send more reactive power supporting bus voltages.Droop control is by sending reactive power compensation bus electricity
Pressure, and keep the balance of voltage.Describe in detail by droop control to control super capacitor to compensate bus hereinafter with reference to accompanying drawing
The mode of voltage.
Fig. 6 is the block diagram of the phase calculation unit of exemplary embodiment of the invention.Fig. 7 is of the invention showing
The block diagram of the voltage magnitude computing unit of example property embodiment.
Fig. 6 illustrates that phase calculation unit calculates the block diagram of phase angle.Phase calculation unit can be according to the active power, given
Active power, micro-capacitance sensor rated frequency calculate super capacitor output voltage phase angle.With reference to Fig. 6, given active power
Active power value of the value as corresponding to state A in Fig. 5.Frequency droop coefficient is the signal of the frequency droop control shown in Fig. 5
The slope of linearity curve figure, as Δ f/ Δs P.Next, can be according to the active power, given active power and micro-capacitance sensor
Rated frequency calculates frequency droop coefficient.Subsequently, 2 π × (50- frequency droop coefficients) exports phase angle via integral element.It is described
The phase calculation of droop control does not have phaselocked loop link, will not be affected by the frequency signal of bus when phase angle is calculated, but be made
With given frequency (such as 50Hz) by integral element outputting standard phase angle.
Fig. 7 shows that voltage magnitude computing unit calculates the block diagram of voltage magnitude.Voltage magnitude computing unit can be according to institute
State the amplitude that reactive power, given reactive power, the rated voltage of micro-capacitance sensor calculate super capacitor output voltage.With reference to Fig. 7,
Reactive power value of the given reactive power value as corresponding to state A in Fig. 4.The sagging coefficient of voltage is the voltage shown in Fig. 4
The slope of the example graph of droop control, as Δ V/ Δs Q.Next, can be according to the reactive power, previously given
The rated voltage of reactive power and micro-capacitance sensor calculates the sagging coefficient of voltage.Voltage magnitude is mainly according to rated voltage V0To determine,
That is the voltage magnitude of voltage droop control output is fluctuated near rated voltage up and down.
Therefore, in step S203, control of discharge unit 103 can according to calculate super capacitor output voltage phase angle and
Amplitude come control super capacitor electric discharge, to adjust the voltage of micro-capacitance sensor bus.
Fig. 8 is the block diagram of the voltage reference value computing unit of exemplary embodiment of the invention.Voltage reference value meter
Unit is calculated according to the output phase angle, output phase angle, output+2/3 π of phase angle, the cosine value of output -2/3 π of phase angle is calculated respectively,
And be multiplied with the output voltage amplitude respectively, product is carried out into the conversion of Clarke (Clark) coordinate axess and Parker (Park) sits
D axles reference voltage and q axle reference voltages are drawn respectively after parameter conversion.
Fig. 9 is the frame of the positive sequence voltage outer shroud with current inner loop Double-loop Control Strategy of exemplary embodiment of the invention
Figure.In the control strategy, the real-time voltage to detecting carries out positive sequence extraction, obtains d axles positive sequence voltage feedback VpdWith q axles just
Sequence voltage feeds back Vpq, and drawn for space vector pulse width modulation by Double-loop Control Strategy and the conversion of anti-Park coordinate axess
(SVPWM) two cordic phase rotator component of positive sequence.
Figure 10 is the negative sequence voltage outer shroud and current inner loop Double-loop Control Strategy of exemplary embodiment of the invention
Block diagram.In the control strategy, the real-time voltage to detecting carries out negative phase-sequence extraction, obtains d axles positive sequence voltage feedback VndWith q axles
Positive sequence voltage feeds back Vnq, and drawn for space vector pulse width modulation by Double-loop Control Strategy and the conversion of anti-Park coordinate axess
(SVPWM) two cordic phase rotator component of negative phase-sequence.
In other words, with reference to Fig. 9 and Figure 10, control of discharge unit can be according to d axles reference voltage and d axles positive sequence voltage and q
Axle reference voltage and q axles positive sequence voltage feedback calculate the positive-sequence component of space vector pulse width modulation, so that the electricity of micro-capacitance sensor bus
The positive-sequence component of pressure is within rated range.Here, d axles positive sequence voltage feedback and q axles positive sequence voltage feedback are by real-time voltage
Carry out positive-sequence component obtained from positive-negative sequence extraction.Additionally, control of discharge unit can be born according to d axles negative sequence voltage feedback and q axles
Sequence voltage feedback calculates the negative sequence component of space vector pulse width modulation, for compensating the voltage of micro-capacitance sensor bus and eliminating micro- electricity
The negative sequence component of the voltage of net bus.Here, d axles negative sequence voltage feedback and q axles negative sequence voltage feedback are to carry out real-time voltage
Negative sequence component obtained from positive-negative sequence extraction.
Two cordic phase rotator component of positive sequence and two cordic phase rotator component of negative phase-sequence for SVPWM can be to Voltage unbalance
Compensate, the positive-sequence component of system voltage is made within preset range, and the negative sequence component of bucking-out system voltage.
Selectively, in order to prevent super capacitor over-discharge, the life-span of super capacitor, the control of the super capacitor are improved
Method processed can also include the steps of：Whether the quantity of electric charge of the storage of the detection super capacitor of detector unit 101 is less than predetermined value；When
When the quantity of electric charge of super capacitor storage is less than the predetermined value, control unit control super capacitor stops electric discharge；Work as super capacitor
When the quantity of electric charge of storage is more than the predetermined value, the real-time voltage and reality of 101 perform detection micro-capacitance sensor bus of detector unit are returned
When electric current the step of.
As described above, during micro-capacitance sensor runs, the voltage and current of real-time monitoring bus, while according to Fig. 2 extremely
Control method control super capacitor electric discharge described by Figure 10, compensates to the voltage of bus.
The technique effect of the present invention is described below with reference to Figure 11 to Figure 13.
Figure 11 is the block diagram of the micro-capacitance sensor of exemplary embodiment of the invention.Exemplary embodiment of the invention
Micro-capacitance sensor may include super capacitor 10, super capacitor current transformer 11, super capacitor transformator 12, super capacitor switch 13, liquid
Galvanic battery 20, flow battery current transformer 21, flow battery transformator 22, flow battery switch 23, important load 30, photovoltaic plant
40th, photovoltaic plant current transformer 41, photovoltaic plant transformator 42, photovoltaic plant switch 43, sensitive loads 50, sensitive loads switch
51。
Flow battery of the micro-capacitance sensor shown in Figure 11 from 200KW/4h, the super capacitor of 200KW/10s, the light of 150KW
Overhead utility.Important load of the load from 75KW, the sensitive loads of 12KW.
Control method according to an exemplary embodiment of the present invention and existing is respectively adopted to the super capacitor in Figure 11
Control method gathers the voltage and current of the bus when the sensitive loads 51 of the 12KW in Figure 11 start suddenly respectively controlling.
Figure 12 and Figure 13 are shown respectively the current temporary state curve chart in 51 cut process of sensitive loads and voltage transient curve
Figure.In fig. 12, block curve represents using control method according to an exemplary embodiment of the present invention to control super capacitor
Current temporary state curve chart, the current temporary state curve chart that dashed curve represents using existing control method to control super capacitor,
It can be recognized from fig. 12 that super capacitor is controlled using control method according to an exemplary embodiment of the present invention, it is all through two
Ripple bus current can recover normal, and the control method for adopting is needed through six cycle buses electricity controlling super capacitor
Stream can just recover normal.In fig. 13, block curve represents using control method according to an exemplary embodiment of the present invention to control
The voltage transient curve chart of super capacitor processed, the voltage that dashed curve represents using existing control method to control super capacitor
Transient state curve chart, as can be seen from Figure 13, controls super capacitor using control method according to an exemplary embodiment of the present invention,
Can recover normal through a cycle busbar voltage, and the control method for adopting is needed through nine controlling super capacitor
Cycle busbar voltage can just recover normal.
Can be seen that in load changing from Figure 12 and Figure 13, using controlling party according to an exemplary embodiment of the present invention
Method controlling super capacitor, than using existing control method, more giving full play to super capacitor and quickly start advantage, mother can be made
Line voltage is more quickly restored normally, can preferably improve the quality of power supply.
Additionally, the control method of the super capacitor in the micro-capacitance sensor of exemplary embodiment of the invention is super to control
Electric capacity, super capacitor controller have the function of plug and play, it is only necessary to change super according to the change of voltage on bus and frequency
The power output of level electric capacity itself, to stablize the voltage and frequency of bus.
Additionally, the control method of the super capacitor in the micro-capacitance sensor of exemplary embodiment of the invention is super to control
Electric capacity, because super capacitor is no and remaining distributed power source is communicated, eliminates communication time, without remaining master of collection
The power output of power supply, the collection for eliminating a nearly cycle calculate the time, can be than current super capacitor control mode speed
Faster.
Additionally, the control method of the super capacitor in the micro-capacitance sensor of exemplary embodiment of the invention is super to control
Electric capacity, can allow super capacitor to enter linear operating region by arranging rational sagging coefficient.
Although the foregoing describing exemplary embodiment, these embodiments are not intended to the be possible to shape for describing the present invention
Formula.More precisely, the word used in description is descriptive words and non-limiting word, and it should be understood that can
Various changes are made without departing from the spirit and scope of the present invention.Additionally, can be by the spy of the embodiment of various realizations
Levy and be combined to form further embodiment of the invention.
Claims (14)
1. the control method of the super capacitor in a kind of micro-capacitance sensor, it is characterised in that the control method of the super capacitor includes：
The real-time voltage and real-time current of detector unit detection micro-capacitance sensor bus；
Realtime power calculates unit and is based on the real-time voltage and real-time current calculating active power and reactive power；
Control of discharge unit discharges according to the active power and the Reactive Power Control super capacitor, female to adjust micro-capacitance sensor
The voltage of line.
2. the control method of super capacitor according to claim 1, it is characterised in that the step of control super capacitor discharges
Including：
Phase calculation unit calculates super capacitor according to the rated frequency of the active power, given active power, micro-capacitance sensor
The phase angle of output voltage；
Voltage magnitude computing unit calculates super according to the rated voltage of the reactive power, given reactive power, micro-capacitance sensor
The amplitude of electric capacity output voltage；
Control of discharge unit according to calculate super capacitor output voltage phase angle and amplitude come control super capacitor electric discharge, with adjust
The voltage of section micro-capacitance sensor bus.
3. the control method of super capacitor according to claim 2, it is characterised in that calculate super capacitor output voltage
The step of phase angle, includes：Rated frequency of the phase calculation unit according to the active power, given active power and micro-capacitance sensor
Frequency droop coefficient is calculated, and super capacitor output electricity is calculated according to the rated frequency of the frequency droop coefficient and micro-capacitance sensor that calculate
The phase angle of pressure.
4. the control method of super capacitor according to claim 2, it is characterised in that calculate super capacitor output voltage
The step of amplitude, includes：Voltage magnitude computing unit is specified according to the reactive power, given reactive power and micro-capacitance sensor
Voltage calculates the sagging coefficient of voltage, and it is defeated to calculate super capacitor according to the rated voltage of the sagging coefficient of voltage and micro-capacitance sensor that calculate
Go out the amplitude of voltage.
5. the control method of super capacitor according to claim 2, it is characterised in that according to the super capacitor output for calculating
The phase angle and amplitude of voltage includes the step of to adjust the voltage of micro-capacitance sensor bus controlling super capacitor electric discharge：
Phase angle of the voltage reference value computing unit based on super capacitor output voltage and amplitude calculate d axles reference voltage and q axles ginseng
Examine voltage；
Control of discharge unit is fed back and the q axles reference voltage and q axles according to the d axles reference voltage and d axles positive sequence voltage
Positive sequence voltage feedback calculates the positive-sequence component of space vector pulse width modulation, so that the positive-sequence component of the voltage of micro-capacitance sensor bus is in volume
Within the scope of fixed, the d axles positive sequence voltage feedback and q axles positive sequence voltage feedback are that the real-time voltage is carried out positive-negative sequence
Positive-sequence component obtained from extraction；
Control of discharge unit feeds back according to d axles negative sequence voltage feedback and q axles negative sequence voltage and calculates the negative of space vector pulse width modulation
Order components, for compensate micro-capacitance sensor bus voltage and eliminate micro-capacitance sensor bus voltage negative sequence component, the d axles negative phase-sequence
Voltage Feedback and q axles negative sequence voltage feedback are that the real-time voltage is carried out negative sequence component obtained from positive-negative sequence extraction.
6. the control method of super capacitor according to claim 1, it is characterised in that calculate active power and reactive power
The step of include：Realtime power calculate unit by the real-time voltage and the real-time current carry out Clarke coordinate axess conversion and
Parker's coordinate axess are changed, and according to the real-time voltage and real-time current meter after the conversion of Clarke coordinate axess and the conversion of Parker's coordinate axess
Calculate the active power and the reactive power.
7. the control method of super capacitor according to claim 1, it is characterised in that the control method of the super capacitor
Also include：
Whether the quantity of electric charge of the storage of detector unit detection super capacitor is less than predetermined value；
When the quantity of electric charge of super capacitor storage is less than the predetermined value, control unit control super capacitor stops electric discharge；
When the quantity of electric charge of super capacitor storage is more than the predetermined value, the reality of detector unit perform detection micro-capacitance sensor bus is returned
When voltage and the step of real-time current.
8. the control device of the super capacitor in a kind of micro-capacitance sensor, it is characterised in that the control device of the super capacitor includes：
Detector unit, detects the real-time voltage and real-time current of micro-capacitance sensor bus；
Realtime power calculates unit, calculates active power and reactive power based on the real-time voltage and the real-time current；
Control of discharge unit, discharges according to the active power and the Reactive Power Control super capacitor, to adjust micro-capacitance sensor
The voltage of bus.
9. the control device of super capacitor according to claim 8, it is characterised in that control of discharge unit includes：
Phase calculation unit, calculates super capacitor according to the rated frequency of the active power, given active power, micro-capacitance sensor
The phase angle of output voltage；
Voltage magnitude computing unit, calculates super according to the rated voltage of the reactive power, given reactive power, micro-capacitance sensor
The amplitude of electric capacity output voltage；
Wherein, control of discharge unit is put controlling super capacitor according to the phase angle and amplitude of the super capacitor output voltage for calculating
Electricity, to adjust the voltage of micro-capacitance sensor bus.
10. the control device of super capacitor according to claim 9, it is characterised in that phase calculation unit is according to described
The rated frequency of active power, given active power and micro-capacitance sensor calculates frequency droop coefficient, and according under the frequency for calculating
The rated frequency of vertical coefficient and micro-capacitance sensor calculates the phase angle of super capacitor output voltage.
The control device of 11. super capacitors according to claim 9, it is characterised in that voltage magnitude computing unit according to
The rated voltage of the reactive power, given reactive power and micro-capacitance sensor calculates the sagging coefficient of voltage, and according to the electricity for calculating
The rated voltage of the vertical coefficient of pressure and micro-capacitance sensor calculates the amplitude of super capacitor output voltage.
The control device of 12. super capacitors according to claim 9, it is characterised in that control of discharge unit also includes：
Voltage reference value computing unit, the phase angle and amplitude based on super capacitor output voltage calculate d axles reference voltage and q axles ginseng
Examine voltage；
Wherein, control of discharge unit is fed back and the q axles reference voltage according to the d axles reference voltage and d axles positive sequence voltage
The positive-sequence component for calculating space vector pulse width modulation is fed back with q axles positive sequence voltage, so that the positive sequence of the voltage of micro-capacitance sensor bus point
Within rated range, the d axles positive sequence voltage feedback and q axles positive sequence voltage feedback are to carry out the real-time voltage to amount
Positive-sequence component obtained from positive-negative sequence extraction；
Control of discharge unit feeds back according to d axles negative sequence voltage feedback and q axles negative sequence voltage and calculates the negative of space vector pulse width modulation
Order components, for compensate micro-capacitance sensor bus voltage and eliminate micro-capacitance sensor bus voltage negative sequence component, the d axles negative phase-sequence
Voltage Feedback and q axles negative sequence voltage feedback are that the real-time voltage is carried out negative sequence component obtained from positive-negative sequence extraction.
The control device of 13. super capacitors according to claim 8, it is characterised in that realtime power calculates unit by institute
Stating real-time voltage and the real-time current carries out the conversion of Clarke coordinate axess and the conversion of Parker's coordinate axess, and according to Clarke coordinate
Real-time voltage and real-time current after axle is changed and Parker's coordinate axess are changed calculates the active power and the reactive power.
The control device of 14. super capacitors according to claim 8, it is characterised in that detector unit also detects super electricity
Whether the quantity of electric charge of the storage of appearance is less than predetermined value；When the quantity of electric charge of super capacitor storage is less than the predetermined value, control is single
Unit's control super capacitor stops electric discharge；When the quantity of electric charge of super capacitor storage is more than the predetermined value, detector unit continues inspection
The real-time voltage and real-time current of micrometer electrical network bus.
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