CN107078641B - Power supply device - Google Patents
Power supply device Download PDFInfo
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- CN107078641B CN107078641B CN201580052051.1A CN201580052051A CN107078641B CN 107078641 B CN107078641 B CN 107078641B CN 201580052051 A CN201580052051 A CN 201580052051A CN 107078641 B CN107078641 B CN 107078641B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/66—Applications of electricity supply techniques
- B03C3/68—Control systems therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Electrostatic Separation (AREA)
Abstract
Detection is directed to load (I, II output voltage (V) and output electric current (I)), and the output voltage (V) and output electric current (I) that will test out are supplied to main control unit (5), to the duty ratio control for control for the PWM of separated exciting converting means by the CPU (9), and, CPU (9) uses the machine characteristic curve, the attraction subfunction (R) uniquely determined to the shape by two-dimentional output characteristics, substitute into detected output voltage (V) and output electric current (I), according to the output voltage (V) and scheduled reference voltage (V for using attraction subfunction (R) at this time0) difference and output electric current (I) and scheduled reference current (I0) difference when sign symbol, every the duty ratio that the set time controls to the direction increase and decrease for attracting subfunction (R) to concentrate for PWM, wherein, the machine characteristic curve indicate as output voltage (V) and export electric current (I) pair two-dimentional relation, and the two-dimensional relationship of output voltage (V) and output electric current (I) when indicating to intersect with two-dimentional output characteristics as a purpose, and duty ratio being fixed as constant.
Description
Technical field
The present invention relates to power supply devices, more particularly to the device of electrostatic (electric dust) precipitator for being applicable to high voltage etc..
Background technique
In the high-voltage power apparatus of electrostatic (electric dust) precipitator, it is desirable that distinctive output characteristics.That is, electrostatic (electric dust) precipitator is by passing through corona
The dust collecting part (collector) in charge portion (ionizer) and particle entrapment that electric discharge charges particle is constituted, as a result, in order to true
Particle charging amount when ion passes through is protected, certain corona discharge current is needed.In addition, dust collecting part is in order to ensure dust collection efficiency,
Need certain dust collecting part voltage.
But in the case where observing the electrode of electrical dust exhaust apparatus as the load of high voltage power supply, born with common
The case where lotus, is compared, feature be through when amplitude of fluctuation it is big, the state with the movement of this 1 point of voltage rating/rated current is hardly
Use the initial stage of electrode.In actual use, it is piled up in dust collecting port as dust, mist of dust suction object etc., also, in charge
The discharge electrode in portion, electrode support sector etc. are attached with dirt.Thus, it is difficult to corona discharge be caused by charge portion, for tieing up
The voltage for holding discharge current is got higher.On the other hand, in dust collecting part, Leakage Current increases, and terminal voltage slightly declines.
In order to maintain dust collection efficiency in the variation of the dust suction condition, charge portion requires the power supply of constant-current characteristics, dust collecting part
It is required that the power supply of constant-voltage characteristic.Moreover, being used continuously during electrode fouling use, whichever is required to maintenance at the moment
Can, therefore, output is more than at 1 point, and the output characteristics of the high voltage power supply of electric vacuum cleaner requires opposite with the variation of voltage/current
The characteristic (two-dimensional characteristics) for the function answered.
In turn, when in order to maintain a constant current and unlimitedly improve voltage, the part other than supporting part cannot
Insulation is maintained, therefore, it is also desirable to the limitation of certain degree.In addition, when in order to maintain certain voltage and unlimitedly flow through electric current, by
In Joule heat etc. generation and be possible to generate smoke be under fire, be equally also required to limitation dust collecting part electric current.Additional such characteristic
And the output characteristics that electric dust-absorbing apparatus is easiest to play the high voltage power supply of performance is to indicate case on the two-dimensional surface of voltage/current
The constant voltage/constant current characteristic of type shape.Here, so-called box shape includes increasing from zero to maximum in the output electric current I of X-direction
Voltage maintains scheduled constant pressure during value, reaches the time point of maximum value in electric current, even if the output voltage V of Y direction increases
The point of the powered down maximum value for flowing two sides for also maintaining the characteristic of a scheduled constant current to indicate voltage and current.About the box shape
The output characteristics of shape is described in detail in back (referring to Fig. 9) together with embodiment.
On the other hand, the high-voltage power apparatus as this prior art, such as have disclosed interior in patent document 1
Hold.This be using ringing choke circle converter as typical example, it is net in electrostatic (electric dust) precipitator or air with the high voltage power supply of self-excited oscillation type
Change and used in device, forms the analog circuit of oscillating circuit using the signal fed back from tertiary coil.
But in patent document 1, there are frequency of oscillation numbers changes because of temperature, causes to enter auditory field because of condition
Abnormal oscillation or nonoscillatory and there is no the problems such as High voltage output when ambient temperature is too low.The current/voltage of output indicates institute
" Off " word characteristic of meaning, but in order to obtain constant voltage/constant current characteristic, it is respectively necessary for control component, circuit block number also increases,
The principal element improved as cost.In addition, also must even if the specification minimum relative to output voltage/output electric current changes
It need determine to trial and error each component constant, not only exploitation needs the time, and there is also can not correspond at once when specification change.
On the other hand, it has used the separated exciting high voltage power supply of application-specific integrated circuit and has used microcomputer, institute in such as patent document 2
In the high voltage power supply shown, Isobarically Control or current constant control are carried out with PWM control (pulse width control), is obtained it can however not reaching
Obtain the function control of two-dimensional characteristics.Therefore, identical as patent document 1, it is respectively necessary for control component, circuit block number also increases
Add, become the principal element of increased costs, even and if there is also the specification minimum relative to output voltage/output electric current change,
The problems such as not only each component constant determines to expend the time, but also when specification changes can not correspond at once.
As in addition associated known document, there are patent document 3 (Japanese Unexamined Patent Publication 2003-143845 bulletin), specially
Sharp document 4 (Japanese Unexamined Patent Publication 2003-199338 bulletin), patent document 5 (Japanese Unexamined Patent Publication 2008-109820 bulletin) etc..
These documents carry out the control of output target value, still, do not disclose or even enlighten concept (the two dimension output of function control
Characteristic).In addition, the shape of output characteristics is important in electrostatic (electric dust) precipitator, still, also the shape of output characteristics is not made
For the elaboration of problem, in turn, also there is no the methods for changing output characteristics at high speed, continuously in operation.
Existing technical literature
Patent document
Patent document 1: 2002-No. 273267 bulletins of Japanese Unexamined Patent Publication
Patent document 2: Japanese Unexamined Patent Publication 2000-156373 bulletin
Patent document 3: Japanese Unexamined Patent Publication 2003-143845 bulletin
Patent document 4: Japanese Unexamined Patent Publication 2003-199338 bulletin
Patent document 5: Japanese Unexamined Patent Publication 2008-109820 bulletin
Summary of the invention
Problems to be solved by the invention
The present invention is developed in view of the prior art, it is intended that providing a kind of power supply device, passes through letter
Number control can more easily realize the arbitrary two-dimentional output characteristics of output voltage/electric current, can be highly suitable for electric precipitation
Device.
Means for solving the problems
It realizes that the first method of the present invention of the purpose provides a kind of power supply device, consist of while detecting for load
Output voltage V and output electric current I, and the output voltage V that will test out and output electric current I are supplied to control unit, thus
The duty ratio control for the PWM control based on the separated exciting converting means connecting with the load is carried out by described control unit
System, which is characterized in that
The control device uses the machine characteristic curve, the attractor letter uniquely determined to the shape by two-dimentional output characteristics
Number R substitutes into detected the output voltage V and output electric current I simultaneously, according to the attraction subfunction used at this time
The output voltage V and scheduled reference voltage V0Difference and the output electric current I and scheduled reference current I0Difference when
Sign symbol, every direction from the set time to the attractor collection of functions increase and decrease for the PWM control duty ratio,
Dynamic control is carried out in a manner of across scheduled voltage/current curve, wherein the machine characteristic curve is indicated as the output electricity
Press the V and output electric current I pair two-dimentional relation, and indicate to intersect with two-dimentional output characteristics as a purpose, and will account for
Sky is more constant than being fixed as, the output voltage V obtained and output electric current I when load resistance being made to change from zero to infinity
Two-dimensional relationship.
According to the method, by that subfunction will be attracted independent or appropriately combined multiple, arbitrary two can be easily produced
Tie up output characteristics.
In addition, attraction subfunction of the invention defines as follows.That is, be the common attribute as attraction subfunction R, including
Output voltage V as target value0Value and output electric current I0Value, the value of the output voltage V as measured value and output electric current
The value of I is set via A/D converter and is taken into CPU simultaneously, then indicates that it is good for either one or two of rising or falling processing
Evaluation function in program, is also indicated with expression of first degree and quadratic expression sometimes, still, also sometimes with the logical formulas table such as NOR/NAND
It is existing.Its control result is, either which load resistance, all in a manner of concentrating to the curve of output as target value
Reason.But because being directed toward dynamic equilibrium simultaneously, small variations are repeated while crossing over target output always, to
Target value, which is concentrated and is also not, is stable at fixed value with stringent meaning.The acquirement of these situations is easy quick for the variation of load
The effect of ground response becomes indispensable characteristic for Two dimensional control.
The power supply device of the 2nd aspect of the present invention is on the basis of first method, which is characterized in that
Only relative to the reference voltage V0The output voltage V difference and relative to the reference current I0Institute
When stating this poor both sides of output electric current I and being negative, the duty ratio is made to rise 1, it is in addition to this, real every the set time
The control of decline 1 is applied, so that the two-dimentional output characteristics be made to become box two dimension constant voltage/constant current output characteristics.
According to the method, box two dimension constant voltage/constant current output characteristics can be easily produced.
The power supply device of the 3rd aspect of the present invention is on the basis of first method, which is characterized in that
It is special for straight incline voltage to implement the two-dimentional output characteristics obtained control as follows every the set time
Property: the attraction subfunction R=V indicated with expression of first degree0I+I0V-V0I0In, decline 1 in duty ratio control in the case where R > 0
Position rises 1 in duty ratio control in the case where R < 0, and the control of state in the case where R=0 before continuation
System.
According to the method, the straight incline voltage characteristic of two-dimentional output characteristics can be easily produced.
The power supply device of the 3rd aspect of the present invention is on the basis of first method, which is characterized in that
Control based on described control unit and the two-dimentional output characteristics generated, indicate when below scheduled electric current
Constant-voltage characteristic, the low constant pressure of voltage drop/tilt voltage characteristic while increase when being more than the range of the electric current for electric current.
According to the method, the two-dimentional output characteristics of constant pressure/tilt voltage characteristic can be easily produced.
Invention effect
According to the present invention, it is controlled by the duty ratio that control unit carries out separated exciting converting means, it is instantaneous defeated by inputting
The attraction subfunction of the information of the value of voltage and output electric current can be realized high voltage power supply required for the loads such as electrostatic (electric dust) precipitator out
Voltage/current arbitrary two-dimentional output characteristics.At this moment, it can be set to the component of necessary irreducible minimum to realize significantly cost
It reduces, the characteristic freely converted according to output characteristics, in the case where being carried to the electrostatic (electric dust) precipitator as load, especially generating should
Feature.That is, can be realized the inhibition of spark discharge itself, the elimination of ignitability electric discharge, the succession, long-term that ensures dust suction operating
Operating.
Detailed description of the invention
Fig. 1 is the block diagram for indicating the power supply device of embodiments of the present invention；
Fig. 2 is the scheduled reference voltage V indicated by generating two-dimentional output characteristics0And reference current I0The region of segmentation
Explanatory diagram；
Fig. 3 is the performance plot for indicating the characteristic an example of the machine；
Fig. 4 is the figure for indicating various attractors, and (a) is the explanatory diagram for indicating constant pressure line attractor, is (b) to indicate constant-current contour
The explanatory diagram of attractor is (c) explanatory diagram for indicating box attractor, is (d) explanatory diagram for indicating L-type attractor；
Fig. 5 is the explanatory diagram for indicating to be formed the attraction subfunction of two-dimentional output characteristics of apsacline；
Fig. 6 is the performance plot for indicating to be formed the attraction subfunction of Parabolic two-dimentional output characteristics；
Fig. 7 is the performance plot for indicating to be formed the attraction subfunction of two-dimentional output characteristics of hyperbolic-type；
Fig. 8 is the performance plot for indicating the two-dimentional output characteristics of apsacline；
Fig. 9 is the performance plot for indicating the two-dimentional output characteristics of box；
Figure 10 is the performance plot for indicating the two-dimentional output characteristics of invariable power.
Specific embodiment
Hereinafter, explaining embodiments of the present invention in detail based on attached drawing.
Fig. 1 is the block diagram for indicating the power supply device of embodiments of the present invention.The power supply device of the method has electric precipitation
The charge portion of device and dust collecting part are as load I, II.However, it is not necessary to which load is defined in charge portion and dust collecting part.As long as will cut
The output transformer of wave device boosts and obtains the purposes of high voltage, it will be able to play same effect/effect.
In addition, the power supply device of the method has separated exciting converting means.It more specifically, will be by from source power supply 50/
The exchange of 60Hz is temporarily transformed to the rectifier smoothing circuit of direct current or the DC voltage benefit of DC power supply application (not shown in Fig. 1)
Switch element, that is, field effect transistor (field effect of switch motion is carried out to frequency 20kHz~100kHz
Transistor) Tr carries out copped wave and is applied to step-up transformer 1.Step-up transformer 1 has for obtaining scheduled high voltage
Primary and secondary coil, resonant capacitor C has been connected in parallel on its primary coil 1A0.In addition, on secondary coil 1B
It is connected with the rectification multiple pressuring circuit 2 that secondary voltage is transformed into direct current.In this way, will by be boosted transformer 1 boosting and it is whole
The scheduled DC high voltage that stream voltage-multiplying circuit 2 is rectified and generated is applied to load I (charge portion) and load II (dust collecting part).?
This, applies the voltage after being depressured to the application voltage of load I to load II via resistance R1, R2 of voltage division.This
It is in order to consistent with the voltage rating of the two.
Voltage detecting circuit 3 detects the voltage that applies to load I, by the voltage signal S1 of the voltage value of expression at this time via
Operational amplifier 4 is sent out to main control unit 5.On the other hand, current detection circuit 6 is detected to load I and load II supply
Electric current sends out the current signal S2 of the current value of expression at this time via operational amplifier 7 to main control unit 5.
Main control unit 5 has A/D converter 8, CPU9, PWM signal generation section 10.Here, A/D converter 8 is by conduct
The voltage signal S1 and current signal S2 of analog signal are transformed into digital signal and supply to CPU9.CPU9 will be based on voltage signal
The digital signal of S1 and current signal S2 are handled as predetermined, raw via pwm signal to determine the duty ratio (duty) of PWM
The pwm signal S3 (about the signal processing in CPU9, followed by detailed narration) with scheduled duty ratio is generated at portion 10.
Switching circuit 11 is based on pwm signal S3 and is turned on/off (ON/OFF) control to field effect transistor Tr at predetermined intervals.
In this way, while connecting the power supply of the power supply device, the CPU9 of main control unit 5 rise and enter initial rise into
Journey (routine).At this point, field effect transistor Tr becomes cut-off, electric current does not flow through step-up transformer 1.
On the other hand, in CPU9, T1 detects the electricity based on the monitor obtained by monitoring circuit at regular intervals
The voltage and current values of signal (VDD signal) S1 and current signal (IDD signal) S2 are pressed, while if not reaching target electricity
Pressure, then duty ratio rises 1 (digit) every time.In the method, it is set as T1=10msec, however, if necessary can also be into one
Step shortens the time.In addition, every improve 1, duty ratio increases by 1/400 (=0.25%).
In this approach, if into initial rise process, usually end from the primary current of step-up transformer 1 and open
Begin in the case where the high-voltage power apparatus of electrostatic (electric dust) precipitator, it can be particularly like.There is a situation where that any load is abnormal
Under, a variety of situations are assumed to be overcurrent, load short circuit etc., and initial rise process can be entered after abnormality detection, is easy to migrate
To next processing.
The output voltage V and output electric current I of the power supply device at every moment changed are via voltage detecting circuit 3 and electric current
Detection circuit 6 is introduced into CPU9.Here, considering horizontal axis being set as electric current I, the longitudinal axis being set as to the two-dimensional surface of voltage V.Such as Fig. 2
It is shown, based on the specified equal pre-determined scheduled reference voltage V according to the electrostatic (electric dust) precipitator0, reference current I0By above-mentioned two dimension
When plane is divided into 4 regions, the output voltage V in the region (1) of upper right is always than reference voltage V0Height, output electric current I compare always
Reference current I0Greatly.Then, using output voltage V and reference voltage V0Difference, output electric current I and reference current I0Difference when,
In region (1), (V-V0) and (I-I0) be positive.Table 1 indicates the investigation in region (2), (3), (4) with same method
(V-V0) and (I-I0) positive and negative result.
[table 1]
| Region | V-V0 | I-I0 | CPU processing |
| ① | Just | Just | Rise or valence declines this 2 tunnel |
| ② | Just | It is negative | Rise or valence declines this 2 tunnel |
| ③ | It is negative | Just | Rise or valence declines this 2 tunnel |
| ④ | It is negative | It is negative | Rise or valence declines this 2 tunnel |
There are the rising (in the case that above-mentioned difference is negative) or decline of 1 amount of duty ratio relative to each region (1)~(4)
The processing that the 2 road CPU9 of (in the case that above-mentioned difference is positive) are carried out considers that whole is 16 tunnels (2 in the case of this example4) mould
Formula.
Here, consider to indicate for duty ratio to be fixed as it is certain in the case where output voltage V and output electric current I it is two-dimensional
The machine characteristic curve of relationship.The machine characteristic curve is fixed duty cycle, and load resistance is set as to continuously change to ∞ from 0
When the output voltage that obtains and output electric current corresponding relationship chart, become hyp shape shown in Fig. 3, it is every to increase by 1
Change in duty cycle when position (0.25%).Therefore, in this mode, generally 400.Fig. 3 indicates 2 therein.
Pulse width is increased or decreased in this way, CPU9 controls T1 at regular intervals by PWM, is constantly changed every time
The machine characteristic curve.Assuming that moving to the machine characteristic curve of 1 road, output electricity when region (1) carries out rising 1 processing
Pressure V and output electric current I increase, (V-V0) and (I-I0) be positive, therefore, every time rise when, difference do not stop and become larger and
Diverging.Therefore, it is impossible to the processing of the rising of using area (1).
Then, when the processing declined in region (4), (V-V0) and (I-I0) be negative, output voltage V and output
Electric current I tends to 0, therefore, becomes output when entering region (4) and stops.In addition, usually in initial rise since 0,
It is thus impossible to rise from the region (4).Therefore, the practicability is poor for the decline processing of region (4).
As can seen above, decline processing is limited in region (1), rising processing is limited in region (4), therefore, is had practical
The combination of property focuses on following 4 tunnel.Table 2 indicates remittance the long and.
[table 2]
NOT/A column in table 2, are being more than reference voltage V0Region make output decline, in insufficient reference voltage V0Area
Domain carries out rising processing.As a result, no matter which region to be focused on output voltage V=reference voltage V in0Straight line.That is, with
The V=V that straight line indicates0As shown in Fig. 4 (a), become the attractor of constant pressure line.Equally, as shown in Fig. 4 (b), electric current I=is exported
Reference current I0Attractor as constant-current contour.
Then, rising processing only is carried out in the case where entering region (4), when in addition to this carrying out decline processing, obtained
Box constant pressure and flow characteristic, this becomes box attractor shown in Fig. 4 (c).
Make just corresponding with box constant pressure and flow characteristic when 1, negative and 0, rising and 1, decline corresponding with 0 pair and A/NOR/B.Separately
On the one hand, A/NAND/B becomes L-type output characteristics shown in Fig. 4 (d).
4 above-mentioned tunnels can rise from 0, and imparting does not have diverging/abatement output characteristics, still, box constant pressure and flow characteristic
Practicability highest.But the machine characteristic curve needs to intersect with two-dimentional output characteristic curve.In this case, attracting subfunction R
In I < I0When be R=V-V0, in V < V0When be R=I-I0。
An example of this attraction subfunction can be summarized as follows.
< apsacline exports attractor (referring to Fig. 5) >
The formula for deforming necessary output characteristics arranges as the left side-the right=0, generation attraction subfunction R=I0V+V0I-
V0I0.Moreover, T1 is carried out in the case where R > 0 in CPU9 at regular intervals, the duty ratio of PWM control is declined 1
(0.25%), in the case where R < 0, rise 1 (0.25%), processing in the case where R=0, without any change
When, no matter since which, even if there is any load resistance, output action point towards line attractor, even if afterload change
It is also ± 1 error, repeats to cross over output voltage V=-V0/I0(I-I0) line on rise/fall.Output voltage V companion
It is linearly reduced with the increase of load current, in reference current I when short-circuit0It needs to use output electric current when the characteristic of the limit
I.In this case, the load series resistance of existing progress is not needed.
< parabolic type exports attractor (referring to Fig. 6) >
Subfunction R will be attracted to be set as R=V/V0+(I/I0)2- 2I/I0, decline in the case where R > 0, in the feelings of R < 0
Rise under condition, the processing of no any variation is carried out in the case where R=0, so that operating point is inhaled to the curve of parabolic shape
Introduction is concentrated, and parabolic type output characteristics can be obtained.
< hyperbolic-type exports attractor (referring to Fig. 7) >
Subfunction R will be attracted to be set as R=VI-P0(wherein, P0For benchmark power (power)), in the case where carrying out R > 0
Decline, the processing risen in the case where R < 0, to can get hyperbolic-type output characteristics.This is used to output power keeping one
Fixed situation.
Here, to an example by appropriately combined such as above-mentioned attraction subfunction by the CPU9 two-dimentional output characteristics generated
It is illustrated.
< apsacline two dimension output characteristics >
This is two-dimentional output characteristics shown in Fig. 8, but it is also possible to by the way that apsacline output shown in fig. 5 is used alone
Attractor and generate.
It is short in load in the past by the way that high-tension resistive is inserted into output terminal in series in order to obtain the apsacline characteristic
It is carried out, but created the problem that in a manner of being no more than the current value determined by output voltage V and above-mentioned high-resistance value when road
Because of the insulation of high-tension resistive, not only size becomes larger, and due to fever must far from surrounding component etc..Relative to
This, same characteristic can be obtained simply with the two-dimentional output characteristics of the apsacline of the method.That is, such as by exporting electricity in real time
It presses V and exports the value of electric current I, zero load voltage, that is, reference voltage V0With load short circuit current, that is, reference current I0What is determined is above-mentioned
Like that, scheduled expression of first degree is calculated, thus T1 implements scheduled operation at regular intervals, and exports across angled straight lines repeatedly
It moves up and down.As a result, whenever fixed value will not be become, still, load also changes at any time, can be by 1 change
Change width and inhibits small, controls as a result, as can averagely be sufficiently carried out substantive dynamic.
< box constant pressure and flow output characteristics >
This is two-dimentional output characteristics shown in Fig. 9, however, it is possible to be inhaled by the way that the output of box shown in Fig. 4 (c) is used alone
Introduction and generate.That is, 1 above and below duty ratio is realized " A/NOR/B " based on table 2 by CPU9 by T1 at regular intervals
Disposition.
The box constant pressure and flow output characteristics is not only stable state, can shine the upward period when power supply is connected
It is often used.Even if in this case, output voltage V and output electric current I are also not static fixation, on one side usually across target value
The control as average value is realized in variation on one side.Why do not need to stick to fixed value, is the charge because with electrostatic (electric dust) precipitator
Characteristic is there are relationship, a side of the variation on the contrary good characteristic of charge character instead.The dynamic control is as to electrostatic (electric dust) precipitator
The control mode of power supply is useful.
Changing a side in the case where dust collecting part (load II) does not have advantageous characteristic, instead of this, in general, the suction of dust collecting part
Dirt area is big and static capacity is very big, therefore, becomes if not being sufficiently smoothened and fixes, therefore, as the intentional earthwave of power supply
Line is completely unnecessary, and in the method for being directed toward the dynamic equilibrium control to load change rapid answer, generally includes to export
The small ripple of voltage, it is still, unnecessary to remove the state, its characteristic would rather be effectively utilized.It is also as electricity that it, which looks like,
Dust arrester is used, and charge portion use is served not only as, and be can also be used as dust collecting part power supply and is applicable in.
< constant power output characteristic >
This is two-dimentional output characteristics shown in Fig. 10, exports attractor and Fig. 7 by box shown in constitutional diagram 4 (c)
Hyperbolic-type exports attractor and produces.That is, being by the upper right corner (constant-voltage characteristic in Fig. 4 (c) of box output attractor
The region intersected with constant current characteristic) it is replaced using the hyperbolic-type of Fig. 7 output attractor.
Flash-over characteristic and the intersection point (operating point) of power supply output are put with time going by usually since constant current region
Electrical property change is shifted to constant voltage region.In the meantime, in the case where box output characteristics, voltage/current passes through expression
The output power of maximum value becomes maximum break.Whole thermal design is determined on the basis of the break, therefore, by slightly cutting down
The design of surplus can be set as this point of short time in time.
According to the constant power output characteristic of this example, only increasing duty ratio=X%, the following are conditions can simply implement this
Output characteristics.It can also be corresponded at once in the case where midway will change X value.The fixed output characteristics of duty ratio is and rises a left side
Characteristic similar in the hyperbola of shoulder is also close with the fixed curve of output power.
As above-mentioned, according to the method, with the progress that the dust suction of electrostatic (electric dust) precipitator operates, flash-over characteristic itself is according to load
Change and change, therefore, from voltage detecting circuit 3 and electric current in such a way that operating point only makes to change on two-dimentional output characteristic curve
Detection circuit 6 rapidly extracts output voltage V and exports the instantaneous value of electric current I, its expansion controlled to PWM is done to close immediately
Reflection, and not depart from the mode on above-mentioned two-dimentional output characteristic curve, it is necessary to duty ratio is determined by the speed of load variations
The timing of update.Relative to 1 variation, the variable quantity of final output voltage/current is also different according to operating point, therefore, nothing
By being which load can obtain to quasi-steady dynamic equilibrium, operating point only to take on constant voltage/constant current characteristic curve in appearance
Value operated.That is, being operated always across two-dimentional output characteristic curve.It as a result, can not only be with the variation wink of load
When it is corresponding, and relative to target value variation also can quickly correspond to, can instantaneously change two-dimentional output characteristic curve sheet
Body.In the case where changing the current value of constant-current characteristics, target value, that is, implementable is only changed, the voltage ramp characteristic the case where
Under only to change formula i.e. implementable, therefore, be able to carry out in the movement in program.This is in the height for being suitable for electrical dust suction
In the case where voltage source, load condition variation in use changes part throttle characteristics according to the variation, can control, therefore is suitable
It closes.That is, can be operated by Dynamic Two-dimensional output characteristics.
By the way, it in the case where existing analogue type, replaces power supply itself or prepares other components, pass through relay
The switching of device switching etc. is not easy.
In the power supply device that above embodiment is recorded, outfit when just in case control is out of control, system is different from main control,
The whole other control systems of control device can also be carried.Even if, can also as a result, in the case where another party can not control
To ensure to restore by the reset from other sides, the raising of reliability can contribute to.
Industrial utilizability
The present invention is being carried out electrostatic (electric dust) precipitator etc., can had using the industrial circle of the manufacture sale of equipment of high-voltage power supply etc.
Effect ground utilizes.
Symbol description
V output voltage
I exports electric current
V0Reference voltage
I0Reference current
I, II load
Tr field effect transistor
1 step-up transformer
2 rectification multiple pressuring circuits
3 voltage detecting circuits
5 main control units
6 current detection circuits
9 CPU
10 PWM signal generation sections
Claims (4)
1. a kind of power supply device consists of while detecting the output voltage V and output electric current I for load, and will test
Output voltage V out and output electric current I are supplied to control unit, thus by described control unit carry out for be based on it is described
The duty ratio control of the PWM control of the separated exciting converting means of load connection, which is characterized in that
The control device is functioned by following procedure: the machine characteristic curve is used, to by target two dimension output characteristics
The attraction subfunction R while substitution that shape uniquely the determines detected output voltage V and output electric current I, according to acquisition
The attraction subfunction R sign symbol, be used in the duty ratio of PWM control to the attractor every the set time
The direction increase and decrease that boundary line when function R=0 is concentrated, carries out dynamic control in a manner of across scheduled target two dimension output characteristics
System, wherein the machine characteristic curve indicate as the output voltage V and it is described export electric current I pair two-dimentional relation, and table
Show and intersect with target two dimension output characteristics, and duty ratio is fixed as to constant, institute when load resistance being made to change from zero to infinity
The two-dimensional relationship of the output voltage V and output electric current I that obtain,
When target two dimension output characteristics is apsacline, the attraction subfunction R is R=I0V+V0I-V0I0；When target two dimension is defeated
When characteristic is parabolic type out, the attraction subfunction R is R=V/V0+(I/I0)2- 2I/I0；When target two dimension output characteristics
When for hyperbolic-type, the attraction subfunction R is R=VI-P0；When target two dimension output characteristics is box, I < I0And V <
V0When be R=V-V0, R=I-I0, I < I0And V > V0When be R=V-V0, I > I0And V < V0When be R=I-I0,
Wherein, I0For benchmark electric current, V0For benchmark voltage, P0For benchmark power.
2. power supply device according to claim 1, which is characterized in that
Only in the output voltage V and the reference voltage V0Poor and described output electric current I and the reference current I0Difference
When being negative, the duty ratio is made to rise 1, in addition to this, implements the control of decline 1 every the set time, thus
The target two dimension output characteristics is set to become box two dimension constant voltage/constant current output characteristics,
Wherein, the duty ratio, which rises 1 or decline 1, indicates that the duty ratio increases by 0.25% or reduction 0.25%.
3. power supply device according to claim 1, which is characterized in that
Implementing the target two dimension output characteristics obtained control as follows every the set time is that straight incline voltage is special
Property: the attraction subfunction R is the attraction subfunction R=V indicated with expression of first degree0I+I0V-V0I0, accounting in the case where R > 0
Sky rises 1 in duty ratio control in the case where R < 0 than declining 1 in control, and continues in the case where R=0
The control of state before,
Wherein, the duty ratio, which rises 1 or decline 1, indicates that the duty ratio increases by 0.25% or reduction 0.25%.
4. power supply device according to claim 1, which is characterized in that
Control based on described control unit and the target two dimension output characteristics that generates is following characteristic: in scheduled electric current
Constant-voltage characteristic is indicated when following, the low invariable power of voltage drop is special while increase when being more than the range of the electric current for electric current
Property.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-195763 | 2014-09-25 | ||
| JP2014195763A JP6410350B2 (en) | 2014-09-25 | 2014-09-25 | Power supply |
| PCT/JP2015/076794 WO2016047635A1 (en) | 2014-09-25 | 2015-09-18 | Power supply device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107078641A CN107078641A (en) | 2017-08-18 |
| CN107078641B true CN107078641B (en) | 2019-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580052051.1A Active CN107078641B (en) | 2014-09-25 | 2015-09-18 | Power supply device |
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| Country | Link |
|---|---|
| JP (1) | JP6410350B2 (en) |
| CN (1) | CN107078641B (en) |
| WO (1) | WO2016047635A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6680059B2 (en) * | 2016-04-15 | 2020-04-15 | Tdk株式会社 | Switching power supply device and switching control circuit |
| JP6613459B2 (en) * | 2017-01-30 | 2019-12-04 | パナソニックＩｐマネジメント株式会社 | Flux recovery device and reflow device |
| US10695713B2 (en) | 2017-01-30 | 2020-06-30 | Panasonic Intellectual Property Management Co., Ltd. | Flux recovery device, and reflow apparatus and gas exchange method using the same |
| CN112594881B (en) * | 2020-12-11 | 2022-02-08 | 珠海格力电器股份有限公司 | Method and device for controlling air purifier, processor and electronic device |
| CN112594882B (en) * | 2020-12-11 | 2022-01-28 | 珠海格力电器股份有限公司 | Method and device for controlling air purifier, processor and electronic device |
| CN112827655B (en) * | 2021-01-06 | 2022-03-01 | 珠海格力电器股份有限公司 | Dust removal module calibration method, device and equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5824923B2 (en) * | 1976-03-29 | 1983-05-24 | 日東電工株式会社 | Manufacturing method of variable resistor |
| JPH01252166A (en) * | 1988-03-31 | 1989-10-06 | Toshiba Lighting & Technol Corp | Power device |
| CN1452531A (en) * | 2000-05-26 | 2003-10-29 | 三菱电机株式会社 | Apparatus for electrodischarge machining |
| CN102576234A (en) * | 2009-09-02 | 2012-07-11 | 松下电器产业株式会社 | Power supply device |
| WO2013149196A1 (en) * | 2012-03-29 | 2013-10-03 | Texas Instruments Incorporated | Power supply control method for constant current constant power control |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5824923A (en) * | 1981-08-05 | 1983-02-15 | Japan Storage Battery Co Ltd | Switching regulator |
| JP3919125B1 (en) * | 2006-08-29 | 2007-05-23 | 株式会社パワーシステム | Capacitor charger |
-
2014
- 2014-09-25 JP JP2014195763A patent/JP6410350B2/en active Active
-
2015
- 2015-09-18 CN CN201580052051.1A patent/CN107078641B/en active Active
- 2015-09-18 WO PCT/JP2015/076794 patent/WO2016047635A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5824923B2 (en) * | 1976-03-29 | 1983-05-24 | 日東電工株式会社 | Manufacturing method of variable resistor |
| JPH01252166A (en) * | 1988-03-31 | 1989-10-06 | Toshiba Lighting & Technol Corp | Power device |
| CN1452531A (en) * | 2000-05-26 | 2003-10-29 | 三菱电机株式会社 | Apparatus for electrodischarge machining |
| CN102576234A (en) * | 2009-09-02 | 2012-07-11 | 松下电器产业株式会社 | Power supply device |
| WO2013149196A1 (en) * | 2012-03-29 | 2013-10-03 | Texas Instruments Incorporated | Power supply control method for constant current constant power control |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016067166A (en) | 2016-04-28 |
| WO2016047635A1 (en) | 2016-03-31 |
| JP6410350B2 (en) | 2018-10-24 |
| CN107078641A (en) | 2017-08-18 |
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