CN107390044A - Automatic fast charging and discharging test system and method - Google Patents

Automatic fast charging and discharging test system and method Download PDF

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Publication number
CN107390044A
CN107390044A CN201710458670.1A CN201710458670A CN107390044A CN 107390044 A CN107390044 A CN 107390044A CN 201710458670 A CN201710458670 A CN 201710458670A CN 107390044 A CN107390044 A CN 107390044A
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CN
China
Prior art keywords
contactor
time
delay relay
control
coil
Prior art date
Application number
CN201710458670.1A
Other languages
Chinese (zh)
Inventor
胡艳武
Original Assignee
深圳易能电气技术股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 深圳易能电气技术股份有限公司 filed Critical 深圳易能电气技术股份有限公司
Priority to CN201710458670.1A priority Critical patent/CN107390044A/en
Publication of CN107390044A publication Critical patent/CN107390044A/en

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/003Environmental or reliability tests

Abstract

The present invention relates to automatic fast charging and discharging test system and method, wherein, automatic fast charging and discharging test system, including major loop connection unit and control unit;Described control unit, it receives input signal and outputs control signals to major loop connection unit;The major loop connection unit, it receives the control signal of described control unit output, the front-end circuit of frequency converter is charged, P+ and P terminals are discharged.The present invention is used to test the rectification in fast charging and discharging low-converter front end, starts the tolerance and stability of resistance, bypass contactor and main capacitance, it ensure that reliability when client subsequently uses frequency converter, and the element used in existing invention is seldom, it is not necessary to buys PLC, reduces cost;The present invention is also supplemented with the tester vacancy for being applicable test frequency converter's input reliability.

Description

Automatic fast charging and discharging test system and method
Technical field
The present invention relates to method of testing, more specifically refers to automatic fast charging and discharging test system and method.
Background technology
Without the equipment for being applicable test frequency converter's input reliability on existing market, for test frequency converter's input Rectification in fast charging and discharging low-converter front end, start the tolerance of resistance, bypass contactor and main capacitance.
Therefore, it is necessary to develop new test system and method, solve the problems, such as the reliability testing of inverter input, By carrying out fast charging and discharging test to frequency converter under different input voltages, ensure that subsequent clients are unexpected using occurring at the scene Be not in exception when having a power failure and sending a telegram here suddenly.
The content of the invention
The defects of it is an object of the invention to overcome prior art, there is provided automatic fast charging and discharging test system and method.
To achieve the above object, the present invention uses following technical scheme:
Automatic fast charging and discharging test system, including major loop connection unit and control unit;Described control unit, it connects Receive input signal and output control signals to major loop connection unit;The major loop connection unit, it is single that it receives the control The control signal of member output, charges to the front-end circuit of frequency converter, P+ and P- terminals is discharged.
Its further technical scheme is:The major loop connection unit includes contactor KM1, frequency converter and contactor KM2; When control unit is powered, normally closed become in control contact disconnects, normally opened to become closure, and control contactor KM1 coils obtain electric, major loop connection Unit contactor KM1 normally opened contact adhesives, frequency converter start to charge up.
Its further technical scheme is:Described control unit includes time-delay relay KT1 and button SB2;When button SB2 quilts To press, time-delay relay KT1 coil electricities start timing, and time-delay relay KT1 disconnects without normally closed become in contact of delay function, Normally opened to become closure, time-delay relay KT1 control band delay functions contact does not change, and time-delay relay KT1 coils persistently supply Electricity.
Its further technical scheme is:Described control unit also includes contactor KM4, contactor KM3 and time-delay relay KT2;After the time set by time-delay relay KT1, contacts of the time-delay relay KT1 with delay function is normally opened to become closure, Normally closed become disconnects, control contactor KM4 coil blackouts, contactor KM4 contacts control contactor KM1 coil blackouts, contactor KM3 With time-delay relay KT2 coil electricities.
Its further technical scheme is:Described control unit also includes contactor KM5;As contactor KM3 and delay relay After device KT2 coil electricities, contactor KM3 and time-delay relay KT2 close without normally opened immediately become in contact of delay function, normally closed Disconnect, contactor KM5 coil electricities, normally closed become in contactor KM5 contact disconnects, normally opened to become closure, control contactor KM2 coils It is powered, major loop connection unit starts to discharge, and contact of the time-delay relay KT2 controls with delay function does not change.
Its further technical scheme is:Described control unit also includes contactor KM4, contactor KM3 and time-delay relay KT2;By time-delay relay KT2 setting time, contact of the time-delay relay KT2 controls with delay function is normally opened to become closure, Normally closed become disconnects, and control contactor KM4 coils obtain electric.
Automatic fast charging and discharging method of testing, comprises the following steps;
Step 1, system electrification;
Step 2, contactor KM4 adhesives;
Step 3, contactor KM1 adhesives start to charge up;
Step 4, button SB2 is pressed, proceed by timing charging, time-delay relay KT1 coil electricities;
Step 5, reach time-delay relay KT1 setting times, contactor KM4 and contactor KM1 coil blackouts;
Step 6, contactor KM3 and time-delay relay KT2 coil electricities, proceed by timing electric discharge;
Step 7, contactor KM5 and contactor KM2 coil electricities, control unit start to discharge;
Step 8, time-delay relay KT2 setting times, contactor KM5 and contactor KM2 coil blackouts are reached, stops putting Electricity;
Step 9, return to step two.
Compared with the prior art, the invention has the advantages that:The automatic fast charging and discharging test system of the present invention and side Method, by control unit, it receives input signal and outputs control signals to major loop connection unit;Major loop connection unit, The control signal of its reception control unit output, charges to the front-end circuit of frequency converter, P+ and P- terminals is discharged; The rectification of frequency converter front end is tested, starts resistance, the stability of bypass contactor and main capacitance under fast charging and discharging, protects Reliability when client subsequently uses frequency converter is demonstrate,proved, and element used in existing invention control unit is seldom, it is not necessary to purchase PLC is bought, reduces cost;The present invention is also supplemented with the tester vacancy for being applicable test frequency converter's input reliability.
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the automatic fast charging and discharging circuit theory diagrams of three-phase in the automatic fast charging and discharging test system of the present invention;
Fig. 2 is single-phase automatic fast charging and discharging circuit theory diagrams in the automatic fast charging and discharging test system of the present invention;
Fig. 3 is the flow chart of the automatic fast charging and discharging method of testing of the present invention.
Embodiment
In order to more fully understand the technology contents of the present invention, technical scheme is entered with reference to specific embodiment One step introduction and explanation, but it is not limited to this.
Specific embodiment as shown in Figures 1 to 3, automatic the fast charging and discharging test system and method that the present embodiment provides, Wherein, automatic fast charging and discharging test system, including major loop connection unit and control unit;Control unit, it receives input Signal simultaneously outputs control signals to major loop connection unit;Major loop connection unit, the control letter of its reception control unit output Number, the front-end circuit of frequency converter is charged, P+ and P- terminals are discharged.
Specifically, as shown in Fig. 1~2, major loop connection unit includes contactor KM1, frequency converter and contactor KM2;When Control unit is powered, and the normally closed change in control contact disconnects, normally opened to become closure, and control contactor KM1 coils obtain electric, major loop connection list First contactor KM1 normally opened contact adhesives, frequency converter start to charge up.
Wherein, control unit includes time-delay relay KT1 and button SB2;When button SB2 is pressed, time-delay relay KT1 Coil electricity starts timing, and time-delay relay KT1 controls normally closed become in contact without delay function to disconnect, normally opened to become closure, prolongs When relay KT1 control band delay function contact do not change, time-delay relay KT1 coil continued powers.
Further, control unit also includes contactor KM4, contactor KM3 and time-delay relay KT2;When by prolonging When relay KT1 setting time after, contacts of the time-delay relay KT1 with delay function is normally opened to become closure, and normally closed become disconnects, control Contactor KM4 coil blackouts processed, contactor KM4 contacts control contactor KM1 coil blackouts, contactor KM3 and time-delay relay KT2 coil electricities.
Further, control unit also includes contactor KM5;As contactor KM3 and time-delay relay KT2 coil electricities Afterwards, contactor KM3 and time-delay relay KT2 closes without normally opened immediately become in contact of delay function, normally closed disconnection, contactor KM5 coil electricities, normally closed become in contactor KM5 contact disconnects, normally opened to become closure, control contactor KM2 coil electricities, major loop Connection unit starts to discharge, and contact of the time-delay relay KT2 controls with delay function does not change.
Further, when the time by time-delay relay KT2 settings, time-delay relay KT2 control band delay functions Contact it is normally opened become closure, normally closed become disconnects, and control contactor KM4 coils obtain electric, repeat charge and discharge process above.
Wherein, single-phase automatic fast charging and discharging circuit theory and the automatic fast charging and discharging circuit theory of three-phase in Fig. 1 in Fig. 2 Essentially the same, simply supply voltage and charging voltage are otherwise varied, and other control principles are just the same.
As shown in figure 3, the invention also discloses automatic fast charging and discharging method of testing, comprise the following steps;
Step 1, system electrification;
Step 2, contactor KM4 adhesives;
Step 3, contactor KM1 adhesives start to charge up;
Step 4, button SB2 is pressed, proceed by timing charging, time-delay relay KT1 coil electricities;
Step 5, reach time-delay relay KT1 setting times, contactor KM4 and contactor KM1 coil blackouts;
Step 6, contactor KM3 and time-delay relay KT2 coil electricities, start to put according to the progress timing of KT2 setting times Electricity;
Step 7, contactor KM5 and contactor KM2 coil electricities, control unit start to discharge;
Step 8, time-delay relay KT2 setting times, contactor KM5 and contactor KM2 coil blackouts are reached, stops putting Electricity;
Step 9, return to step two.
Wherein, specific testing process is:Control unit is powered, contactor KM4 coil electricities, and control contact is normally closed to become disconnected Open, normally opened to become closure, control contactor KM1 coils obtain electric, and major loop contactor KM1 normally opened contact adhesives, frequency converter starts to fill Electricity;Button SB2 is pressed, time-delay relay KT1 coil electricities start timing, while time-delay relay KT1 controls are without delay work( Normally closed become disconnects for the contact of energy, normally opened to become closure, and time-delay relay KT1 controls band delay function contact not change, ensured Time-delay relay KT1 coil continued powers;The time set by time-delay relay KT1, time-delay relay KT1 control band delays The contact of function is normally opened to become closure, and normally closed become is disconnected, now control contactor KM4 coil blackouts, and then contactor KM4 contacts are controlled Contactor KM1 coil blackouts processed, while contactor KM3 and time-delay relay KT2 coil electricities;Contactor KM3 and delay relay After device KT2 coil electricities, contactor KM3 and time-delay relay KT2 controls close without normally opened immediately become in contact of delay function, Normally closed disconnection, then contactor KM5 coil electricities, the contactor KM5 normally closed change in contact disconnect, and normally opened to become closure, control contacts Device KM2 coil electricities, now major loop connection unit start to discharge;Time-delay relay KT2 starts timing, by time-delay relay The time of KT2 settings, the delayed contact of time-delay relay KT2 controls is normally opened to become closure, and normally closed become disconnects, now contactor KM5 Coil blackout, then contactor KM2 coil blackouts, while time-delay relay KT1 energization starts timing, is circulated above-mentioned always Process.
Wherein, it should which rationally control is charged and discharged the time, and guarantee begins to discharge, contactor KM1 and connect after charging electricity Tentaculum KM2 need to have interlocking, ensure that two contactors will not all turn in the same time, otherwise may damage frequency converter;Close The size of reason selection discharge resistance, other elements will not be influenceed because discharge current is too big while guaranteeing repid discharge, Algorithm according to braking resistor resistance carries out type selecting, twice of power amplification, ensures that electric discharge uses for a long time.
In the present embodiment, reliability when can ensure subsequently to use frequency converter by the test, in addition the test side Method can reduce much with respect to PLC design costs.
In other embodiment, above-mentioned contactor KM3, KM4 and KM5 can change relay into, can equally realize function.
In other embodiment, the control program of control unit can be realized by PLC schemes.
In summary, the rectification of the invention for testing frequency converter front end, startup resistance, bypass contactor and main capacitance Stability, reliability when client subsequently uses frequency converter is ensure that, and element used in existing invention control unit is seldom, PLC need not be bought, reduces cost;The present invention is also empty supplemented with the tester for being applicable test frequency converter's input reliability Lack.
The above-mentioned technology contents that the present invention is only further illustrated with embodiment, in order to which reader is easier to understand, but not Represent embodiments of the present invention and be only limitted to this, any technology done according to the present invention extends or recreation, by the present invention's Protection.Protection scope of the present invention is defined by claims.

Claims (7)

1. automatic fast charging and discharging test system, it is characterised in that including major loop connection unit and control unit;The control Unit, it receives input signal and outputs control signals to major loop connection unit;The major loop connection unit, it receives institute The control signal of control unit output is stated, the front-end circuit of frequency converter is charged, P+ and P- terminals are discharged.
2. automatic fast charging and discharging test system according to claim 1, it is characterised in that the major loop connection unit Including contactor KM1, frequency converter and contactor KM2;When control unit is powered, normally closed become in control contact disconnects, normally opened to become closure, Control contactor KM1 coils obtain electric, and major loop connection unit contactor KM1 normally opened contact adhesives, frequency converter starts to charge up.
3. automatic fast charging and discharging test system according to claim 2, it is characterised in that described control unit includes prolonging When relay KT1 and button SB2;When button SB2 is pressed, time-delay relay KT1 coil electricities start timing, time-delay relay KT1 disconnects without normally closed become in contact of delay function, and normally opened to become closure, time-delay relay KT1 control band delay functions contact is not Change, time-delay relay KT1 coil continued powers.
4. automatic fast charging and discharging test system according to claim 3, it is characterised in that described control unit also includes Contactor KM4, contactor KM3 and time-delay relay KT2;After the time set by time-delay relay KT1, time-delay relay Contacts of the KT1 with delay function is normally opened to become closure, and normally closed become disconnects, control contactor KM4 coil blackouts, contactor KM4 contacts Control contactor KM1 coil blackouts, contactor KM3 and time-delay relay KT2 coil electricities.
5. automatic fast charging and discharging test system according to claim 4, it is characterised in that described control unit also includes Contactor KM5;After contactor KM3 and time-delay relay KT2 coil electricities, contactor KM3 and time-delay relay KT2 are without prolonging Shi Gongneng contact is normally opened immediately to become closure, and normally closed disconnection, contactor KM5 coil electricities, contactor KM5 contact is normally closed to become disconnected Open, normally opened to become closure, control contactor KM2 coil electricities, major loop connection unit starts to discharge, time-delay relay KT2 controls Contact with delay function does not change.
6. automatic fast charging and discharging test system according to claim 3, it is characterised in that described control unit also includes Contactor KM4, contactor KM3 and time-delay relay KT2;By time-delay relay KT2 setting time, time-delay relay KT2 Control the contact with delay function is normally opened to become closure, normally closed become disconnects, and control contactor KM4 coils obtain electric.
7. automatic fast charging and discharging method of testing, it is characterised in that comprise the following steps;
Step 1, system electrification;
Step 2, contactor KM4 adhesives;
Step 3, contactor KM1 adhesives start to charge up;
Step 4, button SB2 is pressed, proceed by timing charging, time-delay relay KT1 coil electricities;
Step 5, reach time-delay relay KT1 setting times, contactor KM4 and contactor KM1 coil blackouts;
Step 6, contactor KM3 and time-delay relay KT2 coil electricities, proceed by timing electric discharge;
Step 7, contactor KM5 and contactor KM2 coil electricities, control unit start to discharge;
Step 8, time-delay relay KT2 setting times, contactor KM5 and contactor KM2 coil blackouts are reached, stop electric discharge;
Step 9, return to step two.
CN201710458670.1A 2017-06-16 2017-06-16 Automatic fast charging and discharging test system and method CN107390044A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710458670.1A CN107390044A (en) 2017-06-16 2017-06-16 Automatic fast charging and discharging test system and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710458670.1A CN107390044A (en) 2017-06-16 2017-06-16 Automatic fast charging and discharging test system and method

Publications (1)

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CN107390044A true CN107390044A (en) 2017-11-24

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201001027Y (en) * 2006-03-03 2008-01-02 郑德星 Autocontrol protective equipment of frequency converter for intelligent electricity-saving equipment
CN202041590U (en) * 2010-12-31 2011-11-16 珠海格力新元电子有限公司 Capacitor charge and discharge tester
CN102288923A (en) * 2011-07-29 2011-12-21 株洲南车时代电气股份有限公司 Current transformer module testing device and method
CN203071851U (en) * 2013-01-24 2013-07-17 威尔凯电气(上海)有限公司 Starting cabinet for variable-frequency drive
CN104767373A (en) * 2015-04-27 2015-07-08 海南汉地阳光石油化工有限公司 Frequency converter low voltage self-starting control method and system
CN205049675U (en) * 2015-10-31 2016-02-24 山东奥卓电气科技发展有限公司 Converter aging testing system
CN205374637U (en) * 2016-02-02 2016-07-06 广东小天才科技有限公司 Switching on and shutting down testing arrangement
CN205544216U (en) * 2015-12-19 2016-08-31 河南怡祥工贸有限公司 Utilize converter and control circuit to prevent to shake device that film makes a sound
CN205910272U (en) * 2016-07-27 2017-01-25 深圳市英威腾电气股份有限公司 Photovoltaic inverter testing device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201001027Y (en) * 2006-03-03 2008-01-02 郑德星 Autocontrol protective equipment of frequency converter for intelligent electricity-saving equipment
CN202041590U (en) * 2010-12-31 2011-11-16 珠海格力新元电子有限公司 Capacitor charge and discharge tester
CN102288923A (en) * 2011-07-29 2011-12-21 株洲南车时代电气股份有限公司 Current transformer module testing device and method
CN203071851U (en) * 2013-01-24 2013-07-17 威尔凯电气(上海)有限公司 Starting cabinet for variable-frequency drive
CN104767373A (en) * 2015-04-27 2015-07-08 海南汉地阳光石油化工有限公司 Frequency converter low voltage self-starting control method and system
CN205049675U (en) * 2015-10-31 2016-02-24 山东奥卓电气科技发展有限公司 Converter aging testing system
CN205544216U (en) * 2015-12-19 2016-08-31 河南怡祥工贸有限公司 Utilize converter and control circuit to prevent to shake device that film makes a sound
CN205374637U (en) * 2016-02-02 2016-07-06 广东小天才科技有限公司 Switching on and shutting down testing arrangement
CN205910272U (en) * 2016-07-27 2017-01-25 深圳市英威腾电气股份有限公司 Photovoltaic inverter testing device

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Application publication date: 20171124