CN202512234U - Stable high-power power supply - Google Patents
Stable high-power power supply Download PDFInfo
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- CN202512234U CN202512234U CN2012201629479U CN201220162947U CN202512234U CN 202512234 U CN202512234 U CN 202512234U CN 2012201629479 U CN2012201629479 U CN 2012201629479U CN 201220162947 U CN201220162947 U CN 201220162947U CN 202512234 U CN202512234 U CN 202512234U
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- 238000005516 engineering process Methods 0.000 description 5
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Abstract
The utility model discloses a stable high-power power supply, which comprises a current pre-amplification module, a current power amplifier amplification module, an output transformer, a current gear shifting and control module, a feedback signal control circuit and a power amplifier power supply module. The stable high-power power supply is characterized in that a voltage current conversion circuit is arranged behind a signal source and used for converting a 5V alternating current voltage output signal into a current output signal; and the voltage current conversion circuit is added to the current pre-amplification module and used for recovering a current signal into a 5V alternating current voltage signal on the premise that phase information and indexes are not changed. The stable high-power power supply has the advantages that the voltage signal is converted into the current signal, according to the characteristics of long transmission distance and high anti-interference capacity of the current signal, each phase of 800W high-power power which is obtained by the stable high-power power supply is high in stability and ideal in distortion, and requirements on technical indexes of a 0.01-grade three-phase electric energy meter calibrating device are met.
Description
Technical field
The utility model relates to and is applied to 0.01 grade of 12 a kind of high stability large power supply on the epi-position three-phase electric energy meter calibrating installation.
Background technology
At present, the high stability power supply that is applied on 0.01 stage arrangement all is that power is less, 300W/ mutually below, institute's bringing onto load all is in the majority below 6 epi-positions, this be because power the stability of large power supply is bad more more, institute's bringing onto load is many more, the degree of distortion of power supply is big more.
Fig. 1 is that power supply is realized theory diagram, is the realization schematic diagram of a phase voltage electric current, and the realization theory diagram of other two phase voltages electric current is consistent with Fig. 1.Three-phase alternating-current supply all is according to this principle design; Most of high stability power supplys all are to adopt modular design; Wherein be divided into signal source (6 road waveforms take place and control module), waveform pre-amplifying module, power amplifier module, output feedback control module, each module production technology that rests on a scientific basis is assembled into standard PC case: promptly waveform control, the preposition amplification of waveform and voltage delivery casing and 3 electric current delivery casings (delivery casing of every phase current).The output of electric current is prone to produce stronger electromagnetic interference (EMI); At first take reasonably to walk its electromagnetic interference (EMI) intensity of Wiring technology minimizing in order to prevent that it from disturbing; Simultaneously control being taken place waveform is placed on from electric current delivery casing place far away with the voltage delivery casing; PROCESS FOR TREATMENT through suitable finally makes the output of electric current and voltage can both reach than higher output stability and less degree of distortion, and is independent of each other during output.
Current source for output 300W/ is following mutually can also be made standard PC case; Be convenient to the control of science layout and technological process; But it is very unrealistic to make standard PC case according to traditional manufacture craft again for the electric current output of 800W/ phase; Need explain a bit that at this advantage that every phase current is made a standard PC case is:
1, electric current pre-amplifying module, electric current power amplifier amplification module, output transformer, electric current gear switch and control, feedback signal control circuit, power amplifier supply module are placed in the cabinet; Can carry out the layout of science; The magnetic interference of current return is reduced to minimumly as far as possible, can the process layout of feedback signal be carried out optimization process simultaneously;
2, adopt a standard PC case to realize that the output of a phase current is convenient to modular design, be convenient to debugging and maintenance, be convenient to focusing on of each item technical indicator;
3, adopt a standard PC case to realize that the output of a phase current is from the simplification design philosophy, as long as the current output value that signal source just can be converted into actual needs for a waveform signal has realized that basically all hardware except that signal generator is realized.
But for the so big power power-supply of every phase 800W, a cabinet can not load electric current pre-amplifying module, electric current power amplifier amplification module, output transformer, electric current gear switch and control, feedback signal control circuit and power amplifier supply module.Basis signal transmission and prevent that the principle of design of electromagnetic interference effect makes a cabinet with electric current power amplifier amplification module; All the other modules still are placed in the cabinet; A problem of design back existence is that cabinet is too much like this; The waveform signal transmission range that signal source produces is long, and the layout technology of this signal is difficult for realizing, in actual mechanical process, inevitably can receive the influence of high-frequency signal in the environment, current field, AC power interference source; The stability of large power supply is difficult for realizing like this, thereby must solve the anti-interference problem of signal source.
Signal source can produce 6 road waveform signals, and this 6 road waveform signal can realize that amplitude is adjustable, frequency adjustable, and phase place is adjustable; The stability of waveform signal, degree of distortion technical indicator can be accomplished fine, and these signals all are with the output of 5V alternating voltage form, and this form output will produce above problem, poor anti jamming capability, and transmission range is short.
The utility model content
The utility model provides a kind of 0.01 grade of 12 stable large power supply on the epi-position three-phase electric energy meter calibrating installation that be applied to for solving the problems of the technologies described above, and makes electric current output can reach every phase 800W.
To achieve these goals, the utility model adopts following technical scheme.
The stable large power supply of the utility model comprises electric current pre-amplifying module, electric current power amplifier amplification module, output transformer, electric current gear switch and control, feedback signal control circuit and power amplifier supply module; After signal source, increasing a voltage current transformating circuit, is current output signal with 5V alternating voltage output conversion of signals; Increase a voltage current transformating circuit at the electric current pre-amplifying module, under the prerequisite that does not change phase information and index, it is the 5V ac voltage signal that current signal is restored.
The beneficial effect of the utility model is; Convert voltage signal into current signal; Utilized the transmission range of current signal long, the characteristics that antijamming capability is strong, the large power, electrically source stability of the every phase 800W that obtains according to the utility model is fine; Degree of distortion is very desirable, has satisfied the technical requirement of 0.01 grade of three-phase electric energy meter calibrating installation.
Description of drawings
Fig. 1 is that power supply is realized theory diagram.
Fig. 2 is that signal source increases schematic block circuit diagram.
Fig. 3 is that pre-amplifying module increases schematic block circuit diagram.
Fig. 4 is U/I translation circuit figure.
Fig. 5 is I/U translation circuit figure.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
The stable large power supply of present embodiment comprises electric current pre-amplifying module, electric current power amplifier amplification module, output transformer, electric current gear switch and control, feedback signal control circuit and power amplifier supply module; After signal source, increasing a U/I translation circuit figure, is current output signal with 5V alternating voltage output conversion of signals; Increase an I/U translation circuit figure at the electric current pre-amplifying module, under the prerequisite that does not change phase information and index, it is the 5V ac voltage signal that current signal is restored.
Though the above-mentioned accompanying drawing that combines is described the embodiment of the utility model; But be not restriction to the utility model protection domain; One of ordinary skill in the art should be understood that; On the basis of the technical scheme of the utility model, those skilled in the art need not pay various modifications that creative work can make or distortion still in the protection domain of the utility model.
Claims (1)
1. a stable large power supply comprises electric current pre-amplifying module, electric current power amplifier amplification module, output transformer, electric current gear switch and control, feedback signal control circuit and power amplifier supply module; It is characterized in that, after signal source, increase a voltage current transformating circuit, is current output signal with 5V alternating voltage output conversion of signals; Increase a voltage current transformating circuit at the electric current pre-amplifying module, under the prerequisite that does not change phase information and index, it is the 5V ac voltage signal that current signal is restored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201629479U CN202512234U (en) | 2012-04-18 | 2012-04-18 | Stable high-power power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201629479U CN202512234U (en) | 2012-04-18 | 2012-04-18 | Stable high-power power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202512234U true CN202512234U (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201629479U Expired - Fee Related CN202512234U (en) | 2012-04-18 | 2012-04-18 | Stable high-power power supply |
Country Status (1)
| Country | Link |
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| CN (1) | CN202512234U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675751A (en) * | 2013-11-28 | 2014-03-26 | 国家电网公司 | Three-phase voltage and current analog power source for site metering device |
| CN104977442A (en) * | 2015-06-18 | 2015-10-14 | 杭州长川科技股份有限公司 | Power module circuit for high-current power device test system |
-
2012
- 2012-04-18 CN CN2012201629479U patent/CN202512234U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675751A (en) * | 2013-11-28 | 2014-03-26 | 国家电网公司 | Three-phase voltage and current analog power source for site metering device |
| CN104977442A (en) * | 2015-06-18 | 2015-10-14 | 杭州长川科技股份有限公司 | Power module circuit for high-current power device test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20121031 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121031 Address after: 250002 Ji'nan City Central District, Shandong, No. 2 South Road, No. 500 Patentee after: Shandong Research Inst. of Electric Power Patentee after: State Grid Corporation of China Address before: 250002 Ji'nan City Central District, Shandong, No. 2 South Road, No. 500 Patentee before: Shandong Research Inst. of Electric Power |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20200418 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |