CN206041808U - Direct current boost chopper circuit of ratio adjustment link based on have wave filter - Google Patents
Direct current boost chopper circuit of ratio adjustment link based on have wave filter Download PDFInfo
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- CN206041808U CN206041808U CN201621115607.5U CN201621115607U CN206041808U CN 206041808 U CN206041808 U CN 206041808U CN 201621115607 U CN201621115607 U CN 201621115607U CN 206041808 U CN206041808 U CN 206041808U
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- comparator
- electrochemical capacitor
- chopper circuit
- inductance
- transistor
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- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
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- 238000001914 filtration Methods 0.000 abstract description 3
- 101150109657 ureF gene Proteins 0.000 abstract 2
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- 238000006243 chemical reaction Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
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Abstract
Direct current boost chopper circuit of ratio adjustment link based on have wave filter belongs to the electrical control field, the utility model discloses a solve the boost chopper circuit of the fixed ratio of the input/output and restrict its range of application, inflexible problem because the proportion is nontunable. The utility model discloses an inductance L1, inductance L2, diode VD2, electrolytic capacitor C1~C3, transistor V1, comparator A1, A2, reference DC power supply UREF, resistance R1, R2 and triangle generator, C2, L2, C3 constitute " wave filter " and carry out filtering to sample voltage kuo, strain noise signal, obtain voltage signal k u o and act on A1 inverting input end, and more enlarged with the reference voltage UREF of non inverting input end, this proportional controller link reachs setting uA1. A2 adjusts the result and makes output voltage uo stable in the desired value according to the setting uA1 of this A1 output, the duty cycle of utilizing triangular wave signal conditioning A2 to export uA2.
Description
Technical field
This utility model belongs to field of electrical control.
Background technology
With developing rapidly for Power Electronic Technique, high-voltage switch gear regulated power supply is widely used in computer, communication, industry
The field such as processing and Aero-Space.All of power equipment is required for good stable power supply, and the outside energy for providing is most
For exchanging, power-supply device is responsible for various classification direct current tasks alternating current power supply is converted to needed for electronic equipment.But institute sometimes
For DC voltage do not meet equipment needs, still need to conversion, referred to as DC/DC conversion.DC chopper circuit becomes as unidirectional current
The DC-DC converter of another kind of fixed voltage, in DC drive system., charging storage circuit, Switching Power Supply, power electronics become
Common application is obtained in changing device and various electrical equipments.Occur in that therewith such as buck circuit, boost chopper,
The translation circuit of the various ways such as stepping-up/stepping-down chopper circuit, compound chopper circuit.Chopped wave technique has been widely used switch
In power supply and DC motor drive so as to which control is obtained and accelerates the steady, effect of quick response, saves energy.Full-control type electricity
Power electronic device IGBT is widely used in the transmission of traction fax electrokinetic energy and conversion, active power filtering energy field.
Wherein boost chopper is that, using extremely extensive one kind, its typical schematic diagram is as shown in figure 1, when V1 is turned on
When, inductance L is accessed power supply equivalent to directly, and as inductive current can not be mutated, the electric current for then flowing through inductance L gradually increases
(now self inductance prevents the increase of magnetic flux, and self induction electromotive force direction is with electric current conversely, preventing increasing sharply for electric current), will
Energy storage is in magnetic field；When V1 is turned off, as inductive current can not be mutated, inductance L produces self induction electromotive force to prevent magnetic
The decline of flux, be may determine that out by electric current, and the self induction electromotive force of inductance L is left just to bear the right side, just with power supply in the same direction, voltage phase
Superposition, output voltage uoThan input voltage uiHeight, generates boost effect.The most output of existing DC boosting chopper circuit
The ratio of voltage and input voltage is to fix nonadjustable, therefore, its range of application, underaction is limited when in use.
The content of the invention
This utility model purpose is to solve the boost chopper for exporting input fixed ratio as ratio is non-adjustable
And limit its range of application, inflexible problem, there is provided a kind of direct current liter based on the proportion adjustment link with wave filter
Pressure chopper circuit.
DC boosting chopper circuit based on the proportion adjustment link with wave filter described in the utility model includes inductance
L1, inductance L2, diode VD2, electrochemical capacitor C1, electrochemical capacitor C2, electrochemical capacitor C3, transistor V1, comparator A1, comparator
A2, with reference to DC source UREF, resistance R1, resistance R2 and triangular-wave generator；
One end of inductance L1 connects the positive pole of input DC power, and the other end of inductance L1 connects the leakage of transistor V1 simultaneously
Pole and the anode of diode VD2, the negative electrode of diode VD2 connect the positive pole of electrochemical capacitor C1, one end of resistance R1 simultaneously and cut
Wave circuit cathode output end；
The grid of transistor V1 connects the outfan of comparator A2, and the inverting input connection triangular wave of comparator A2 occurs
The triangular signal outfan of device, the in-phase input end of comparator A2 connect the outfan of comparator A1, the homophase of comparator A1
Input connection is with reference to DC source UREFPositive pole, the inverting input of comparator A1 connects the positive pole of electrochemical capacitor C3 simultaneously
With one end of inductance L2, the other end of inductance L2 is while connect the positive pole of electrochemical capacitor C2, the other end of resistance R1 and resistance R2
One end；
The other end of resistance R2 is while connecting the negative pole of input DC power, the source electrode of transistor V1, referring to DC source
UREFNegative pole, the negative pole of electrochemical capacitor C3, the negative pole of electrochemical capacitor C2, the negative pole of electrochemical capacitor C1 and chopper circuit negative pole it is defeated
Go out end.
Preferably, transistor V1 is provided with parasitic diode VD1, and parasitic diode VD1 is connected in reverse parallel in transistor V1's
Between source electrode, drain electrode.
Advantage of the present utility model：DC boosting based on the proportion adjustment link with wave filter described in the utility model
Chopper circuit has proportion adjustment link, the ratio between flexible adjustment output voltage and input voltage, flexibly applies
In various environment, applied range, and circuit structure is simple, practical.
Description of the drawings
Fig. 1 is the schematic diagram of the existing DC boosting chopper circuit based on the proportion adjustment link with wave filter；
Fig. 2 is the original of the DC boosting chopper circuit based on the proportion adjustment link with wave filter described in the utility model
Reason figure.
Specific embodiment
Illustrate present embodiment with reference to Fig. 2, the agent structure of present embodiment DC boosting chopper circuit include L1,
V1, VD1, VD2, C1, these parts are identical with existing boost chopper, and present embodiment circuit increased proportion adjustment work(
Can, make output voltage uoWith input voltage uiRatio it is adjustable, to ensure to export stable output voltage uo, present embodiment sets
The proportion adjustment circuit of band filter is counted, R1, R2 constitute bleeder circuit, wherein the voltage at R2 two ends sampled, is obtained
Sampling resistor R2 both end voltage values kuo, wherein k ∈ (0,1).
C2, L2, C3 constitute " wave filter " to sampled voltage kuoIt is filtered, can effectively filters noise signal, obtain electricity
Pressure signal k ūo, k ūoFor the steady rear voltage of filtering.
Voltage signal k ūoThe inverting input of comparator A1 is acted on, the reference voltage U with in-phase input endREFRelatively put
Greatly, this link can be considered proportional controller link, draw adjustment amount uA1.Adjustment amount us of the comparator A2 according to the A1 outputsA1、
A2 output u are adjusted using triangular signalA2Dutycycle, adjust result make output voltage uoStablize in expected value, i.e., by electricity
Pressure signal k ūoRatio adjust the output voltage u to complete the chopper circuitoIt is stable to export.
Claims (2)
1. based on wave filter proportion adjustment link DC boosting chopper circuit, it is characterised in that including inductance L1, electricity
Sense L2, diode VD2, electrochemical capacitor C1, electrochemical capacitor C2, electrochemical capacitor C3, transistor V1, comparator A1, comparator A2, ginseng
Examine DC source UREF, resistance R1, resistance R2 and triangular-wave generator；
One end of inductance L1 connects the positive pole of input DC power, the other end of inductance L1 connect simultaneously the drain electrode of transistor V1 and
The anode of diode VD2, the negative electrode of diode VD2 connect the positive pole of electrochemical capacitor C1, one end of resistance R1 and copped wave electricity simultaneously
Road cathode output end；
The grid of transistor V1 connects the outfan of comparator A2, the inverting input connection triangular-wave generator of comparator A2
Triangular signal outfan, the in-phase input end of comparator A2 connect the outfan of comparator A1, the homophase input of comparator A1
End connection is with reference to DC source UREFPositive pole, the inverting input of comparator A1 connects the positive pole and electricity of electrochemical capacitor C3 simultaneously
One end of sense L2, the other end of inductance L2 connect the one of positive pole, the other end of resistance R1 and the resistance R2 of electrochemical capacitor C2 simultaneously
End；
The other end of resistance R2 connects the negative pole of input DC power, the source electrode of transistor V1 simultaneously, with reference to DC source UREF's
Negative pole, the negative pole of electrochemical capacitor C3, the negative pole of electrochemical capacitor C2, the negative pole of electrochemical capacitor C1 and chopper circuit cathode output end.
2. according to claim 1 based on wave filter proportion adjustment link DC boosting chopper circuit, its feature
It is that transistor V1 is provided with parasitic diode VD1, parasitic diode VD1 is connected in reverse parallel in the source electrode of transistor V1, drains it
Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621115607.5U CN206041808U (en) | 2016-10-11 | 2016-10-11 | Direct current boost chopper circuit of ratio adjustment link based on have wave filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621115607.5U CN206041808U (en) | 2016-10-11 | 2016-10-11 | Direct current boost chopper circuit of ratio adjustment link based on have wave filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206041808U true CN206041808U (en) | 2017-03-22 |
Family
ID=58298013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621115607.5U Expired - Fee Related CN206041808U (en) | 2016-10-11 | 2016-10-11 | Direct current boost chopper circuit of ratio adjustment link based on have wave filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206041808U (en) |
-
2016
- 2016-10-11 CN CN201621115607.5U patent/CN206041808U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170322 |