CN204992589U - Three -phase AC intelligent control circuit - Google Patents
Three -phase AC intelligent control circuit Download PDFInfo
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- CN204992589U CN204992589U CN201520781373.7U CN201520781373U CN204992589U CN 204992589 U CN204992589 U CN 204992589U CN 201520781373 U CN201520781373 U CN 201520781373U CN 204992589 U CN204992589 U CN 204992589U
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Abstract
The utility model discloses a can realize the three -phase AC intelligent control circuit of stepless voltage regulation, its structure includes: three phase line voltage control circuit, every phase line voltage control circuit includes: current sensor, voltage sensor and transformer, the transformer on the coiling have phase line coil and regulating winding, the phase line coil concatenates in corresponding phase line circuit, the output of phase line coil and the outgoing line of phase line link to each other, and the input of regulating winding links to each other with the output of phase line coil, and the control circuit who is equipped with filter inductor and is used for controlling the regulating winding break -make that still goes here and there between the output of regulating winding and the zero line of alternating current is regulating winding control circuit, current sensor concatenates in the incoming line circuit of phase line coil, and voltage sensor connects on the outgoing line of corresponding phase line coil. Three -phase AC intelligent control circuit can use widely in the supply circuit of perception, capacitive and resistive load.
Description
Technical field
The utility model relates to a kind of interchange intelligent control circuit, refers more particularly to a kind of three-phase alternating current intelligent control circuit.
Background technology
At present, in traditional three-phase alternating current intelligent control circuit, what mostly adopt is that the mode of multistage (shelves) pressure regulation carries out dynamic voltage adjustment to three-phase input voltage.Voltage accuracy after this mode adjusts is not very high, and the response time is longer, when voltage instability, frequently switches between many grades, uses for a long time, easily causes device failure and aging, reduction of service life.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of three-phase alternating current intelligent control circuit realizing stepless voltage regulation.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: three-phase alternating current intelligent control circuit, comprise: three phases line voltage control circuits, each phases line voltage control circuit comprises: current sensor, voltage sensor and transformer, transformer is wound with phase line coil and regulating winding, phase line coil tandem is in corresponding phase line circuit, that is: the input of phase line coil is connected with the incoming line of phase line, the output of phase line coil is connected with the outlet line of phase line, the input of described regulating winding is connected with the output of phase line coil, also go here and there between the output of described regulating winding and the zero line of alternating current and be provided with filter inductance and for the control circuit of regulating and controlling coil break-make and regulating winding control circuit, described current sensor is serially connected in the incoming line of phase line coil, and described voltage sensor is attempted by the output of corresponding phase line coil.
As a kind of preferred version, in described three-phase alternating current intelligent control circuit, described phase line coil is 1:7 ~ 7.5 with the ratio of the number of turns of regulating winding.
As a kind of preferred version, in described three-phase alternating current intelligent control circuit, between three described phase line coils and three regulating windings, be provided with the by-pass switch of three-phase ganged.
As a kind of preferred version, in described three-phase alternating current intelligent control circuit, the concrete structure of described regulating winding control circuit comprises: insulated gate bipolar transistor, diode under diode and upper half on the upper half controlling upper half conducting, and on the lower half controlling lower half conducting diode under diode and lower half, on upper half, the positive pole of diode is connected with the respective end of filter inductance after being connected with the negative pole of diode under lower half, under upper half, the negative pole of diode is connected with the zero line of alternating current after being connected with the positive pole of diode on lower half, on upper half, the negative pole of diode is connected with the drain electrode of insulated gate bipolar transistor after being connected with the negative pole of diode on lower half, under upper half, the positive pole of diode is connected with the source electrode of insulated gate bipolar transistor after being connected with the positive pole of diode under lower half.
On described upper half on the positive pole of diode and lower half diode positive pole between go back and be connected to the first rc filter circuit.
As a kind of preferred version, in described three-phase alternating current intelligent control circuit, go back between the drain electrode of described insulated gate bipolar transistor and source electrode and be connected to the second rc filter circuit.
As a kind of preferred version, in described three-phase alternating current intelligent control circuit, the two ends of described regulating winding are also connected to building-out capacitor.
As a kind of preferred version, in described three-phase alternating current intelligent control circuit, described current sensor is current transformer.
The beneficial effects of the utility model are: the utility model adopts the brand new ideas of electricity, magnetic, electric system shift equilibrium, regulate and monitoring by achieving phase-splitting to three phase supply, realize three-phase stepless voltage regulation, in pressure regulation process, the useless electricity of Absorbable rod electric power system, stored in building-out capacitor, be organized into power consumption, reduce the line loss of power consumption equipment and the iron loss of transformer self and copper loss simultaneously, both improved power quality, and in turn saved the energy.In addition, the utility model is by adopting insulated gate bipolar transistor and support circuit thereof, substantially increase the response time in Voltage Cortrol process, further improve the quality of power supply, this is for particularly important concerning the higher precision equipment of power supply quality requirement.
Accompanying drawing explanation
Fig. 1 is electric principle assumption diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, describe the specific embodiments of three-phase alternating current intelligent control circuit described in the utility model in detail for phase line L1:
As shown in Figure 1, a kind of three-phase alternating current intelligent control circuit described in the utility model, comprise: three phases line voltage control circuits, the phases line voltage control circuit of phase line L1 comprises: transformer T1 and the current transformer ATC be serially connected in the incoming line of phase line coil and the voltage sensor be attempted by the outlet line of phase line coil (belong to the conventional techniques of this area, not shown in FIG.), transformer T1 is wound with phase line coil and regulating winding, phase line coil is 1:7 ~ 7.5 with the ratio of the number of turns of regulating winding, phase line coil tandem is in corresponding phase line circuit, that is: the input of phase line coil is connected with the incoming line of phase line L1, the output of phase line coil is connected with the outlet line of phase line L1, the input of described regulating winding is connected with the output of phase line coil, also go here and there between the output of regulating winding and the zero line of alternating current and be provided with filter inductance B1 and for the control circuit of regulating and controlling coil break-make and regulating winding control circuit, the concrete structure of this regulating winding control circuit comprises: insulated gate bipolar transistor, diode under diode and upper half on the upper half controlling upper half conducting, and on the lower half controlling lower half conducting diode under diode and lower half, on upper half, the positive pole of diode is connected with the respective end of filter inductance after being connected with the negative pole of diode under lower half, under upper half, the negative pole of diode is connected with the zero line of alternating current after being connected with the positive pole of diode on lower half, on upper half, the negative pole of diode is connected with the drain electrode of insulated gate bipolar transistor after being connected with the negative pole of diode on lower half, under upper half, the positive pole of diode is connected with the source electrode of insulated gate bipolar transistor after being connected with the positive pole of diode under lower half, on described upper half on the positive pole of diode and lower half diode positive pole between go back and be connected to the first rc filter circuit, go back between the drain electrode of described insulated gate bipolar transistor and source electrode and be connected to the second rc filter circuit, in the present embodiment, the two ends of described regulating winding respectively and be connected to corresponding building-out capacitor, the by-pass switch QF1 of three-phase ganged is provided with between the output of three described phase line coils and three regulating windings.
When practical application, between the input of three described phase line coils and three-phase alternating current, be provided with the three-phase power switch QF of three-phase ganged.
Operation principle of the present utility model is: by the voltage of the electric current of the incoming line of D.C mutual-inductor sampling phase line coil and the output by voltage sensor sampling phase line coil, come the switching frequency by changing insulated gate bipolar transistor (IGBT) and switching time (duty ratio), thus reach the object of the output voltage adjusting corresponding phase line coil.
In sum, be only preferred embodiment of the present utility model, not be used for limit the utility model implement scope, all equalizations done according to shape, structure, feature and the spirit described in the utility model right change and modify, and all should be included in right of the present utility model.
Claims (8)
1. a three-phase alternating current intelligent control circuit, comprise: three phases line voltage control circuits, each phases line voltage control circuit comprises: current sensor, voltage sensor and transformer, it is characterized in that, described transformer is wound with phase line coil and regulating winding, phase line coil tandem is in corresponding phase line circuit, that is: the input of phase line coil is connected with the incoming line of phase line, the output of phase line coil is connected with the outlet line of phase line, the input of described regulating winding is connected with the output of phase line coil, also go here and there between the output of regulating winding and the zero line of alternating current and be provided with filter inductance and for the control circuit of regulating and controlling coil break-make and regulating winding control circuit, described current sensor is serially connected in the incoming line of phase line coil, and described voltage sensor is attempted by the output of corresponding phase line coil.
2. three-phase alternating current intelligent control circuit as claimed in claim 1, is characterized in that: described phase line coil is 1:7 ~ 7.5 with the ratio of the number of turns of regulating winding.
3. three-phase alternating current intelligent control circuit as claimed in claim 1, is characterized in that: the by-pass switch being provided with three-phase ganged between three described phase line coils and three regulating windings.
4. as claim 1, three-phase alternating current intelligent control circuit described in 2 or 3, it is characterized in that: the concrete structure of described regulating winding control circuit comprises: insulated gate bipolar transistor, diode under diode and upper half on the upper half controlling upper half conducting, and on the lower half controlling lower half conducting diode under diode and lower half, on upper half, the positive pole of diode is connected with the respective end of filter inductance after being connected with the negative pole of diode under lower half, under upper half, the negative pole of diode is connected with the zero line of alternating current after being connected with the positive pole of diode on lower half, on upper half, the negative pole of diode is connected with the drain electrode of insulated gate bipolar transistor after being connected with the negative pole of diode on lower half, under upper half, the positive pole of diode is connected with the source electrode of insulated gate bipolar transistor after being connected with the positive pole of diode under lower half.
5. three-phase alternating current intelligent control circuit as claimed in claim 4, is characterized in that: on described upper half on the positive pole of diode and lower half diode positive pole between go back and be connected to the first rc filter circuit.
6. three-phase alternating current intelligent control circuit as claimed in claim 4, is characterized in that: go back between the drain electrode of described insulated gate bipolar transistor and source electrode and be connected to the second rc filter circuit.
7. three-phase alternating current intelligent control circuit as claimed in claim 4, is characterized in that: the two ends of described regulating winding are also connected to building-out capacitor.
8. the three-phase alternating current intelligent control circuit as described in claim 1,2 or 3, is characterized in that: described current sensor is current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520781373.7U CN204992589U (en) | 2015-10-10 | 2015-10-10 | Three -phase AC intelligent control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520781373.7U CN204992589U (en) | 2015-10-10 | 2015-10-10 | Three -phase AC intelligent control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204992589U true CN204992589U (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520781373.7U Expired - Fee Related CN204992589U (en) | 2015-10-10 | 2015-10-10 | Three -phase AC intelligent control circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN204992589U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111954913A (en) * | 2018-01-24 | 2020-11-17 | 王静然 | Inductor subassembly and audio amplifier |
-
2015
- 2015-10-10 CN CN201520781373.7U patent/CN204992589U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111954913A (en) * | 2018-01-24 | 2020-11-17 | 王静然 | Inductor subassembly and audio amplifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20161010 |
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| CF01 | Termination of patent right due to non-payment of annual fee |