CN103178582A - Power frequency online uninterruptible power supply with function of power factor correction - Google Patents
Power frequency online uninterruptible power supply with function of power factor correction Download PDFInfo
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- CN103178582A CN103178582A CN201310078866XA CN201310078866A CN103178582A CN 103178582 A CN103178582 A CN 103178582A CN 201310078866X A CN201310078866X A CN 201310078866XA CN 201310078866 A CN201310078866 A CN 201310078866A CN 103178582 A CN103178582 A CN 103178582A
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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 invention discloses a power frequency online uninterruptible power supply with a function of power factor correction. The uninterruptible power supply comprises a rectifier, a storage battery, a charger, an inverter and a power factor correction circuit. Output ends of the rectifier and the storage battery are coupled to an input end of the power factor correction circuit. Input ends of the charger and the inverter are coupled to an output end of the power factor correction circuit. Due to the fact that the power factor correction technology is used, input power factor can reach more than 0.99, harmonic THDI (total harmonic distortion) value of input current is lowered effectively, harmonic pollution fed back to a power grid by the uninterruptible power supply is eliminated, utilization rate of the power grid is increased, and operation cost of the uninterruptible power supply is lowered.
Description
Technical field
The present invention relates to uninterrupted power supply, relate in particular to a kind of power frequency on-Line UPS with power factor emendation function.
Background technology
On-Line UPS generally is divided into two kinds, power frequency on-Line UPS and high frequency on-Line UPS.The power frequency uninterrupted power supply is because inside has an isolating transformer, and this transformer is absolutely necessary on topology design, and transformer is the full-bridge inverting inalienable part.And the high frequency uninterrupted power supply generally adopts the half-bridge inversion circuit design, the no-output isolating transformer, but have BOOST PFC correcting circuit.
The basic structure of tradition power frequency uninterrupted power supply comprises rectifier, storage battery, charger, inverter, output isolation transformer as shown in Figure 1, and wherein rectifier is silicon controlled rectifier, and inverter is the IGBT inverter.
Novel high-frequency uninterrupted power supply basic structure comprises rectifier, DC/DC multiplication of voltage link, storage battery, charger and inverter as shown in Figure 2, and wherein rectifier is not for controlling rectification.
The high frequency uninterrupted power supply has following outstanding advantages for the power frequency uninterrupted power supply: lightweight, volume is little, input power factor is high, environmental protection; And the power frequency uninterrupted power supply has better overload capacity, impact resistance etc.
Along with the development of power electronic technology, the application of IGBT commutation technique is more and more extensive, and very large variation has also occured the structure of uninterrupted power supply.Popular big-and-middle-sized uninterrupted power supply structure turns to more rational IGBT rectification new structure gradually by original old-fashioned structure (6 arteries and veins rectifications or 12 arteries and veins rectifications) at present.The disadvantage of silicon controlled rectifier is exactly the interference problem to electrical network, due to time routed pollution that input copped wave produces, usually can only adopt additional input power factor compensation tache or filter, increases the umber of pulse of rectifier.So not only increased the expense of buying uninterrupted power supply, effect is also undesirable simultaneously, has virtually increased again a fault point.And novel full IGBT rectification can be brought up to power factor near 1 easily, has fundamentally solved electrical network is returned the problem of bursting and disturbing.
But, for the middle low power uninterrupted power supply, adopt the IGBT commutation technique with high costs, control circuit is complicated, poor stability.
Summary of the invention
The object of the present invention is to provide a kind of power frequency on-Line UPS with Active PFC function, when this power supply keeps power frequency uninterrupted power supply advantage, solved traditional middle low power uninterrupted power supply input power factor low, the problem that harmonic pollution is serious.
For reaching this purpose, the present invention by the following technical solutions:
A kind of power frequency on-Line UPS with power factor emendation function, comprise rectifier, storage battery, charger and inverter, also comprise circuit of power factor correction, the output of described rectifier and storage battery is coupled to the input of circuit of power factor correction, and the input of described charger and inverter is coupled to the output of circuit of power factor correction.
Wherein, also comprise dsp chip, described rectifier, circuit of power factor correction and inverter are controlled by dsp chip.
Wherein, described dsp chip is the high-speed dsp control chip.
Wherein, described rectifier comprises the first rectification thyristor SCR1, the second rectification thyristor SCR2, the 3rd rectification thyristor SCR3, the 4th rectification thyristor SCR4; Civil power input L and the anode of the first rectification thyristor SCR1, the negative electrode of the 4th rectification thyristor SCR4 are coupled; Civil power input N and the anode of the second rectification thyristor SCR2, the negative electrode of the 3rd rectification thyristor SCR3 are coupled; The negative electrode of the negative electrode of the first rectification thyristor SCR1, the second rectification thyristor SCR2 is coupled; The anode of the anode of the 3rd rectification thyristor SCR3, the 4th rectification thyristor SCR4 and the negative pole of storage battery are coupled.
Wherein, described power factor circuit is the framework of a kind of single BOOST, comprise inductance L, diode D, the first control switch diode D1, the first insulated gate bipolar transistor Q1, bus capacitor C1, the negative electrode of the input of inductance L and the second rectification thyristor SCR2 is coupled, and negative electrode and the collector coupled of the first insulated gate bipolar transistor Q1 of the anode of the output of inductance L, diode D, the first control switch diode D1 are in the same place; The anode of the first control switch diode D1, the emitter of the first insulated gate bipolar transistor Q1, the end of bus capacitor C1 and the negative pole of storage battery are coupled, and the negative electrode of the other end of bus capacitor C1 and diode D is coupled.
Wherein, described inverter comprises the second control switch diode D2, the second insulated gate bipolar transistor Q2, the 3rd control switch diode D3, the 3rd insulated gate bipolar transistor Q3, the 4th control switch diode D4, the 4th insulated gate bipolar transistor Q4, the 5th control switch diode D5, the 5th insulated gate bipolar transistor Q5; The negative electrode of the negative electrode of described the second control switch diode D2, the collector electrode of the second insulated gate bipolar transistor Q2, the 4th control switch diode D4, the collector electrode of the 4th insulated gate bipolar transistor Q4 and the negative electrode of diode D are coupled; The negative electrode of the anode of described the second control switch diode D2, the emitter of the second insulated gate bipolar transistor Q2, the 3rd control switch diode D3, the collector coupled of the 3rd insulated gate bipolar transistor Q3 are together; The negative electrode of the anode of described the 4th control switch diode D4, the emitter of the 4th insulated gate bipolar transistor Q4, the 5th control switch diode D5, the collector coupled of the 5th insulated gate bipolar transistor Q5 are together; The anode of the anode of described the 3rd control switch diode D3, the emitter of the 3rd insulated gate bipolar transistor Q3, the 5th control switch diode D5, the emitter of the 5th insulated gate bipolar transistor Q5 and the negative pole of storage battery are coupled.
Wherein, also comprise relay R ELAY1 and controlled cell switch controllable silicon SCR 5, the normal battle of the negative electrode of described controlled cell switch controllable silicon SCR 5, relay R ELAY1 and the input of inductance L are coupled; The normally closed point of the anode of controlled cell switch controllable silicon SCR 5, relay R ELAY1 and the positive pole of storage battery are coupled.
Beneficial effect of the present invention is: the power frequency on-Line UPS of the improvement structure that the present invention proposes, this structure uninterrupted power supply increases the one-level circuit of power factor correction on traditional power frequency uninterrupted power supply architecture basics, civil power boosts by overpower factor correcting circuit DC/DC through rectification, then exports via the inverter inversion.Owing to having adopted power factor correction technology, input power factor reaches more than 0.99, effectively reduces Harmonics of Input THDI value, has eliminated greatly the harmonic pollution of uninterrupted power supply feedback grid, also improve simultaneously the utilance to electrical network, reduced the operating cost of uninterrupted power supply.The characteristics such as power frequency uninterrupted power supply load capacity is strong, strong shock resistance have been kept again simultaneously.
Description of drawings
Fig. 1 is the functional-block diagram of traditional power frequency uninterrupted power supply;
Fig. 2 is the functional-block diagram of novel high-frequency uninterrupted power supply;
Fig. 3 is a kind of functional-block diagram with power frequency on-Line UPS of power factor emendation function of the present invention;
Fig. 4 is a kind of circuit diagram with power frequency on-Line UPS of power factor emendation function of the present invention;
Fig. 5 is the circuit diagram of the rectification circuit of a kind of power frequency on-Line UPS with power factor emendation function of the present invention;
Fig. 6 is the circuit diagram of the circuit of power factor correction of a kind of power frequency on-Line UPS with power factor emendation function of the present invention;
Fig. 7 is the circuit diagram of the inverter circuit of a kind of power frequency on-Line UPS with power factor emendation function of the present invention.
Embodiment
Further illustrate technical scheme of the present invention below in conjunction with accompanying drawing and by embodiment.
The present invention is a kind of have power factor emendation function the power frequency on-Line UPS the first embodiment as shown in Figure 3, comprise rectifier, storage battery, charger and inverter, also comprise circuit of power factor correction, the output of described rectifier and storage battery is coupled to the input of circuit of power factor correction, and the input of described charger and inverter is coupled to the output of circuit of power factor correction.
Comparison diagram 1 and Fig. 3, the present invention increase the one-level circuit of power factor correction on traditional power frequency uninterrupted power supply architecture basics, civil power boosts by overpower factor correcting circuit DC/DC through rectification, then exports via the inverter inversion.Owing to having adopted power factor correction technology, input power factor reaches more than 0.99, effectively reduces Harmonics of Input THDI value, has eliminated greatly the harmonic pollution of uninterrupted power supply feedback grid, also improve simultaneously the utilance to electrical network, reduced the operating cost of uninterrupted power supply.The characteristics such as power frequency uninterrupted power supply load capacity is strong, strong shock resistance have been kept again simultaneously.
As preferred embodiment a kind of, a kind of power frequency on-Line UPS with power factor emendation function of the present invention also comprises dsp chip, and the various piece of described uninterrupted power supply comprises that described rectifier, circuit of power factor correction and inverter complete control by dsp chip.
Described dsp chip is the high-speed dsp control chip.
The control of described uninterrupted power supply rectifier, circuit of power factor correction, inverter all adopts the high-speed dsp chip to complete control, and speed is fast, precision is high, and control circuit is simple, and is reliable, stable.
As another preferred embodiment, the present invention is a kind of has the circuit theory diagrams of power frequency on-Line UPS of power factor emendation function such as Fig. 4 to shown in Figure 7.The rectification circuit of described rectifier comprises the first rectification thyristor SCR1, the second rectification thyristor SCR2, the 3rd rectification thyristor SCR3, the 4th rectification thyristor SCR4; Civil power input L and the anode of the first rectification thyristor SCR1, the negative electrode of the 4th rectification thyristor SCR4 are coupled; Civil power input N and the anode of the second rectification thyristor SCR2, the negative electrode of the 3rd rectification thyristor SCR3 are coupled; The negative electrode of the negative electrode of the first rectification thyristor SCR1, the second rectification thyristor SCR2 is coupled; The anode of the anode of the 3rd rectification thyristor SCR3, the 4th rectification thyristor SCR4 and the negative pole of storage battery are coupled.
Described power factor circuit is the framework of a kind of single BOOST, comprise inductance L, diode D, the first control switch diode D1, the first insulated gate bipolar transistor Q1, bus capacitor C1, the negative electrode of the input of inductance L and the second rectification thyristor SCR2 is coupled, and negative electrode and the collector coupled of the first insulated gate bipolar transistor Q1 of the anode of the output of inductance L, diode D, the first control switch diode D1 are in the same place; The anode of the first control switch diode D1, the emitter of the first insulated gate bipolar transistor Q1, the end of bus capacitor C1 and the negative pole of storage battery are coupled, and the negative electrode of the other end of bus capacitor C1 and diode D is coupled.
The inverter circuit of described inverter comprises the second control switch diode D2, the second insulated gate bipolar transistor Q2, the 3rd control switch diode D3, the 3rd insulated gate bipolar transistor Q3, the 4th control switch diode D4, the 4th insulated gate bipolar transistor Q4, the 5th control switch diode D5, the 5th insulated gate bipolar transistor Q5; The negative electrode of the negative electrode of described the second control switch diode D2, the collector electrode of the second insulated gate bipolar transistor Q2, the 4th control switch diode D4, the collector electrode of the 4th insulated gate bipolar transistor Q4 and the negative electrode of diode D are coupled; The negative electrode of the anode of described the second control switch diode D2, the emitter of the second insulated gate bipolar transistor Q2, the 3rd control switch diode D3, the collector coupled of the 3rd insulated gate bipolar transistor Q3 are together; The negative electrode of the anode of described the 4th control switch diode D4, the emitter of the 4th insulated gate bipolar transistor Q4, the 5th control switch diode D5, the collector coupled of the 5th insulated gate bipolar transistor Q5 are together; The anode of the anode of described the 3rd control switch diode D3, the emitter of the 3rd insulated gate bipolar transistor Q3, the 5th control switch diode D5, the emitter of the 5th insulated gate bipolar transistor Q5 and the negative pole of storage battery are coupled.
Described uninterrupted power supply also comprises relay R ELAY1 and controlled cell switch controllable silicon SCR 5, and the normal battle of the negative electrode of described controlled cell switch controllable silicon SCR 5, relay R ELAY1 and the input of inductance L are coupled; The normally closed point of the anode of controlled cell switch controllable silicon SCR 5, relay R ELAY1 and the positive pole of storage battery are coupled.
in the present embodiment, described uninterrupted power supply has increased one-level power factor correction link on the basis of traditional uninterrupted power supply, diode corresponding to each insulated gate bipolar transistor and numbering forms a control switch, therefore the first control switch K1 is arranged in circuit, the second control switch K2, the 3rd control switch K3, the 4th control switch K4 and the 5th control switch K5, the first control switch K1 is the second control switch K2 wherein, the 3rd control switch K3, the 4th control switch K4 and the 5th control switch K5 belong to inverter circuit, now the prior art in conjunction with uninterrupted power supply is described as follows its overall work principle:
Normal mode of operation: civil power is inputted through rectification circuit AC/DC conversion, after enter circuit of power factor correction and realize that DC/DC boosts; Then by inverter DC/AC conversion, output to load by isolating transformer.In this process, charge a battery by charger simultaneously.
Battery mode: when normal alternating current input power supplying exceeds uninterrupted power supply design input range or power down, realize that through circuit of power factor correction DC/DC boosts by storage battery.Then by inverter DC/AC conversion, output to load by isolating transformer.When AC power recovered normal, uninterrupted power supply transferred the civil power mode of operation automatically to; And to battery recharge.
Static by-pass pattern: (comprise overload, excess temperature etc.) when fault of uninterrupted power source, and in the situation that civil power is arranged, uninterrupted power supply changes the static by-pass pattern automatically over to; The civil power input outputs to load through static bypass switch STS.
Maintenance bypass pattern: when uninterrupted power supply need to be safeguarded or keep in repair, can load be switched to maintenance bypass by hand switch S, thereby guarantee that user load does not cut off the power supply.
The connected mode of the maintenance bypass of described uninterrupted power supply, static by-pass, output isolation transformer and prior art are identical or similar, therefore repeat no more.
Know-why of the present invention has below been described in conjunction with specific embodiments.These are described just in order to explain principle of the present invention, and can not be interpreted as by any way limiting the scope of the invention.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present invention, within these modes all will fall into protection scope of the present invention.
Claims (7)
1. power frequency on-Line UPS with power factor emendation function, comprise rectifier, storage battery, charger and inverter, it is characterized in that, comprise circuit of power factor correction, the output of described rectifier and storage battery is coupled to the input of circuit of power factor correction, and the input of described charger and inverter is coupled to the output of circuit of power factor correction.
2. a kind of power frequency on-Line UPS with power factor emendation function according to claim 1, is characterized in that, also comprise dsp chip, described rectifier, circuit of power factor correction and inverter are controlled by dsp chip.
3. a kind of power frequency on-Line UPS with power factor emendation function according to claim 2, is characterized in that, described dsp chip is the high-speed dsp control chip.
4. a kind of power frequency on-Line UPS with power factor emendation function according to claim 1, it is characterized in that, described rectifier comprises the first rectification thyristor SCR1, the second rectification thyristor SCR2, the 3rd rectification thyristor SCR3, the 4th rectification thyristor SCR4; Civil power input L and the anode of the first rectification thyristor SCR1, the negative electrode of the 4th rectification thyristor SCR4 are coupled; Civil power input N and the anode of the second rectification thyristor SCR2, the negative electrode of the 3rd rectification thyristor SCR3 are coupled; The negative electrode of the negative electrode of the first rectification thyristor SCR1, the second rectification thyristor SCR2 is coupled; The anode of the anode of the 3rd rectification thyristor SCR3, the 4th rectification thyristor SCR4 and the negative pole of storage battery are coupled.
5. a kind of power frequency on-Line UPS with power factor emendation function according to claim 4, it is characterized in that, described power factor circuit is the framework of a kind of single BOOST, comprise inductance L, diode D, the first control switch diode D1, the first insulated gate bipolar transistor Q1, bus capacitor C1, the negative electrode of the input of inductance L and the second rectification thyristor SCR2 is coupled, the output of inductance L, the anode of diode D, the negative electrode of the first control switch diode D1 is in the same place with the collector coupled of the first insulated gate bipolar transistor Q1, the anode of the first control switch diode D1, the emitter of the first insulated gate bipolar transistor Q1, the end of bus capacitor C1 and the negative pole of storage battery are coupled, and the negative electrode of the other end of bus capacitor C1 and diode D is coupled.
6. a kind of power frequency on-Line UPS with power factor emendation function according to claim 5, it is characterized in that, described inverter comprises the second control switch diode D2, the second insulated gate bipolar transistor Q2, the 3rd control switch diode D3, the 3rd insulated gate bipolar transistor Q3, the 4th control switch diode D4, the 4th insulated gate bipolar transistor Q4, the 5th control switch diode D5, the 5th insulated gate bipolar transistor Q5; The negative electrode of the negative electrode of described the second control switch diode D2, the collector electrode of the second insulated gate bipolar transistor Q2, the 4th control switch diode D4, the collector electrode of the 4th insulated gate bipolar transistor Q4 and the negative electrode of diode D are coupled; The negative electrode of the anode of described the second control switch diode D2, the emitter of the second insulated gate bipolar transistor Q2, the 3rd control switch diode D3, the collector coupled of the 3rd insulated gate bipolar transistor Q3 are together; The negative electrode of the anode of described the 4th control switch diode D4, the emitter of the 4th insulated gate bipolar transistor Q4, the 5th control switch diode D5, the collector coupled of the 5th insulated gate bipolar transistor Q5 are together; The anode of the anode of described the 3rd control switch diode D3, the emitter of the 3rd insulated gate bipolar transistor Q3, the 5th control switch diode D5, the emitter of the 5th insulated gate bipolar transistor Q5 and the negative pole of storage battery are coupled.
7. a kind of power frequency on-Line UPS with power factor emendation function according to claim 6, it is characterized in that, also comprise relay R ELAY1 and controlled cell switch controllable silicon SCR 5, the normal battle of the negative electrode of described controlled cell switch controllable silicon SCR 5, relay R ELAY1 and the input of inductance L are coupled; The normally closed point of the anode of controlled cell switch controllable silicon SCR 5, relay R ELAY1 and the positive pole of storage battery are coupled.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105591561A (en) * | 2014-11-25 | 2016-05-18 | 海信（山东）空调有限公司 | Power supply circuit and power supply device |
| WO2016112784A1 (en) * | 2015-01-13 | 2016-07-21 | 伊顿制造（格拉斯哥）有限合伙莫尔日分支机构 | Uninterrupted power supply and control method thereof |
| CN106253456A (en) * | 2016-08-01 | 2016-12-21 | 合肥联信电源有限公司 | A kind of high-power emergency power supply static state is released panel protection circuit |
| CN106602902A (en) * | 2016-12-02 | 2017-04-26 | 安徽波维电子科技有限公司 | Special rectification module for electronic rectifier |
| CN107785987A (en) * | 2016-08-25 | 2018-03-09 | 伊顿制造（格拉斯哥）有限合伙莫尔日分支机构 | On-Line UPS |
| CN109510489A (en) * | 2018-12-22 | 2019-03-22 | 深圳市捷益达电子有限公司 | A kind of the uninterruptible power supply rectification circuit and its working method of wide input range |
| TWI736202B (en) * | 2020-02-06 | 2021-08-11 | 碩天科技股份有限公司 | On-line uninterruptible power system and operation method thereof |
| CN113422519A (en) * | 2021-06-09 | 2021-09-21 | 深圳市云林电气技术有限公司 | Frequency converter topology based on harmonic compensation, control method and frequency converter |
| CN113555953A (en) * | 2021-08-03 | 2021-10-26 | 厦门市爱维达电子有限公司 | Novel power frequency UPS power supply |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105591561A (en) * | 2014-11-25 | 2016-05-18 | 海信（山东）空调有限公司 | Power supply circuit and power supply device |
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| CN106253456A (en) * | 2016-08-01 | 2016-12-21 | 合肥联信电源有限公司 | A kind of high-power emergency power supply static state is released panel protection circuit |
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| CN109510489A (en) * | 2018-12-22 | 2019-03-22 | 深圳市捷益达电子有限公司 | A kind of the uninterruptible power supply rectification circuit and its working method of wide input range |
| TWI736202B (en) * | 2020-02-06 | 2021-08-11 | 碩天科技股份有限公司 | On-line uninterruptible power system and operation method thereof |
| US11183870B2 (en) | 2020-02-06 | 2021-11-23 | Cyber Power Systems, Inc. | On-line uninterruptible power system and operation method thereof |
| CN113422519A (en) * | 2021-06-09 | 2021-09-21 | 深圳市云林电气技术有限公司 | Frequency converter topology based on harmonic compensation, control method and frequency converter |
| CN113555953A (en) * | 2021-08-03 | 2021-10-26 | 厦门市爱维达电子有限公司 | Novel power frequency UPS power supply |
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