CN108847778A - A kind of inversion controlling method of online high frequency UPS - Google Patents
A kind of inversion controlling method of online high frequency UPS Download PDFInfo
- Publication number
- CN108847778A CN108847778A CN201810814687.0A CN201810814687A CN108847778A CN 108847778 A CN108847778 A CN 108847778A CN 201810814687 A CN201810814687 A CN 201810814687A CN 108847778 A CN108847778 A CN 108847778A
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- Prior art keywords
- high frequency
- inverter
- online high
- frequency ups
- over switch
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/38—Means for preventing simultaneous conduction of switches
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/38—Means for preventing simultaneous conduction of switches
- H02M1/385—Means for preventing simultaneous conduction of switches with means for correcting output voltage deviations introduced by the dead time
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses the inversion controlling methods of online high frequency UPS a kind of, inverse control system including online high frequency UPS, the inverse control system of the online high frequency UPS includes input filter, the input filter connecting pin is connected with GHARGER charger, GHARGER charger connecting pin is connected with battery group, battery group connecting pin is connected with AC/DC converter, AC/DC converter connecting pin is connected with inverter, the input filter is connected with AC/DC power factor corrector by change-over switch S1, and the inverter is connected with output filter by change-over switch S2.The present invention conveys voltage by using bridge inverter main circuit, it is aided with function generator simultaneously and amplitude modulation, frequency modulation, phase modulation and pulsewidth modulation is carried out to the voltage of input, solves the problems, such as existing double PI control or outer ring PI inner ring P control using inverter voltage outer ring inductive current inner ring and past do not accomplish excellent control effect.
Description
Technical field
The present invention relates to reverse control technology field, in particular to a kind of inversion controlling method of online high frequency UPS.
Background technique
With the development of science and technology with the progress in epoch, social each department proposes more the reliability and power supply quality of power supply
Carry out higher requirement.UPS uninterruptible power supply is answered extensively as a kind of power equipment for improving power supply reliability and power supply quality
Used in the higher occasion of power reguirements, and its Converting Unit is the key component for determining UPS output waveform and output stability.It is existing
The inversion controlling method for the online high frequency UPS having generallys use double PI control or outer of inverter voltage outer ring inductive current inner ring
Ring PI inner ring P control mode, does not often accomplish excellent control effect.
Therefore, the inversion controlling method for inventing a kind of online high frequency UPS is necessary to solve the above problems.
Summary of the invention
The purpose of the present invention is to provide the inversion controlling methods of online high frequency UPS a kind of, by using bridge type inverse
Circuit conveys voltage, while being aided with function generator and carrying out amplitude modulation, frequency modulation, phase modulation and pulsewidth tune to the voltage of input
System, it is mentioned above in the background art existing using double PI control of inverter voltage outer ring inductive current inner ring or outer ring to solve
PI inner ring P is controlled and past the problem of not accomplishing excellent control effect.
To achieve the above object, the present invention provides the following technical solutions：A kind of inversion control side of online high frequency UPS
Method, the inverse control system including online high frequency UPS, the inverse control system of the online high frequency UPS include input
Filter, the input filter connecting pin are connected with GHARGER charger, and GHARGER charger connecting pin is connected with
Battery group, battery group connecting pin are connected with AC/DC converter, and AC/DC converter connecting pin is connected with inversion
Device, the input filter are connected with AC/DC power factor corrector and the inverter by turning by change-over switch S1
It changes switch S2 and is connected with output filter, bypass is provided between the input filter and output filter；
The control method of the inverse control system of the online high frequency UPS specifically comprises the following steps：
Step 1：According to above-mentioned online high frequency UPS inverse control system the mode of connection by each section control element
It is connected to by conducting wire；
Step 2：By the input of 50Hz alternating current by input filter, and judge whether power grid power supply is normal, if power grid is powered
Normally, then change-over switch S1, S2 is closed at, so that electric power is charged by GHARGER charger to battery group, together
When, voltage is conveyed to inverter after passing through AC/DC power factor corrector, and load is then supplied by output filter and is used,
If power grid abnormal electrical power supply, change-over switch S1 is disconnected, and change-over switch S2 is closed, and provides electrical power to inverter by battery group,
Then load is supplied by output filter to use；
Step 3：Judge whether inverter breaks down, if inverter is without failure, electric power is according in step 2
Mode of movement is conveyed, if inverter breaks down, change-over switch S1, S2 are opened simultaneously, and loads required electric power by side
Road supply；
Step 4：Electric power supplies load by output filter and uses.
Preferably, the AC/DC converter constitutes bridge by 4 IRF using single-phase output, the form of full-bridge inverting
Formula inverter circuit, and stable control voltage is provided by triode.
Preferably, that the main control circuit chip of the inverse control system of the online high frequency UPS is selected is SG3524
Type main control circuit chip, can be used to generate pwm signal, provide output waveform to driving circuit, so that full-bridge circuit be made to replace
Conducting makes electric power realize exchange output after inverter is handled, completes the realization of entire circuit inversion.
Preferably, it is equipped with ICL8083 type function generator on the SG3524 type main control circuit chip, can be used to produce
Raw square wave, triangular wave, sine wave, simultaneously, additionally it is possible to which amplitude modulation, frequency modulation, phase modulation and pulsewidth modulation are carried out to the voltage of input.
Preferably, the D < 50% of the output driving waveform of the SG3524 type main control circuit chip, it can be ensured that inversion
Driving square wave has common dead time, avoids the occurrence of the case where upper and lower bridge arm simultaneously turns on.
Technical effect and advantage of the invention：
1, voltage is conveyed by using bridge inverter main circuit, while is aided with function generator to the voltage of input
Amplitude modulation, frequency modulation, phase modulation and pulsewidth modulation are carried out, the precision of voltage regulation of the inverse control system of online high frequency UPS is greatly improved；
2, by controlling the D of the output driving waveform of SG3524 type main control circuit chip below 50%, it can be ensured that
The driving square wave of inversion has common dead time, avoids the occurrence of the case where upper and lower bridge arm simultaneously turns on.
Detailed description of the invention
Fig. 1 is system construction drawing of the invention；
Fig. 2 is control method flow chart of the invention；
Fig. 3 is sine wave signal occurring principle figure of the invention；
Fig. 4 is the control circuit block diagram of function generator of the invention；
In figure：1 input filter, 2GHARGER charger, 3 battery groups, 4AC/DC converter, 5AC/DC power factor
Corrector, 6 inverters, 7 output filters, 8 bypasses.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1：
The present invention provides the inversion controlling methods of online high frequency UPS as shown in Figs 1-4 a kind of, including online height
The inverse control system of frequency UPS, the inverse control system of the online high frequency UPS include input filter 1, the input
1 connecting pin of filter is connected with GHARGER charger 2, and 2 connecting pin of GHARGER charger is connected with battery group 3, institute
It states 3 connecting pin of battery group and is connected with AC/DC converter 4,4 connecting pin of AC/DC converter is connected with inverter 6, described
Input filter 1 is connected with AC/DC power factor corrector 5 and the inverter 6 by change-over switch S1 and is opened by conversion
It closes S2 and is connected with output filter 7, be provided with bypass 8 between the input filter 1 and output filter 7.
Further, in the above-mentioned technical solutions, the AC/DC converter 4 is using single-phase output, full-bridge inverting
Form constitutes bridge inverter main circuit by 4 IRF, and provides stable control voltage by triode.
Further, in the above-mentioned technical solutions, the main control circuit of the inverse control system of the online high frequency UPS
What chip was selected is SG3524 type main control circuit chip, can be used to generate pwm signal, provides output waveform to driving circuit,
To make full-bridge circuit alternate conduction, so that electric power is realized exchange output after the processing of inverter 6, complete entire circuit inversion
It realizes.
Further, in the above-mentioned technical solutions, ICL8083 type is equipped on the SG3524 type main control circuit chip
Function generator can be used to generate square wave, triangular wave, sine wave, simultaneously, additionally it is possible to the voltage of input carry out amplitude modulation, frequency modulation,
Phase modulation and pulsewidth modulation.
Further, in the above-mentioned technical solutions, the D of the output driving waveform of the SG3524 type main control circuit chip
< 50%, it can be ensured that the driving square wave of inversion has common dead time, avoids the occurrence of the case where upper and lower bridge arm simultaneously turns on.
Embodiment 2：
The present invention also provides a kind of control method of the inverse control system of online high frequency UPS, specifically include as
Lower step：
Step 1：According to above-mentioned online high frequency UPS inverse control system the mode of connection by each section control element
It is connected to by conducting wire；
Step 2：By the input of 50Hz alternating current by input filter 1, and judge whether power grid power supply is normal, if power grid supplies
Electric normal, then change-over switch S1, S2 is closed at, so that electric power is charged by GHARGER charger 2 to battery group 3,
Meanwhile voltage then passes through the supply load of output filter 7 by being conveyed to inverter 6 after AC/DC power factor corrector 5
It uses, if power grid abnormal electrical power supply, change-over switch S1 is disconnected, and change-over switch S2 is closed, and is provided electrical power to by battery group 3 inverse
Become device 6, is then used by the supply load of output filter 7；
Step 3：Judge whether inverter 6 breaks down, if inverter 6 is without failure, electric power is according in step 2
Mode of movement conveyed, if inverter 6 breaks down, change-over switch S1, S2 opened simultaneously, load required electric power by
8 supply of bypass；
Step 4：Electric power is used by the supply load of output filter 7.
Working principle of the present invention：
Each section control element is pressed according to Figure of description 1 first in use referring to Figure of description 1-2
It is connected to according to the mode of connection of the inverse control system of above-mentioned online high frequency UPS by conducting wire, then, 50Hz alternating current is inputted logical
Input filter 1 is crossed, and judges whether power grid power supply is normal, if power grid power supply is normal, change-over switch S1, S2 are closed at,
So that electric power is charged by GHARGER charger 2 to battery group 3, meanwhile, voltage passes through AC/DC PFC
It is conveyed to inverter 6 after device 5, is then used by the supply load of output filter 7, if power grid abnormal electrical power supply, change-over switch
S1 is disconnected, and change-over switch S2 is closed, and provides electrical power to inverter 6 by battery group 3, is then supplied by output filter 7
Load uses, in the process, it is also necessary to diagnose to the working condition of inverter 6, to judge whether inverter 6 event occurs
Barrier, if inverter 6 is without failure, electric power is conveyed according to the mode of movement in step 2, if event occurs in inverter 6
Barrier, then change-over switch S1, S2 is opened simultaneously, and loads required electric power by 8 supply of bypass, so that electric power be made to pass through output filter
7 supply loads use；
Referring to Figure of description 3-4, when carrying out sinusoidal pulse width modulation, after sine wave signal generates, all the way by precision
Full-wave rectification, obtains steamed bun wave us, and another way obtains being passed through with sine wave same frequency, the side of same-phase by u2, u1 by comparator
Obtain u3 after full-wave rectifying circuit, u3 using obtaining u4 after adder, and and sawtooth wave production is compared inside SG3524
Raw SPWM wave u5, u2 and u5 can be obtained by driving signal u6 and u7 after being added to phase splitter, then u6 and u7 are added to metal-oxide-semiconductor and driven
The primary side of dynamic circuit, so that it may realize sinusoidal pulse width modulation.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (5)
1. a kind of inversion controlling method of online high frequency UPS, the inverse control system including online high frequency UPS, feature
It is：The inverse control system of the online high frequency UPS includes input filter (1), input filter (1) connection
End is connected with GHARGER charger (2), and GHARGER charger (2) connecting pin is connected with battery group (3), the electric power storage
Pond group (3) connecting pin is connected with AC/DC converter (4), and AC/DC converter (4) connecting pin is connected with inverter (6), institute
Stating input filter (1), by change-over switch S1 to be connected with AC/DC power factor corrector (5) and the inverter (6) logical
It crosses change-over switch S2 to be connected with output filter (7), is provided with side between the input filter (1) and output filter (7)
Road (8)；
The control method of the inverse control system of the online high frequency UPS specifically comprises the following steps：
Step 1：Each section control element is passed through according to the mode of connection of the inverse control system of above-mentioned online high frequency UPS
Conducting wire connection；
Step 2：By the input of 50Hz alternating current by input filter (1), and judge whether power grid power supply is normal, if power grid is powered
Normally, then change-over switch S1, S2 is closed at, so that electric power is filled by GHARGER charger (2) to battery group (3)
Electricity, meanwhile, voltage is conveyed to inverter (6) after passing through AC/DC power factor corrector (5), then passes through output filter (7)
Supply load uses, if power grid abnormal electrical power supply, change-over switch S1 is disconnected, and change-over switch S2 is closed, and is mentioned by battery group (3)
For electric power to inverter (6), then used by output filter (7) supply load；
Step 3：Judge whether inverter (6) breaks down, if inverter (6) is without failure, electric power is according in step 2
Mode of movement conveyed, if inverter (6) breaks down, change-over switch S1, S2 opened simultaneously, and loads required electric power
By bypassing (8) supply；
Step 4：Electric power is used by output filter (7) supply load.
2. the inversion controlling method of online high frequency UPS according to claim 1 a kind of, it is characterised in that：The AC/DC
Converter (4) is made of bridge inverter main circuit 4 IRF using single-phase output, the form of full-bridge inverting, and passes through three poles
Pipe provides stable control voltage.
3. the inversion controlling method of online high frequency UPS according to claim 1 a kind of, it is characterised in that：It is described online
What the main control circuit chip of the inverse control system of formula high frequency UPS was selected is SG3524 type main control circuit chip, be can be used to
Pwm signal is generated, provides output waveform to driving circuit, to make full-bridge circuit alternate conduction, makes electric power by inverter (6)
Exchange output is realized after processing, completes the realization of entire circuit inversion.
4. the inversion controlling method of online high frequency UPS according to claim 3 a kind of, it is characterised in that：It is described
It is equipped with ICL8083 type function generator on SG3524 type main control circuit chip, can be used to generate square wave, triangular wave, sine
Wave, simultaneously, additionally it is possible to which amplitude modulation, frequency modulation, phase modulation and pulsewidth modulation are carried out to the voltage of input.
5. the inversion controlling method of online high frequency UPS according to claim 4 a kind of, it is characterised in that：It is described
The D < 50% of the output driving waveform of SG3524 type main control circuit chip, it can be ensured that the driving square wave of inversion has common dead
Area's time, avoid the occurrence of the case where upper and lower bridge arm simultaneously turns on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810814687.0A CN108847778A (en) | 2018-07-23 | 2018-07-23 | A kind of inversion controlling method of online high frequency UPS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810814687.0A CN108847778A (en) | 2018-07-23 | 2018-07-23 | A kind of inversion controlling method of online high frequency UPS |
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| Publication Number | Publication Date |
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| CN108847778A true CN108847778A (en) | 2018-11-20 |
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| CN201810814687.0A Pending CN108847778A (en) | 2018-07-23 | 2018-07-23 | A kind of inversion controlling method of online high frequency UPS |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2206004Y (en) * | 1994-03-26 | 1995-08-23 | 王志杰 | High-performance in-line interruption electric source |
| CN102412732A (en) * | 2010-04-03 | 2012-04-11 | 联正电子(深圳)有限公司 | Uninterrupted power supply device and control method thereof |
| CN203278317U (en) * | 2013-05-09 | 2013-11-06 | 大连国通电气有限公司 | A wind electricity UPS apparatus using capacitor current inner loop control |
| CN104065157A (en) * | 2014-06-09 | 2014-09-24 | 深圳微网能源管理系统实验室有限公司 | Uninterruptible power supply with improved power supply reliability |
| CN205583829U (en) * | 2016-02-18 | 2016-09-14 | 扬州鑫鸿电子有限公司 | On line type UPS system based on DSP |
| CN106253462A (en) * | 2016-08-30 | 2016-12-21 | 成都英格瑞德电气有限公司 | There is the improvement ups system of filter function |
-
2018
- 2018-07-23 CN CN201810814687.0A patent/CN108847778A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2206004Y (en) * | 1994-03-26 | 1995-08-23 | 王志杰 | High-performance in-line interruption electric source |
| CN102412732A (en) * | 2010-04-03 | 2012-04-11 | 联正电子(深圳)有限公司 | Uninterrupted power supply device and control method thereof |
| CN203278317U (en) * | 2013-05-09 | 2013-11-06 | 大连国通电气有限公司 | A wind electricity UPS apparatus using capacitor current inner loop control |
| CN104065157A (en) * | 2014-06-09 | 2014-09-24 | 深圳微网能源管理系统实验室有限公司 | Uninterruptible power supply with improved power supply reliability |
| CN205583829U (en) * | 2016-02-18 | 2016-09-14 | 扬州鑫鸿电子有限公司 | On line type UPS system based on DSP |
| CN106253462A (en) * | 2016-08-30 | 2016-12-21 | 成都英格瑞德电气有限公司 | There is the improvement ups system of filter function |
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Application publication date: 20181120 |