CN107248821A - A kind of nonlinear load analogue means - Google Patents
A kind of nonlinear load analogue means Download PDFInfo
- Publication number
- CN107248821A CN107248821A CN201710665644.6A CN201710665644A CN107248821A CN 107248821 A CN107248821 A CN 107248821A CN 201710665644 A CN201710665644 A CN 201710665644A CN 107248821 A CN107248821 A CN 107248821A
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- Prior art keywords
- cluster
- capacitance
- resistance
- solid
- state relay
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Classifications
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- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/175—Indicating the instants of passage of current or voltage through a given value, e.g. passage through zero
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of nonlinear load analogue means, including rectifier bridge, capacitance-resistance pairing cluster, diode cluster, DC solid-state relay cluster, insulated gate bipolar transistor and trigger control unit；The rectifier bridge carries out full-wave rectification to the alternating current for being tested inverter output, is changed into Rectified alternating current；The diode cluster, capacitance-resistance pairing cluster, DC solid-state relay cluster are sequentially connected to the output end of rectifier bridge；The insulated gate bipolar transistor is connected to the point lower end in parallel of DC solid-state relay cluster, and cluster is matched to capacitance-resistance and carries out break-make control with the Rectified alternating current after rectification；The trigger control unit is connected between the output end of rectifier bridge, for controlling turning on and off for insulated gate bipolar transistor.The present invention can adjust current peak factor by the regulation to trigger control unit；By matching the control of cluster to capacitance-resistance, bearing power can be adjusted.
Description
Technical field
The present invention relates to inverter field, and in particular to a kind of nonlinear load analogue means.
Background technology
Inverter is that direct current energy is converted into AC energy (mainly industrial frequency AC electric energy) by current transformer, with full
Foot routine electrical equipment under specific condition (such as field, have a power failure) need for electricity.
With the development of science and technology, electronic apparatus application is more and more extensive.Therefore, inverter is under many application scenarios
For power electronic equipment.However, electronic equipment is the characteristics of generally including current rectifying and wave filtering circuit, this circuit：Electric current and voltage
Not linear corresponding relation, only when supply voltage instantaneous value exceedes filtering capacitance terminal voltage, just has electric current generation, and
Current value is relevant with capacitance terminal voltage difference, line impedance with filter capacitor capacity, power end instantaneous voltage.This electric current is presented
Strong pulse characteristicses, peak value is much higher than the linear load electric current of same power, therefore this load is referred to as nonlinear load.
Electrically, the ratio between peak value and virtual value of periodic current are referred to as peak factor, generally represented with CF.
The peak point current of nonlinear load is great test to the current-carrying electrons device of inverter.Computer load
The CF values of input current typically require that inverter can provide the fan-out capability that CF values are 3 up to 2.4~2.6.If can
Higher occasion is required by property, the requirement to the electric current CF value ability to bears of inverter is higher.
Inverter is examined to the bearing capacity of current peak factor, is the work that must be completed during inverter is manufactured.
Accordingly, it would be desirable to inverter be accessed into nonlinear load, to test the bearing capacity of inverter.Existing nonlinear load is according to RCD
Breadboardin, by adjusting resistance and capacitance, to adjust bearing power and current peak factor.
However, the nonlinear load analogue means that RCD circuits are constituted, has the following disadvantages：
1st, the adjustment effect of resistance and capacitance intercouples, and makes bearing power and current peak factor not by pre-
Phase rule changes, and regulation difficulty is big.
2nd, RCD circuits constitute nonlinear load analogue means, when CF is close to 2.8, no matter increase resistor power or
Increase capacitance, it is difficult to which CF is up adjusted again.And this is for increasingly strict reliability evaluation, it is clear that be inadequate.
The content of the invention
In view of this, it is an object of the invention to provide a kind of nonlinear load analogue means, existing inverter loading is solved
In test, using the problem of regulation is difficult, current peak factor amplitude is limited during traditional RCD breadboardins.
The purpose of the present invention realized by such technical scheme, a kind of nonlinear load analogue means, including whole
Flow bridge, capacitance-resistance pairing cluster, diode cluster, DC solid-state relay cluster, insulated gate bipolar transistor and trigger control unit；
The rectifier bridge carries out full-wave rectification to the alternating current for being tested inverter output, is changed into Rectified alternating current；
The diode cluster, capacitance-resistance pairing cluster, DC solid-state relay cluster are sequentially connected to the output end of rectifier bridge；
The insulated gate bipolar transistor is connected to the point lower end in parallel of DC solid-state relay cluster, and cluster is matched to capacitance-resistance
Break-make control is carried out with the Rectified alternating current after rectification；
The trigger control unit is connected between the output end of rectifier bridge, for controlling insulated gate bipolar transistor
Turn on and off, the diode cluster includes several diodes in parallel；The capacitance-resistance pairing cluster includes quantity and diode
Identical capacitance-resistance pairing unit；The DC solid-state relay cluster includes quantity and diode identical DC solid-state relay；
Each diode pair answers a capacitance-resistance pairing unit, one DC solid-state relay of each capacitance-resistance pairing unit correspondence；Each two
The positive pole of pole pipe and the output end of rectifier bridge are connected, and negative pole is connected with the input of capacitance-resistance pairing unit, capacitance-resistance pairing unit
The positive pole connection of output end and DC solid-state relay, the negative pole of DC solid-state relay and the collection of insulated gate bipolar transistor
Electrode is connected.
Further, the capacitance-resistance pairing unit includes electric capacity and resistance, electric capacity connection in parallel with a resistor.
Further, the trigger control unit includes isolating transformer, zero passage detection module, light every, Voltage stabilizing module and list
Piece machine；The tested inverter output end of isolating transformer connection；The output end of the isolating transformer and zero passage detection module
Input connection, the zero passage detection module is connected by light every with single-chip microcomputer input；The Voltage stabilizing module is single-chip microcomputer
Power supply；The single-chip microcomputer output connects the control pole G ends of insulated gate bipolar transistor.
By adopting the above-described technical solution, the present invention has the advantage that：
The present invention can adjust current peak factor by the regulation to trigger control unit；By matching cluster to capacitance-resistance
Control, bearing power can be adjusted.Therefore, this load simulating device realizes two dimensions of current peak factor and bearing power
The regulation of degree, and it is small to intercouple, and regulating effect is expectable, and the amplitude of accommodation is higher than conventional art.
Brief description of the drawings
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into
The detailed description of one step, wherein：
Fig. 1 is schematic diagram of the invention；
Fig. 2 is the schematic diagram of trigger control unit.
Embodiment
Below with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail；It should be appreciated that preferred embodiment
Only for the explanation present invention, the protection domain being not intended to be limiting of the invention.
A kind of nonlinear load analogue means, including rectifier bridge, capacitance-resistance pairing cluster, diode cluster, DC solid-state relay,
Insulated gate bipolar transistor (IGBT) and trigger control unit.
The rectifier bridge carries out full-wave rectification to the alternating current for being tested inverter output, is changed into Rectified alternating current.
The capacitance-resistance matches cluster, including several resistance values and the paired capacitance-resistance parallel combination of capacity.Capacitance-resistance is joined
Counting the principle of matching is：1st, each group is consistent in the current peak factor of Rectified alternating current pressure work；2nd, bearing power value presses two
System aligned transfer.
The diode cluster, the diode matched comprising several quantity with capacitance-resistance parallel combination is arranged on each capacitance-resistance
The upper end of parallel combination, plays one-way isolation, it is to avoid coupled interference between each group capacitance-resistance parallel combination.
The DC solid-state relay cluster, the DC solid relay matched comprising several quantity with capacitance-resistance parallel combination
Device, is arranged on the lower end of each capacitance-resistance parallel combination, is each capacitance-resistance parallel combination to be accessed and disjunction control.
The insulated gate bipolar transistor (IGBT) is connected to the point lower end in parallel of DC solid-state relay cluster, to capacitance-resistance
Match cluster and carry out break-make control with the pulsating direct current electric energy after rectification.
The trigger control unit control IGBT is turned on and off on appropriate opportunity.
Operation principle：
AC energy from tested inverter output end, pulsating direct current electric energy is become under rectifier bridge effect；Triggering
The isolating transformer of control unit is sampled to tested inverter output AC voltage, by zero passage detection module by the mistake of voltage
Zero moment is detected, then by light every the time reference signal that zero-acrross ing moment is synchronously transmitted to single-chip microcomputer；Single-chip microcomputer is according to setting
Program, on the basis of the time of zero crossing, be delayed output control signal, control insulated gate bipolar transistor (IGBT) conducting,
Inverter is to capacitance-resistance pairing cluster charging；Pass through certain time-delay, control insulated gate bipolar transistor (IGBT) shut-off, inverter again
Stop to capacitance-resistance pairing cluster charging.Change the time delay of turn-on and turn-off, it is possible to change what capacitance-resistance charging started and stopped
Opportunity.If turning on IGBT higher than the opportunity of the current terminal voltage value of electric capacity in supply voltage instantaneous value, higher charging is had
Peak point current；If the time of conducting is very short, the pulsewidth for being tested inverter output current is very narrow, and virtual value reduces, and peak value
It is very high, thus current peak factor heightened.Change the conducting combination rule of DC solid-state relay cluster, just can change access
Capacitance-resistance parallel combination marshalling rule, so as to change bearing power.Diode cluster by each capacitance-resistance parallel combination one-way isolation,
Intercouple interference when can avoid in parallel between each group and influencing characterisitic, it is handling to improve.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, it is clear that those skilled in the art
Member can carry out various changes and modification to the present invention without departing from the spirit and scope of the present invention.So, if the present invention
These modifications and variations belong within the scope of the claims in the present invention and its equivalent technologies, then the present invention is also intended to include these
Including change and modification.
Claims (3)
1. a kind of nonlinear load analogue means, it is characterised in that：It is solid including rectifier bridge, capacitance-resistance pairing cluster, diode cluster, direct current
State relay cluster, insulated gate bipolar transistor and trigger control unit；
The rectifier bridge carries out full-wave rectification to the alternating current for being tested inverter output, is changed into Rectified alternating current；
The diode cluster, capacitance-resistance pairing cluster, DC solid-state relay cluster are sequentially connected to the output end of rectifier bridge；
The insulated gate bipolar transistor is connected to the point lower end in parallel of DC solid-state relay cluster, capacitance-resistance is matched cluster with it is whole
Rectified alternating current after stream carries out break-make control；
The trigger control unit is connected between the output end of rectifier bridge, the connection for controlling insulated gate bipolar transistor
And shut-off, the diode cluster include several diodes in parallel；It is identical with diode that the capacitance-resistance pairing cluster includes quantity
Capacitance-resistance pairing unit；The DC solid-state relay cluster includes quantity and diode identical DC solid-state relay；Each
Diode pair answers a capacitance-resistance pairing unit, one DC solid-state relay of each capacitance-resistance pairing unit correspondence；Each diode
Positive pole and the output end of rectifier bridge connect, negative pole is connected with the input of capacitance-resistance pairing unit, the output of capacitance-resistance pairing unit
End is connected with the positive pole of DC solid-state relay, the negative pole of DC solid-state relay and the colelctor electrode of insulated gate bipolar transistor
Connection.
2. a kind of nonlinear load analogue means according to claim 1, it is characterised in that：The capacitance-resistance pairing unit bag
Include electric capacity and resistance, electric capacity connection in parallel with a resistor.
3. a kind of nonlinear load analogue means according to claim 2, it is characterised in that：The trigger control unit bag
Isolating transformer, zero passage detection module, light are included every, Voltage stabilizing module and single-chip microcomputer；The tested inverter of isolating transformer connection
Output end；The output end of the isolating transformer is connected with the input of zero passage detection module, and the zero passage detection module passes through
Light is connected every with single-chip microcomputer input；The Voltage stabilizing module is powered for single-chip microcomputer；The single-chip microcomputer output connection insulated gate is double
The control pole G ends of bipolar transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710665644.6A CN107248821B (en) | 2017-08-07 | 2017-08-07 | Nonlinear load simulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710665644.6A CN107248821B (en) | 2017-08-07 | 2017-08-07 | Nonlinear load simulation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107248821A true CN107248821A (en) | 2017-10-13 |
| CN107248821B CN107248821B (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710665644.6A Active CN107248821B (en) | 2017-08-07 | 2017-08-07 | Nonlinear load simulation device |
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| CN (1) | CN107248821B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108400799A (en) * | 2018-04-18 | 2018-08-14 | 深圳市全智芯科技有限公司 | A kind of method of novel unlatching wireless pairing |
Citations (8)
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|---|---|---|---|---|
| US4042830A (en) * | 1975-11-25 | 1977-08-16 | The United States Of America As Represented By The Secretary Of The Navy | Solid state programmable dynamic load simulator |
| JP2008102050A (en) * | 2006-10-20 | 2008-05-01 | Meidensha Corp | Load testing device of pulse power supply |
| CN204405815U (en) * | 2015-02-10 | 2015-06-17 | 中国人民解放军海军航空工程学院青岛校区 | The parallel adjustable DC load of a kind of aviation highly reliable large power |
| CN104934963A (en) * | 2015-03-04 | 2015-09-23 | 王金全 | Continuous pulse non-linear load equivalent analog device |
| CN105301520A (en) * | 2015-11-24 | 2016-02-03 | 北京东方计量测试研究所 | Adjustable nonlinear load configuration system |
| CN105866704A (en) * | 2016-05-27 | 2016-08-17 | 湖南福德电气有限公司 | Special test load box for UPSs (uninterruptable power supplies) |
| CN106526505A (en) * | 2016-10-14 | 2017-03-22 | 北京东方计量测试研究所 | Method and system for testing non-linear load capacity characteristic of alternating-current voltage-stabilized source |
| CN206948208U (en) * | 2017-08-07 | 2018-01-30 | 重庆博昂科技有限公司 | A kind of adjustable nonlinear load analogue means |
-
2017
- 2017-08-07 CN CN201710665644.6A patent/CN107248821B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4042830A (en) * | 1975-11-25 | 1977-08-16 | The United States Of America As Represented By The Secretary Of The Navy | Solid state programmable dynamic load simulator |
| JP2008102050A (en) * | 2006-10-20 | 2008-05-01 | Meidensha Corp | Load testing device of pulse power supply |
| CN204405815U (en) * | 2015-02-10 | 2015-06-17 | 中国人民解放军海军航空工程学院青岛校区 | The parallel adjustable DC load of a kind of aviation highly reliable large power |
| CN104934963A (en) * | 2015-03-04 | 2015-09-23 | 王金全 | Continuous pulse non-linear load equivalent analog device |
| CN105301520A (en) * | 2015-11-24 | 2016-02-03 | 北京东方计量测试研究所 | Adjustable nonlinear load configuration system |
| CN105866704A (en) * | 2016-05-27 | 2016-08-17 | 湖南福德电气有限公司 | Special test load box for UPSs (uninterruptable power supplies) |
| CN106526505A (en) * | 2016-10-14 | 2017-03-22 | 北京东方计量测试研究所 | Method and system for testing non-linear load capacity characteristic of alternating-current voltage-stabilized source |
| CN206948208U (en) * | 2017-08-07 | 2018-01-30 | 重庆博昂科技有限公司 | A kind of adjustable nonlinear load analogue means |
Non-Patent Citations (2)
| Title |
|---|
| M REFORMAT: "Non-linear load modeling for simulations in time domain", 《IEEE》 * |
| 马坤: "能馈型交流三相电力电子负载的设计与研究", 《中国优秀硕士论文电子期刊网》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108400799A (en) * | 2018-04-18 | 2018-08-14 | 深圳市全智芯科技有限公司 | A kind of method of novel unlatching wireless pairing |
| CN108400799B (en) * | 2018-04-18 | 2024-02-13 | 深圳市全智芯科技有限公司 | Novel method for starting wireless pairing |
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| Publication number | Publication date |
|---|---|
| CN107248821B (en) | 2023-04-18 |
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