CN202218164U - High-stability power supply suitable for electromagnetic compatibility test - Google Patents
High-stability power supply suitable for electromagnetic compatibility test Download PDFInfo
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- CN202218164U CN202218164U CN2011203655420U CN201120365542U CN202218164U CN 202218164 U CN202218164 U CN 202218164U CN 2011203655420 U CN2011203655420 U CN 2011203655420U CN 201120365542 U CN201120365542 U CN 201120365542U CN 202218164 U CN202218164 U CN 202218164U
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Abstract
The utility model discloses a high-stability power supply suitable for an electromagnetic compatibility test. The high-stability power supply comprises a main control module, a waveform generator, an integrated power amplification circuit and a measuring module, wherein the waveform generator is connected with the main control module and the integrated power amplification circuit, and the measuring module is used for sampling and measuring a six-phase AC (Alternating Current) standard signal output from the integrated power amplification circuit and feeds back to the main control module. According to the high-stability power supply suitable for the electromagnetic compatibility test, disclosed by the utility model, composite feedback control and sampling voltage and current power amplifiers are designed, thus output is more stable; in addition, an AC vector sampling technology is utilized, thus the accuracy of the output is higher, and the adjustable fineness of the output is better.
Description
Technical field
The utility model relates to a kind of high stable power supply that is applicable to EMC test.
Background technology
The electric instruments all according to national standard all will have certain anti-electromagnetic property, must be through EMC test.All there are the electromagnetic compatibility laboratory of oneself in relevant enterprise, testing agency; But when doing the electromagnetic compatibility experiment for electric instrument; Basically be directly to use supply line or add the power supply as instrument and meter such as voltage regulator, this supply power mode is once being that common supply line itself exists various interference signals; The 2nd, common supply line stability is not enough, and is bigger to its influence when applying interference signal; Can not accurately embody the noiseproof feature of tested device, make evaluation produce deviation it.
Summary of the invention
The utility model technical problem to be solved is: a kind of high stable power supply that is applicable to EMC test is provided.
The technical scheme that the utility model adopted is: a kind of high stable power supply that is applicable to EMC test, it comprises main control module, the waveform generator that links to each other with main control module, the integrated amplifier circuit that links to each other with waveform generator, is used for integrated amplifier six phase that circuit is exported is exchanged the measurement module that standard signal carries out sampling and measuring and feeds back to main control module.
On the basis of technique scheme, further comprise attached technical scheme:
Preferably, said main control module all links to each other with input module, output module, and measurement module has the vector sampling module.
Preferably, said integrated amplifier circuit comprise the low pass filter that receives the six phase come from waveform generator and exchange reference signal, the amplitude controller that links to each other with low pass filter, the comparator that links to each other with amplitude controller, the power amplifier front stage circuits that links to each other with the output of comparator, the power amplifier that links to each other with the power amplifier front stage circuits, by output signal that power amplifier produced, will export signal feedback to comparator the automatic gain control module, will export the sampling module that signal feedback to six phase exchanges standard signal.
Preferably, said amplitude controller is made up of 16 high accuracy number potentiometers at least.
The advantage of the utility model: adopt digital waveform synthetic; Frequency-shift keying, amplitude modulation, digital phase shift and extensive integrated amplifier; Large-screen lc shows and a series of advanced technologies such as large-scale programmable logic array and device and the precision measurement power supply that designs; The antijamming capability of power supply output simultaneously is strong, high stability, pinpoint accuracy, high automation degree, electric current, voltage and phase place is accurately regulated, the harmonic amplitude number of times is adjustable arbitrarily; Phase place between harmonic wave and first-harmonic can be carried out continuous fast moving, is that electric instrument is made the electromagnetic compatibility immunity to interference desirable power supply unit in when experiment.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is the internal structure sketch map of the utility model.
Fig. 2 is the composition sketch map of the integrated amplifier circuit of the utility model.
Embodiment
Shown in Fig. 1-2; It is a kind of specific embodiment that is applicable to the high stable power supply of EMC test of the utility model, and this high stable power supply comprises main control module 10, the waveform generator 20 that links to each other with main control module 10, the integrated amplifier circuit 30 that links to each other with waveform generator 20, is used for integrated amplifier circuit 30 six phase of exporting is exchanged the measurement module 40 that standard signal carries out sampling and measuring and feeds back to main control module 10.Wherein main control module 10 is central processing unit or DSP, and links to each other with input module 12, output module 14, and input module 12 is preferably keyboard or mouse, and output module 14 is preferably display.Measurement module 40 has the vector sampling module.
Integrated amplifier circuit 30 comprises the low pass filter 31 that receives the six phase interchange reference signal that comes from waveform generator 20; The amplitude controller 32 that links to each other with low pass filter 31; The comparator 33 that links to each other with amplitude controller 32; The power amplifier front stage circuits 34 that links to each other with the output of comparator 33; The power amplifier 35 that links to each other with power amplifier front stage circuits 34; The output signal 36 that is produced by power amplifier 35; Output signal 36 is fed back to the automatic gain control module 37 of comparator 33; Output signal 36 is fed back to the sampling module 38 that six phase exchanges standard signal.Wherein six phase interchange reference signal comprises three-phase voltage signal and three-phase current signal.Sampling module 38 is not only adopted the amplitude of signal get off, and also will its phase place adopted, and is referred to as the perfect information sampling or the vector sampling of AC signal.The output signal compares (amplitude through vector sampling back with the interior reference signal that exchanges of machine; The phase bit comparison), controls, exchange reference data in the amplitude of exporting signal like this and the equal real-time tracking machine of phase place with difference; The amplitude of having guaranteed the output signal is accurate, and phase relation is constant.Amplitude controller 32 mainly is made up of 16 high accuracy number potentiometers; The effect of power amplifier 35 makes the voltage of output; Electric current has certain carrying load ability; Additional amplitude sum of errors frequency error not thus, power amplifier 35 is the voltage and current power amplifier of compound FEEDBACK CONTROL band sampling, is approximately desirable power amplifier.
During work; Deliver to power amplifier 35 by waveform generator 20 synthetic interchange reference signals earlier through signal transmssion line; Because in the process of transmission; Exchange reference signal and can respond to the useless high frequency electrical signal of a part, thus one-level active low-pass filter 31 established in the prime of power amplifier 35, thus the medium-high frequency interference signal filtering that is higher than more than the 3KHz; Then filtered interchange reference signal is delivered to amplitude controller 32, the adjusting fineness of 32 pairs of output of amplitude controller electric weight is controlled.Delivering to the output signal 36 that comparator 33 and automatic gain control module 37 fetch through output through the ac voltage signal after the amplitude adjusted compares; And automatic gain control module 37 is mainly got amplitude proportional signal, phase signal and the part high frequency electrical signal composition of output signal 36, draws an error signal and delivers to power amplifier front stage circuits 34 and go conditioning signal to change.Power amplifier 35 main completion are boosted or up-flow and power amplification.AC signal after power amplifier 35 amplifies is connected to output output, also delivers to take a sample back and feed back to the vector sampling module of sampling module 38 simultaneously.The voltage and current power amplifier of this thus compound FEEDBACK CONTROL band sampling can carry out self-control according to output, thereby has guaranteed the highly stable of output.
The utility model makes output more stable through the voltage and current Designing power amplifier of compound FEEDBACK CONTROL band sampling, and the use of ac vector Sampling techniques makes the output accuracy higher, makes the output adjustable fineness thinner.
Certainly the foregoing description only is the technical conceive and the characteristics of explanation the utility model, and its purpose is to let the people who is familiar with this technology can understand content of the utility model and enforcement according to this, can not limit the protection range of the utility model with this.All equivalent transformation or modifications of doing according to the spirit of the utility model main technical schemes all should be encompassed within the protection range of the utility model.
Claims (4)
1. high stable power supply that is applicable to EMC test is characterized in that: it comprises main control module (10), the waveform generator (20) that links to each other with main control module (10), with the continuous integrated amplifier circuit (30) of waveform generator (20), be used for integrated amplifier circuit (30) six phase of exporting is exchanged the measurement module (40) that standard signal carries out sampling and measuring and feeds back to main control module (10).
2. high stable power supply according to claim 1 is characterized in that: said main control module (10) all links to each other with input module (12), output module (14), and measurement module (40) has the vector sampling module.
3. high stable power supply according to claim 1 and 2 is characterized in that: said integrated amplifier circuit (30) comprises the low pass filter (31) that receives the six phase come from waveform generator (20) and exchange reference signal, the amplitude controller (32) that links to each other with low pass filter (31), the comparator (33) that links to each other with amplitude controller (32), with the continuous power amplifier front stage circuits (34) of the output of comparator (33), the output signal (36) that is produced with the continuous power amplifier (35) of power amplifier front stage circuits (34), by power amplifier (35), will export automatic gain control module (37) that signal (36) feeds back to comparator (33), will export signal (36) and feed back to the sampling module (38) that six phase exchanges standard signal.
4. high stable power supply according to claim 3 is characterized in that: said amplitude controller (32) is made up of 16 high accuracy number potentiometers at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203655420U CN202218164U (en) | 2011-09-28 | 2011-09-28 | High-stability power supply suitable for electromagnetic compatibility test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203655420U CN202218164U (en) | 2011-09-28 | 2011-09-28 | High-stability power supply suitable for electromagnetic compatibility test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202218164U true CN202218164U (en) | 2012-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203655420U Expired - Lifetime CN202218164U (en) | 2011-09-28 | 2011-09-28 | High-stability power supply suitable for electromagnetic compatibility test |
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| Country | Link |
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| CN (1) | CN202218164U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023342A (en) * | 2011-09-28 | 2013-04-03 | 南京丹迪克科技开发有限公司 | High-stabilized power source suitable for electromagnetic compatibility test |
| CN105842562A (en) * | 2016-03-30 | 2016-08-10 | 东莞市广安电气检测中心有限公司 | Device for testing immunity to common-mode conducted disturbance |
-
2011
- 2011-09-28 CN CN2011203655420U patent/CN202218164U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023342A (en) * | 2011-09-28 | 2013-04-03 | 南京丹迪克科技开发有限公司 | High-stabilized power source suitable for electromagnetic compatibility test |
| CN103023342B (en) * | 2011-09-28 | 2016-02-03 | 南京丹迪克科技开发有限公司 | A kind of high stable power supply being applicable to EMC test |
| CN105842562A (en) * | 2016-03-30 | 2016-08-10 | 东莞市广安电气检测中心有限公司 | Device for testing immunity to common-mode conducted disturbance |
| CN105842562B (en) * | 2016-03-30 | 2018-12-21 | 东莞市广安电气检测中心有限公司 | A kind of device for the test of common mode conduction interference immunity to interference |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120509 |
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| CX01 | Expiry of patent term |