CN207304013U - The power factor correction circuit compared based on stagnant ring - Google Patents
The power factor correction circuit compared based on stagnant ring Download PDFInfo
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- CN207304013U CN207304013U CN201721436916.7U CN201721436916U CN207304013U CN 207304013 U CN207304013 U CN 207304013U CN 201721436916 U CN201721436916 U CN 201721436916U CN 207304013 U CN207304013 U CN 207304013U
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Abstract
It the utility model is related to power factor correction technology, more particularly to the power factor correction circuit compared based on stagnant ring, including decompression alternating current, current rectifying and wave filtering circuit and AC load, further include current-voltage transformer, current-voltage sampling module, hystersis controller, metal-oxide-semiconductor drive circuit, auxiliary power module and air gap inductance and filter capacitor；Decompression alternating current connects current rectifying and wave filtering circuit and air gap inductance, current rectifying and wave filtering circuit connection auxiliary power module respectively, and auxiliary power module connects metal-oxide-semiconductor drive circuit, current-voltage transformer, current-voltage sampling module and hystersis controller respectively；Air gap inductance is sequentially connected current-voltage transformer, current-voltage sampling module, hystersis controller and metal-oxide-semiconductor drive circuit, and metal-oxide-semiconductor drive circuit connects air gap inductance and filter capacitor, filter capacitor connection AC load respectively.The circuit for rectifying can realize the correction of power factor, and small, easy to carry, circuit is simple, and power consumption is low, function admirable, and cost is low.The degree of modularity is high, is easily integrated.
Description
Technical field
The utility model belongs to power factor correction technical field, more particularly to the power factor correction compared based on stagnant ring
Circuit.
Background technology
Power factor（PF）It is defined as active power（P）With apparent energy（S）Ratio, i.e. PF=P/S.Cause power because
The reason for number reduces has two, and one is phase angle ψ between line voltage distribution and electric current, the other is the waveform of curtage
Distortion.Firstly, since many household electrical appliance（Such as ventilating fan, smoke exhaust ventilator）It is that the impedance containing reactance is born with electrical equipment
Carry, so just can there is the phase angle ψ between voltage and electric current.Secondly, current total harmonic distortion factor THD is excessive so that electric current
Waveform produces serious distortion so that line power factor is too low and current ramp too high levels.Therefore, when power factor is too low,
Electric energy huge waste is not only resulted in, the rated capacity of alternating voltage equipment cannot make full use of, and export substantial amounts of reactive power,
Cause power transmission efficiency to reduce, and serious pollution can be produced to electric system, influence the electric circumstance of whole electric system.Base
In this point, a kind of efficient, low in energy consumption, modularization, power factor correction circuit important in inhibiting easy of integration are realized.
Utility model content
The purpose of this utility model is to provide a kind of efficient, low in energy consumption, modularization, power factor correction easy of integration electricity
Road.
To achieve the above object, the technical solution adopted in the utility model is：The power factor correction compared based on stagnant ring
Circuit, including decompression alternating current, current rectifying and wave filtering circuit and AC load, further include current-voltage transformer, current-voltage sampling mould
Block, hystersis controller, metal-oxide-semiconductor drive circuit, auxiliary power module and air gap inductance and filter capacitor；Decompression alternating current connects respectively
Current rectifying and wave filtering circuit and air gap inductance, current rectifying and wave filtering circuit connection auxiliary power module are connect, auxiliary power module connects MOS respectively
Tube drive circuit, current-voltage transformer, current-voltage sampling module and hystersis controller；Air gap inductance is sequentially connected electric current electricity
Pressure mutual inductor, current-voltage sampling module, hystersis controller and metal-oxide-semiconductor drive circuit, metal-oxide-semiconductor drive circuit connect air gap respectively
Inductance and filter capacitor, filter capacitor connection AC load.
In the above-mentioned power factor correction circuit compared based on stagnant ring, current-voltage transformer includes current transformer
TA1015-2, voltage transformer TV1013-1H and sample circuit.
In the above-mentioned power factor correction circuit compared based on stagnant ring, current-voltage sampling module uses TLC3578.
In the above-mentioned power factor correction circuit compared based on stagnant ring, hystersis controller include hysteresis comparator and
TM4C123G processors.
In the above-mentioned power factor correction circuit compared based on stagnant ring, metal-oxide-semiconductor drive circuit uses half-bridge structure.
The beneficial effects of the utility model are：（1）It can realize the correction of power factor.It is small, it is easy to carry（2）Electricity
Road is simple, and power consumption is low, function admirable（3）Cost is low.（4）The degree of modularity is high, is easily integrated.
Brief description of the drawings
Fig. 1 is the utility model one embodiment circuit module block diagram；
Fig. 2 is the Hysteresis control model of the utility model one embodiment；
Fig. 3 is the utility model one embodiment main circuit frame diagram.
Embodiment
The embodiment of the utility model is described in detail below in conjunction with the accompanying drawings.
The example of the embodiment is shown in the drawings, wherein same or similar label represents identical or class from beginning to end
As element or there is same or like element.The embodiments described below with reference to the accompanying drawings are exemplary, only
For explaining the utility model, and the limitation to the utility model cannot be construed to.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the utility model.For
The disclosure of simplified the utility model, is hereinafter described the component and setting of specific examples.They are merely examples, and
And purpose does not lie in limitation the utility model.In addition, the utility model can in different examples repeat reference numerals and/or word
It is female.This repetition is for purposes of simplicity and clarity, between itself not indicating discussed various embodiments and/or setting
Relation.In addition, the utility model provides the example of various specific techniques and material, but those of ordinary skill in the art can
To recognize the use of the applicability of other techniques and/or other materials.In addition, fisrt feature described below is special second
Levy it " on " structure can include the first and second features and be formed as the embodiment that directly contacts, other spy can also be included
Sign is formed in the embodiment between the first and second features, and such first and second feature may not be direct contact.
, it is necessary to which explanation, unless otherwise prescribed and limits, term " connected " " connection " should in the description of the utility model
It is interpreted broadly, for example, it may be the connection inside mechanical connection or electrical connection or two elements, can be direct
It is connected, can also be indirectly connected by intermediary, can be according to specific feelings for those of ordinary skill in the related art
Condition understands the concrete meaning of above-mentioned term.
As shown in Figure 1, the power factor correction circuit compared based on stagnant ring of the present embodiment design, including Current Voltage are mutual
Sensor, current-voltage sampling module, hystersis controller, metal-oxide-semiconductor drive circuit, auxiliary power module and air gap inductance and filtering
Capacitance.
Wherein, current-voltage transformer, is that the high voltage of the alternating current through decompression and high current are converted to corresponding low electricity
Pressure.Current-voltage sampling module, is that the low-voltage that will be changed is AD converted as serial data.Hystersis controller, is to receive AD
The serial data of transmission, obtains the instantaneous value of voltage and current, and carrying out stagnant ring using instantaneous value compares, in corresponding I/O mouthfuls of output
Pwm control signal controls MSO tube drive circuits.Metal-oxide-semiconductor drive circuit utilizes the topological structure of half-bridge structure, is to utilize MOS
The discharge and recharge for realizing air gap inductance electric current is cut-off, so as to fulfill the control to Current Tracing voltage.Auxiliary power module utilizes city
Electricity is as input, and generation ripple is small, efficient, and the high DC source of output voltage regulation is current-voltage transformer, and electric current is electric
Press sampling module, metal-oxide-semiconductor drive circuit and hysteresis comparator power supply.
City is electrically accessed 48V/500W transformers, it exports Vo and is inputted by diode rectification and filter circuit to auxiliary electricity
Source module, produces 12V, 5V, -5V, 3.3V DC power supplies, and power supply ripple is small, efficient, and output voltage regulation is high, is
Each circuit of system and module for power supply.Current-voltage transformer by current transformer TA1015-2, voltage transformer TV1013-1H with
And sample circuit is formed, by loop current and voltage conversion into the voltage that AD samplings can be carried out by voltage and current sampling module
Amplitude, prevents current-voltage sampling module from burning out.Can be by varying the ratio electricity in the OPA2227 amplifying circuits of sample circuit
Resistance changes the output voltage of mutual inductor.TLC3578 being sampled to what current-voltage transformer exported on both channels, with
Sampled data is transmitted in hysteresis comparator by SPI communication mode, and hysteresis comparator is by TM4C123G processors to transmitting number
According to computing is carried out, the instantaneous voltage value of corresponding passage is obtained, and carry out stagnant ring and compare.
As shown in Fig. 2, due to the characteristic of load, loop voltage waveform is nearly free from the phase shift and distortion of waveform, therefore
The references object compared using the instantaneous voltage of sampling as stagnant ring, is denoted as Isef, while sample rate current instantaneous value is as stagnant ring
The control object compared, is denoted as Ik.One hysteresis band 2H is set, using in processor control system circuit | Isef-Ik |≤
H.Work as Isef-Ik>During H, turn in metal-oxide-semiconductor drive circuit T1 and T4 metal-oxide-semiconductors using I/O mouthfuls of PWM ripples of processor, T2 and
T3 is disconnected, and then, air gap inductance electric current flows into ground, while filter capacitor electric current also flows to ground, Ik is reduced so that Ik is returned
In ring.Similarly, Isef-Ik is worked as>During-H, lead T2 and T3MOS pipes in metal-oxide-semiconductor drive circuit using I/O mouthfuls of PWM ripples of processor
Logical, T1 and T4 are disconnected, and then, power supply V0 charges to air gap inductance, current direction load and filter capacitor so that Ik increases, make
Ik is obtained to return in ring.Then, under the control of I/O mouthfuls of high-frequency PWM ripples, realize that Ik follows the trail of Isef, that is, realize that loop current is followed the trail of
Loop voltage, so as to fulfill High Power Factor.
Main circuit frame is as shown in Figure 3.
In conclusion the present embodiment power factor correction circuit by alternating current after transformer, rectification by accessory power supply
It is powered for modules.Current-voltage transformer and current-voltage sampling module obtain the transient current magnitude of voltage of alternating current,
With serial date transfer hysteresis comparator, hysteresis comparator drives MOS by stagnant ring algorithm in the PWM ripples that I/O outputs need
Tube drive circuit so that main circuit current tracking voltage where air gap inductance, realizes power factor correction.Air gap inductance resists full
With, can by high current, for whole system carry out energy storage.Filter capacitor realizes that the output to metal-oxide-semiconductor drive circuit is filtered,
And it is load storage energy.
It should be appreciated that the part that this specification does not elaborate belongs to the prior art.
Although describe specific embodiment of the present utility model, those of ordinary skill in the art above in association with attached drawing
It should be appreciated that these are merely illustrative of, various deformation or modification can be made to these embodiments, without departing from this practicality
New principle and essence.The scope of the utility model is only limited by the claims that follow.
Claims (5)
1. the power factor correction circuit compared based on stagnant ring, including decompression alternating current, current rectifying and wave filtering circuit and AC load, it is special
Sign is to further include current-voltage transformer, current-voltage sampling module, hystersis controller, metal-oxide-semiconductor drive circuit, accessory power supply
Module and air gap inductance and filter capacitor；Decompression alternating current connects current rectifying and wave filtering circuit and air gap inductance, rectifying and wave-filtering electricity respectively
Road connects auxiliary power module, and auxiliary power module connects metal-oxide-semiconductor drive circuit, current-voltage transformer, Current Voltage respectively
Sampling module and hystersis controller；Air gap inductance is sequentially connected current-voltage transformer, current-voltage sampling module, Hysteresis control
Device and metal-oxide-semiconductor drive circuit, metal-oxide-semiconductor drive circuit connect air gap inductance and filter capacitor respectively, and filter capacitor connection exchange is negative
Carry.
2. the power factor correction circuit compared as claimed in claim 1 based on stagnant ring, it is characterized in that, current-voltage transformer
Including current transformer TA1015-2, voltage transformer TV1013-1H and sample circuit.
3. the power factor correction circuit compared as claimed in claim 1 based on stagnant ring, it is characterized in that, current-voltage sampling mould
Block uses TLC3578.
4. the power factor correction circuit compared as claimed in claim 1 based on stagnant ring, it is characterized in that, hystersis controller includes
Hysteresis comparator and TM4C123G processors.
5. the power factor correction circuit compared as claimed in claim 1 based on stagnant ring, it is characterized in that, metal-oxide-semiconductor drive circuit
Using half-bridge structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721436916.7U CN207304013U (en) | 2017-10-27 | 2017-10-27 | The power factor correction circuit compared based on stagnant ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721436916.7U CN207304013U (en) | 2017-10-27 | 2017-10-27 | The power factor correction circuit compared based on stagnant ring |
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| Publication Number | Publication Date |
|---|---|
| CN207304013U true CN207304013U (en) | 2018-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721436916.7U Expired - Fee Related CN207304013U (en) | 2017-10-27 | 2017-10-27 | The power factor correction circuit compared based on stagnant ring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110557062A (en) * | 2019-10-16 | 2019-12-10 | 哈尔滨理工大学 | Efficient control device for power factor of diesel generator set |
-
2017
- 2017-10-27 CN CN201721436916.7U patent/CN207304013U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110557062A (en) * | 2019-10-16 | 2019-12-10 | 哈尔滨理工大学 | Efficient control device for power factor of diesel generator set |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180501 Termination date: 20181027 |