CN108872745A - Frequency converter aging testing system - Google Patents
Frequency converter aging testing system Download PDFInfo
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- CN108872745A CN108872745A CN201810675618.6A CN201810675618A CN108872745A CN 108872745 A CN108872745 A CN 108872745A CN 201810675618 A CN201810675618 A CN 201810675618A CN 108872745 A CN108872745 A CN 108872745A
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- Prior art keywords
- frequency converter
- phase
- inductance
- testing system
- capacitor
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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
- G01R31/003—Environmental or reliability tests
Abstract
The present invention discloses a kind of frequency converter aging testing system, and frequency converter aging testing system includes three-phase alternating current electrical input, N platform frequency converter, N-1 inductance capacitor filtering network and burn-in test load；Each frequency converter successively replaces series connection with each inductance capacitor filtering network, until connected N platform frequency converter and N-1 inductance capacitor filtering network, the power input of First frequency converter is connect with three-phase alternating current electrical input, the power output end of First frequency converter is connect with the power input of the first inductance capacitor filtering network, and the power output end of N platform frequency converter is connect with the power input that burn-in test loads.Technical solution of the present invention solves the problems, such as that frequency converter burn-in test low efficiency, energy consumption are high.
Description
Technical field
The present invention relates to converter technology field, in particular to a kind of frequency converter aging testing system.
Background technique
Frequency converter controls loaded work piece by way of changing loaded work piece supply frequency, with the hair of power electronics industry
Exhibition, is increasingly stringenter the quality requirement of frequency converter, needs to test each performance of frequency converter before frequency converter factory.Always
Changing test is exactly to simulate the electrical feature oepration at full load of actual loading to reach aging frequency converter with the performance of test frequency converter,
Improve the purpose of product quality.
Frequency converter producer generally uses separate unit frequency converter respectively with the aging scheme carried at present, since each load is surveyed every time
Separate unit frequency converter is tried, operating efficiency is low and consumes a large amount of electric energy.
Summary of the invention
The main object of the present invention is to provide a kind of frequency converter aging testing system, it is intended to solve frequency converter burn-in test effect
The problem that rate is low, energy consumption is high.
To achieve the above object, a kind of frequency converter aging testing system proposed by the present invention includes three-phase alternating current input
End, N platform frequency converter, N-1 inductance capacitor filtering network and burn-in test load；Each frequency converter and each inductance
Capacitor filter network is successively alternately connected in series, until connected frequency converter described in N platform and the N-1 inductance capacitor filtering nets
The power input of network, frequency converter described in First is connect with the three-phase alternating current electrical input, frequency converter described in First
Power output end is connect with the power input of the first inductance capacitor filtering network, the power output end of frequency converter described in N platform
It is connect with the power input of burn-in test load；
The inductance capacitor filtering network, for being filtered to the AC power source flowed through；
Burn-in test load, for working when the frequency converter band carries frequency conversion, with realize to the frequency converter into
Row burn-in test.
Preferably, the inductance capacitor filtering network includes the first inductance, the second inductance, third inductance, first capacitor, the
Two capacitors and third capacitor；First inductance is connected in the A phase in three-phase line, and second inductance is connected on triple line
In B phase in road, the third inductance is connected in the C phase in three-phase line, and the first capacitor is connected in parallel on the A phase and institute
It states in B phase, second capacitor is connected in parallel on the B phase in the C phase, and the third capacitor is connected in parallel on the A phase and the C
Xiang Shang.
Preferably, the burn-in test load includes resistor network, blower or load of the pumps.
Preferably, the frequency converter aging testing system further includes N number of RS232/485 converter, each frequency converter
It is connect respectively via a RS232/485 converter with host computer.
Preferably, the frequency converter aging testing system further includes the delay relay for AC power source described in time delayed turn-off
Device, the power input of the time relay are connect with the three-phase alternating current electrical input, the power supply of the time relay
Output end is connect with the power input of the First frequency converter.
Preferably, the delay time of the time-delay relay is more than or equal to 3 hours and is less than or equal to 5 hours.
Preferably, the power of each frequency converter is more than or equal to 3KW and is less than or equal to 20KW.
Technical solution of the present invention is by building frequency converter aging testing system, multiple frequency converters and inductance capacitor filtering network
It successively alternately connects, and is connected in line end and burn-in test load, connect by the voltage and current of each frequency converter
Nearly rated value, all frequency converters in comprehensive ageing system, and since inductance capacitor filtering network does not consume active power, because
The active power consumed in this system concentrates on last aged load.It once can be with by the frequency converter aging testing system
Aging N platform frequency converter, operating efficiency can be improved N times, and the power relative to the consumption of traditional aging scheme is reduced to 1/N, greatly
It improves burn-in test efficiency and reduces aging power consumption.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the modular structure schematic diagram of one embodiment of frequency converter aging testing system of the present invention；
Fig. 2 is the circuit structure signal of inductance capacitor filtering network in one embodiment of frequency converter aging testing system of the present invention
Figure.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and cannot understand
For its relative importance of indication or suggestion or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include at least one of the features.In addition, the technical side between each embodiment
Case can be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution
Conflicting or cannot achieve when occur will be understood that the combination of this technical solution is not present, also not the present invention claims guarantor
Within the scope of shield.
The present invention proposes a kind of frequency converter aging testing system.
As shown in FIG. 1, FIG. 1 is the modular structure schematic diagram of one embodiment of frequency converter aging testing system of the present invention, frequency conversions
Device aging testing system includes three-phase alternating current electrical input (not shown go out), N platform frequency converter, N-1 inductance capacitor filtering network
And burn-in test loads LOAD；Each frequency converter VFD successively replaces series connection with each inductance capacitor filtering network LC
Connection, until connected frequency converter described in N platform and the N-1 inductance capacitor filtering networks, frequency converter VFD1 described in First
Power input connect with the three-phase alternating current electrical input, the power output end of frequency converter VFD1 and first described in First
The power input of inductance capacitor filtering network LC1 connects, the power output end of frequency converter VFDN described in N platform and the aging
The power input of test load LOAD connects；
The inductance capacitor filtering network LC, for being filtered to the AC power source flowed through；
The burn-in test loads LOAD, for working when the frequency converter VFD band carries frequency conversion, to realize to the change
Frequency device VFD carries out burn-in test.
It should be noted that frequency converter VFD successively replaces connection with inductance capacitor filtering network LC in the present embodiment, the
One frequency converter VFD1 input ac power, frequency converter carries out the electric current of frequency conversion and output rated voltage to AC power source, specified
Voltage and rated current are exported after inductance capacitor filtering network filtering to second frequency converter, until output rated voltage and
The burn-in test load LOAD burn-in test of rated current to end loads LOAD, and without electricity in inductance capacitor filtering network LC
Resistance element does not consume active power for perception and capacitive load, and the active power of AC power source output is finally consumed in aging
On test load LOAD, to can be achieved at the same time to more frequency converter VFD while carry out burn-in test, and energy consumption is reduced, than
Such as, when the quantity of frequency converter is 10, connect an inductance capacitor filtering network LC among every two frequency converter VFD, testing efficiency
Carrying test compared with separate unit frequency converter VFD band can be improved 10 times, and consuming energy reduces 10 when carrying test compared with separate unit frequency converter VFD band
Times.
In the present embodiment, the quantity of frequency converter VFD can be attached according to actual test demand, not do specific limit herein
System, corresponding, inductance capacitor filtering network LC is correspondingly arranged according to the quantity of frequency converter VFD, is gone here and there between every two frequency converter VFD
Join an inductance capacitor filtering network LC.
It is understood that also needing the energization test for carrying out single inverter VFD, confirmation before frequency converter VFD aging
Whether frequency converter VFD can work normally, such as voltage-withstand test and underloading test.
Similarly, need to also need to carry out corresponding test, including load testing and end after frequency converter VFD burn-in test
Sub- platform test, load testing refer to that such as motor load dragged to frequency converter VFD adds the motor load of same model, end
Sub- platform test refers to testing whether the on-off function of various terminals and parameter setting are normal.
Technical solution of the present invention is by building frequency converter aging testing system, multiple frequency converter VFD and inductance capacitor filtering
Network is successively alternately connected, and is connect in line end and burn-in test load LOAD, by the voltage of each frequency converter with
Electric current is close to rated value, all frequency converter VFD in comprehensive ageing system, and since inductance capacitor filtering network LC does not disappear
Active power is consumed, therefore the active power consumed in system concentrates on last burn-in test load LOAD.Pass through the frequency conversion
Device aging testing system once can be can be improved N times, be disappeared relative to traditional aging scheme with aging N platform frequency converter VFD, operating efficiency
The power of consumption is reduced to 1/N, greatly improves burn-in test efficiency and reduces aging power consumption.
In the present embodiment, the inductance capacitor filtering network LC includes the first inductance L1, the second inductance L2, third inductance
L3, first capacitor C1, the second capacitor C2 and third capacitor C3；The first inductance L1 is connected in the A phase in three-phase line, institute
It states in the B phase that the second inductance L2 is connected in three-phase line, the third inductance L3 is connected in the C phase in three-phase line, institute
State first capacitor C1 be connected in parallel on the A phase in the B phase, the second capacitor C2 be connected in parallel on the B phase in the C phase,
The third capacitor C3 be connected in parallel on the A phase in the C phase.
It is understood that inductance is mounted in measurement circuit with capacitor according to corresponding connection type, inductance is connected on
Corresponding branch road, every two-phase branch road capacitor in parallel, inductance capacitance play the role of voltage regulation filtering, prevent frequency converter from generating
Current harmonics or voltage harmonic, which flow into next frequency converter, influences burn-in test, and inductance belongs to inductive load, electricity
Appearance belongs to capacitive load, does not consume active power, finally consumption is negative in burn-in test for the active power of AC power source output
It carries on LOAD.
In the present embodiment, the burn-in test load LOAD includes resistor network, blower or load of the pumps.
It should be noted that the burn-in test load LOAD of frequency converter institute band can be resistor network, i.e., pure in the present embodiment
Resistive load directly drives blower or pump class either to complete burn-in test.
In the present embodiment, the frequency converter aging testing system further includes N number of RS232/485 converter (not shown go out),
Each frequency converter is connect via a RS232/485 converter with host computer respectively.
Whether it should be noted that normal in ageing process in order to monitor each frequency converter, each frequency converter also passes through
Corresponding RS232/485 converter is connect with host computer, when frequency converter burn-in test by RS232/485 converter by itself
Each parameter is exported to host computer, and the main effect of RS232/485 converter is that single-ended RS-232 signal is converted to balanced differences
Point RS-485 signal, host computer by display unit can each frequency converter of real time inspection ageing state, and judge whether there is
Frequency converter failure occurs.
In the present embodiment, the frequency converter aging testing system further includes the delay for AC power source described in time delayed turn-off
Relay (not shown go out), the power input of the time relay is connect with the three-phase alternating current electrical input, when described
Between the power output end of relay connect with the power input of the First frequency converter VFD1.
It should be noted that in the present embodiment, be additionally provided with time-delay relay before First frequency converter VFD1, delay after
Electric appliance can artificially preset delay time, and after AC power source input time delay relay, time-delay relay, which is powered, starts timing, multiple
Frequency converter starts to carry out burn-in test, and after delay time, time-delay relay is disconnected, and AC power source stops output to rear end
Frequency converter aging testing system, multiple frequency converters complete burn-in tests.
In the present embodiment, the preset time of the time relay is more than or equal to 3 hours and small less than or equal to 5
When.
It should be noted that each frequency converter ageing time is preset in 3 to 5 hours in the present embodiment, the time is too short to be not achieved
The effect of burn-in test, overlong time can then consume more electric energy.
In the present embodiment, the power of each frequency converter is more than or equal to 3KW and is less than or equal to 20KW.
It should be noted that frequency converter aging testing system can be realized to a variety of different rated power in the present embodiment
Frequency converter carries out burn-in test, this frequency converter aging testing system can be used in 3KW to 20KW in rated power.
It is understood that multiple frequency converters should be using same when being once embodied as multiple frequency converters progress burn-in tests
The frequency converter of kind model carries out aging simultaneously, and single inverter damages caused by avoiding because of the difference of voltage rating or rated current
It is bad.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (7)
1. a kind of frequency converter aging testing system, which is characterized in that including three-phase alternating current electrical input, N platform frequency converter, N-1
Inductance capacitor filtering network and burn-in test load；Each frequency converter is successively handed over each inductance capacitor filtering network
For series connection, until connected frequency converter described in N platform and the N-1 inductance capacitor filtering networks, frequency conversion described in First
The power input of device is connect with the three-phase alternating current electrical input, the power output end of frequency converter described in First and the first electricity
Feel the power input connection of capacitor filter network, the power output end and the burn-in test of frequency converter described in N platform load
Power input connection；
The inductance capacitor filtering network, for being filtered to the AC power source flowed through；
The burn-in test load carries out always the frequency converter with realizing for working when the frequency converter band carries frequency conversion
Change test.
2. frequency converter aging testing system as described in claim 1, which is characterized in that the inductance capacitor filtering network includes
First inductance, the second inductance, third inductance, first capacitor, the second capacitor and third capacitor；First inductance is connected on three-phase
In A phase in route, second inductance is connected in the B phase in three-phase line, and the third inductance is connected on three-phase line
In C phase on, the first capacitor is connected in parallel on the A phase in the B phase, and second capacitor is connected in parallel on the B phase and institute
State in C phase, the third capacitor be connected in parallel on the A phase in the C phase.
3. frequency converter aging testing system as described in claim 1, which is characterized in that the burn-in test load includes resistance
Network, blower or load of the pumps.
4. frequency converter aging testing system as described in claim 1, which is characterized in that the frequency converter aging testing system is also
Including N number of RS232/485 converter, each frequency converter is respectively via a RS232/485 converter and host computer
Connection.
5. frequency converter aging testing system as described in claim 1, which is characterized in that the frequency converter aging testing system is also
Including the time-delay relay for AC power source described in time delayed turn-off, the power input of the time relay and the three-phase
The power input of AC input connection, the power output end of the time relay and the First frequency converter connects
It connects.
6. frequency converter aging testing system as claimed in claim 5, which is characterized in that the delay time of the time-delay relay
More than or equal to 3 hours and it is less than or equal to 5 hours.
7. frequency converter aging testing system as described in claim 1, which is characterized in that the power of each frequency converter is greater than
Or it is equal to 3KW and is less than or equal to 20KW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810675618.6A CN108872745A (en) | 2018-06-26 | 2018-06-26 | Frequency converter aging testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810675618.6A CN108872745A (en) | 2018-06-26 | 2018-06-26 | Frequency converter aging testing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108872745A true CN108872745A (en) | 2018-11-23 |
Family
ID=64295955
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810675618.6A Pending CN108872745A (en) | 2018-06-26 | 2018-06-26 | Frequency converter aging testing system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1779471A (en) * | 2004-11-17 | 2006-05-31 | 上海神源电气有限公司 | Frequency-converter ageing tester |
| CN203259607U (en) * | 2013-04-12 | 2013-10-30 | 天津瑞能电气有限公司 | Aging testing device for frequency converter |
| CN103399228A (en) * | 2013-07-30 | 2013-11-20 | 苏州汇川技术有限公司 | Total power aging test circuit for current transformer or frequency transformer |
| CN205067633U (en) * | 2015-10-31 | 2016-03-02 | 山东奥卓电气科技发展有限公司 | Converter aging testing device |
| CN205120872U (en) * | 2015-11-13 | 2016-03-30 | 天津瑞能电气有限公司 | Test platform suitable for an even number converter |
| CN105606922A (en) * | 2015-12-18 | 2016-05-25 | 常熟理工学院 | Multi-frequency-converter aging test method and system based on LabVIEW |
| CN206223830U (en) * | 2016-11-02 | 2017-06-06 | 深圳市鼎泰佳创科技有限公司 | A kind of novel energy-conserving feedback type electronic load based on frequency converter |
-
2018
- 2018-06-26 CN CN201810675618.6A patent/CN108872745A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1779471A (en) * | 2004-11-17 | 2006-05-31 | 上海神源电气有限公司 | Frequency-converter ageing tester |
| CN203259607U (en) * | 2013-04-12 | 2013-10-30 | 天津瑞能电气有限公司 | Aging testing device for frequency converter |
| CN103399228A (en) * | 2013-07-30 | 2013-11-20 | 苏州汇川技术有限公司 | Total power aging test circuit for current transformer or frequency transformer |
| CN205067633U (en) * | 2015-10-31 | 2016-03-02 | 山东奥卓电气科技发展有限公司 | Converter aging testing device |
| CN205120872U (en) * | 2015-11-13 | 2016-03-30 | 天津瑞能电气有限公司 | Test platform suitable for an even number converter |
| CN105606922A (en) * | 2015-12-18 | 2016-05-25 | 常熟理工学院 | Multi-frequency-converter aging test method and system based on LabVIEW |
| CN206223830U (en) * | 2016-11-02 | 2017-06-06 | 深圳市鼎泰佳创科技有限公司 | A kind of novel energy-conserving feedback type electronic load based on frequency converter |
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Application publication date: 20181123 |