CN202903906U - Capacitor aging test circuit - Google Patents
Capacitor aging test circuit Download PDFInfo
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- CN202903906U CN202903906U CN 201220452585 CN201220452585U CN202903906U CN 202903906 U CN202903906 U CN 202903906U CN 201220452585 CN201220452585 CN 201220452585 CN 201220452585 U CN201220452585 U CN 201220452585U CN 202903906 U CN202903906 U CN 202903906U
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Abstract
The utility model discloses a capacitor aging test circuit, which is mainly composed of a pressure regulator, voltage sensors, contactors, a three-phase full-bridge rectifying unit, insulated gate bipolar transistor units, a single-phase H-bridge rectifying unit and a boosting transformer. A resonance power supply and a high-voltage power supply are serially connected to supply power to an LC resonance module. A large-voltage large-current aging condition is then provided. A control center controls the IGBT electronic switch frequency through a frequency modulation module and further changes the concussion frequency according to aging capacitance capacities so as to make a system suitable for aging of capacitors with various capacities. Ripple-resistant voltage performance parameters and ripple current performance parameters of a capacitor to be tested are tested and verified through pulsated ripple voltages and ripple currents generated according to the resonance principle. The ripple-resistant voltage parameter and the ripple current parameter of the capacitor can be further tested.
Description
Technical field
The utility model relates to the burn-in test of electronic product, especially a kind of burn in test circuit of capacitor and ageing system.
Background technology
Electronic product such as power supply etc. need to carry out the aging of certain hour usually before dispatching from the factory, in the hope of stable performance when using in the future, reject the initial failure product, are important means of quality control.Therefore, the manufacturer of electronic devices and components, big city carries out burin-in process to the product before dispatching from the factory.Can demarcate the size of the anti-ripple voltage value of this electric capacity in the product description of capacitor, the size of anti-ripple current value, this is normally theoretical to calculate, and is necessary to carry out the correctness that actual experiment proves the parameter of dispatching from the factory.
The aging equipment of capacitor is divided into the aging power supply of direct current and exchanges aging two kinds of technology of power supply.Chinese patent literature discloses a kind of aluminum electrolytic capacitor ageing circuit (patent No.: 200920210433.4) of using direct supply, this device will be after the capacitances in series forms an aging unit, and several aging unit access direct supply that is connected in parallel wears out.The technical scheme of this patent is only applicable to the alminium electrolytic condenser of aging low rated voltage.
Chinese patent literature also has the withstand voltage and aging test power supply (patent No.: 87205209) of a kind of large capacity AC capacitor, the inductance value that this device is adjusted reactor by machinery makes the loop of reactor and tested capacitor produce parallel resonance, and tested capacitor is worn out.The technical scheme of this patent needs the mechanical adjustment reactor to make circuit working at tuning-points, and regulating error is large, adjustment process is complicated, and production efficiency is low.The inductance value adjustable extent of reactor is subject to the moving-coil number of turn restriction of reactor, and this utility model is only applicable to 75 μ F, 90 μ F, 130 μ F, 280 μ F, the AC capacitor of voltage 0～750V aging.
The utility model content
The deficiency that exists in order to overcome prior art, the purpose of this utility model is to provide a kind of electric capacity aging testing system and circuit that consumes the electric energy minimum, make electric capacity work in the aging duty of large voltage and large electric current, realize simultaneously the adjustment to electric capacity ripple voltage in the work, by the frequency modulation control ageing system appearance value of testing capacitor is not had concrete restriction, can realize the electric capacity of complete series appearance value is carried out burn-in test.
In order to realize above purpose, the utility model provides a kind of capacitor aging test circuit, air switch (1) access three-phase alternating-current supply, pressure regulator (2) is connected with (1) of air switch, voltage sensor (3) and voltage sensor (4) are in parallel with the output terminal of pressure regulator (2) respectively, contactor (7) is connected with pressure regulator (2), contactor (5) is with in parallel with contactor (7) again after charging resistor (6) is connected, three phase full bridge rectification unit (8) is connected with pressure regulator (2), current sensor (9) is connected with three phase full bridge rectification unit (8), voltage sensor (10), discharge resistance (11) and Support Capacitor (12) are in parallel with the output terminal of current sensor (9) and three phase full bridge rectification unit respectively, contactor (13) is with in parallel with the output terminal of current sensor (9) and three phase full bridge rectification unit (8) again after discharge resistance (14) is connected, insulated gate bipolar transistor unit (15) is with in parallel with the output terminal of current sensor (9) and three phase full bridge rectification unit (8) again after connect insulated gate bipolar transistor unit (16), and voltage sensor (17) is held in parallel with the C end of insulated gate bipolar transistor unit (16) with E;
Air switch (19) access two-phase alternating current source, pressure regulator (20) is connected with air switch, voltage sensor (21) is in parallel with pressure regulator (20), contactor (24) is connected with pressure regulator (20), contactor (22) is with in parallel with contactor (24) again after charging resistor (23) is connected, step-up transformer (25) is connected with pressure regulator (20), single-phase H bridge rectification unit (26) is connected with step-up transformer (25), current sensor (27) is connected with single-phase H bridge rectification unit (26), voltage sensor (28), discharge resistance (29) and Support Capacitor (30) are in parallel with the output terminal of current sensor (27) and single-phase H bridge rectification unit (26) respectively;
Contactor (31) is with in parallel with voltage sensor (33) and measured capacitance (35) respectively again after discharge resistance (32) is connected;
The E end of insulated gate bipolar transistor unit (16) is connected with Support Capacitor (30);
Current sensor (18) is in parallel with voltage sensor (17), and inductance (34) is connected with current sensor (18).
The utility model also provides a kind of capacitor aging system, is comprised of human-computer interface module, control center, electric current and voltage detection module, resonant power charging rectifier discharge module, high-voltage power supply charging rectifier discharge module, frequency modulation module and LC concussion module;
Wherein, described electric current and voltage detection module is comprised of voltage sensor (3,4,10,17,21,28 and 33) and current sensor (9,18 and 27);
Described resonant power charging rectifier discharge module is comprised of air switch (1), pressure regulator (2), contactor (5 and 7), charging resistor (6), three phase full bridge rectification unit (8), Support Capacitor (12), contactor (13), discharge resistance (14);
Described high-voltage power supply charging rectifier discharge module is comprised of air switch (19), pressure regulator (20), contactor (22 and 24), charging resistor (23), step-up transformer (25), single-phase H bridge rectification unit (26), Support Capacitor (30), contactor (31), discharge resistance (32);
Described frequency modulation module is comprised of insulated gate bipolar transistor IGBT unit (15 and 16);
Described LC concussion module is comprised of inductance (34), measured capacitance (35).
Compared with prior art, the utility model provides the ageing environment of large voltage, large electric current because the power supply mode that adopts resonant power to connect with high-voltage power supply is powered to the LC resonance modules; Control center passes through frequency modulation module controls IGBT electronic switch frequency, and changes the concussion frequency according to the capacity of aging electric capacity, and the electric capacity that makes system be applicable to all capacity wears out; The ripple voltage, the ripple current that produce pulsation by resonance principle carry out verification experimental verification to anti-ripple voltage, the ripple current performance parameter of measured capacitance device, can test anti-ripple voltage, the ripple current parameter of capacitor again.
Native system can make circuit working at resonant frequency point, also can make circuit working near above or below the resonant frequency point, and most important protection point is the frequency of operation that changes oscillating circuit by the electronic switch frequency that control center changes the frequency modulation module.
Description of drawings
Fig. 1 is capacitor aging test system structure block diagram.
Fig. 2 is the capacitor aging circuit diagram.
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Embodiment
Among Fig. 1, the capacitor aging test macro is comprised of human-computer interface module, control center, electric current and voltage detection module, resonant power charging rectifier discharge module, high-voltage power supply charging rectifier discharge module, frequency modulation module, LC concussion module.Control center obtains the signals such as electric current and voltage of system by the electric current and voltage detection module, control resonant power charging rectifier discharge module and high-voltage power supply charging rectifier discharge module are exchanged the frequency module power supply, and control center makes LC concussion module be operated in different frequencies by control frequency modulation module.Man-machine interface 1 can arrange the test parameters such as the voltage, electric current, frequency of testing capacitor.
Shown in Figure 2, the electric current and voltage detection module by voltage sensor 3,4,10,17,21,28,33 and current sensor 9,18,27 form.
Resonant power charging rectifier discharge module is comprised of air switch 1, pressure regulator 2, contactor 5 and 7, charging resistor 6, three phase full bridge rectification unit 8, Support Capacitor 12, contactor 13, discharge resistance 11,14.After turning off, system can bleed off at a slow speed electric weight in the electric capacity 12 with resistance 11.
High-voltage power supply charging rectifier discharge module is comprised of air switch 19, pressure regulator 20, contactor 22 and 24, charging resistor 23, step-up transformer 25, single-phase H bridge rectification unit 26, Support Capacitor 30, contactor 31, discharge resistance 29,32.By these two transformer combinations, can obtain the different high-voltage values of high pressure resonant power.After turning off, system can bleed off at a slow speed electric weight in the electric capacity 30 with resistance 29.
Resonant power and high-voltage power supply power acquisition add bridge rectifier circuit with pressure regulator and obtain, and also can use controlled rectification, the replacements such as PWM rectifier or high-voltage adjustable power supply.
The frequency modulation module is comprised of insulated gate bipolar transistor IGBT unit 15,16.This case frequency modulation module adopts IGBT module frequency modulation, can adopt other power semiconductor devices to replace, for example power transistor GTR, turn-off thyristor GTO, metal-oxide half field effect transistor MOSFET, integrated gate commutated thyristor IGCT, electron injection enhancement gate transistor IEGT etc., or intelligent power module, power electronics building blocks PEBB, power module IPEM etc. substitute.
LC concussion module is comprised of inductance 34, measured capacitance 35.
The utility model capacitor aging test circuit has adopted the LC series resonant circuit, also can adopt the LC parallel resonance to substitute cascaded structure.
At first the capacitor aging test circuit powers on, and sets frequency of operation, aging capacitance, operating voltage, working current, high voltage protective value, low-voltage variation value, aging capacitance overvoltage protection value, aging electric capacity overcurrent protection value by human-computer interface module.
In resonant power charging rectifier discharge module: three-phase alternating current is by pressure regulator 2, charging resistor 6,12 chargings of 8 pairs of Support Capacitors of three phase full bridge rectification unit, control center detects the charging voltage rear disconnection charging contactor 5 that satisfies condition, closed main contactor 7 is skipped charging resistor 6, and the resonant power power supply is finished.
In high-voltage power supply charging rectifier discharge module: single-phase alternating current is by pressure regulator 20, charging resistor 23, step- up transformer 25,30 chargings of 26 pairs of Support Capacitors of single-phase H bridge rectification unit, control center detects the charging voltage rear disconnection charging contactor 22 that satisfies condition, closed main contactor 24 is skipped charging resistor 23, and the high-voltage power supply power supply is finished.
The LC resonance principle: resonant power is connected with high-voltage power supply to LC concussion module for power supply by frequency modulation module output pulse square wave voltage.Control center control frequency modulation module output frequency is variable, the square-wave voltage that dutycycle 0～100% is adjustable.When output frequency equated with LC concussion module resonance frequency, aging electric capacity was operated in resonant condition, and working current is maximum, and it is minimum to consume electric energy.
At capacitor aging test circuit duration of work, the data such as the operating voltage of control center by the aging electric capacity of electric current and voltage detection module monitoring, working current, temperature also store as the aging of product, detecting information.And the setting according to the protection value is done corresponding protection to the capacitor aging test circuit.
After electric capacity wore out and finishes, the discharge cell in control center's control resonant power charging rectifier discharge module and the high-voltage power supply charging rectifier discharge module bled off the electric energy of Support Capacitor.
Claims (1)
1. capacitor aging test circuit, it is characterized in that: air switch (1) access three-phase alternating-current supply, pressure regulator (2) is connected with (1) of air switch, voltage sensor (3) and voltage sensor (4) are in parallel with the output terminal of pressure regulator (2) respectively, contactor (7) is connected with pressure regulator (2), contactor (5) is with in parallel with contactor (7) again after charging resistor (6) is connected, three phase full bridge rectification unit (8) is connected with pressure regulator (2), current sensor (9) is connected with three phase full bridge rectification unit (8), voltage sensor (10), discharge resistance (11) and Support Capacitor (12) are in parallel with the output terminal of current sensor (9) and three phase full bridge rectification unit respectively, contactor (13) is with in parallel with the output terminal of current sensor (9) and three phase full bridge rectification unit (8) again after discharge resistance (14) is connected, insulated gate bipolar transistor unit (15) is with in parallel with the output terminal of current sensor (9) and three phase full bridge rectification unit (8) again after connect insulated gate bipolar transistor unit (16), and voltage sensor (17) is held in parallel with the C end of insulated gate bipolar transistor unit (16) with E;
Air switch (19) access two-phase alternating current source, pressure regulator (20) is connected with air switch, voltage sensor (21) is in parallel with pressure regulator (20), contactor (24) is connected with pressure regulator (20), contactor (22) is with in parallel with contactor (24) again after charging resistor (23) is connected, step-up transformer (25) is connected with pressure regulator (20), single-phase H bridge rectification unit (26) is connected with step-up transformer (25), current sensor (27) is connected with single-phase H bridge rectification unit (26), voltage sensor (28), discharge resistance (29) and Support Capacitor (30) are in parallel with the output terminal of current sensor (27) and single-phase H bridge rectification unit (26) respectively;
Contactor (31) is with in parallel with voltage sensor (33) and measured capacitance (35) respectively again after discharge resistance (32) is connected;
The E end of insulated gate bipolar transistor unit (16) is connected with Support Capacitor (30);
Current sensor (18) is in parallel with voltage sensor (17), and inductance (34) is connected with current sensor (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220452585 CN202903906U (en) | 2012-09-06 | 2012-09-06 | Capacitor aging test circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220452585 CN202903906U (en) | 2012-09-06 | 2012-09-06 | Capacitor aging test circuit |
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| CN202903906U true CN202903906U (en) | 2013-04-24 |
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| CN 201220452585 Expired - Fee Related CN202903906U (en) | 2012-09-06 | 2012-09-06 | Capacitor aging test circuit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033697A (en) * | 2012-09-06 | 2013-04-10 | 漆良波 | Capacitor aging test circuit and aging system |
| CN105830326A (en) * | 2013-12-19 | 2016-08-03 | Abb技术有限公司 | Method and power converter for determining cell capacitor degradation in a converter cell |
| CN106896244A (en) * | 2017-04-12 | 2017-06-27 | 江苏伊施德创新科技有限公司 | Ageing fixture and the method that contact condition and the test of ageing result are done using the fixture |
| CN107843825A (en) * | 2017-11-18 | 2018-03-27 | 湖南艾华集团股份有限公司 | Capacitor aging equipment |
| CN114167187A (en) * | 2021-12-07 | 2022-03-11 | 中国南方电网有限责任公司超高压输电公司贵阳局 | AC filter capacitor abnormality detection device |
-
2012
- 2012-09-06 CN CN 201220452585 patent/CN202903906U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033697A (en) * | 2012-09-06 | 2013-04-10 | 漆良波 | Capacitor aging test circuit and aging system |
| CN103033697B (en) * | 2012-09-06 | 2015-07-08 | 漆良波 | Capacitor aging test circuit and aging system |
| CN105830326A (en) * | 2013-12-19 | 2016-08-03 | Abb技术有限公司 | Method and power converter for determining cell capacitor degradation in a converter cell |
| CN105830326B (en) * | 2013-12-19 | 2017-07-14 | Abb技术有限公司 | Method and power converter for determining the deterioration of the cell capaciator in converter unit |
| CN106896244A (en) * | 2017-04-12 | 2017-06-27 | 江苏伊施德创新科技有限公司 | Ageing fixture and the method that contact condition and the test of ageing result are done using the fixture |
| CN106896244B (en) * | 2017-04-12 | 2023-10-10 | 江苏伊施德创新科技有限公司 | Aging clamp and method for testing contact condition and aging result by using same |
| CN107843825A (en) * | 2017-11-18 | 2018-03-27 | 湖南艾华集团股份有限公司 | Capacitor aging equipment |
| CN107843825B (en) * | 2017-11-18 | 2024-06-11 | 湖南艾华集团股份有限公司 | Capacitor aging device |
| CN114167187A (en) * | 2021-12-07 | 2022-03-11 | 中国南方电网有限责任公司超高压输电公司贵阳局 | AC filter capacitor abnormality detection device |
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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: 20130424 Termination date: 20140906 |
|
| EXPY | Termination of patent right or utility model |