CN202513831U - Natural free-wheeling alternating current (AC) chopper main circuit structure - Google Patents
Natural free-wheeling alternating current (AC) chopper main circuit structure Download PDFInfo
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- CN202513831U CN202513831U CN2012200896519U CN201220089651U CN202513831U CN 202513831 U CN202513831 U CN 202513831U CN 2012200896519 U CN2012200896519 U CN 2012200896519U CN 201220089651 U CN201220089651 U CN 201220089651U CN 202513831 U CN202513831 U CN 202513831U
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Abstract
The utility model relates to a natural free-wheeling AC chopper main circuit structure. The natural free-wheeling AC chopper main circuit structure is characterized in that the natural free-wheeling AC chopper main circuit structure comprises an AC chopper main circuit which is connected with a single-phase or a three-phase circuit, and an inductive load, wherein the AC chopper main circuit comprises a chopper switch element assembly, inductance coils of L1 and L2, diodes of D1 and D2 and a capacitor of C. The connection of the inductance coils of L1 and L2 and the diodes of D1 and D2 forms a clockwise circulation loop which realizes natural freewheeling of chopper current in the two inductance coils when the chopper switch element is switched off.
Description
Technical field
The utility model relates to civil power AC chopping voltage-regulating technique field, is a kind of AC chopping main circuit structure of natural afterflow.
Background technology
See Fig. 1, AC chopping is a kind of best techniques form that realizes civil power pressure regulation conversion, when the load that connects is inductive behind the AC chopping, because the effect of induction reactance just must be carried out afterflow when chopping switch turn-offs.The afterflow scheme of taking at present is, all is that the version that is employed in the electronic switch of bearing the afterflow effect of being connected in parallel behind the AC chopping switch realizes afterflow; In other words, regardless of the concrete structure of chopping switch circuit, all requisite stream switch 2 that will and continue on the circuit behind the chopping switch 1; Chopping switch and continued flow switch all are to adopt the IGBT switch element; Turning on and off of IGBT switch element needs the time; And in order to prevent that continued flow switch 2 conductings from possibly cause the short circuit to circuit after the copped wave; Must carry out point-device control to the control signal of copped wave electronic switch and afterflow electronic switch, but also must turn-off constantly and the afterflow electronic switch is provided with a blanking time between opening constantly, be commonly called as " Dead Time " at the copped wave electronic switch; " Dead Time " arranged; So can cause the afterflow when the copped wave electronic switch is turn-offing untimely, and owing to need " Dead Time " is set, make the frequency of AC chopping further improve and be restricted.When carrying out three-phase alternating current copped wave, also need carry out more accurate and complicated control to the phase place of the control signal of copped wave electronic switch and afterflow electronic switch.
Summary of the invention
The purpose of the utility model is exactly to overcome the deficiency of AC chopping main circuit structure now; A kind of ad hoc continued flow switch element that do not need is provided; And can realize the AC chopping main circuit structure of nature afterflow; The main circuit structure of the utility model is by the loop of realizing the nature afterflow being connected of two inductance coils and two diodes, realized the timely afterflow just carried out at copped wave electronic switch shutdown moment, is the AC chopping main circuit structure without any need for the natural afterflow of control.
The utility model solves the technical scheme that its technical problem adopted: the AC chopping main circuit structure of natural afterflow; Comprise the AC chopping main circuit and the inductive load that are connected with mains supply; It is characterized in that said AC chopping main circuit comprises chopping switch component element, inductance coil L1, L2, diode D1, D2 and capacitor C, the end separately of two inductance coil L1, L2 links to each other and constitutes point of contact; This point of contact and capacitor C one end join; The other end of inductance coil L1 is connected in series with the negative pole of diode D1, and the other end of inductance coil L2 is connected in series with the positive pole of diode D2, and the positive pole of the output of chopping switch component element and diode D1 and the negative pole point of contact of diode D2 join; The input of chopping switch component element and the electric capacity other end join with supply main respectively, and the two ends of load and capacitor C two ends also connect; Inductance coil L1, L2 and two diode D1, D2 have been connected to form a clockwise circulation loop, and the natural afterflow of chopper current in two inductance coils has been realized when the chopping switch element turn-offs in this circulation loop.
The utility model can also adopt following technical measures to solve: said inductance coil L1, L2 are air core coil or magnetic core coil or iron-core coil.
The input of said chopping switch component element and the electric capacity other end join with the phase line and the neutral line of single phase circuit respectively.
Said AC chopping main circuit comprises chopping switch component element, inductance coil L1-1, L1-2, L2-1, L2-2, L3, diode D1, D2 and capacitor C 1, C2, C3, C4; The positive pole of diode D1 is connected with the negative pole of diode D2; The negative pole of diode D1 and inductance coil L1-1, L1-2 are connected in series; The positive pole of diode D2 and inductance coil L2-1, L2-2 are connected in series; The end of two inductance coil L1-2, L2-2 continuous formation point of contact and capacitor C 3 one ends join; The end of inductance coil L3 links to each other with capacitor C 3 other ends, and the other end links to each other with capacitor C 4 one ends, and the point of contact between inductance coil L1-1, the L1-2 links to each other with capacitor C 1 one ends; Point of contact between inductance coil L1-2, the L2-2 links to each other with capacitor C 2 one ends; The negative pole point of contact of the positive pole of the output of chopping switch component element 3 and diode D1 and diode D2 joins, and the input of chopping switch component element and capacitor C 1, C2, C3, the C4 other end separately join with supply main respectively, and the two ends of load and capacitor C 4 two ends also connect.
Said AC chopping main circuit is applied on the three-phase circuit.
The chopping switch component element is that an igbt transistor and a rectifier bridge constitute.
The chopping switch component element is that two igbt transistors constitute.
The beneficial effect of the utility model is: (1), owing to realized natural afterflow, thus the afterflow when chopping switch is turn-offed is able in time, than the better effects if of the afterflow of the ad hoc continued flow switch element of employing.
(2), the structure of copped wave main circuit is more simple, contrast and before this technology, the utility model has been saved the electronic switching element of serving as the afterflow effect, has improved the reliability of chopper circuit work.
(3), owing to no longer include the situation that current break ends in the load, the alternating voltage waveform in the load has approached sinusoidal wave very much.Therefore can use because general AC chopper is produced in the AC chopping pressure regulation of any character load.
(4), adopt the utility model can produce the low-voltage, high-current generating means that output current can be adjusted on a large scale.
(5), adopt the utility model can also produce AC and DC power supply with automatic voltage regulation function.
Description of drawings
Fig. 1 is the circuit diagram of the utility model prior art.
Fig. 2 is the circuit diagram of the utility model first execution mode.
Fig. 3 is the oscillogram of the current i that civil power forms after through the AC chopping switch element in the utility model first execution mode.
Fig. 4 is the oscillogram that flows through the chopper current i1 of diode D1, inductance coil L1 in the utility model first execution mode.
Fig. 5 is the oscillogram that flows through the freewheel current i12 of inductance coil L1 in the utility model first execution mode.
Fig. 6 is the oscillogram that flows through the chopper current i2 of diode D2, inductance coil L2 in the utility model first execution mode.
Fig. 7 is the oscillogram of the freewheel current i21 of inductance coil L2 in the utility model first execution mode.
Fig. 8 is the circuit diagram of the utility model second execution mode.
Fig. 9 is the circuit diagram of the utility model the 3rd execution mode.
Figure 10 is the utility model the 3rd execution mode alternating voltage waveform figure.
Figure 11 is the circuit diagram of the utility model the 4th execution mode.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
The utility model first execution mode: extremely shown in Figure 7 like Fig. 2; The AC chopping main circuit structure of nature afterflow; Comprise the AC chopping main circuit 1 and inductive load 2 that are connected with mains supply; It is characterized in that said AC chopping main circuit 1 comprises chopping switch component element 3, inductance coil L1, L2, diode D1, D2 and capacitor C, the end separately of two inductance coil L1, L2 links to each other and constitutes point of contact; This point of contact and capacitor C one end join; The other end of inductance coil L1 is connected in series with the negative pole of diode D1, and the other end of inductance coil L2 is connected in series with the positive pole of diode D2, and the positive pole of the output of chopping switch component element and diode D1 and the negative pole point of contact of diode D2 join; The input of chopping switch component element 3 and the electric capacity other end join with supply main respectively, and the two ends of load 2 and capacitor C two ends also connect; Inductance coil L1, L2 and diode D1, D2 have been connected to form a clockwise circulation loop, and the natural afterflow of two inductance coils when the chopping switch element turn-offs has been realized in this circulation loop;
Because the effect of diode D1 and D2 is arranged; Inductance coil L1 goes up and only allows to pass through corresponding to the chopper current i1 of the positive half cycle of civil power; When the each chopping switch element in the civil power positive half period turn-offed, inductance coil L1 accomplished afterflow through the path of inductance coil L2, diode D2 and D1;
Still because the effect of diode D1 and D2; Inductance coil L2 goes up and only allows to pass through corresponding to the chopper current i2 of civil power negative half period; When the each chopping switch element in the civil power negative half-cycle turn-offed, inductance coil L2 accomplished afterflow through the path of diode D2, D1 and inductance coil L1.
Said inductance coil L1, L2 are air core coil or magnetic core coil or iron-core coil.
The input of said chopping switch component element and the electric capacity other end join with the phase line and the neutral line of single phase circuit respectively.
The utility model second execution mode: as shown in Figure 8; Said second execution mode is similar with first execution mode; Difference is; This execution mode is applied to the circuit structure of three-phase chopper control, promptly all connects the AC chopping main circuit of a natural afterflow behind the chopping switch of each phase line, does not specifically detail.
The utility model the 3rd execution mode: extremely shown in Figure 10 like Fig. 9; Said AC chopping main circuit 1 comprises chopping switch component element 3, inductance coil L1-1, L1-2, L2-1, L2-2, L3, diode D1, D2 and capacitor C 1, C2, C3, C4; The positive pole of diode D1 is connected with the negative pole of diode D2; The negative pole of diode D1 and inductance coil L1-1, L1-2 are connected in series; The positive pole of diode D2 and inductance coil L2-1, L2-2 are connected in series, and the end of two inductance coil L1-2, L2-2 continuous formation point of contact and capacitor C 3 one ends join, and the end of inductance coil L3 links to each other with capacitor C 3 other ends; The other end links to each other with capacitor C 4 one ends; Point of contact between inductance coil L1-1, the L1-2 links to each other with capacitor C 1 one ends, and the point of contact between inductance coil L1-2, the L2-2 links to each other with capacitor C 2 one ends, and the positive pole of the output of chopping switch component element 3 and diode D1 and the negative pole point of contact of diode D2 join; The input of chopping switch component element 3 and capacitor C 1, C2, C3, the C4 other end separately join with supply main respectively, and the two ends of load 2 and capacitor C 4 two ends also connect.
In order to make the edge of alternating voltage waveform on the inductive load 2 more along sliding, the voltage sine wave on the inductive load is perfect more, can also be in the AC chopping main circuit of natural afterflow; Or between the AC chopping main circuit of natural afterflow and load, increase filter element; Each inductance coil has been divided into two sections, and two sections centre has increased filter capacitor again, and also in the circuit of the AC chopping main circuit of natural afterflow and load, has been connected in series lc circuit (C1, C2 and L3 form); The uA of accompanying drawing 10, uB are respectively the alternating voltage waveform of ordering corresponding to A point and B in Fig. 9 circuit; Though near sine wave, the edge of waveform presents zigzag to the uA waveform, passes through the filtering of lc circuit more; The waveform edge of uB becomes more slick and sly, has approached normal sinusoidal waveform.If make the voltage waveform in the load further improve again, can also in the circuit of the AC chopping main circuit of natural afterflow and load, be connected in series more multistage lc circuit and carry out multistage filtering.
The utility model the 4th execution mode: shown in figure 11; Similar with the 3rd execution mode; Difference is; Present embodiment is in the circuit of the AC chopping main circuit of natural afterflow and load, to be connected in series one-level lc circuit filtering application in the main circuit structure of three-phase alternating current copped wave, is not detailing at this.
Four above-mentioned execution modes, as the embodiment of chopping switch component element (3), chopping switch component element 3 is that an igbt transistor and a rectifier bridge constitute; Perhaps chopping switch component element 3 is that two igbt transistors constitute.
Above-described embodiment example is merely the utility model preferred embodiment, the equivalent arrangements of being done according to the utility model claim such as, and the technology that all should be the utility model contains.
Claims (7)
1. the AC chopping main circuit structure of natural afterflow; Comprise the AC chopping main circuit (1) and the inductive load (2) that are connected with mains supply; It is characterized in that said AC chopping main circuit (1) comprises chopping switch component element (3), inductance coil L1, L2, diode D1, D2 and capacitor C, the end separately of two inductance coil L1, L2 links to each other and constitutes point of contact; This point of contact and capacitor C one end join; The other end of inductance coil L1 is connected in series with the negative pole of diode D1, and the other end of inductance coil L2 is connected in series with the positive pole of diode D2, and the positive pole of the output of chopping switch component element and diode D1 and the negative pole point of contact of diode D2 join; The input and the electric capacity other end of chopping switch component element (3) join with supply main respectively, and the two ends of load (2) and capacitor C two ends also connect.
2. according to the AC chopping main circuit structure of the said natural afterflow of claim 1, it is characterized in that said inductance coil L1, L2 are air core coil or magnetic core coil or iron-core coil.
3. electric wiring short-circuit protection warning holding circuit according to claim 1 is characterized in that, the input of said chopping switch component element and the electric capacity other end join with the phase line and the neutral line of single phase circuit respectively.
4. according to the AC chopping main circuit structure of the said natural afterflow of claim 1; It is characterized in that; Said AC chopping main circuit (1) comprises chopping switch component element (3), inductance coil L1-1, L1-2, L2-1, L2-2, L3, diode D1, D2 and capacitor C 1, C2, C3, C4; The positive pole of diode D1 is connected with the negative pole of diode D2, and the negative pole of diode D1 and inductance coil L1-1, L1-2 are connected in series, and the positive pole of diode D2 and inductance coil L2-1, L2-2 are connected in series; The end of two inductance coil L1-2, L2-2 continuous formation point of contact and capacitor C 3 one ends join; The end of inductance coil L3 links to each other with capacitor C 3 other ends, and the other end links to each other with capacitor C 4 one ends, and the point of contact between inductance coil L1-1, the L1-2 links to each other with capacitor C 1 one ends; Point of contact between inductance coil L1-2, the L2-2 links to each other with capacitor C 2 one ends; The negative pole point of contact of the output of chopping switch component element (3) and the positive pole of diode D1 and diode D2 joins, and the input of chopping switch component element (3) and capacitor C 1, C2, C3, the C4 other end separately join with supply main respectively, and the two ends of load (2) and capacitor C 4 two ends also connect.
5. according to the AC chopping main circuit structure of claim 1 or 4 said natural afterflows, it is characterized in that said AC chopping main circuit (1) is applied on the three-phase circuit.
6. according to the AC chopping main circuit structure of claim 1 or 5 said natural afterflows, it is characterized in that chopping switch component element (3) is that an igbt transistor and a rectifier bridge constitute.
7. according to the AC chopping main circuit structure of claim 1 or 5 said natural afterflows, it is characterized in that chopping switch component element (3) is that two igbt transistors constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200896519U CN202513831U (en) | 2012-03-12 | 2012-03-12 | Natural free-wheeling alternating current (AC) chopper main circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200896519U CN202513831U (en) | 2012-03-12 | 2012-03-12 | Natural free-wheeling alternating current (AC) chopper main circuit structure |
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| Publication Number | Publication Date |
|---|---|
| CN202513831U true CN202513831U (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200896519U Expired - Lifetime CN202513831U (en) | 2012-03-12 | 2012-03-12 | Natural free-wheeling alternating current (AC) chopper main circuit structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545643A (en) * | 2012-03-12 | 2012-07-04 | 韩亚兰 | Natural freewheeling alternating current chopper main circuit structure |
| RU2566668C1 (en) * | 2014-06-16 | 2015-10-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Новосибирский государственный технический университет" | Alternating voltage regulator |
| RU2580677C1 (en) * | 2014-10-30 | 2016-04-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Новосибирский государственный технический университет" | Step-up/step-down voltage controller |
| CN108243544A (en) * | 2016-12-27 | 2018-07-03 | 松下知识产权经营株式会社 | Sensor device and lighting system |
-
2012
- 2012-03-12 CN CN2012200896519U patent/CN202513831U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545643A (en) * | 2012-03-12 | 2012-07-04 | 韩亚兰 | Natural freewheeling alternating current chopper main circuit structure |
| US9118248B2 (en) | 2012-03-12 | 2015-08-25 | Yalan Han | Naturally freewheeling alternating current chopper main circuit structure |
| RU2566668C1 (en) * | 2014-06-16 | 2015-10-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Новосибирский государственный технический университет" | Alternating voltage regulator |
| RU2580677C1 (en) * | 2014-10-30 | 2016-04-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Новосибирский государственный технический университет" | Step-up/step-down voltage controller |
| CN108243544A (en) * | 2016-12-27 | 2018-07-03 | 松下知识产权经营株式会社 | Sensor device and lighting system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121031 Effective date of abandoning: 20140806 |
|
| RGAV | Abandon patent right to avoid regrant |