CN203933382U - A kind of APFC of tape jam measuring ability - Google Patents
A kind of APFC of tape jam measuring ability Download PDFInfo
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- CN203933382U CN203933382U CN201420276700.9U CN201420276700U CN203933382U CN 203933382 U CN203933382 U CN 203933382U CN 201420276700 U CN201420276700 U CN 201420276700U CN 203933382 U CN203933382 U CN 203933382U
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- 238000005070 sampling Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract description 2
- 239000003990 capacitor Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
The APFC of a kind of tape jam measuring ability described in the utility model, comprise EMI filter circuit, rectifier bridge, BOOST active PFC circuit, accessory power supply and PFC control circuit, the input of EMI filter circuit is connected with civil power, output is connected with the input of rectifier bridge, the output of rectifier bridge is connected with the input of BOOST active PFC circuit, the output external load of BOOST active PFC circuit, the output of the input of described accessory power supply and EMI filter circuit, the ac input end of rectifier bridge is connected, the output of accessory power supply is connected with the feeder ear of PFC control circuit, the drive output of PFC control circuit is connected with BOOST active PFC circuit.Circuit described in the utility model is simple, power factor that good wave filtering effect, antijamming capability be strong, improved electricity consumption, has reduced the harmonic pollution to electric power system.
Description
Technical field
The utility model relates to electric and electronic technical field, is specifically related to a kind of APFC of tape jam measuring ability.
Background technology
In recent years, Switching Power Supply is low with its cost, efficiency is high, volume is little, lightweight etc., and many advantages obtains develops rapidly, and its application also spreads all over the fields such as daily life, industrial production and military equipment.But Switching Power Supply also has its weak point, as adopt the Switching Power Supply of traditional non-control rectifier system, its power factor is extremely low, and harmonic content is very high, has brought serious harmonic pollution to electric power system.Larger harmonic pollution, not only can exert an influence to the normal operation of other power consumption equipment, also may cause Electrical Safety hidden danger.For this reason, International Electrotechnical Commission has just formulated IEC1000-3-2 standard in the early 1990s, and the power factor that strictly limits equipment must be close to 1.APFC can effectively be administered harmonic pollution in electric power net, can improve again the efficiency of Switching Power Supply simultaneously.The shortcomings such as but currently used APFC, has circuit complexity, maintenance detects inconvenient, and antijamming capability is weak.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of APFC of tape jam measuring ability, this circuit is simple, power factor that good wave filtering effect, antijamming capability be strong, improved electricity consumption, has reduced the harmonic pollution to electric power system.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of APFC of tape jam measuring ability, comprise EMI filter circuit, rectifier bridge, BOOST active PFC circuit, accessory power supply and PFC control circuit, the input of described EMI filter circuit is connected with civil power, its output is connected with the input of rectifier bridge, the DC output end of rectifier bridge is connected with the input of BOOST active PFC circuit, the output external load of BOOST active PFC circuit, the output of the input of described accessory power supply and EMI filter circuit, the ac input end of rectifier bridge is connected, the output of accessory power supply is connected with the feeder ear of PFC control circuit, the drive output of PFC control circuit is connected with BOOST active PFC circuit.
Described BOOST active PFC circuit comprises controller, voltage sampling circuit and failure detector circuit, and described voltage sampling circuit is made up of the first resistance and the second resistance; Failure detector circuit is connected by the first resistance and controller, and the node between the first resistance and controller passes through the second grounding through resistance.
Described failure detector circuit is made up of photoelectrical coupler, two electric capacity, precision regulator and multiple resistance; One end of the 3rd resistance is connected with the first resistance, and the other end is by two the 4th resistance and the first capacity earths parallel with one another; The anode of precision regulator and reference edge are connected to earth terminal and the other end of the first electric capacity, and its negative electrode is connected with power supply high level by the second electric capacity, the 5th resistance successively, and the 6th resistance is connected in parallel on the second electric capacity two ends; The positive input of photoelectrical coupler is connected between the 5th resistance and the 6th resistance, and its reverse input end is connected with the negative electrode of precision regulator.
Described controller adopts ICE1PCS02G chip.
The beneficial effects of the utility model are: the APFC the utility model proposes, its superior performance, debugging are simple, reliable operation and defencive function complete.By using active circuit of power factor correction, the capacity that not only makes to input energy storage capacitor subtracts and is a half, but also adjusted the stability of system, when load change or input voltage in the time that allowed band changes, all can not affect the stability of DC loop.In addition, the failure detector circuit in PFC control circuit also provides important leverage to the reliability service of late-class circuit, and the reliability of whole power supply is strengthened.
Brief description of the drawings
Fig. 1 is circuit block diagram of the present utility model;
Fig. 2 is EMI filter circuit of the present utility model;
Fig. 3 is the utility model BOOST active PFC circuit;
Fig. 4 is the utility model PFC control circuit.
Embodiment
Below in conjunction with accompanying drawing, the utility model will be further described.
A kind of APFC of tape jam measuring ability, comprise EMI filter circuit, rectifier bridge, BOOST active PFC circuit, accessory power supply and PFC control circuit, the input of described EMI filter circuit is connected with civil power, its output is connected with the input of rectifier bridge, the DC output end of rectifier bridge is connected with the input of Boost active PFC circuit, the output external load of Boost active PFC circuit, the output of the input of accessory power supply and EMI filter circuit, the ac input end of rectifier circuit is connected, the output of accessory power supply is connected with the feeder ear of PFC control circuit, the drive output of PFC control circuit is connected with Boost active PFC circuit, the output of Boost active PFC circuit can connect DC/DC translation circuit or other load circuits.Civil power carries out filtering by EMI filter circuit, filtered civil power converts alternating current to direct current by rectifier bridge, and realize power factor correction by Boost active PFC circuit and PFC control circuit, active PFC control circuit is sampled to input voltage and input current, make input current follow input voltage, thereby realize power factor correction object, wherein accessory power supply is mainly used in powering to PFC control circuit.
Power switch pipe in APFC turns on and off and can produce significantly voltage and current saltus step under high frequency, thereby produces very strong electromagnetic interference.Electromagnetic interference can exert an influence to the normal work of product, as disturbs excessively, even can cause the operation irregularity of control circuit, therefore must suppress the electromagnetic interference of power supply.EMI filtering is to suppress the effective means of electromagnetic interference, and it not only can suppress the electromagnetic interference of electrical network, can also suppress the electromagnetic interference of power supply itself simultaneously, so that electrical network is not contaminated.Input EMI filter circuit can not only filtering differential mode interference, can also disturb by filtering common mode.As shown in Figure 2, EMI filter circuit comprises common mode inductance L1, four capacitor C 1, C2, C3 and C4, the input of the same name of inductance L 1 gets access to grid respectively or civil power, capacitor C 1 is connected in parallel on the input of the same name of inductance L 1, the output of inductance L 1 is connected with the ac input end of rectifier bridge by capacitor C 2, two capacitor C that are in series 3, capacitor C 4 successively, and the common port of capacitor C 3 and C4 is connected with the earth.
In the power factor correction of single-phase input switch power supply, Boost active PFC circuit is simple with its circuit, efficiency is high, suitable power is high and can realize DC/DC converter and input the plurality of advantages such as pre-voltage stabilizing and obtain extensive use.Fig. 3 is the schematic diagram of Boost active PFC circuit, the groundwork principle of Boost active PFC circuit is to force input current to follow input voltage by control circuit, thereby realize unity power factor, realize the pre-voltage stabilizing of PFC output voltage simultaneously by feedback output voltage.
The control circuit of active PFC is taked the control mode based on " multiplier " mostly.By input voltage and input current are sampled, and force input current to follow input voltage, thereby realize the object of power factor correction.According to the difference of input current sampling, the control based on " multiplier " is divided into again peak current control, Average Current Control and hysteresis current control.This power supply is selected Average Current Control mode, adopt Average Current Control mode have switching frequency constant, do not need harmonic compensation, strong to the antijamming capability of rectification noise, can obtain the advantages such as better input current waveform; Its control chip adopts ICE1PCS02G, and this chip has input undervoltage protection, output over-voltage protection and open loop protection, the soft advantages such as current control and peak current limit of crossing; Fig. 4 is the PFC control circuit based on control chip ICE1PCS02G.As shown in Figure 4, in PFC control circuit, add the failure detector circuit of PFC, and adopt photoelectric coupler isolation.In the time of pfc circuit fault, send PFC fault-signal to control circuit by optocoupler, make the DC/DC translation circuit shutdown of control circuit to follow-up connection, to reach the object of protection late-class circuit.Pin one GND and the 7VCC of control chip N1 connect power supply circuits, and pin two ICOMP is by capacitor C 3 ground connection for current compensation; The external input undervoltage protection circuit of pin 4VINS; pin 5VCOMP external voltage compensating circuit; pin 6VSENSE is connected with output voltage sampling circuit; output voltage sampling is made up of resistance R 6 and resistance R 7; wherein output voltage is connected with control chip N1 by the first resistance R 6, and the node between the first resistance R 6 and controller N1 is by the second resistance R 7 ground connection.Failure detector circuit 2 is made up of photoelectrical coupler N3, capacitor C 7, capacitor C 8, precision regulator N2 and resistance R 8, resistance R 9, resistance R 10, resistance R 11; One end of the 3rd resistance R 8 is connected with the first resistance R 6, and the other end is by two the 4th resistance R 9 parallel with one another and the first capacitor C 7 ground connection; The anode of precision regulator N2 and reference edge are connected to earth terminal and the other end of the first capacitor C 7, and its negative electrode is connected with power supply high level by the second capacitor C 8, the 5th resistance R 10 successively, and the 6th resistance R 11 is connected in parallel on the second capacitor C 8 two ends; The positive input of photoelectrical coupler N3 is connected between the 5th resistance R 10 and the 6th resistance R 11, and its reverse input end is connected with the negative pole of precision regulator N2.The control chip that the utility model adopts not is programmable chip, mainly realizes the improved APFC of the utility model by hardware circuit.
This APFC superior performance, debugging are simple, reliable operation and defencive function complete.By using active circuit of power factor correction, the capacity that not only makes to input energy storage capacitor subtracts and is a half, but also adjusted the stability of system, when load change or input voltage in the time that allowed band changes, all can not affect the stability of DC loop.In addition, the failure detector circuit in PFC control circuit also provides important leverage to the reliability service of rear class DC/DC translation circuit, and the reliability of whole power supply is strengthened.
Claims (4)
1. the APFC of a tape jam measuring ability, it is characterized in that: comprise EMI filter circuit, rectifier bridge, BOOST active PFC circuit, accessory power supply and PFC control circuit, the input of described EMI filter circuit is connected with civil power, its output is connected with the input of rectifier bridge, the DC output end of rectifier bridge is connected with the input of BOOST active PFC circuit, the output external load of BOOST active PFC circuit, the output of the input of described accessory power supply and EMI filter circuit, the ac input end of rectifier bridge is connected, the output of accessory power supply is connected with the feeder ear of PFC control circuit, the drive output of PFC control circuit is connected with BOOST active PFC circuit.
2. the APFC of a kind of tape jam measuring ability according to claim 1, it is characterized in that: described BOOST active PFC circuit comprises controller (N1), voltage sampling circuit (1) and failure detector circuit (2), described voltage sampling circuit (1) is made up of the first resistance (R6) and the second resistance (R7); Failure detector circuit (2) is connected by the first resistance (R6) and controller (N1), and the node between the first resistance (R6) and controller (N1) passes through the second resistance (R7) ground connection.
3. the APFC of a kind of tape jam measuring ability according to claim 2, is characterized in that: described failure detector circuit (2) is made up of photoelectrical coupler (N3), two electric capacity (C7, C8), precision regulator (N2) and multiple resistance (R8, R9, R10, R11); One end of the 3rd resistance (R8) is connected with the first resistance (R6), and the other end is by two the 4th resistance (R9) parallel with one another and the first electric capacity (C7) ground connection; The anode of precision regulator (N2) and reference edge are connected to earth terminal and the other end of the first electric capacity (C7), its negative electrode is connected with power supply high level by the second electric capacity (C8), the 5th resistance (R10) successively, and the 6th resistance (R11) is connected in parallel on the second electric capacity (C8) two ends; The positive input of photoelectrical coupler (N3) is connected between the 5th resistance (R10) and the 6th resistance (R11), and its reverse input end is connected with the negative electrode of precision regulator (N2).
4. the APFC of a kind of tape jam measuring ability according to claim 2, is characterized in that: described controller adopts ICE1PCS02G chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420276700.9U CN203933382U (en) | 2014-05-28 | 2014-05-28 | A kind of APFC of tape jam measuring ability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420276700.9U CN203933382U (en) | 2014-05-28 | 2014-05-28 | A kind of APFC of tape jam measuring ability |
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| CN203933382U true CN203933382U (en) | 2014-11-05 |
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| CN201420276700.9U Expired - Fee Related CN203933382U (en) | 2014-05-28 | 2014-05-28 | A kind of APFC of tape jam measuring ability |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103997199A (en) * | 2014-05-28 | 2014-08-20 | 合肥华耀电子工业有限公司 | Active power factor correction circuit with fault detection function |
| CN108469559A (en) * | 2018-03-13 | 2018-08-31 | 广东美的制冷设备有限公司 | Method for diagnosing faults, the device of power factor corrector for air conditioner |
| CN112303865A (en) * | 2020-11-24 | 2021-02-02 | 珠海格力电器股份有限公司 | Air conditioner fault-tolerant circuit, air conditioning unit and control method |
| CN114325164A (en) * | 2021-11-24 | 2022-04-12 | 合肥工业大学 | Multi-fault diagnosis method for single-phase three-level rectifier |
-
2014
- 2014-05-28 CN CN201420276700.9U patent/CN203933382U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103997199A (en) * | 2014-05-28 | 2014-08-20 | 合肥华耀电子工业有限公司 | Active power factor correction circuit with fault detection function |
| CN108469559A (en) * | 2018-03-13 | 2018-08-31 | 广东美的制冷设备有限公司 | Method for diagnosing faults, the device of power factor corrector for air conditioner |
| CN112303865A (en) * | 2020-11-24 | 2021-02-02 | 珠海格力电器股份有限公司 | Air conditioner fault-tolerant circuit, air conditioning unit and control method |
| CN112303865B (en) * | 2020-11-24 | 2024-04-12 | 珠海格力电器股份有限公司 | Air conditioner fault-tolerant circuit, air conditioner unit and control method |
| CN114325164A (en) * | 2021-11-24 | 2022-04-12 | 合肥工业大学 | Multi-fault diagnosis method for single-phase three-level rectifier |
| CN114325164B (en) * | 2021-11-24 | 2023-03-10 | 合肥工业大学 | Multi-fault diagnosis method for single-phase three-level rectifier |
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| 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: 20141105 |