CN204030967U - A kind of numerical control contactless pressurizer compensating circuit - Google Patents
A kind of numerical control contactless pressurizer compensating circuit Download PDFInfo
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- CN204030967U CN204030967U CN201420424434.XU CN201420424434U CN204030967U CN 204030967 U CN204030967 U CN 204030967U CN 201420424434 U CN201420424434 U CN 201420424434U CN 204030967 U CN204030967 U CN 204030967U
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Abstract
The utility model relates to a kind of numerical control contactless pressurizer compensating circuit.Include compensator transformer T2, regulating circuit, directional control circuit, surge absorbing circuit and provide different electric pressure to be realized the voltage of voltage swing and direction-agile by directional control circuit for the current sampling circuit regulating circuit of sample rate current, through compensator transformer T2, output voltage stabilization is realized out to its superposition, with the speed of nanosecond reverse surge voltage absorbed in the process that surge absorbing circuit changes in voltage swing or direction and effectively protect thyristor, current sampling circuit detects the electric current in compensation circuit, resistance particularly in parallel can detect small current signal, effectively guarantee that the zero passage of thyristor switches, the tap achieving voltage regulator is few, the precision of voltage regulation is high, the response time is fast, volume is little, contactless, without harmonic wave, without advantages such as surge impacts.
Description
Technical field
The utility model relates to a kind of numerical control contactless pressurizer compensating circuit.
Background technology
At present coil type pressurizer collocation structure on the market or circuit are probably divided into three kinds: 1, be made up of drive motors, automatic control circuit and carbon brush; The failure rate of this type of pressurizer is higher; 2, be made up of compensator transformer, many tap changer and contactor; This type of pressurizer to be powered to compensator transformer by the respective taps of the many tap changer of contactor matrix majorization and is realized the function of voltage stabilizing; Many taps multi-regulator that this type of pressurizer adopts, there is the problem that the precision of voltage regulation is low, and volume is larger; What 3, adopt is that contactor controls; This type of compensating circuit response time is excessively slow, for high-accuracy equipment, can not meet requirement; 4, be made up of many compensator transformers and controllable silicon; This type of pressurizer adopt controllable silicon therefore its response time fast, but multiple compensator transformer has directly had influence on precision and the capacity issue of pressurizer itself; Resistance ZR is not had and with thyristor and the contactor connected connects is the effect that this moment starting up of normally opened contact cannot complete surge absoption in the surge absorbing circuit of 5, existing electronic voltage regulator compensating circuit, cause thyristor to have situation about misleading at booting moment, thus burn out power electronic device; There is no short-circuit protection in the regulating circuit of existing electronic voltage regulator compensating circuit, thus be easy to cause burning out power electronic device and heavy security incident; The current detecting end of existing electronic voltage regulator compensating circuit does not have current sense resistor, and in Weak current situation, diode cannot conducting, and control board cannot detect current signal and not do respective handling, thus there is a dead band situation.Therefore need badly and a kind ofly effectively can solve above-mentioned dissimilar pressurizer compensating circuit.
Utility model content
The purpose of this utility model is to overcome above-described shortcoming, provides that a kind of volume is controlled, precision is high, response is fast, fail safe is high, without harmonic wave, without surge, shock-free a kind of numerical control contactless pressurizer compensating circuit.
For achieving the above object, concrete scheme of the present utility model is as follows: numerical control contactless pressurizer compensating circuit, is characterized in that: include compensator transformer T2, regulating circuit, directional control circuit, surge absorbing circuit and the current sampling circuit for sample rate current;
Described surge absorbing circuit comprises thyristor TR1, the normally opened contact of contactor KM1, contactor KM3 normally-closed contact, resistance Ra1, resistance ZR; One end of one end of described thyristor TR1, the normally opened contact of contactor KM1, one end of contactor KM3 normally-closed contact, one end of resistance ZR are connected with secondary one end of compensator transformer T2, the other end of described thyristor TR1, the other end of contactor KM3 normally-closed contact, the other end of resistance ZR connect and are connected with one end of resistance Ra1, and the other end of resistance Ra1 is connected with the secondary other end of compensator transformer T2; The other end of the normally opened contact of contactor KM1 is connected with the secondary other end of compensator transformer T2.
Wherein, described regulating circuit includes the voltage regulator T1, thyristor TR6, thyristor TR7, thyristor TR8, thyristor TR9, thyristor TR10, thyristor TR11, thyristor TR12, thyristor TR13, fuse F1, fuse F2, fuse F3, fuse F4, fuse F5, fuse F6, fuse F7, the fuse F8 that adopt two-part winding;
The first paragraph of described voltage regulator T1 is provided with five taps, first tap of its first paragraph connects one end of thyristor TR13 by fuse F1,3rd tap of its first paragraph connects one end of thyristor TR12 by fuse F2,4th tap of its first paragraph connects one end of thyristor TR11 by fuse F3, the 5th tap of its first paragraph connects one end of thyristor TR10 by fuse F4;
The second segment of described voltage regulator T1 is provided with four taps, first tap of its second segment connects one end of thyristor TR6 by fuse F8, second tap of its second segment connects one end of thyristor TR7 by fuse F7,3rd tap of its second segment connects one end of thyristor TR8 by fuse F6, the 4th tap of its second segment connects one end of thyristor TR9 by fuse F5;
5th tap of the first paragraph of described voltage regulator T1 and an input of directional control circuit are connected to zero line; Second tap of the first paragraph of described voltage regulator T1 is connected with the output of compensator transformer T2; Two outputs of described directional control circuit are connected with the secondary winding of compensator transformer T2 respectively; 4th tap of the second segment of the input termination voltage regulator T1 of described current sampling circuit.
Wherein, described directional control circuit includes thyristor TR2 ~ thyristor TR5; One end of described thyristor TR2 and one end of thyristor TR3 connect to form first input end; The other end of thyristor TR3 and one end of thyristor TR4 connect to form the first output; The other end of thyristor TR4 and one end of thyristor TR5 connect to form the second input; The other end of thyristor TR5 and the other end of thyristor TR2 connect to form the second output.
Wherein, described current sampling circuit includes diode group D1, resistance Ra2; Described diode group D1 is the diode composition of two reverse parallel connections; Described diode group D1 is in parallel with resistance Ra2.
Wherein, the normally opened contact of contactor KM2 is also connected with between second tap of the first paragraph of described voltage regulator T1 and the output of compensator transformer T2.
the beneficial effects of the utility model are:regulating circuit provides different electric pressures to be realized the voltage of voltage swing and direction-agile by directional control circuit, through compensator transformer T2, output voltage stabilization is realized out to its superposition, with the speed of nanosecond reverse surge voltage absorbed in the process that surge absorbing circuit changes in voltage swing or direction and effectively protect thyristor, current sampling circuit detects the electric current in compensation circuit, resistance particularly in parallel can detect small current signal, effectively guarantees that the zero passage of thyristor switches; The tap achieving voltage regulator is few, the precision of voltage regulation is high, the response time is fast, volume is little, contactless, without harmonic wave, without advantages such as surge impacts.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model;
Description of reference numerals in Fig. 1: 1-surge absorbing circuit; 2-directional control circuit; 3-regulating circuit; 4-current sampling circuit.
Embodiment
Being described in further detail the utility model below in conjunction with the drawings and specific embodiments, is not that practical range of the present utility model is confined to this.
As shown in Figure 1, a kind of numerical control contactless pressurizer compensating circuit described in the present embodiment, includes compensator transformer T2, regulating circuit 3, directional control circuit 2, surge absorbing circuit 1 and the current sampling circuit 4 for sample rate current; Described regulating circuit 3 includes the voltage regulator T1, thyristor TR6, thyristor TR7, thyristor TR8, thyristor TR9, thyristor TR10, thyristor TR11, thyristor TR12, thyristor TR13, fuse F1, fuse F2, fuse F3, fuse F4, fuse F5, fuse F6, fuse F7, the fuse F8 that adopt two-part winding; The first paragraph of described voltage regulator T1 is provided with five taps, first tap of its first paragraph connects one end of thyristor TR13 by fuse F1,3rd tap of its first paragraph connects one end of thyristor TR12 by fuse F2,4th tap of its first paragraph connects one end of thyristor TR11 by fuse F3, the 5th tap of its first paragraph connects one end of thyristor TR10 by fuse F4; The second segment of described voltage regulator T1 is provided with four taps, first tap of its second segment connects one end of thyristor TR6 by fuse F8, second tap of its second segment connects one end of thyristor TR7 by fuse F7,3rd tap of its second segment connects one end of thyristor TR8 by fuse F6, the 4th tap of its second segment connects one end of thyristor TR9 by fuse F5; 5th tap of the first paragraph of described voltage regulator T1 and an input of directional control circuit 2 are connected to zero line; Second tap of the first paragraph of described voltage regulator T1 is connected with the output of compensator transformer T2; Two outputs of described directional control circuit 2 are connected with the secondary winding of compensator transformer T2 respectively; 4th tap of the second segment of the input termination voltage regulator T1 of described current sampling circuit 4.Wherein, described surge absorbing circuit 1 comprises thyristor TR1, the normally opened contact of contactor KM1, contactor KM3 normally-closed contact, resistance Ra1, resistance ZR; One end of one end of described thyristor TR1, the normally opened contact of contactor KM1, one end of contactor KM3 normally-closed contact, one end of resistance ZR are connected with secondary one end of compensator transformer T2, the other end of described thyristor TR1, the other end of contactor KM3 normally-closed contact, the other end of resistance ZR connect and are connected with one end of resistance Ra1, and the other end of resistance Ra1 is connected with the secondary other end of compensator transformer T2; The other end of the normally opened contact of contactor KM1 is connected with the secondary other end of compensator transformer T2.Wherein, described directional control circuit 2 includes thyristor TR2 ~ thyristor TR5; One end of described thyristor TR2 and one end of thyristor TR3 connect to form first input end; The other end of thyristor TR3 and one end of thyristor TR4 connect to form the first output; The other end of thyristor TR4 and one end of thyristor TR5 connect to form the second input; The other end of thyristor TR5 and the other end of thyristor TR2 connect to form the second output.Wherein, described current sampling circuit 4 includes diode group D1, resistance R2; Described diode group D1 is the diode composition of two reverse parallel connections; Described diode group D1 is in parallel with resistance R2, realizes detecting Weak current.Wherein, contactor KM2 normally opened contact is also connected with between second tap of the first paragraph of described voltage regulator T1 and the output of compensator transformer T2.
A kind of numerical control contactless pressurizer compensating circuit described in the present embodiment, after input in FIG adds certain voltage U 1, through compensator transformer T2, contactor KM2 adhesive, output in FIG also can produce certain voltage U 1, the voltage that the control signal that regulating circuit 3 sends according to control board regulates thyristor TR6 ~ thyristor TR13 to export a certain size is to directional control circuit 2, directional control circuit 2 regulates thyristor TR2 ~ thyristor TR5 to export the voltage in a certain size and direction to compensator transformer T2 according to exporting control signal, the object of output voltage stabilization is realized out through the superposition of compensator transformer T2.
Forms loop at secondary and resistance Ra1, the resistance ZR of starting up moment compensator transformer T2, the normally-closed contact of contactor KM3, thyristor Tr1, absorb the high pressure of booting moment generation, particularly resistance ZR can absorb with the speed of nanosecond; The normally-closed contact of resistance ZR, contactor KM3, the normally-closed contact of thyristor Tr1 parallel contactor KM3 achieve soft disconnection, and no-spark produces.
In normal voltage stabilizing process, the normally-closed contact of thyristor Tr1 and contactor KM3 disconnects, thyristor TR2 ~ thyristor TR13 conducting, and now resistance ZR and resistance Ra1 and compensator transformer T2 forms loop and plays surge absorption; When switched voltage size or direction, thyristor TR2 ~ thyristor TR13 disconnects, and thyristor Tr1 conducting and compensator transformer T2 form loop and play surge absorption.
The above is only a preferred embodiment of the present utility model, therefore all equivalences done according to structure, feature and the principle described in the utility model patent claim change or modify, and are included in the protection range of the utility model patent application.
Claims (5)
1. a numerical control contactless pressurizer compensating circuit, is characterized in that: include compensator transformer T2, regulating circuit (3), directional control circuit (2), surge absorbing circuit (1) and the current sampling circuit (4) for sample rate current;
Described surge absorbing circuit (1) comprises thyristor TR1, the normally opened contact of contactor KM1, contactor KM3 normally-closed contact, resistance Ra1, resistance ZR; One end of one end of described thyristor TR1, the normally opened contact of contactor KM1, one end of contactor KM3 normally-closed contact, one end of resistance ZR are connected with secondary one end of compensator transformer T2, the other end of described thyristor TR1, the other end of contactor KM3 normally-closed contact, the other end of resistance ZR connect and are connected with one end of resistance Ra1, and the other end of resistance Ra1 is connected with the secondary other end of compensator transformer T2; The other end of the normally opened contact of contactor KM1 is connected with the secondary other end of compensator transformer T2.
2. a kind of numerical control contactless pressurizer compensating circuit according to claim 1, is characterized in that: described regulating circuit (3) includes the voltage regulator T1, thyristor TR6, thyristor TR7, thyristor TR8, thyristor TR9, thyristor TR10, thyristor TR11, thyristor TR12, thyristor TR13, fuse F1, fuse F2, fuse F3, fuse F4, fuse F5, fuse F6, fuse F7, the fuse F8 that adopt two-part winding;
The first paragraph of described voltage regulator T1 is provided with five taps, first tap of its first paragraph connects one end of thyristor TR13 by fuse F1,3rd tap of its first paragraph connects one end of thyristor TR12 by fuse F2,4th tap of its first paragraph connects one end of thyristor TR11 by fuse F3, the 5th tap of its first paragraph connects one end of thyristor TR10 by fuse F4;
The second segment of described voltage regulator T1 is provided with four taps, first tap of its second segment connects one end of thyristor TR6 by fuse F8, second tap of its second segment connects one end of thyristor TR7 by fuse F7,3rd tap of its second segment connects one end of thyristor TR8 by fuse F6, the 4th tap of its second segment connects one end of thyristor TR9 by fuse F5;
5th tap of the first paragraph of described voltage regulator T1 and an input of directional control circuit (2) are connected to zero line; Second tap of the first paragraph of described voltage regulator T1 is connected with the output of compensator transformer T2; Two outputs of described directional control circuit (2) are connected with the secondary winding of compensator transformer T2 respectively; 4th tap of the second segment of the input termination voltage regulator T1 of described current sampling circuit (4).
3. a kind of numerical control contactless pressurizer compensating circuit according to claim 1, is characterized in that: described directional control circuit (2) includes thyristor TR2 ~ thyristor TR5; One end of described thyristor TR2 and one end of thyristor TR3 connect to form first input end; The other end of thyristor TR3 and one end of thyristor TR4 connect to form the first output; The other end of thyristor TR4 and one end of thyristor TR5 connect to form the second input; The other end of thyristor TR5 and the other end of thyristor TR2 connect to form the second output.
4. a kind of numerical control contactless pressurizer compensating circuit according to claim 1, is characterized in that: described current sampling circuit (4) includes diode group D1, resistance Ra2; Described diode group D1 is the diode composition of two reverse parallel connections; Described diode group D1 is in parallel with resistance Ra2.
5. a kind of numerical control contactless pressurizer compensating circuit according to claim 2, is characterized in that: the normally opened contact being also connected with contactor KM2 between second tap of the first paragraph of described voltage regulator T1 and the output of compensator transformer T2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420424434.XU CN204030967U (en) | 2014-07-30 | 2014-07-30 | A kind of numerical control contactless pressurizer compensating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420424434.XU CN204030967U (en) | 2014-07-30 | 2014-07-30 | A kind of numerical control contactless pressurizer compensating circuit |
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| CN204030967U true CN204030967U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420424434.XU Expired - Fee Related CN204030967U (en) | 2014-07-30 | 2014-07-30 | A kind of numerical control contactless pressurizer compensating circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3316070A1 (en) * | 2016-10-27 | 2018-05-02 | ABB Schweiz AG | Power electronic tap changer module for transformer |
-
2014
- 2014-07-30 CN CN201420424434.XU patent/CN204030967U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3316070A1 (en) * | 2016-10-27 | 2018-05-02 | ABB Schweiz AG | Power electronic tap changer module for transformer |
| WO2018077460A1 (en) * | 2016-10-27 | 2018-05-03 | Abb Schweiz Ag | Power electronic tap changer module for transformer |
| US10861642B2 (en) | 2016-10-27 | 2020-12-08 | Abb Schweiz Ag | Power electronic tap changer module for transformer |
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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: 20141217 Termination date: 20160730 |
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| CF01 | Termination of patent right due to non-payment of annual fee |