CN105527518A - Aluminum electrolytic capacitor life tester - Google Patents
Aluminum electrolytic capacitor life tester Download PDFInfo
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- CN105527518A CN105527518A CN201510982233.0A CN201510982233A CN105527518A CN 105527518 A CN105527518 A CN 105527518A CN 201510982233 A CN201510982233 A CN 201510982233A CN 105527518 A CN105527518 A CN 105527518A
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/539—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
- H02M7/5395—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/64—Testing of capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention provides an aluminum electrolytic capacitor life tester, and relates to the technical field of electrolytic capacitors. The tester comprises a power frequency alternating-current source, a rectifying link, an inverting link, an isolating transformer, a tested capacitor, a direct-current boost-buck link, a control panel and a direct-current and alternating-current detection link, wherein the direct-current boost-buck link is connected to the inverting link; the control panel is separately connected to the rectifying link, the direct-current boost-buck link and the direct-current and alternating-current detection link; and the direct-current and alternating-current detection link is connected to the tested capacitor. The tester can provide a direct-current power supply with adjustable voltage and current and an alternating-current power supply with adjustable voltage and current, and the two power supplies are superposed in test to simulate the working situation of the tested capacitor, so that the life of the tested capacitor is detected.
Description
Technical field
The present invention relates to electrochemical capacitor technical field, particularly refer to a kind of life-span tester of alminium electrolytic condenser.
Background technology
Alminium electrolytic condenser is a kind of very conventional electronic devices and components, alminium electrolytic condenser has certain mission life, and the time is longer, in electric capacity R&D process, a very important parameter determines the life-span of new varieties, in order to check the life-span of fresh sample, needs a set of special equipment to test, for the electric capacity in experimentation provides power supply, the course of work of artificial capacitor.Not for electric capacity experiment provides the power supply of energy in prior art.Based on this, the invention provides a kind of tester solved the problem.
Summary of the invention
For the deficiencies in the prior art, the present invention proposes a kind of alminium electrolytic condenser life-span tester, the direct supply that the present invention can provide a kind of voltage and current to regulate and the AC power that a kind of voltage and current can regulate, above-mentioned two kinds of power supplys superpose situation when working in order to simulation test electric capacity mutually when testing, thus detect the life-span of testing capacitor.
To achieve these goals, the technical scheme taked of the present invention is as follows:
The present invention proposes a kind of alminium electrolytic condenser life-span tester, comprise connect successively industrial frequency AC source, rectification link, inversion link, isolating transformer and testing capacitor, also comprise direct current buck link, control panel and DC-AC detection, described direct current buck link is connected to inversion link, described control panel is connected to rectification link, direct current buck link and DC-AC detection, and described DC-AC detection is connected to testing capacitor.
Further, described inversion link and direct current buck link share the IPM module of Unit six, and described TPM module contains six IGBT unit and forms three brachium pontis, and wherein two brachium pontis realize reversals, and another brachium pontis realizes boosting and the step-down of direct current.
Further, described control panel adopts industrial digital signal processor.
Further, described DC-AC detection comprises direct current detection link, DC voltage detection, alternating current detection and alternating voltage detection.
Further, described direct current detection link adopts Hall current sensor, DC voltage detection adopts electric resistance partial pressure, and alternating current detection adopts current transformer as sensor, and alternating voltage detection adopts voltage transformer (VT) as sensor.
Beneficial effect of the present invention:
1. the present invention is by applying AC power and direct supply at testing capacitor two ends, simulates the work of capacitor, achieves the object of sensing capacitor mission life, for the design of capacitor and assessment provide foundation;
2. life-span tester of the present invention adopts DSP CONTROL, and reliable and stable, precision is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of alminium electrolytic condenser life-span tester of the present invention;
Fig. 2 is the schematic diagram of the control panel of a kind of alminium electrolytic condenser life-span tester of the present invention;
Fig. 3 is the circuit diagram of the rectification link of a kind of alminium electrolytic condenser life-span tester of the present invention;
Fig. 4 is the circuit diagram of the inversion link of a kind of alminium electrolytic condenser life-span tester of the present invention;
Fig. 5 is the circuit diagram of the direct current buck link of a kind of alminium electrolytic condenser life-span tester of the present invention;
Fig. 6 is the direct supply detection circuit diagram of a kind of alminium electrolytic condenser life-span tester of the present invention;
Fig. 7 is the DC voltage detection circuit diagram of a kind of alminium electrolytic condenser life-span tester of the present invention;
Fig. 8 is the alternating current detection circuit diagram of a kind of alminium electrolytic condenser life-span tester of the present invention;
Fig. 9 is the alternating voltage detection circuit diagram of a kind of alminium electrolytic condenser life-span tester of the present invention;
Figure 10 is testing capacitor catenation principle figure.
Wherein, 1-industrial frequency AC source, 2-rectification link, 3-inversion link, 4-isolating transformer, 5-testing capacitor, 6-direct current buck link, 7-control panel, 8-DC-AC detection.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the present invention proposes a kind of alminium electrolytic condenser life-span tester, comprise connect successively industrial frequency AC source 1, rectification link 2, inversion link 3, isolating transformer 4 and testing capacitor 5, also comprise direct current buck link 6, control panel 7 and DC-AC detection 8, described direct current buck link 6 is connected to inversion link 3, described control panel 7 is connected to rectification link 2, direct current buck link 6 and DC-AC detection 8, and described DC-AC detection 8 is connected to testing capacitor 5.
Rectification link 2 is from industrial frequency AC source, power alternating current out becomes galvanic current, life-span tester of the present invention with control panel 7 for control core, control panel controls inversion link 3 on the one hand, direct current through overcommutation is become the alternating current that frequency is setting value, alternating current carries out isolated buck by isolating transformer 4, and on the other hand control panel 7 controls direct current buck link 6 simultaneously and realizes boosting to DC voltage and step-down.AC power after controlling and direct supply superpose after-applied to testing capacitor 5 two ends, thus the work of analog capacitor, reach the object of life test.In this life-span tester course of work, detected by the voltage and current of DC-AC detection to capacitance terminal, realize closed-loop control.
Wherein, above-mentioned control panel 7 adopts industrial digital signal processor to control, this chip operation speed is high, can completion timing, interrupts, analog to digital conversion, PWM waveform generation, the function of correspondence with foreign country etc., and IO pin has stronger driving force, temperature resistant capability and antijamming capability by force, are well suited for the control of industrial power supply.As shown in Figure 2, in the present embodiment, select and adopt digital signal processor DSP IC30F2023 chip to control, this control chip is powerful, fast operation, signal sampling at a high speed can be carried out, the six high-resolution PWM waveforms in tunnel are provided, the demand simultaneously controlling inversion link and direct current buck can be reached.
As shown in Figure 3, rectification link 2 is converted to direct current industrial-frequency alternating current, and the bridge that switching process is made up of diode has been piled, simple and reliable, carries out filtering after rectification completes by big capacity electrolyte capacitor, obtains galvanic current.
As shown in Figure 4, inversion link 3 changes changeable frequency into galvanic current, the alternating current that voltage is adjustable, SPWM mode is adopted to realize, this method needs four IGBT to form two brachium pontis, under the effect of pwm pulse, produces the square wave of pulsewidth transformation, after carrying out filtering process by inductance and electric capacity formation LC filtering circuit, movable level and smooth alternating current.
As shown in Figure 5, direct current buck link 6 changes the adjustable direct current of voltage into galvanic current, the design adopts the mode of switch pressure regulation to realize, this method needs two IGBT to form a brachium pontis, under the effect of pwm pulse, produce the square wave of pulsewidth transformation, by the isolation of transformer T1 and the voltage-multiplying circuit of electric capacity and diode formation, movable galvanic current.
In the present embodiment, inversion link 3 and direct current buck link 6 share the IPM module PM150CLA120 of Unit six, and this module contains six IGBT unit, forms three brachium pontis, carries multi-protective function, can provide the reliability of operation.Two in three brachium pontis realize direct current to the inversion exchanged.Implementation as shown in Figure 4.In figure, one group of complementary SPWM pulse is applied to G1, and on G2, other one group of complementary SPWM pulse is applied to G3, and on G4, the intermediate point S1 of brachium pontis, S3 become level and smooth alternating current after inductance L 2, L3 and electric capacity C14 filtering.Another one brachium pontis realizes the conversion to DC boosting and step-down by half-bridge circuit.Translation circuit as shown in Figure 5, employ the 3rd brachium pontis of IPM module in figure, the 3rd group of push-pull drive pulse is applied to G5, on G6, the centre of intermediate point S5 and two derided capacitors of brachium pontis is applied to the elementary of high-frequency transformer respectively, secondary through voltage-multiplying circuit boosting after obtain DC voltage.
In addition; need the isolation realizing digital signal processor drive singal and IPM in the design, adopt high speed photo coupling A4504 to realize in design, IPM also needs feedback protection signal to digital signal processor simultaneously; feedback signal optocoupler TLP521 completes, and circuit as shown in Figure 4.
DC-AC detection 8 of the present invention to complete the detection to the direct supply and AC power being applied to testing capacitor two ends.The present invention needs to detect the voltage and current of direct supply and the voltage and current of AC power.As shown in Figure 6, direct current detection link adopts Hall current sensor to realize, and Hall current sensor can realize the isolation of sensed current and detection signal, and varies with temperature little, detects stable feature.Hall current sensor in the design adopts single power supply, needs to adopt amplifier to carry out migration processing to output signal; As shown in Figure 7, because DC voltage change scope is large, accuracy of detection requires higher, so DC voltage detection adopts the mode of electric resistance partial pressure to realize, electric resistance partial pressure precision is high, and reaction is fast, affects less by element oneself factor.
As shown in Figure 8, alternating current detection adopts current transformer as sensor, and what AC current sensor exported is current signal, becomes voltage signal by sampling resistor, in order to by digital signal processor identification and reception, can be biased by the 1.65V reference voltage of standard; Alternating voltage detection adopts voltage transformer (VT) as sensor, and what AC voltage sensor exported is ac voltage signal, and in order to can by single-chip microcomputer identification and reception, be biased by the 1.65V reference voltage of standard, circuit as shown in Figure 9.
Testing capacitor 5 mainly realizes the superposition of AC power and direct supply and the connection with capacitor, catenation principle as shown in Figure 10, in figure, AC power connects the elementary of isolating transformer, the secondary of isolating transformer is tapped two winding coils of band, the intermediate point of two winding coils is connected, the positive output of direct supply meets the centre tap place of transformer secondary output, other one end of two windings is connected respectively at the positive pole of two groups of electrochemical capacitors, and the negative pole of two groups of electrochemical capacitors receives the negative pole of DC voltage.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection domain of claim.
Claims (5)
1. an alminium electrolytic condenser life-span tester, it is characterized in that, comprise the industrial frequency AC source (1) connected successively, rectification link (2), inversion link (3), isolating transformer (4) and testing capacitor (5), also comprise direct current buck link (6), control panel (7) and DC-AC detection (8), described direct current buck link (6) is connected to inversion link (3), described control panel (7) is connected to rectification link (2), direct current buck link (6) and DC-AC detection (8), described DC-AC detection (8) is connected to testing capacitor (5).
2. a kind of alminium electrolytic condenser life-span tester according to claim 1, it is characterized in that, described inversion link (3) and direct current buck link (6) share the IPM module of Unit six, described TPM module contains six IGBT unit and forms three brachium pontis, wherein two brachium pontis realize reversals, and another brachium pontis realizes boosting and the step-down of direct current.
3. a kind of alminium electrolytic condenser life-span tester according to claim 1, is characterized in that, described control panel (7) adopts industrial digital signal processor.
4. a kind of alminium electrolytic condenser life-span tester according to claim 1, is characterized in that, described DC-AC detection (8) comprises direct current detection link, DC voltage detection, alternating current detection and alternating voltage detection.
5. a kind of alminium electrolytic condenser life-span tester according to claim 3, it is characterized in that, described direct current detection link adopts Hall current sensor, DC voltage detection adopts electric resistance partial pressure, alternating current detection adopts current transformer as sensor, and alternating voltage detection adopts voltage transformer (VT) as sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510982233.0A CN105527518A (en) | 2016-03-09 | 2016-03-09 | Aluminum electrolytic capacitor life tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510982233.0A CN105527518A (en) | 2016-03-09 | 2016-03-09 | Aluminum electrolytic capacitor life tester |
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| CN105527518A true CN105527518A (en) | 2016-04-27 |
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| CN201510982233.0A Pending CN105527518A (en) | 2016-03-09 | 2016-03-09 | Aluminum electrolytic capacitor life tester |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950439A (en) * | 2016-10-31 | 2017-07-14 | 丰宾电子（深圳）有限公司 | A kind of Reliability Test Instrument of alminium electrolytic condenser |
| CN108663580A (en) * | 2017-07-10 | 2018-10-16 | 山东光因照明科技有限公司 | Electrochemical capacitor life tester |
| CN113358955A (en) * | 2021-06-02 | 2021-09-07 | 格力电器（合肥）有限公司 | Method for detecting reliability of electrolytic capacitor |
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| JP2014171297A (en) * | 2013-03-01 | 2014-09-18 | Mitsubishi Electric Corp | Power conditioner |
| CN204256069U (en) * | 2014-11-26 | 2015-04-08 | 西安开天电力电子技术有限公司 | The aging impulse test circuit unit of a kind of efficient capacitive |
| CN104820119A (en) * | 2015-04-30 | 2015-08-05 | 许继集团有限公司 | AC-DC hybrid high current generator |
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2016
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| CN101842711A (en) * | 2007-08-29 | 2010-09-22 | 保诚电子工程有限公司 | Aging status diagnostic apparatus for power conversion system, and its method |
| CN201134761Y (en) * | 2007-11-15 | 2008-10-15 | 华南理工大学 | Modular high-power high-frequency IGBT inversion electric plating power source |
| CN102133676A (en) * | 2011-01-25 | 2011-07-27 | 深圳华意隆电气股份有限公司 | Voltage-type PWM (pulse-width modulation) half-bridge hard switching inversion-type welding and cutting machine |
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| JP2014171297A (en) * | 2013-03-01 | 2014-09-18 | Mitsubishi Electric Corp | Power conditioner |
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| CN204256069U (en) * | 2014-11-26 | 2015-04-08 | 西安开天电力电子技术有限公司 | The aging impulse test circuit unit of a kind of efficient capacitive |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106950439A (en) * | 2016-10-31 | 2017-07-14 | 丰宾电子（深圳）有限公司 | A kind of Reliability Test Instrument of alminium electrolytic condenser |
| CN108663580A (en) * | 2017-07-10 | 2018-10-16 | 山东光因照明科技有限公司 | Electrochemical capacitor life tester |
| CN113358955A (en) * | 2021-06-02 | 2021-09-07 | 格力电器（合肥）有限公司 | Method for detecting reliability of electrolytic capacitor |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Wanhong Inventor after: Lin Jincun Inventor after: Yan Wei Inventor before: Lin Jincun |
|
| COR | Change of bibliographic data | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160427 |
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| RJ01 | Rejection of invention patent application after publication |