CN103178582B - A kind of power frequency on-Line UPS with power factor emendation function - Google Patents
A kind of power frequency on-Line UPS with power factor emendation function Download PDFInfo
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- CN103178582B CN103178582B CN201310078866.XA CN201310078866A CN103178582B CN 103178582 B CN103178582 B CN 103178582B CN 201310078866 A CN201310078866 A CN 201310078866A CN 103178582 B CN103178582 B CN 103178582B
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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
Abstract
The invention discloses a kind of power frequency on-Line UPS with power factor emendation function, this uninterrupted power supply comprises 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.Owing to have employed power factor correction technology, input power factor reaches more than 0.99, effectively reduces Harmonics of Input THDI value, eliminates the harmonic pollution of uninterrupted power supply feedback grid greatly, also improve the utilance to electrical network simultaneously, reduce the operating cost of uninterrupted power supply.
Description
Technical field
The present invention relates to uninterrupted power supply, particularly relate to a kind of power frequency on-Line UPS with power factor emendation function.
Background technology
On-Line UPS is generally divided into two kinds, power frequency on-Line UPS and high frequency on-Line UPS.Power frequency uninterrupted power supply has an isolating transformer due to inside, and this transformer is absolutely necessary in topology design, and transformer is full-bridge inverting inalienable part.And high frequency uninterrupted power supply generally adopts half-bridge inversion circuit to design, no-output isolating transformer, but there is BOOSTPFC correcting circuit.
As shown in Figure 1, comprise rectifier, storage battery, charger, inverter, output isolation transformer, wherein rectifier is silicon controlled rectifier to the basic structure of tradition power frequency uninterrupted power supply, and inverter is IGBT inverter.
As shown in Figure 2, comprise rectifier, DC/DC multiplication of voltage link, storage battery, charger and inverter, wherein rectifier is uncontrollable rectifier to novel high-frequency uninterrupted power supply basic structure.
High frequency uninterrupted power supply, for power frequency uninterrupted power supply, has following outstanding advantages: lightweight, volume is little, input power factor is high, environmental protection; And 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 the structure of uninterrupted power supply also has a very large change.Big-and-middle-sized uninterrupted power supply structure popular at present 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).The disadvantage of silicon controlled rectifier is exactly the interference problem to electrical network, and what produce due to input copped wave returns pollution of bursting, and usually can only adopt additional input power factor compensation tache or filter, increases the umber of pulse of rectifier.So not only add the expense buying uninterrupted power supply, effect is also undesirable simultaneously, virtually turn increases a fault point.And power factor can be brought up to close to 1 by novel full IGBT rectification easily, fundamentally solve the problem of electrical network being returned to interference of bursting.
But, for middle low power uninterrupted power supply, adopt IGBT commutation technique with high costs, control circuit complexity, 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, while this power supply retains power frequency uninterrupted power supply advantage, solve traditional middle low power uninterrupted power supply input power factor low, the problem that harmonic pollution is serious.
For reaching this object, 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 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; The civil power input anode of L and the first rectification thyristor SCR1, the negative electrode of the 4th rectification thyristor SCR4 are coupled; The civil power input anode of N and the second rectification thyristor SCR2, the negative electrode of the 3rd rectification thyristor SCR3 are coupled; The negative electrode of the first rectification thyristor SCR1, the negative electrode of the second rectification thyristor SCR2 are coupled; The anode of the 3rd rectification thyristor SCR3, the anode of the 4th rectification thyristor SCR4 are together with the negative couplings of storage battery.
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 input of inductance L and the negative electrode of the second rectification thyristor SCR2 are coupled, and the negative electrode of the output of inductance L, the anode of diode D, the first control switch diode D1 is together with the collector coupled of the first insulated gate bipolar transistor Q1; One end of the anode of the first control switch diode D1, the emitter of the first insulated gate bipolar transistor Q1, bus capacitor C1 is together with the negative couplings of storage battery, and the other end of bus capacitor C1 and the negative electrode of diode D are 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 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 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 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 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 are together with the negative couplings of storage battery.
Wherein, also comprise relay R ELAY1 and controlled cell switch controllable silicon SCR 5, the input of the described negative electrode of controlled cell switch controllable silicon SCR 5, the normal battle of relay R ELAY1 and inductance L is coupled; The positive pole of the anode of controlled cell switch controllable silicon SCR 5, the normally closed point of relay R ELAY1 and storage battery is coupled.
Beneficial effect of the present invention is: the power frequency on-Line UPS of the modified node method that the present invention proposes, this structure uninterrupted power supply increases one-level circuit of power factor correction on traditional power frequency uninterrupted power supply architecture basics, civil power boosts through overpower factor correcting circuit DC/DC after rectification, then exports via inverter inversion.Owing to have employed power factor correction technology, input power factor reaches more than 0.99, effectively reduces Harmonics of Input THDI value, eliminates the harmonic pollution of uninterrupted power supply feedback grid greatly, also improve the utilance to electrical network simultaneously, reduce the operating cost of uninterrupted power supply.Remain again the features such as power frequency uninterrupted power supply load capacity is strong, strong shock resistance simultaneously.
Accompanying drawing explanation
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 the power frequency on-Line UPS of power factor emendation function of the present invention;
Fig. 4 is a kind of circuit diagram with the power frequency on-Line UPS of power factor emendation function of the present invention;
Fig. 5 is a kind of circuit diagram with the rectification circuit of the power frequency on-Line UPS of power factor emendation function of the present invention;
Fig. 6 is a kind of circuit diagram with the circuit of power factor correction of the power frequency on-Line UPS of power factor emendation function of the present invention;
Fig. 7 is a kind of circuit diagram with the inverter circuit of the power frequency on-Line UPS of power factor emendation function of the present invention.
Embodiment
Technical scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
The present invention is a kind of has the first embodiment of the power frequency on-Line UPS of power factor emendation function 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 increases one-level circuit of power factor correction on traditional power frequency uninterrupted power supply architecture basics, and civil power boosts through overpower factor correcting circuit DC/DC after rectification, then exports via inverter inversion.Owing to have employed power factor correction technology, input power factor reaches more than 0.99, effectively reduces Harmonics of Input THDI value, eliminates the harmonic pollution of uninterrupted power supply feedback grid greatly, also improve the utilance to electrical network simultaneously, reduce the operating cost of uninterrupted power supply.Remain again the features such as power frequency uninterrupted power supply load capacity is strong, strong shock resistance simultaneously.
As one preferred embodiment, 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 described rectifier, circuit of power factor correction and inverter and completes control by dsp chip.
Described dsp chip is high-speed dsp control chip.
The control of described uninterrupted power supply rectifier, circuit of power factor correction, inverter all adopts high-speed dsp chip to complete control, and speed is fast, precision is high, and control circuit is simple, reliable, stable.
As another preferred embodiment, the present invention is a kind of has the circuit theory diagrams of the power frequency on-Line UPS of power factor emendation function as shown in Figures 4 to 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; The civil power input anode of L and the first rectification thyristor SCR1, the negative electrode of the 4th rectification thyristor SCR4 are coupled; The civil power input anode of N and the second rectification thyristor SCR2, the negative electrode of the 3rd rectification thyristor SCR3 are coupled; The negative electrode of the first rectification thyristor SCR1, the negative electrode of the second rectification thyristor SCR2 are coupled; The anode of the 3rd rectification thyristor SCR3, the anode of the 4th rectification thyristor SCR4 are together with the negative couplings of storage battery.
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 input of inductance L and the negative electrode of the second rectification thyristor SCR2 are coupled, and the negative electrode of the output of inductance L, the anode of diode D, the first control switch diode D1 is together with the collector coupled of the first insulated gate bipolar transistor Q1; One end of the anode of the first control switch diode D1, the emitter of the first insulated gate bipolar transistor Q1, bus capacitor C1 is together with the negative couplings of storage battery, and the other end of bus capacitor C1 and the negative electrode of diode D are 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 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 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 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 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 are together with the negative couplings of storage battery.
Described uninterrupted power supply also comprises relay R ELAY1 and controlled cell switch controllable silicon SCR 5, and the input of the described negative electrode of controlled cell switch controllable silicon SCR 5, the normal battle of relay R ELAY1 and inductance L is coupled; The positive pole of the anode of controlled cell switch controllable silicon SCR 5, the normally closed point of relay R ELAY1 and storage battery is coupled.
In the present embodiment, described uninterrupted power supply adds one-level power factor correction link on the basis of traditional uninterrupted power supply, the diode of each insulated gate bipolar transistor and numbering correspondence forms a control switch, therefore in circuit, have the first control switch K1, second control switch K2, 3rd control switch K3, 4th control switch K4 and the 5th control switch K5, first control switch K1 is the second control switch K2 wherein, 3rd control switch K3, 4th control switch K4 and the 5th control switch K5 belongs to inverter circuit, its overall work principle is described as follows by the prior art now in conjunction with uninterrupted power supply:
Normal mode of operation: civil power input convert through rectification circuit AC/DC, after enter circuit of power factor correction realize DC/DC boost; Then changed by inverter DC/AC, output to load by isolating transformer.In this process, charged 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 DC/DC by storage battery through circuit of power factor correction and boost.Then changed by inverter DC/AC, output to load by isolating transformer.When AC power is recovered normal, uninterrupted power supply transfers 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 when there being civil power, uninterrupted power supply proceeds to static by-pass pattern automatically; Civil power input outputs to load through static bypass switch STS.
Maintenance bypass pattern: when uninterrupted power supply needs to safeguard or keep in repair, manually switch S load can be switched to maintenance bypass, thus ensure user load not power-off.
The connected mode of the maintenance bypass of described uninterrupted power supply, static by-pass, output isolation transformer is identical with prior art or similar, therefore repeats no more.
Below know-why of the present invention is described in conjunction with specific embodiments.These describe just in order to explain principle of the present invention, and can not be interpreted as limiting the scope of the invention by any way.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, and these modes all will fall within protection scope of the present invention.
Claims (5)
1. one kind has the power frequency on-Line UPS of power factor emendation function, comprise rectifier, storage battery, charger and inverter, it is characterized in that, described power frequency on-Line UPS also comprises 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; Described rectifier comprises the first rectification thyristor SCR1, the second rectification thyristor SCR2, the 3rd rectification thyristor SCR3, the 4th rectification thyristor SCR4; The civil power input anode of L and the first rectification thyristor SCR1, the negative electrode of the 4th rectification thyristor SCR4 are coupled; The civil power input anode of N and the second rectification thyristor SCR2, the negative electrode of the 3rd rectification thyristor SCR3 are coupled; The negative electrode of the first rectification thyristor SCR1, the negative electrode of the second rectification thyristor SCR2 are coupled; The anode of the 3rd rectification thyristor SCR3, the anode of the 4th rectification thyristor SCR4 are together with the negative couplings of storage battery; 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 input of inductance L and the negative electrode of the second rectification thyristor SCR2 are coupled, and the negative electrode of the output of inductance L, the anode of diode D, the first control switch diode D1 is together with the collector coupled of the first insulated gate bipolar transistor Q1; One end of the anode of the first control switch diode D1, the emitter of the first insulated gate bipolar transistor Q1, bus capacitor C1 is together with the negative couplings of storage battery, and the other end of bus capacitor C1 and the negative electrode of diode D are coupled.
2. a kind of power frequency on-Line UPS with power factor emendation function according to claim 1, it is characterized in that, described power frequency on-Line UPS also comprises dsp chip, and 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, it is characterized in that, described dsp chip is 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 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 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 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 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 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 are together with the negative couplings of storage battery.
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 frequency on-Line UPS also comprises relay R ELAY1 and controlled cell switch controllable silicon SCR 5, and the input of the described negative electrode of controlled cell switch controllable silicon SCR 5, the normal battle of relay R ELAY1 and inductance L is coupled; The positive pole of the anode of controlled cell switch controllable silicon SCR 5, the normally closed point of relay R ELAY1 and storage battery is coupled.
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Families Citing this family (8)
| 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 |
| CN105846532A (en) * | 2015-01-13 | 2016-08-10 | 伊顿制造（格拉斯哥）有限合伙莫尔日分支机构 | Uninterrupted power source and control method therefor |
| CN106253456B (en) * | 2016-08-01 | 2018-07-31 | 合肥联信电源有限公司 | A kind of high-power emergency power supply static state is released control panel protection circuit |
| CN107785987B (en) * | 2016-08-25 | 2023-06-09 | 伊顿制造（格拉斯哥）有限合伙莫尔日分支机构 | Online uninterrupted power supply |
| 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 |
| CN113224831A (en) | 2020-02-06 | 2021-08-06 | 硕天科技股份有限公司 | Online uninterruptible power system and operation method thereof |
| CN113422519B (en) * | 2021-06-09 | 2023-06-16 | 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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