CN105703464A - Power supply system - Google Patents
Power supply system Download PDFInfo
- Publication number
- CN105703464A CN105703464A CN201610156413.8A CN201610156413A CN105703464A CN 105703464 A CN105703464 A CN 105703464A CN 201610156413 A CN201610156413 A CN 201610156413A CN 105703464 A CN105703464 A CN 105703464A
- Authority
- CN
- China
- Prior art keywords
- changer
- direct current
- power system
- electric power
- current energy
- 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.)
- Pending
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Classifications
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention relates to the field of a power system and particularly to a power supply system. The power supply supplies power to a load by adopting mains supply alternating current electric energy; the power supply system comprises a rectifier module used for converting the mains supply alternating current electric energy into direct current electric energy to output, a first DC-DC converter connected with the rectifier module and used for converting the constant direct current electric energy into variable direct current electric energy, a storage battery connected with the first DC-DC converter and used for storing the variable direct current electric energy converted by the first DC-DC converter, a second DC/DC converter connected with the rectifier module and used for converting the constant direct current electric energy into variable direct current electric energy, and a supercapacitor connected with the second DC-DC converter and used for storing the variable direct current electric energy converted by the second DC-DC converter.
Description
Technical field
The present invention relates to field of power, particularly relate to a kind of electric power system。
Background technology
Electric power system is exactly produced electric energy supply by what power-supply system and electrical power trans mission/distribution system formed and flowed to the system of electrical equipment。Generally adopting in current prior art and mains electricity is converted to galvanic mode is load supplying, but when once time utility grid is collapsed, then load can not obtain electric energy, it is impossible to the continued power of proof load。
Summary of the invention
For problems of the prior art, the invention provides one and include super capacitor and accumulator, it is possible to be DC load continued power when civil power collapses。
The present invention adopts the following technical scheme that
A kind of electric power system, being applied to adopt mains electric energy is load supplying, and described electric power system includes:
Rectification module, is converted to direct current energy by described mains electric energy and exports；
Oneth DC/DC changer, is connected with described rectification module, and constant described direct current energy is converted to variable direct current energy；
Accumulator, is connected with a described DC/DC changer, by the variable direct current energy storage of a described DC/DC changer conversion；
2nd DC/DC changer, is connected with described rectification module, and constant described direct current energy is converted to variable direct current energy；
Super capacitor, is connected with described 2nd DC/DC changer, by the variable direct current energy storage of described 2nd DC/DC changer conversion。
Preferably, a described DC/DC changer is for isolating two-way slab bridge DC/DC changer。
Preferably, described 2nd DC/DC changer is two-way slab bridge DC/DC changer。
Preferably, described electric power system also includes:
DC load, is connected with described rectification circuit, receives the direct current energy of described rectification module output。
Preferably, described electric power system also includes:
Inverter, is connected with described rectification module, receives the direct current energy of described rectification module output and described direct current energy is converted to AC energy output。
Preferably, described electric power system also includes:
AC load, is connected with described inverter, receives the AC energy of described inverter conversion。
Preferably, a described DC/DC changer includes:
First input end and the first outfan, between described first input end and described first outfan, Rhizoma Nelumbinis connects；
Described input is in series with an inductance, and described outfan is parallel with an electric capacity。
Preferably, in a described DC/DC changer, described first input end is connected with multiple metal-oxide-semiconductors, and described outfan is connected with multiple metal-oxide-semiconductors, each described metal-oxide-semiconductor electric capacity all in parallel, and
Connect, with cut-off control Rhizoma Nelumbinis, the capacitance that winding is connected by controlling the conducting of described metal-oxide-semiconductor。
Preferably, described 2nd DC/DC changer includes:
Second input and the second outfan, described second input and a Capacitance parallel connection, described second outfan and a Capacitance parallel connection；
Described second input and an inductance are in parallel with a metal-oxide-semiconductor after connecting。
Preferably, described 2nd DC/DC changer also includes a metal-oxide-semiconductor, connects with described inductance。
The invention has the beneficial effects as follows:
The present invention can not only provide electric energy for DC load and AC load under civil power, can also ensure that civil power guarantees being powered for load continuous in a crash situation, it is ensured that the power supply safety of power system simultaneously。
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of electric power system of the present invention；
Fig. 2 is the circuit topology figure of the present invention the oneth DC/DC changer；
Fig. 3 is the circuit topology figure of the present invention the 2nd DC/DC changer。
Detailed description of the invention
It should be noted that when not conflicting, following technical proposals, can be mutually combined between technical characteristic。
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described:
Invention broadly provides a kind of electric power system, as shown in Figure 1, adopting civil power is that AC load is powered, owing to civil power is AC energy, exporting to AC load so needing to adopt a rectification module (rectification circuit) that mains electric energy is converted to direct current energy, providing electric energy to AC load。The present embodiment also includes an inverter, the direct current energy that above-mentioned rectification module exports is converted to AC energy and exports to AC load again, and thus civil power electric energy not only can be powered for DC load but also can be powered for AC load。
The present embodiment also includes a DC/DC changer, this transducer can be storage battery power supply, the circuit diagram of this transducer is as shown in Figure 2, the input of the present embodiment is connected to the primary side winding of transformator by boost inductance L1, actually transformer primary side winding side is equivalent to the combination of a Boost circuit and a Half bridge rectifier circuit, input Ui, inductance L1, metal-oxide-semiconductor Q1, Q2, electric capacity C1 and electric capacity C2 constitutes the model of an equivalent Boost circuit, when Q1 and Q2 alternate conduction, the former avris making transformator T produces alternating voltage, sense secondary, rectification is carried out by Q3 and Q4, it should be noted that Q1～Q4 is possible not only to as metal-oxide-semiconductor can also be commutation diode, the DC voltage after boosting is obtained by outfan Uo after the capacitor filtering of electric capacity C3 and C4, can be seen that the boosting work in the present embodiment is mainly by the Boost equivalent circuit of former avris and what booster transformer T completed。
Further, present embodiments provide the 2nd DC/DC changer, this transducer can provide storage electric energy for super capacitor, the outstanding advantages of super capacitor is that power density is high, the discharge and recharge time is short, have extended cycle life, operating temperature range width, the circuit diagram of this transducer is as shown in Figure 3,2nd DC/DC changer can be the DC-DC conversion circuit of bi-directional half bridge type, it has the advantage of topological structure, therefore can carry out the transformation of functions easily in the process of work, fundamentally ensure the high-efficiency operation of body and promote work efficiency。The present embodiment will be analyzed with regard to bi-directional half bridge changer state under boosting, two kinds of mode of operations of blood pressure lowering, first introduces bi-directional half bridge DC-DC converter boost operating mode。
In such a mode, power switch S1 is with constant switching frequency, S1, S2 in the present embodiment can be metal-oxide-semiconductor, and S1 can adopt the mode of PWM to work, when switching S1 and being in the conduction state, switch S2 disconnects, battery voltage U1 is all added on inductance L, inductive current iL linear increase, and electric energy is stored in inductance L with the form of magnetic field energy, owing to switch S2 disconnects, power to output capacitance C2 '。When switching S1 and turning off, switch S2 Guan Bi, inductive current iL is flowed to outlet side U2 by S2, and the energy storage of input U1 and inductance L is shifted to electric capacity C2 ', thus giving output capacitance C2 ' charging。Now being added in the voltage on inductance L is U1-U2, because U1 < U2, therefore iL linearly reduces。Therefore, by adjusting the dutycycle of S1, thus it is possible to vary the size of output voltage。
Under bi-directional half bridge DC-DC converter blood pressure lowering mode of operation, power switch S2, with constant switching frequency, adopts the mode of PWM to work, and when switching S2 conducting, output voltage U2 is added on S1 and inductance L, input capacitance Cl ', therefore switch S1 cut-off。Owing to input capacitance voltage remains unchanged, being therefore added in the voltage on inductance L is U2-U1。Because U2 > U1, therefore inductive current iL linear increase, the mechanical energy of motor the electric energy being converted to is stored in inductance L with the form of magnetic field energy, it is possible to simultaneously to output set of cells charging。When S2 turns off, inductive current iL is by switching S1 afterflow, and the voltage being now added on inductance L is-U1, and inductive current iL linearly reduces, and the energy storage of inductance L is shifted to set of cells。Therefore, by adjusting the dutycycle of S2, thus it is possible to vary the size of voltage U1 and inductive current iL。Such control method can control the charging current of set of cells on the one hand well, can control the braking degree of depth of motor on the other hand well。
In sum, the present invention can not only provide electric energy for DC load and AC load under civil power, can also ensure that civil power guarantees being powered for load continuous in a crash situation, it is ensured that the power supply safety of power system simultaneously。
By illustrating and accompanying drawing, give the exemplary embodiments of the ad hoc structure of detailed description of the invention, based on present invention spirit, also can do other conversion。Although foregoing invention proposes existing preferred embodiment, but, these contents are not intended as limitation。
For a person skilled in the art, after reading described above, various changes and modifications will be apparent to undoubtedly。Therefore, appending claims should regard whole variations and modifications of the true intention containing the present invention and scope as。In Claims scope, the scope of any and all equivalence and content, be all considered as still belonging to the intent and scope of the invention。
Claims (10)
1. an electric power system, it is characterised in that being applied to adopt mains electric energy is load supplying, and described electric power system includes:
Rectification module, is converted to direct current energy by described mains electric energy and exports；
Oneth DC/DC changer, is connected with described rectification module, and constant described direct current energy is converted to variable direct current energy；
Accumulator, is connected with a described DC/DC changer, by the variable direct current energy storage of a described DC/DC changer conversion；
2nd DC/DC changer, is connected with described rectification module, and constant described direct current energy is converted to variable direct current energy；
Super capacitor, is connected with described 2nd DC/DC changer, by the variable direct current energy storage of described 2nd DC/DC changer conversion。
2. electric power system according to claim 1, it is characterised in that a described DC/DC changer is for isolating two-way slab bridge DC/DC changer。
3. electric power system according to claim 1, it is characterised in that described 2nd DC/DC changer is two-way slab bridge DC/DC changer。
4. electric power system according to claim 1, it is characterised in that described electric power system also includes:
DC load, is connected with described rectification circuit, receives the direct current energy of described rectification module output。
5. electric power system according to claim 1, it is characterised in that described electric power system also includes:
Inverter, is connected with described rectification module, receives the direct current energy of described rectification module output and described direct current energy is converted to AC energy output。
6. electric power system according to claim 5, it is characterised in that described electric power system also includes:
AC load, is connected with described inverter, receives the AC energy of described inverter conversion。
7. electric power system according to claim 1, it is characterised in that a described DC/DC changer includes:
First input end and the first outfan, between described first input end and described first outfan, Rhizoma Nelumbinis connects；
Described input is in series with an inductance, and described outfan is parallel with an electric capacity。
8. electric power system according to claim 7, it is characterised in that in a described DC/DC changer, described first input end is connected with multiple metal-oxide-semiconductors, and described outfan is connected with multiple metal-oxide-semiconductors, each described metal-oxide-semiconductor electric capacity all in parallel, and
Connect, with cut-off control Rhizoma Nelumbinis, the capacitance that winding is connected by controlling the conducting of described metal-oxide-semiconductor。
9. electric power system according to claim 1, it is characterised in that described 2nd DC/DC changer includes:
Second input and the second outfan, described second input and a Capacitance parallel connection, described second outfan and a Capacitance parallel connection；
Described second input and an inductance are in parallel with a metal-oxide-semiconductor after connecting。
10. electric power system according to claim 9, it is characterised in that described 2nd DC/DC changer also includes a metal-oxide-semiconductor, connects with described inductance。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610156413.8A CN105703464A (en) | 2016-03-17 | 2016-03-17 | Power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610156413.8A CN105703464A (en) | 2016-03-17 | 2016-03-17 | Power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105703464A true CN105703464A (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610156413.8A Pending CN105703464A (en) | 2016-03-17 | 2016-03-17 | Power supply system |
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| CN (1) | CN105703464A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106357118A (en) * | 2016-09-07 | 2017-01-25 | 北京交通大学 | Bidirectional DC/DC converter capable of eliminating reactive power |
| CN108199473A (en) * | 2017-12-28 | 2018-06-22 | 施耐德万高（天津）电气设备有限公司 | A kind of fire-fighting power supply monitoring system power source special and its control method |
| CN109661765A (en) * | 2017-06-27 | 2019-04-19 | 华为技术有限公司 | Buck chip controls method, buck chip and electronic equipment |
| CN111162598A (en) * | 2018-11-08 | 2020-05-15 | 中车永济电机有限公司 | Auxiliary power supply device of high-power electric locomotive |
| CN111490567A (en) * | 2019-01-28 | 2020-08-04 | 青岛海信移动通信技术股份有限公司 | Mobile terminal and power supply control method thereof |
| CN113809939A (en) * | 2021-09-23 | 2021-12-17 | 北京百度网讯科技有限公司 | AC/DC distribution system and method |
| WO2023227108A1 (en) * | 2022-05-26 | 2023-11-30 | 南京泉峰科技有限公司 | Bidirectional power supply apparatus and system |
-
2016
- 2016-03-17 CN CN201610156413.8A patent/CN105703464A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106357118A (en) * | 2016-09-07 | 2017-01-25 | 北京交通大学 | Bidirectional DC/DC converter capable of eliminating reactive power |
| CN106357118B (en) * | 2016-09-07 | 2019-02-19 | 北京交通大学 | A kind of two-way DC/DC converter for eliminating reactive power |
| CN109661765A (en) * | 2017-06-27 | 2019-04-19 | 华为技术有限公司 | Buck chip controls method, buck chip and electronic equipment |
| CN108199473A (en) * | 2017-12-28 | 2018-06-22 | 施耐德万高（天津）电气设备有限公司 | A kind of fire-fighting power supply monitoring system power source special and its control method |
| CN111162598A (en) * | 2018-11-08 | 2020-05-15 | 中车永济电机有限公司 | Auxiliary power supply device of high-power electric locomotive |
| CN111162598B (en) * | 2018-11-08 | 2023-09-08 | 中车永济电机有限公司 | Auxiliary power supply device of high-power electric locomotive |
| CN111490567A (en) * | 2019-01-28 | 2020-08-04 | 青岛海信移动通信技术股份有限公司 | Mobile terminal and power supply control method thereof |
| CN113809939A (en) * | 2021-09-23 | 2021-12-17 | 北京百度网讯科技有限公司 | AC/DC distribution system and method |
| WO2023227108A1 (en) * | 2022-05-26 | 2023-11-30 | 南京泉峰科技有限公司 | Bidirectional power supply apparatus and system |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160622 |