CN102487215B - Utilize the parallel running supply unit of blocks current control circuit - Google Patents
Utilize the parallel running supply unit of blocks current control circuit Download PDFInfo
- Publication number
- CN102487215B CN102487215B CN201110150021.8A CN201110150021A CN102487215B CN 102487215 B CN102487215 B CN 102487215B CN 201110150021 A CN201110150021 A CN 201110150021A CN 102487215 B CN102487215 B CN 102487215B
- Authority
- CN
- China
- Prior art keywords
- power supply
- current control
- blocks current
- module
- voltage
- Prior art date
- 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.)
- Expired - Fee Related
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Classifications
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
Abstract
The present invention relates to the parallel running supply unit utilizing blocks current control circuit, more specifically, relate to module Large Copacity being divided into low capacity, the switch mode power supply apparatus of jumbo power supply can be supplied by being run by the modular concurrent of described low capacity.
Description
Technical field
The present invention relates to switch mode power supply apparatus, more specifically, relate to and Large Copacity is divided into low capacity module, the jumbo parallel running supply unit utilizing blocks current control circuit can be embodied by being run by the modular concurrent of described low capacity.
Background technology
Switch mode power supply apparatus (the SwitchedModePowerSupply be widely used as DC stabilization power supply, SMPS) utilize the switch process device of semiconductor element and control flow of power, therefore, compared with stabilized power supply in the past, be a kind of stabilized power supply with high efficiency, small-sized and light-weighted advantage.
But, along with supply unit becomes maximization, being restricted when improving the switching frequency of large electrical power switching element, being therefore difficult to realize miniaturized and lightweight.
In order to solve the problem a little, import and Large Copacity has been divided into low capacity module, having embodied the mode of jumbo supply unit by being run by the modular concurrent of low capacity.
But, in the existing supply unit run by the modular concurrent of low capacity, if a module breaks down, then can not control electric current, thus the module of remaining normal condition also cannot drive.
Summary of the invention
The present invention researches and develops to solve the problem a little, the object of the present invention is to provide a kind of such switch mode power supply apparatus: embodying in the supply unit of large capacity power device by the running of the modular concurrent of low capacity, even if at least one module in described low capacity module breaks down, also can be continued to load supply power by the residue module except the module broken down.
In order to achieve the above object, supply unit according to the present invention is parallel-connected on master controller by multiple power supply supplying module, each power supply supplying module parallel running and to the supply unit of load supply power, this power supply supplying module comprises blocks current control part, and the blocks current output valve of the output of this power supply supplying module and the secondary voltage that produces from described master controller Vcont input voltage are applied to PWM controller by this blocks current control part.
Described blocks current control part comprises blocks current control circuit, this blocks current control circuit comprises: input, this input possesses (+) input terminal and (-) input terminal, from the detection current splitter of the output of described power supply supplying module by channel amplifier to this (+) input terminal input module current output value, the Vcont voltage transmitted by control line from described master controller inputs to this (-) input terminal; And output, the secondary voltage that its output is inputted by described input is also applied to described PWM controller.
Further, described blocks current control part regulates the OFFSET of described channel amplifier (being biased) and I/MAX (maximum current) amount, makes the current deviation of each power supply supplying module be zero.
As mentioned above, according to supply unit of the present invention, even if at least one module in described low capacity module breaks down, also can be continued to load supply power by the residue module except the module broken down.
Further, the control object due to blocks current control circuit is electric current, therefore composition module Current Control, thus improves the overload characteristic of transducer.
Accompanying drawing explanation
Fig. 1 is the block diagram of the supply unit diagrammatically shown according to a preferred embodiment of the invention.
Fig. 1 is the block diagram of the switch mode power supply apparatus diagrammatically shown according to a preferred embodiment of the invention, and Fig. 2 is the circuit diagram of the master controller of Fig. 1.
Fig. 3 is the circuit diagram of blocks current control circuit according to a preferred embodiment of the invention.
Symbol description
10 power supply supplying modules; 110 input rectifying portions; 120 output translators; 121PWM controller; 122 rectifiers; 123 blocks current control parts
Embodiment
Below, specific embodiments of the invention are described in detail with reference to accompanying drawing.
Fig. 1 is the block diagram of the switch mode power supply apparatus diagrammatically shown according to a preferred embodiment of the invention.
With reference to Fig. 1, supply unit according to the present invention comprises the master controller 20 being connected in parallel by the power supply supplying module 10 of the module composition being divided into multiple low capacity and described each power supply supplying module and control line and being controlled described each power supply supplying module.
At this, in described power supply supplying module 10, described master controller 20 is connected in parallel with control line, therefore in theory, a master controller can connect numerous (N+1).
Such as, when the capacity of supply unit is 100kW, is connected in parallel the power supply supplying module of 5 20kW and runs, thus the capacity process of 100kW can be carried out.
Described power supply supplying module 10 comprises: input rectifying portion 110, and it carries out rectification to input voltage; Output translator 120, the voltage transitions after described rectification is the voltage being supplied to load by it, and the stable electric current supply in control module.
It is the effect of DC voltage that described input rectifying portion 110 plays input AC voltage commutation, and described output translator 120 plays the effect DC voltage of rectification being converted to the voltage being supplied to load.
Described output translator 120 comprises: PWM controller (inverter) 121, and it is control impuls width in order to the stabilisation of output voltage; Blocks current control part 123, the stable Current Control in its control module; Rectifier 122, it carries out rectification to the voltage of described stabilisation.
Described output translator 120 is by by described PWM controller 121, stabilized voltage outputs to load through described rectifier 122.
At this, described blocks current control part 123 applies to be adjusted to make the current deviation of each power supply supplying module be the voltage of zero to described PWM controller 121, and described PWM controller 121 forms drive pulse waveform and finally adjusts output voltage and electric current.
Described master controller 20 comprises microcontroller for controlling supply unit total system and voltage control circuit and current control circuit.
Fig. 2 is the circuit diagram of the master controller diagrammatically shown according to a preferred embodiment of the invention.
Voltage, electric current runtime value, while the various alarm of process, are supplied to control circuit by described microcontroller.
Described voltage control circuit compares the output voltage detected and voltage runtime value and produces error voltage, described current control circuit adds up to amplifier by electric current, current value from each power supply supplying module is all added up to, the current value added up to becomes whole electric currents of system, and compares with Current Control value and produce error voltage.
The signal produced by described voltage control circuit and current control circuit by forming Vcont while diode D1, D2, and as each module control signal and send.
At this, described Vcont is subject to the restriction of the voltage level limiter of VcLimiter, and this confined value determines the maximum current of each module.
Fig. 3 is the circuit diagram of blocks current control part according to a preferred embodiment of the invention.
With reference to Fig. 3, module output current value through channel amplifier in the current detecting splitter of output is applied to (+) input terminal of the input of blocks current control circuit by described blocks current control part 123, meanwhile module output current value is sent in master controller by control line through resistance (R-CURR).
Further, the Vcont voltage carrying out autonomous controller 20 is applied to (-) input terminal of the input of blocks current control part and becomes the output of circuit by buffer.
At this, the secondary voltage exported by the output of described blocks current control circuit is imported into PWM controller 121 and forms the drive pulse waveform of output translator, final adjustment output voltage and electric current.
Each voltage supplying module 10 according to the present invention receives all identical Vcont from master controller, and the electric current flow through in each power supply supplying module 10 and described Vcont voltage matches, as long as accurately regulate OFFSET and the I/MAX amount of channel amplifier, then the current deviation of each power supply supplying module 10 is zero.Therefore, it is possible to stably control electric current, even if the part in power supply supplying module breaks down, also can be come to load supply power by remaining power supply supplying module.
Further, the control object due to blocks current control circuit is electric current, therefore composition module Current Control, thus improves the overload characteristic of transducer.
Above, be illustrated according to a preferred embodiment of the invention, but protection scope of the present invention is not limited to above-described embodiment, those skilled in the art can carry out various correction and change in the scope not departing from thought of the present invention and technical field.
Claims (1)
1. a supply unit, the multiple power supply supplying modules being divided into low capacity are parallel-connected on master controller by it, each power supply supplying module parallel running and to load supply power,
The feature of this supply unit is,
Described power supply supplying module comprises blocks current control part, and the blocks current output valve of the output according to described power supply supplying module and the secondary voltage that produces from described master controller input Vcont voltage are applied to PWM controller by this blocks current control part,
Described blocks current control part comprises blocks current control circuit,
This blocks current control circuit comprises:
Input, it possesses positive input terminal and negative input terminal, wherein, the current detecting splitter of the output of described power supply supplying module is by channel amplifier to this positive input terminal input module current output value, and the Vcont voltage that described master controller is transmitted by control line inputs to this negative input terminal; And output, it exports the secondary voltage that inputs according to described input and is applied to described PWM controller,
Described blocks current control part regulates the biased of described channel amplifier and maximum current flow, makes the current deviation of each power supply supplying module be zero.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100121335A KR101047338B1 (en) | 2010-12-01 | 2010-12-01 | Power device |
| KR10-2010-0121335 | 2010-12-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102487215A CN102487215A (en) | 2012-06-06 |
| CN102487215B true CN102487215B (en) | 2016-02-17 |
Family
ID=44923270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110150021.8A Expired - Fee Related CN102487215B (en) | 2010-12-01 | 2011-05-13 | Utilize the parallel running supply unit of blocks current control circuit |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101047338B1 (en) |
| CN (1) | CN102487215B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317210B (en) * | 2013-07-11 | 2015-08-05 | 济宁奥太电气有限公司 | Contravariant submerged arc welding electric power twin inverter sharing control system |
| CN105992432B (en) * | 2015-02-05 | 2018-09-04 | 台达电子工业股份有限公司 | Power circuit applied to LED load |
| CN106100328A (en) * | 2016-07-18 | 2016-11-09 | 杭州重芯力科技有限公司 | Numerical control regulated power supply and pressure regulation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5164890A (en) * | 1990-03-29 | 1992-11-17 | Hughes Aircraft Company | Current share scheme for parallel operation of power conditioners |
| US6009000A (en) * | 1999-02-05 | 1999-12-28 | The Aerospace Corporation | Shared-bus current sharing parallel connected current-mode DC to DC converters |
| CN201118463Y (en) * | 2007-11-15 | 2008-09-17 | 华南理工大学 | A high-power high-frequency soft switch IGBT reverse agglomeration power supply |
| CN101271345A (en) * | 2007-11-06 | 2008-09-24 | 徐州燃烧控制研究院有限公司 | Plasma ignition high power switch power source |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0775344A (en) * | 1993-08-31 | 1995-03-17 | Nippon Electric Ind Co Ltd | Current loop control type pwm inverter |
| US7030512B2 (en) | 2004-06-25 | 2006-04-18 | The Board Of Trustees Of The University Of Illinois | Dynamic current sharing dc-dc switching power supply |
-
2010
- 2010-12-01 KR KR1020100121335A patent/KR101047338B1/en active IP Right Grant
-
2011
- 2011-05-13 CN CN201110150021.8A patent/CN102487215B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5164890A (en) * | 1990-03-29 | 1992-11-17 | Hughes Aircraft Company | Current share scheme for parallel operation of power conditioners |
| US6009000A (en) * | 1999-02-05 | 1999-12-28 | The Aerospace Corporation | Shared-bus current sharing parallel connected current-mode DC to DC converters |
| CN101271345A (en) * | 2007-11-06 | 2008-09-24 | 徐州燃烧控制研究院有限公司 | Plasma ignition high power switch power source |
| CN201118463Y (en) * | 2007-11-15 | 2008-09-17 | 华南理工大学 | A high-power high-frequency soft switch IGBT reverse agglomeration power supply |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101047338B1 (en) | 2011-07-07 |
| CN102487215A (en) | 2012-06-06 |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20160217 Termination date: 20170513 |