CN209184480U - I type specially gets higher power factor power circuit and its measuring instrument - Google Patents
I type specially gets higher power factor power circuit and its measuring instrument Download PDFInfo
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- CN209184480U CN209184480U CN201920143918.XU CN201920143918U CN209184480U CN 209184480 U CN209184480 U CN 209184480U CN 201920143918 U CN201920143918 U CN 201920143918U CN 209184480 U CN209184480 U CN 209184480U
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- 238000001914 filtration Methods 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 230000005611 electricity Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 10
- 239000003990 capacitor Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 206010037660 Pyrexia Diseases 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The utility model discloses a kind of I types specially to get higher power factor power circuit, including EMC filter circuit, current rectifying and wave filtering circuit, DC/DC power conversion circuit and power factor improve circuit；Power factor improves the power factor that circuit improves power circuit；EMC filter circuit carries out EMC protection and filtering to the electric energy of input；The AC energy of input is converted to direct current energy and is filtered by current rectifying and wave filtering circuit；Direct current energy is converted to stable DC energy and supplying power for outside by DC/DC power conversion circuit.The invention also discloses the measuring instruments that power factor power circuit is specially got higher including the I type.The utility model ensure that the power factor of power circuit at work is higher, and the efficiency of power circuit is higher, specially become suitable for I type, and high reliablity, significant effect and low in cost.
Description
Technical field
The utility model specially gets higher power factor power circuit and its measuring instrument more particularly to a kind of I type.
Background technique
With the development and the improvement of people's living standards of economic technology, electric energy has become in people's production and life
Essential secondary energy sources bring endless convenience to people's production and life.Very big with electronic equipment is popularized,
Linked network equipment on power grid is also more and more.After electronic equipment linked network, due to the quality of its equipment, the low factor of height of technology,
The power factor of the power circuit of each electronic equipment is different from.And the power circuit of low power factor, it can be infused to power grid
Enter a large amount of harmonic wave, to influence the quality of power grid power supply.Therefore, power grid is proposed certain all types of linked network equipment
Power factor requirement, to guarantee the power quality of power grid.
Currently, the functional block diagram such as FIG. 1 to FIG. 3 of common power circuit:
In Fig. 1, by way of increasing and inputting current-limiting resistance: increasing the most common mode of input impedance is to increase input electricity
Hinder resistance value, this mode can effective increase power factor, but when power module fully loaded output, efficiency will very
It is low；
In Fig. 2, in such a way that the filtering part in original current rectifying and wave filtering circuit is replaced with valley fill type filter circuit:
Valley fill circuit can be with biggish increase power factor, but valley fill circuit is serial connection charge, parallel discharge type, thus it is defeated
Enter voltage range to be restricted；
In Fig. 3, current rectifying and wave filtering circuit rear end increase active power factor correction circuit by way of: active power because
The increase power factor that correcting circuit can be preferable is counted, but in I type specially becomes, because of the problem of volume and cost limit,
Active power factor correction circuit is not almost available.
Utility model content
One of the purpose of this utility model is to provide a kind of high reliablity, significant effect, low in cost and be suitable for I type
The I type specially become specially gets higher power factor power circuit.
The two of the purpose of this utility model are to provide a kind of measuring instrument, which includes that the I type is special
Get higher power factor power circuit.
This I type provided by the utility model specially gets higher power factor power circuit, including EMC filter circuit, rectification filter
Wave circuit and DC/DC power conversion circuit further include that power factor improves circuit；Power factor improves circuit, EMC filtered electrical
Road, current rectifying and wave filtering circuit and DC/DC power conversion circuit are sequentially connected in series；Power factor improves circuit for improving power circuit
Power factor；EMC filter circuit is used to carry out EMC protection and filtering to the electric energy of input；Current rectifying and wave filtering circuit is used for will be external
The AC energy of input is converted to direct current energy and is filtered；DC/DC power conversion circuit is used for will be straight after rectifying and wave-filtering
Galvanic electricity can be converted to stable DC energy and supplying power for outside.
It includes NTC thermistor and resistance that the power factor, which improves circuit,；NTC thermistor and resistor coupled in parallel；NTC
Thermistor is the thermistor with negative temperature coefficient.
The resistance is big resistance value wire resistor；The big resistance value is defined as: the Ω of 100 Ω~300.
The invention also discloses a kind of measuring instrument, the measuring instrument includes that the I type specially gets higher power
Factor power circuit.
This I type provided by the utility model specially gets higher power factor power circuit and its measuring instrument, passes through parallel connection
NTC thermistor and resistance ensure that the power factor of power circuit at work is higher, so that the efficiency of power circuit
It is higher；Therefore, the utility model is suitable for I type and specially becomes, and high reliablity, significant effect and low in cost.
Detailed description of the invention
Fig. 1 is the functional block diagram of existing first power circuit.
Fig. 2 is the functional block diagram of existing second source circuit.
Fig. 3 is the functional block diagram of existing third power circuit.
Fig. 4 is that the I type of the utility model specially gets higher the functional block diagram of power factor power circuit.
Fig. 5 is the circuit original that the I type of the utility model specially gets higher the power factor raising circuit of power factor power circuit
Manage schematic diagram.
Fig. 6 is the EMC filter that the I type of the utility model specially gets higher the power factor raising circuit of power factor power circuit
The circuit theory schematic diagram of wave circuit.
Fig. 7 is the rectification filter that the I type of the utility model specially gets higher the power factor raising circuit of power factor power circuit
The circuit theory schematic diagram of wave circuit.
Specific embodiment
The I type for being illustrated in figure 4 the utility model specially gets higher the functional block diagram of power factor power circuit: this is practical new
This I type that type provides specially gets higher power factor power circuit, including EMC filter circuit, current rectifying and wave filtering circuit, DC/DC power
Translation circuit and power factor improve circuit；Power factor improves circuit, EMC filter circuit, current rectifying and wave filtering circuit and DC/DC
Power conversion circuit is sequentially connected in series；Externally input AC energy improves the power that circuit improves power circuit by power factor
EMC filter circuit is input to after factor；EMC filter circuit is input to rectification after carrying out EMC protection and filtering to the electric energy of input
Filter circuit；Current rectifying and wave filtering circuit is for being converted to direct current energy for the AC energy of input and being filtered；DC/DC power becomes
Circuit is changed for the direct current energy after rectifying and wave-filtering to be converted to stable DC energy and supplying power for outside.
The I type for being illustrated in figure 5 the utility model specially gets higher the power factor of power factor power circuit and improves circuit
Circuit theory schematic diagram: it includes NTC thermistor RT and resistance R that power factor, which improves circuit,；NTC thermistor and resistance are simultaneously
Connection；NTC thermistor is the thermistor with negative temperature coefficient；When implementing, resistance is preferably big resistance value wire resistor；Institute
State big resistance value is defined as: the Ω of 100 Ω~300.
In the specific implementation, power factor improve circuit be serially connected in the power supply line of input on the way.
Illustrate that this power factor provided by the utility model improves the course of work and effect of circuit below:
Current-limiting resistance in the prior art is replaced with NTC thermistor.Therefore, when power circuit is that low-power exports,
Output power is lower, and the fever of thermistor is not serious, and temperature-sensitive resistance value is big at this time, and power factor is very high, can satisfy equipment
Static state view is in power consumption requirements.And when equipment full power output when, the fever of NTC thermistor is serious, resistance decrease quickly, so
It will not influence the full load efficiency of equipment.
Meanwhile the both ends of NTC thermistor and the United Nations General Assembly's resistance value wire-wound resistor, opening for equipment total temperature range class may be implemented
Dynamic and work: because NTC thermistor is affected by temperature greatly, power circuit requires to work at -45 DEG C, at this temperature
The change in resistance of NTC thermistor is more than 15 times, if the resistance value cannot be reduced, will lead to the difficulty in starting in low temperature, so
It is incorporated to the resistance of a larger resistance value.The resistance influences the resistance value of NTC thermistor smaller at room temperature or elevated temperatures, i.e. room temperature
Or when high temperature, NTC thermistor resistance value is relatively small, so the two is simultaneously after big resistance value wire resistor is in parallel with NTC thermistor
Resistance value after connection can be slightly below the resistance value of NTC thermistor, therefore the big resistance value wire resistor pair at room temperature or elevated temperatures
The resistance value of NTC thermistor influences smaller；And at low temperature, it is in parallel with wire-wound resistor which can limit NTC thermistor
Resistance value afterwards, i.e., under low temperature, the resistance value of NTC thermistor is very big, so NTC thermistor and simultaneously the United Nations General Assembly's resistance value wire resistor are simultaneously
After connection, the resistance after the two is in parallel can be slightly below big resistance value wire resistor, therefore big resistance value wire resistor can limit NTC temperature-sensitive
Resistance value after resistance is in parallel with wire-wound resistor.
Furthermore increase NTC thermistor and big resistance value wire resistor, the Surge handling capability of equipment is greatly increased, effectively
Bridge heap and rear end power conversion circuit are protected, circuit reliability of operation is enhanced.
In actual use equipment static power be 6.2W, actual test condition with test result is as follows:
Light running situation is as follows:
When not connected NTC thermistor and big resistance value wire resistor, 220VAC input, 6.2W, power factor value 0.369,
Output power 3.81W, efficiency 61.4%, apparent energy 16.6VA.Increase NTC thermistor and big resistance value wire resistor
When, input power 6.2W, power factor value 0.518 exports 3.81W, efficiency 61.4%, apparent energy 12.2VA.
Full-load run situation is as follows:
When not connected NTC thermistor and big resistance value wire resistor, 220V input, 54.4W power factor value is 0.486,
Output power 43.4W, efficiency are 79.8%, apparent energy 111.6VA.When increasing NTC thermistor and big resistance value wire resistor,
55.2W is inputted, exports 43.4W, power factor value 0.577, efficiency is 78.6%, apparent energy 95VA.
By above-mentioned test data it can be shown that when power supply underloading is with heavy duty, the power factor value and view of circuit exist
Power reforming effect is clearly.
In the specific implementation, EMC filter circuit can use EMC filter circuit as shown in Figure 6；In figure, capacitor CY3 and
CY4 is Y capacitance, is connected to two of input between power supply line and ground, is interfered for filtering common mode；Capacitor CX1~CX3 is X electricity
Hold, is attempted by between the power supply line of input, is protected for EMC and filter DM EMI；Inductance LM2 and LM1 are serially connected in power supply line
In, it protects and filters for EMC.
Current rectifying and wave filtering circuit can use circuit as shown in Figure 7: wherein by the filtered power supply letter of EMC filter circuit
Number connection rectifier bridge 2 feet and 3 feet, by rectifier bridge BD5 rectification after be converted to direct current energy, then pass through filter circuit CE1
The DC/DC power conversion circuit of rear class is input to after being filtered with CE5；Wherein resistance R71~R74 is continued flow resistance.
DC/DC power conversion circuit can using common inverse-excitation type DC/DC translation circuit on the market, such as application No. is
201720980632.8 single-end flyback switching power supply circuit；In the circuit, the effect of rectifier bridge D1~D4 is this Shen
Please in rectification circuit, capacitor C1 and C2 are the filter circuit in the current rectifying and wave filtering circuit in the application；And capacitor C1 and C2
All circuits of rear end are the DC/DC power conversion circuit suitable for the application to you.
This I type provided by the present application specially gets higher power factor power circuit, can be used for other any need and carries out I type
The electronic equipment for specially getting higher power factor power supply, including all types of measuring instrument (such as electric energy meter, water meter, gas meter, flow meter, heat
Table etc.), electric energy management terminal, distribution terminal, electric energy quality monitoring equipment, grid automation terminal, acquisition terminal, concentrator,
Data collector, measuring instrument, write by hand device, fault detector etc..
Claims (4)
1. a kind of I type specially gets higher power factor power circuit, including EMC filter circuit, current rectifying and wave filtering circuit and DC/DC power become
Change circuit, it is characterised in that: further include that power factor improves circuit；Power factor improves circuit, EMC filter circuit, rectification filter
Wave circuit and DC/DC power conversion circuit are sequentially connected in series；Power factor improves the power factor that circuit is used to improve power circuit；
EMC filter circuit is used to carry out EMC protection and filtering to the electric energy of input；Current rectifying and wave filtering circuit is used for externally input exchange
Electric energy is converted to direct current energy and is filtered；DC/DC power conversion circuit is used to convert the direct current energy after rectifying and wave-filtering
For stable DC energy and supplying power for outside.
2. I type according to claim 1 specially gets higher power factor power circuit, it is characterised in that: the power factor
Improving circuit includes NTC thermistor and resistance；NTC thermistor and resistor coupled in parallel；NTC thermistor is with negative temperature system
Several thermistors.
3. I type according to claim 2 specially gets higher power factor power circuit, it is characterised in that: the resistance is big
Resistance value wire resistor；The big resistance value is defined as: the Ω of 100 Ω~300.
4. a kind of measuring instrument, it is characterised in that: include that I type described in one of claims 1 to 3 specially gets higher power factor electricity
Source circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920143918.XU CN209184480U (en) | 2019-01-28 | 2019-01-28 | I type specially gets higher power factor power circuit and its measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920143918.XU CN209184480U (en) | 2019-01-28 | 2019-01-28 | I type specially gets higher power factor power circuit and its measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209184480U true CN209184480U (en) | 2019-07-30 |
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ID=67378977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920143918.XU Active CN209184480U (en) | 2019-01-28 | 2019-01-28 | I type specially gets higher power factor power circuit and its measuring instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617389A (en) * | 2019-01-28 | 2019-04-12 | 湖南晟和电源科技有限公司 | I type specially gets higher power factor power circuit, method of supplying power to and its measuring instrument |
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2019
- 2019-01-28 CN CN201920143918.XU patent/CN209184480U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617389A (en) * | 2019-01-28 | 2019-04-12 | 湖南晟和电源科技有限公司 | I type specially gets higher power factor power circuit, method of supplying power to and its measuring instrument |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231026 Address after: Room 101, 3rd Floor, Building 11, Phase II of Weisheng Science and Technology Park, No. 468 Tongzipo West Road, High tech Development Zone, Changsha City, Hunan Province, 410205 Patentee after: Hunan Shenghe Intelligent Control Technology Co.,Ltd. Address before: 410205 no.1-8, 3rd floor, 101, No.11 plant, phase II project, Weisheng Science Park, no.468, tongzipo West Road, high tech Development Zone, Changsha City, Hunan Province Patentee before: HUNAN SEEHRE POWER TECHNOLOGY CO.,LTD. |