CN101599706B - Single-stage alternating-current/direct-current conversion device - Google Patents
Single-stage alternating-current/direct-current conversion device Download PDFInfo
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- CN101599706B CN101599706B CN2008100986528A CN200810098652A CN101599706B CN 101599706 B CN101599706 B CN 101599706B CN 2008100986528 A CN2008100986528 A CN 2008100986528A CN 200810098652 A CN200810098652 A CN 200810098652A CN 101599706 B CN101599706 B CN 101599706B
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Abstract
The invention relates to a single-stage alternating-current/direct-current conversion device comprising an energy storage unit, a magnetic unit and a switch element. The magnetic unit, the energy storage unit and the switch element are electrically connected and are composed of an iron core, a first winding, a second winding, a third winding and at least one output winding, wherein the first winding is coupled with the iron core and derives a first electric energy to the iron core; the second winding is coupled with the iron core and stores a second electric energy to the energy storage unit; the third winding is coupled with the iron core and derives the second electric energy to the iron core; the output winding is coupled with the iron core; and the iron core converts the first electric energy and the second electric energy and outputs a third electric energy by coupling with the output winding; the switch element controls the first winding and the third winding to store energy for the iron core, and control the iron core to release energy for the second winding.
Description
Technical field
The present invention system is about a kind of conversion equipment, especially in regard to a kind of single-stage alternating-current/direct-current conversion device.
Background technology
Power factor (power factor) is to be defined as the ratio of real power (real power) to apparent power (apparent power), or the cosine of an angle mutually (cosine) that formed of representative voltage waveform and current waveform.Wherein, power factor is between 0 to 1, and it is that the load on the indication circuit is resistive load, capacity load or inductive load.
Ideally, power factor equals 1, and it is that the load on the indication circuit is a pure resistive loads, and represents voltage waveform and current waveform in the load to have same phase.When power factor was not equal to 1, it was that the load on the indication circuit is capacity load or inductive load, made the apparent power system of part be converted to real power, and the apparent power system of another part is converted to fictitious power (reactive power).Wherein, real power is to finish the consumed power that the actual start of load is produced, and for example is the consumed power that makes revolution, and fictitious power is to finish the energy loss that the actual start of load is produced.
For reducing the energy loss that produces because of fictitious power, prior art system proposes a kind of alternating-current/direct-current change-over circuit.Please refer to shown in Figure 1ly, existing alternating-current/direct-current change-over circuit 1 is to comprise AC power 16, full-bridge rectifier 11, first transformer 12, second transformer 13 and switch 14.Wherein, first transformer 12 is to electrically connect with the full-bridge rectifier 11 and second transformer 13 respectively, and switch 14 is to electrically connect with second transformer 13.
Above-mentioned existing alternating-current/direct-current change-over circuit 1 is the conversion of doing signal via first transformer 12 and second transformer 13, yet, after the start through two transformers, with the conversion loss that produces twice.
In addition, now electronic installation system with light, thin, short, little be designer trends, if first transformer 12 and second transformer 13 can be integrated into single element, can reduce component number, and make electronic installation more save space or more frivolous, and can reduce the loss of conversion, and then save production cost and raise the efficiency.Therefore, how to provide a kind of and can reduce component number, and reduce the single-stage alternating-current/direct-current conversion device of the transition loss of energy, real is the Shu of important topic now.
Summary of the invention
Because above-mentioned problem, the present invention's purpose can reduce component number for providing a kind of, and reduces the single-stage alternating-current/direct-current conversion device of the transition loss of energy.
For reaching above-mentioned purpose, the invention provides a kind of single-stage alternating-current/direct-current conversion device, it is to comprise energy-storage units, magnet unit and switch element.Magnet unit system and energy-storage units and switch element electrically connect, and have an iron core, first winding, second winding, the tertiary winding and at least one output winding.Wherein, first winding system couples with iron core, and draws one first electric energy to iron core.Second winding system couples with iron core, and with one second electrical power storage to energy-storage units.Tertiary winding system couples with iron core, and draws second electric energy to iron core.Output winding system couples with iron core, wherein iron core system conversion first electric energy and second electric energy and export the 3rd electric energy via the output winding coupled.Switch element is controlled described first winding and the described tertiary winding to this iron core energy storage, and the described iron core of control is released energy to described second winding.
From the above, according to the present invention's single-stage alternating-current/direct-current conversion device, it is that first winding, second winding, the tertiary winding and output winding are coupled to identical iron core.Compare with prior art, the present invention's single-stage alternating-current/direct-current conversion device only uses a magnet unit, and therefore, the present invention's single-stage alternating-current/direct-current conversion device is except that the transition loss that can reduce electric energy, more can save the space, and then reduce production costs.
Description of drawings
Fig. 1 is the existing schematic diagram that exchanges current/direct-current conversion device;
Fig. 2 is the schematic diagram of the single-stage alternating-current/direct-current conversion device of preferred embodiment of the present invention;
Fig. 3 and Fig. 4 are the operation chart of single-stage alternating-current/direct-current conversion device; And
Fig. 5 A to Fig. 5 C is the enforcement aspect variation diagram of the single-stage alternating-current/direct-current conversion device of preferred embodiment of the present invention.
Embodiment
Hereinafter with reference to correlative type, the single-stage alternating-current/direct-current conversion device according to preferred embodiment of the present invention is described.
Please refer to shown in Figure 2ly, the single-stage alternating-current/direct-current conversion device 2 of preferred embodiment of the present invention is to comprise magnet unit 21, switch element 22 and energy-storage units 23.Wherein, magnet unit 21 is to electrically connect with switch element 22 and energy-storage units 23 respectively.Present embodiment more comprises power-supply unit 24, and it is to electrically connect with magnet unit 21.
In addition, the single-stage alternating-current/direct-current conversion device 2 of present embodiment more comprises first rectification unit 25, second rectification unit 26 and the 3rd rectification unit 27.First rectification unit 25 is to electrically connect with first winding 212 and power-supply unit 24, second rectification unit 26 is to electrically connect with second winding 213 and energy-storage units 23, and the 3rd rectification unit 27 is to electrically connect with first winding 212 and the tertiary winding 214.
Yet, in present embodiment, and the connected mode of non-limiting second rectification unit 26 and the 3rd rectification unit 27, those skilled in the art, when can utilizing second rectification unit 26 and second winding 213 and earth terminal GND to electrically connect, or utilize the 3rd rectification unit 27 and the tertiary winding 214 and energy-storage units 23 to electrically connect and reach identical functions.On the Yu Shizuo, first rectification unit 25, second rectification unit 26 and the 3rd rectification unit 27 are to comprise diode respectively.
Please continue with reference to shown in Figure 2, power-supply unit 24 comprises AC power 241 and rectifier 242.Rectifier 242 is to electrically connect with magnet unit 21.AC power 241 is output AC signal S
11To rectifier 242, and rectifier 242 is according to AC signal S
11Export the first electric energy E
1In present embodiment, rectifier 242 is to can be semibridge system rectifier or full bridge rectifier.
Below, will describe the start situation of single-stage alternating-current/direct-current conversion device 2 in detail.Please refer to shown in Figure 3, when switch element 22 via switching the switching signal S that signal line transmitted
12Control it as conducting state, and the power-supply unit 24 outputs first electric energy E
1, at this moment, power-supply unit 24, first rectification unit 25, first winding 212 and switch element 22 are to form a loop, and make first winding 212 draw the first electric energy E
1To iron core 211.In addition, energy-storage units 23, the tertiary winding 214, the 3rd rectification unit 27 and switch element 22 are to form a loop, and make the tertiary winding 214 draw the second electric energy E
2To iron core 211.
Referring again to shown in Figure 4, when switch element 22 via switching the switching signal S that signal line transmitted
12When controlling it as cut-off state, first winding 212 and the tertiary winding 214 stop to draw the first electric energy E respectively
1And the second electric energy E
2
At this moment, second winding 213, second rectification unit 26, energy-storage units 23 are to form a loop, and therefore, iron core 211 can release energy to second winding 213, in order to do making second winding 213 with the second electric energy E
2Be stored to energy-storage units 23.In addition, output winding 215, the 4th rectification unit 28 and load 29 are to form a loop, and therefore, iron core 211 can release energy to output winding 215, in order to do making the 4th winding 215 outputs the 3rd electric energy E
3To load 29.
In brief, in above-mentioned start, when switch element 22 is conducting state, first winding 212 and the tertiary winding 214 are electric energy is transformed into iron core 211 and is stored in iron core with the state of magnetic energy, and when switch element 22 was cut-off state, 211 of iron cores were converted to second winding 213 and output winding 215 with the magnetic energy that store and again with the state output of electric energy.
In present embodiment, energy-storage units 23 is to comprise electric capacity, and load 29 is to can be DC load, and it for example can comprise light-emittingdiode or microprocessor etc.
In addition, under above-mentioned framework, energy-storage units 23 can stop output AC signal S in the short time in AC power 241
11The time, discharge its stored electric energy, with the electric energy that in the retention time (hold-uptime), continues to provide load required.
Moreover, in the present embodiment, under this framework, control model according to different can make single-stage alternating-current/direct-current conversion device 2 operate in continuous conduction mode (continuous-current-conduction mode) or DCM (discontinuous-current-conduction mode).
In addition, shown in Fig. 5 A, the magnet unit 21 of present embodiment also can comprise a plurality of output windings 215 parallel with one another, and wherein respectively exporting winding 215 is to be coupled to iron core 211, and drives load 29.Yet in present embodiment, and the non-limiting winding of respectively exporting need have the identical number of turn, and the user is when can be according to its demand, and designs the output winding of the various different numbers of turn, to drive various loads, do not limited in this.
And for example shown in Fig. 5 B, the magnet unit 21 of present embodiment also can comprise a plurality of output windings 215,215a, the 215b of mutual series connection, wherein exports winding 215,215a, 215b are coupled to iron core 211, and drives corresponding load 29,29a, 29b respectively.And for example shown in Fig. 5 C, the magnet unit 21 of present embodiment also can comprise plural number output winding 215,215a, 215b, and it is to be respectively coupled to iron core 211, and drives corresponding load 29,29a, 29b.Yet those skilled in the art be when knowing, respectively exporting winding and also can have the identical number of turn in Fig. 5 B and Fig. 5 C more can drive identical load and respectively export winding, do not limited in this
In sum, because of foundation the present invention's single-stage alternating-current/direct-current conversion device, it is that first winding, second winding, the tertiary winding and output winding are set around identical iron core.Compare with prior art, the present invention's single-stage alternating-current/direct-current conversion device only uses a magnet unit.Therefore, the present invention's single-stage alternating-current/direct-current conversion device more can be saved the space, and then reduce production costs except that the transition loss that can reduce electric energy.In addition, the present invention's single-stage alternating-current/direct-current conversion device system can provide load to have the 3rd electric energy of low ripple voltage by energy-storage units.In addition, the present invention's energy-storage units also provides the retention time of single-stage alternating-current/direct-current conversion device abundance, and it meant in blink, when AC signal stops to input to rectifier, provide load required electric energy by this energy-storage units, and make load can keep normal running.
The above only is an illustrative, but not is restricted person.Any spirit and category that does not break away from the present invention, and to its equivalent modifications of carrying out or change, all should be contained in the attached claim in back.
Claims (9)
1. single-stage alternating-current/direct-current conversion device comprises:
One energy-storage units;
One magnet unit, itself and described energy-storage units electrically connect, and have:
One iron core;
One first winding, itself and described iron core couple, and draw one first electric energy to described iron core;
One second winding, itself and described iron core couple, and with one second electrical power storage to described energy-storage units;
One tertiary winding, itself and described iron core couple, and draw described second electric energy to this iron core; And
At least one output winding, itself and described iron core couple, and wherein said iron core system described first electric energy of conversion and described second electric energy are also exported the 3rd electric energy via described output winding coupled; And
Switch element, itself and described magnet unit electrically connect, and control described first winding and the described tertiary winding to this iron core energy storage, and the described iron core of control is released energy to described second winding.
2. single-stage alternating-current/direct-current conversion device as claimed in claim 1, wherein said first winding, described second winding, the described tertiary winding and described output winding system are set around described iron core.
3. single-stage alternating-current/direct-current conversion device as claimed in claim 1 more comprises:
Power-supply unit, itself and described magnet unit electrically connect, and export described first electric energy.
4. single-stage alternating-current/direct-current conversion device as claimed in claim 3 more comprises:
One first rectification unit, itself and described first winding and described power-supply unit electrically connect.
5. single-stage alternating-current/direct-current conversion device as claimed in claim 3, wherein said power-supply unit comprises a rectifier, and it exports described first electric energy according to an AC power.
6. single-stage alternating-current/direct-current conversion device as claimed in claim 1, wherein said switch element are controlled described output winding and are released energy.
7. single-stage alternating-current/direct-current conversion device as claimed in claim 1 more comprises:
One second rectification unit, itself and described second winding and described energy-storage units electrically connect; And
One the 3rd rectification unit, itself and described first winding and the described tertiary winding electrically connect.
8. single-stage alternating-current/direct-current conversion device as claimed in claim 1, wherein when described magnet unit had a plurality of output winding, described a plurality of output windings coupled with described iron core respectively.
9. single-stage alternating-current/direct-current conversion device as claimed in claim 8, wherein said a plurality of output windings are connected mutually or are in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100986528A CN101599706B (en) | 2008-06-05 | 2008-06-05 | Single-stage alternating-current/direct-current conversion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100986528A CN101599706B (en) | 2008-06-05 | 2008-06-05 | Single-stage alternating-current/direct-current conversion device |
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| Publication Number | Publication Date |
|---|---|
| CN101599706A CN101599706A (en) | 2009-12-09 |
| CN101599706B true CN101599706B (en) | 2011-08-24 |
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|---|---|---|---|
| CN2008100986528A Expired - Fee Related CN101599706B (en) | 2008-06-05 | 2008-06-05 | Single-stage alternating-current/direct-current conversion device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4758937A (en) * | 1986-01-16 | 1988-07-19 | Sanken Electric Company, Ltd. | DC-DC converter |
| EP0505982A1 (en) * | 1991-03-26 | 1992-09-30 | Hitachi, Ltd. | Switching regulator |
| CN1160877A (en) * | 1995-09-22 | 1997-10-01 | 日本保护装置销售公司 | Uninterruptive switching regulator |
| CN1538608A (en) * | 2003-02-06 | 2004-10-20 | 富士电机电子设备技术株式会社 | Switch power-supply device |
-
2008
- 2008-06-05 CN CN2008100986528A patent/CN101599706B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4758937A (en) * | 1986-01-16 | 1988-07-19 | Sanken Electric Company, Ltd. | DC-DC converter |
| EP0505982A1 (en) * | 1991-03-26 | 1992-09-30 | Hitachi, Ltd. | Switching regulator |
| CN1160877A (en) * | 1995-09-22 | 1997-10-01 | 日本保护装置销售公司 | Uninterruptive switching regulator |
| CN1538608A (en) * | 2003-02-06 | 2004-10-20 | 富士电机电子设备技术株式会社 | Switch power-supply device |
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| Publication number | Publication date |
|---|---|
| CN101599706A (en) | 2009-12-09 |
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