CN110380631A - High power density DC power supply - Google Patents
High power density DC power supply Download PDFInfo
- Publication number
- CN110380631A CN110380631A CN201910399048.7A CN201910399048A CN110380631A CN 110380631 A CN110380631 A CN 110380631A CN 201910399048 A CN201910399048 A CN 201910399048A CN 110380631 A CN110380631 A CN 110380631A
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- China
- Prior art keywords
- circuit
- voltage
- power supply
- output voltage
- power
- Prior art date
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- 238000012546 transfer Methods 0.000 claims abstract description 27
- 230000003993 interaction Effects 0.000 claims abstract description 13
- 230000005611 electricity Effects 0.000 claims description 12
- 238000002955 isolation Methods 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims 1
- 230000007812 deficiency Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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
- H02M3/3353—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 having at least two simultaneously operating switches on the input side, e.g. "double forward" or "double (switched) flyback" converter
-
- 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
- H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
- H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
- H02M7/12—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of AC power input into DC 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
- H02M7/217—Conversion of AC power input into DC 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
- H02M7/219—Conversion of AC power input into DC 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 in a bridge configuration
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
Present invention invention is related to a kind of high power density DC power supply, solves the deficiencies in the prior art, technical solution are as follows: include: rectification circuit, the alternating current for inputting power grid is converted to direct current；DC transfer circuit carries out Partial Power adjusting to the direct current of input, for adjusting electric power output voltage or electric current；Control circuit constructs control signal for acquiring the amplitude of input, output voltage or electric current, and according to the voltage setting value that human-computer interaction module provides so as to adjust DC transfer circuit；Human-computer interaction module, voltage needed for being set for user, and show the output state of power supply.
Description
Technical field
The invention belongs to power electronics fields, and in particular to a kind of high power density DC power supply.
Background technique
With the rapid development of science and technology, all kinds of electrical equipments are growing day by day.With the AC energy system of large-scale use
System is compared, and direct current energy system has the advantages such as control is simple, access is convenient, power converter level is few, is widely used in leading to
The fields such as letter system, data center, mobile base station and electric car charging.Adjustable power of direct current is exactly from widely distributed friendship
Galvanic electricity net obtains energy, provides the equipment of direct current energy.
Fig. 1 is the schematic diagram of existing DC power supply.Common DC power supply is usually by two stage power electronic converter structure
At.Prime is rectifier, and input termination alternating current, output end is the direct current that rectification obtains；Rear class is DC-DC converter, is used for
Output voltage or current controlled direct current.Existing DC power supply belongs to total power converter, whole electricity needed for electricity consumption end
It can be converted and be handled by the DC-DC converter.There are a disadvantages, i.e. power device in power supply for this converter
It will be designed according to maximum power capabilities with energy storage device.If the power of electrical equipment is larger, the volume of power supply is larger, cost
It is very high.
Summary of the invention
For in above-mentioned power supply present in the prior art power device and energy storage device will hold according to maximum power
Amount design.If the power of electrical equipment is larger, the volume of power supply is larger, and the very high problem of cost, the present invention provides one kind
The DC power supply side of high power density.
The technical solution adopted by the present invention to solve the technical problems is: a kind of high power density DC power supply, comprising:
Rectification circuit, the alternating current for inputting power grid are converted to direct current；
DC transfer circuit carries out Partial Power adjusting to the direct current of input, for adjusting electric power output voltage or electricity
Stream；
Control circuit, for acquiring the amplitude of input, output voltage or electric current, and the electricity provided according to human-computer interaction module
Pressure setting value constructs control signal so as to adjust DC transfer circuit；
Human-computer interaction module, voltage needed for being set for user, and show the output state of power supply.
The output voltage v of the DC transfer circuitdcoAfter polarity selecting circuit, with its input voltage vdcinSeries connection, shape
At total output v of the power supplyo, i.e. vo=vdco+vdcin.Therefore, the power to be treated of the DC transfer circuit is only Pdc=
vdco* i, only power supply gross output Po=(vdco+vdcin) * i a part.The DC transfer circuit is converted by two-stage DC/DC
Device is constituted.Prime DC/DC converter is realized using isolated topology, for realizing high-frequency isolation；Rear class DC-DC converter is by full-bridge
Or half-bridge topology is realized, output voltage is bipolarity, is adjusted.As the DC voltage v that rectification circuit obtainsdcinIt is defeated less than required
Voltage v outoWhen, circuit output voltage vdcoFor positive value；As the DC voltage v that rectification circuit obtainsdcinGreater than required output electricity
Press voWhen, circuit output voltage vdcoFor negative value.Higher power density may be implemented in DC power supply proposed by the present invention.Phase
Compared with traditional DC power supply, equipment cost can be greatly reduced under the premise of meeting power demand, reduce equipment volume.
DC power supply proposed by the present invention miniaturization, portability while, do not change the electrical connection of original electrical equipment, using with
Later maintenance is convenient.Control circuit of the invention acquires the voltage of output end, current information, it is convenient to integrated power meter function
Energy.
Preferably, the DC transfer circuit includes:
Two-way DC/DC high-frequency isolation circuit, is realized using isolated topology, for realizing high-frequency isolation；
Two-way DC/DC polarity regulating circuit is realized that output voltage is bipolarity and is adjusted by full-bridge or half-bridge topology；
As the DC voltage v that rectification circuit obtainsdcinLess than required output voltage voWhen, DC transfer circuit output voltage
vdcoFor positive value；As the DC voltage v that rectification circuit obtainsdcinGreater than required output voltage voWhen, DC transfer circuit output electricity
Press vdcoFor negative value.
Preferably, the output voltage v of DC transfer circuitdco, the output end of DC transfer circuit is selected electric by polarity
Lu Hou, the voltage v with rectification circuit outputdcinSeries connection forms total output voltage v of high power density DC power supplyo。
Preferably, the control circuit is constructed by sample circuit, main control chip and driver, the feedback of main control chip
The connection of the output end of input terminal and sample circuit, the control communication ends of main control chip are connect with human-computer interaction module, main control chip
Output end connect with the conducting control terminal of two-way DC/DC high-frequency isolation circuit by driver, the output end of main control chip is also
It is connect by driver with the conducting control terminal of two-way DC/DC polarity regulating circuit.
Substantial effect of the invention is: (1) proposed by the present invention DC power supply may be implemented higher power density.Phase
Compared with traditional DC power supply, equipment cost can be greatly reduced under the premise of meeting power demand, reduce equipment volume.
(2) DC power supply proposed by the present invention does not change the electrical of original electrical equipment while miniaturization, portability
Connection, using convenient with later maintenance.
(3) control circuit of the invention acquires the voltage of output end, current information, it is convenient to integrated power meter function
Energy.
Detailed description of the invention
Fig. 1 is traditional total power DC power supply schematic diagram；
Fig. 2 is the circuit diagram of the present embodiment；
Fig. 3 is the schematic block circuit diagram of the present embodiment；
Fig. 4 is the partial circuit schematic diagram of the present embodiment.
In figure: 1, human-computer interaction module, 2, main control chip, 3, driver, 4, sample circuit, 5, rectification circuit, 6, two-way
DC/DC high-frequency isolation circuit, 7, two-way DC/DC polarity regulating circuit.
Specific embodiment
Below by specific embodiment, and in conjunction with attached drawing, technical scheme of the present invention will be further explained in detail.
Embodiment 1:
A kind of high power density DC power supply (referring to attached drawing 2 to 4), comprising:
Rectification circuit 5, the alternating current for inputting power grid are converted to direct current；
DC transfer circuit carries out Partial Power adjusting to the direct current of input, for adjusting electric power output voltage or electricity
Stream；
Control circuit, for acquiring the amplitude of input, output voltage or electric current, and the electricity provided according to human-computer interaction module
Pressure setting value constructs control signal so as to adjust DC transfer circuit；
Human-computer interaction module 1, voltage needed for being set for user, and show the output state of power supply.
The DC transfer circuit includes:
Two-way DC/DC high-frequency isolation circuit 6, is realized using isolated topology, for realizing high-frequency isolation；
Two-way DC/DC polarity regulating circuit 7 is realized that output voltage is bipolarity and is adjusted by full-bridge or half-bridge topology；
It is realized in the form of lc circuit cooperates full-controlled rectifier bridge in the present embodiment, the input terminal of full-controlled rectifier bridge and two-way DC/DC high
The output end of frequency isolation circuit connects, and the output end of full-controlled rectifier bridge connects lc circuit, and lc circuit is also connected with the rectifying circuit.
As the DC voltage v that rectification circuit obtainsdcinLess than required output voltage voWhen, DC transfer circuit output voltage
vdcoFor positive value；As the DC voltage v that rectification circuit obtainsdcinGreater than required output voltage voWhen, DC transfer circuit output electricity
Press vdcoFor negative value.
The output voltage v of DC transfer circuitdco, the output end of DC transfer circuit is and whole by after polarity selecting circuit
The voltage v of current circuit outputdcinSeries connection forms total output voltage v of high power density DC power supplyo。
The control circuit is constructed by sample circuit 4, main control chip 2 and driver 3, the feedback input end of main control chip
It is connect with the output end of sample circuit, the control communication ends of main control chip are connect with human-computer interaction module, the output of main control chip
End is connect by driver with the conducting control terminal of two-way DC/DC high-frequency isolation circuit, and the output end of main control chip also passes through drive
Dynamic device is connect with the conducting control terminal of two-way DC/DC polarity regulating circuit.
The human-computer interaction module and control chip, i.e., the master control DSP in the present embodiment have communication connection, Ke Yixiang
The setting instruction of DSP transfer overvoltage is also subjected to the power state information that DSP is transmitted.
Higher power density may be implemented in the DC power supply that the present embodiment proposes.It, can compared to traditional DC power supply
Equipment cost under the premise of meeting power demand, is greatly reduced, equipment volume is reduced.
The DC power supply that the present embodiment proposes does not change the electrical of original electrical equipment while miniaturization, portability
Connection, using convenient with later maintenance.
The control circuit of the present embodiment acquires the voltage of output end, current information, it is convenient to integrated power meter function.
Above-mentioned embodiment is only a preferred solution of the present invention, not the present invention is made in any form
Limitation, there are also other variations and modifications on the premise of not exceeding the technical scheme recorded in the claims.
Claims (4)
1. a kind of high power density DC power supply, it is characterised in that: include:
Rectification circuit, the alternating current for inputting power grid are converted to direct current；
DC transfer circuit carries out Partial Power adjusting to the direct current of input, for adjusting electric power output voltage or electric current；
Control circuit is set for acquiring the amplitude of input, output voltage or electric current, and according to the voltage that human-computer interaction module provides
Definite value constructs control signal so as to adjust DC transfer circuit；
Human-computer interaction module, voltage needed for being set for user, and show the output state of power supply.
2. high power density DC power supply according to claim 1, it is characterised in that: the DC transfer circuit includes:
Two-way DC/DC high-frequency isolation circuit, is realized using isolated topology, for realizing high-frequency isolation；
Two-way DC/DC polarity regulating circuit is realized that output voltage is bipolarity and is adjusted by full-bridge or half-bridge topology；
As the DC voltage v that rectification circuit obtainsdcinLess than required output voltage voWhen, DC transfer circuit output voltage vdcoFor
Positive value；As the DC voltage v that rectification circuit obtainsdcinGreater than required output voltage voWhen, DC transfer circuit output voltage vdco
For negative value.
3. high power density DC power supply according to claim 2, it is characterised in that:
The output voltage v of DC transfer circuitDco,After the output end of DC transfer circuit passes through polarity selecting circuit, with rectified current
The voltage v of road outputdcinSeries connection forms total output voltage v of high power density DC power supplyo。
4. high power density DC power supply according to claim 2, it is characterised in that: the control circuit is by sampling electricity
Road, main control chip and driver building, the feedback input end of main control chip and the output end of sample circuit connect, main control chip
Control communication ends are connect with human-computer interaction module, and the output end of main control chip passes through driver and two-way DC/DC high-frequency isolation electricity
The conducting control terminal on road connects, and the output end of main control chip also passes through the conducting of driver Yu two-way DC/DC polarity regulating circuit
Control terminal connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910399048.7A CN110380631A (en) | 2019-05-14 | 2019-05-14 | High power density DC power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910399048.7A CN110380631A (en) | 2019-05-14 | 2019-05-14 | High power density DC power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110380631A true CN110380631A (en) | 2019-10-25 |
Family
ID=68248528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910399048.7A Pending CN110380631A (en) | 2019-05-14 | 2019-05-14 | High power density DC power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110380631A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114336571A (en) * | 2020-09-30 | 2022-04-12 | 西安西电高压开关有限责任公司 | Direct current power grid access method and system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315779A (en) * | 2010-07-09 | 2012-01-11 | 南京工业大学 | series type electric energy quality compensator based on AC/AC chopper |
| CN108365626A (en) * | 2018-02-28 | 2018-08-03 | 江苏建筑职业技术学院 | A kind of intelligent residential district power supply system based on solid-state transformer |
| CN109713910A (en) * | 2019-01-16 | 2019-05-03 | 浙江省检验检疫科学技术研究院 | Only handle the alternating current steady voltage plug of Partial Power |
-
2019
- 2019-05-14 CN CN201910399048.7A patent/CN110380631A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315779A (en) * | 2010-07-09 | 2012-01-11 | 南京工业大学 | series type electric energy quality compensator based on AC/AC chopper |
| CN108365626A (en) * | 2018-02-28 | 2018-08-03 | 江苏建筑职业技术学院 | A kind of intelligent residential district power supply system based on solid-state transformer |
| CN109713910A (en) * | 2019-01-16 | 2019-05-03 | 浙江省检验检疫科学技术研究院 | Only handle the alternating current steady voltage plug of Partial Power |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114336571A (en) * | 2020-09-30 | 2022-04-12 | 西安西电高压开关有限责任公司 | Direct current power grid access method and system |
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Application publication date: 20191025 |