CN208015609U - A kind of high-power AC-DC continuous-current plants and test device - Google Patents
A kind of high-power AC-DC continuous-current plants and test device Download PDFInfo
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- CN208015609U CN208015609U CN201721482154.4U CN201721482154U CN208015609U CN 208015609 U CN208015609 U CN 208015609U CN 201721482154 U CN201721482154 U CN 201721482154U CN 208015609 U CN208015609 U CN 208015609U
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Abstract
The utility model discloses a kind of high-power AC-DC continuous-current plants and test device, high-power AC-DC continuous-current plants include：Isolation circuit, filter circuit, the first converter, the second converter；Described isolation circuit one end connects the three-phase AC grid output end, and the other end connects the filter circuit, the high-frequency harmonic for the generation of three-phase AC grid output end to be isolated, and carries out transformation to three-phase alternating current and obtain transformation alternating current；The filter circuit connects first converter, and the transformation alternating current harmonic wave for being exported to the isolation circuit carries out inhibition compensation；First converter connects second converter, for the transformation alternating current to be converted to direct current；The DC power conversion that second converter is used to export in first converter is straight-adjustable galvanic electricity.The AC-DC continuous-current plants and test device that the utility model carries can reduce system bulk, compared with prior art it is at low cost, test is simple, reliability and safety is high.
Description
Technical field
The utility model belongs to electric power network technical field, and in particular to a kind of power AC-DC continuous-current plants and survey
Trial assembly is set.
Background technology
Fundamental way of the electric vehicle as the breach and realization transportation and energy transition of the economic growth of a new round,
As the strategic choice of the common strategic choice and various countries' automobile market of each major country of the world and automobile manufacturing company.
Under the promotion energetically of national governments, world car industry entry period of comprehensive transportation and energy transition, electric vehicle into
The new stage of accelerated development is entered.Now, more experts and more enterprises are consciously development new-energy automobile, section
Target of the automobile, electric vehicle of energy environmental protection as Future Development, this is a main trend.Under this main trend, electric vehicle
Battery in the fabrication process, charging pile, the equipment such as motor just need AC-DC DC power supplies to be tested.How to increase simultaneously
It is the problem of domestic manufacturerss are thought deeply to manufacture AC-DC continuous-current plants, and the delivery test of AC-DC continuous-current plants
It is capable of the performance of effective detection device, effective pilot project can improve the reliability and stability of equipment, can not only give
The application offer reference data of special occasions, while also ensureing that primary put into operation when equipment reaches curstomer's site is successfully transported with stable
Row.
Direct current is generally rectified into simulate by rectifier bridge using AC voltage regulator in the test method generally used at present
Practical frequency changer direct current bus voltage controls a motor using two frequency converters and carries out to dragging a wherein motor respectively
In motoring condition, other one is in generating state, but there are one common features for high-power AC-DC continuous-current plants
It is exactly that single-machine capacity is big, rated current is high, either can all be existed using any in above-mentioned test method makes test system
Bulky, cost it is high, while higher requirements are also raised to the power supply capacity of system.
Utility model content
In order to solve the above-mentioned problems in the prior art, the utility model, which provides one kind, can reduce system body
Power AC-DC continuous-current plants and test device long-pending, at low cost, test is simple, reliability and safety is high.
One embodiment of the utility model provides a kind of high-power AC-DC continuous-current plants, including：Isolation electricity
Road, filter circuit, the first converter, the second converter；
Described isolation circuit one end connects the three-phase AC grid output end, and the other end connects the filter circuit, uses
In the high-frequency harmonic that isolation three-phase AC grid output end generates, and transformation is carried out to three-phase alternating current and obtains transformation alternating current；
The filter circuit connects first converter, the transformation alternating current harmonic wave for being exported to the isolation circuit
Carry out inhibition compensation；
First converter connects second converter, for the transformation alternating current to be converted to direct current；
The DC power conversion that second converter is used to export in first converter is straight-adjustable galvanic electricity.
Further, first converter is AC-DC converter, and second converter is DC-DC converter.
Further, the isolation circuit includes sequentially connected breaker, first contactor, transformer；It is each described
Breaker is correspondingly connected with one in the three-phase AC grid three-phase output end, and each first contactor is correspondingly connected with one
A breaker, the transformer are three-phase transformer, and the three-phase alternating current to being input to the transformer carries out transformation and obtains
To transformation alternating current.
Further, the filter circuit includes sequentially connected three-phase filter capacitor, second contactor, inductance, first
IGBT rectification circuit；The three-phase filter capacitor connects by described in three tunnels second respectively after being filtered to the transformation alternating current
Inductance described in tentaculum, three tunnels is output to first IGBT rectification circuit, and first IGBT rectification circuit hands over the transformation
Galvanic electricity rectification is that direct current is exported.
Further, second converter includes sequentially connected second IGBT rectification circuit, LC filter circuits；Institute
It is straight-adjustable galvanic electricity to the direct current rectifying conversion that first IGBT rectification circuit exports to state the second IGBT rectification circuit, described
LC filter circuits after the adjustable DC electrofiltration wave to exporting.
The utility model provides a kind of high-power AC-DC continuous-current plants test device, including two such as this reality simultaneously
With the novel continuous-current plant, it is defeated that the ac input ends of two continuous-current plants is all connected with three-phase AC grid
The DC output end of outlet, two continuous-current plants is parallel with one another.
The high-power AC-DC continuous-current plants and test device of the utility model are applied to low pressure 380V systems, and
The wide fluctuations of power grid do not interfere with entire power-supply system, to the applied widely of power-supply system, hold to the power supply of system
Amount requires relatively low, and system power supply capacity may diminish within 10KVA, this will greatly reduce the construction cost of power-supply system.Using
Two AC-DC continuous-current plants carry out the test to dragging, and are a kind of energy-efficient test methods, can significantly reduce survey
Examination expense.It is simple and practical, the three-phase regulator of large capacity is not needed, while not needing the Frequency Converter Control electricity of two large capacities yet
Machine to dragging system, this will largely reduce system volume and cost.And there is failure interlock function, it tested
As long as long as either any table apparatus of test device or tested device breaks down and all can make two table apparatus simultaneously in journey
Escape is out of service, increases the reliability and security of system testing.
Description of the drawings
Fig. 1 is a kind of high-power AC-DC continuous-current plants module frame chart that the utility model embodiment provides；
Fig. 2 is a kind of high-power AC-DC continuous-current plants isolates circuit diagram that the utility model embodiment provides；
Fig. 3 is a kind of high-power AC-DC continuous-current plants filter circuit figure that the utility model embodiment provides；
Fig. 4 is a kind of high-power AC-DC continuous-current plants converter circuit figure that the utility model embodiment provides；
Fig. 5 is a kind of high-power AC-DC DC power supplies test principle figure that the utility model embodiment provides；
Fig. 6 is that a kind of high-power AC-DC DC power supplies that the utility model embodiment provides test system capacity flowing
Direction schematic diagram.
Specific implementation mode
The utility model is described in further detail With reference to embodiment.But this should not be interpreted as to this
The range of the above-mentioned theme of utility model is only limitted to embodiment below, and all technologies realized based on the utility model content are belonged to
In the scope of the utility model.
Embodiment one
Fig. 1 is a kind of high-power AC-DC continuous-current plants module frame chart that the utility model embodiment provides, including：
Isolation circuit, filter circuit, the first converter, the second converter；
Described isolation circuit one end connects the three-phase AC grid output end, and the other end connects the filter circuit, uses
In the high-frequency harmonic that isolation three-phase AC grid output end generates, and transformation is carried out to three-phase alternating current and obtains transformation alternating current；
The filter circuit connects first converter, the transformation alternating current harmonic wave for being exported to the isolation circuit
Carry out inhibition compensation；
First converter connects second converter, for the transformation alternating current to be converted to direct current；
The DC power conversion that second converter is used to export in first converter is straight-adjustable galvanic electricity.Specifically
, first converter is AC-DC converter, and second converter is DC-DC converters.
In a specific embodiment, referring to Fig. 2, the isolation circuit includes sequentially connected circuit breaker Q F1, first
Contactor KM1, transformer T1；Each circuit breaker Q F1 is correspondingly connected in described three-phase AC grid three-phase output end A, B, C
One, each first contactor KM1 is correspondingly connected with a circuit breaker Q F1, and the transformer T1 is three phase-change pressures
Device, the three-phase alternating current to being input to the transformer carry out transformation and obtain transformation alternating current.
In a specific embodiment, referring to Fig. 3, the filter circuit includes sequentially connected three-phase filter capacitor
CC01, second contactor KM3, inductance L2, the first IGBT rectification circuit；The three-phase filter capacitor to the transformation alternating current into
First IGBT rectification circuit, institute are output to by inductance described in second contactor, three tunnels described in three tunnels respectively after row filtering
It is that direct current exports that the first IGBT rectification circuit, which is stated, by the transformation AC rectification.
In a specific embodiment, referring to Fig. 4, second converter includes sequentially connected 2nd IGBT rectifications
Circuit, LC filter circuits；Second IGBT rectification circuit becomes the direct current electric rectification that the first IGBT rectification circuits export
It is changed to straight-adjustable galvanic electricity, the LC filter circuits after the adjustable DC electrofiltration wave to exporting.
The utility model provides a kind of high-power AC-DC continuous-current plants test device simultaneously, referring to Fig. 5, including two
A such as continuous-current plant described in the utility model, the ac input end of two continuous-current plants are all connected with three intersections
Galvanic electricity net output end, the DC output end of two continuous-current plants are parallel with one another.
In the specific implementation, electricity will be connected to after the ac input end parallel connection of X2 (tested device) and X3 (test device)
Net, then DC terminal is together in parallel, it just completes and mutually the circuit dragged is connected；Secondly it is exactly to test system electrification to entire,
Starting device later, test device and tested device will give respective DC bus side and electricity by charge circuit after startup
Electrolytic capacitor charging on the outlet side of source, when the DC bus side and power supply outlet side voltage value for being charged to setting, passes through control
The actuation of contactor processed makes charge circuit disconnect, major loop conducting, then entire test system startup finishes；The dress of setting test later
It sets and the measured power value and electric current of tested device, voltage parameter, operation X2 (tested device), when X2 (tested device) direct current
When the voltage of outlet side is higher than the setting value of X3 (test device), the X3 that reruns (test device), this completes entire systems
System is started and run, and test system equipment is made to realize that the power of test device and tested device liquidates.But it to note herein
Meaning, X2 (tested device) will first be started by starting and running, because X3 (test device) will be to power grid feedback energy, X3
The power supply of the electrolytic capacitor charging of (test device) DC output end is the DC output end from X2 (tested device).This is surveyed
Test system has the interlocking function of failure, as long as either any table apparatus of test device or tested device in test process
Break down can all make two table apparatus simultaneously escape it is out of service, so that the reliability of system and safety is greatly increased.
The direction of its energy flow is as shown in fig. 6, after tested device and test device behave after operation, X2
(tested device) is equivalent to a DC power supply at this time, exports electric energy outward and is in charged state；And X3 (test device) for
X2 (tested device) is equivalent to a load, its own is in discharge mode, and the direct current of X2 (tested device) outputs is converted
For three-phase alternating current, electric energy is provided for X2 (tested device)；Thus make between X2 (tested device) and X3 (test device)
Energy circulation flows, and forms energy circulation, and the electric energy that power grid is consumed at this time is the internal loss of entire test device system,
And its loss value is less than the 5% of whole system, therefore the capacity of system power supply can be made very low.
The utility model test method and the principle of device are the AC-DC continuous-current plants one using two equivalent capabilities
Platform is used as tested device for another as test device, specifically sets test device therein to accompany survey pattern, Ling Yitai
Tested device is set as tested pattern.Two table apparatus are carried out, to dragging, to realize two covering device power to mending.With traditional test side
Method is compared with device, can greatly reduce the volume and cost of system, while this is also a kind of effective energy-saving test method, can
The capacity of system power supply is made very low, the construction cost of power-supply system can be effectively reduced.
The high-power AC-DC continuous-current plants and test device of the utility model are applied to low pressure 380V systems, and
The wide fluctuations of power grid do not interfere with entire power-supply system, to the applied widely of power-supply system, hold to the power supply of system
Amount requires relatively low, and system power supply capacity may diminish within 10KVA, this will greatly reduce the construction cost of power-supply system.Using
Two AC-DC continuous-current plants carry out the test to dragging, and are a kind of energy-efficient test methods, can significantly reduce survey
Examination expense.It is simple and practical, the three-phase regulator of large capacity is not needed, while not needing the Frequency Converter Control electricity of two large capacities yet
Machine to dragging system, this will largely reduce system volume and cost.And there is failure interlock function, it tested
As long as long as either any table apparatus of test device or tested device breaks down and all can make two table apparatus simultaneously in journey
Escape is out of service, increases the reliability and security of system testing.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：
It still can be with technical scheme described in the above embodiments is modified, or is carried out to which part technical characteristic etc.
With replacement；And these modifications or replacements, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (6)
1. a kind of high-power AC-DC continuous-current plants, which is characterized in that including：Isolation circuit, filter circuit, the first transformation
Device, the second converter；
Described isolation circuit one end connects three-phase AC grid output end, and the other end connects the filter circuit, for being isolated three
The high-frequency harmonic that phase AC network output end generates, and transformation is carried out to three-phase alternating current and obtains transformation alternating current；
The filter circuit connects first converter, and the transformation alternating current harmonic wave for being exported to the isolation circuit carries out
Inhibit compensation；
First converter connects second converter, for the transformation alternating current to be converted to direct current；
The DC power conversion that second converter is used to export in first converter is straight-adjustable galvanic electricity.
2. high-power AC-DC continuous-current plants according to claim 1, which is characterized in that first converter is
AC-DC converter, second converter are DC-DC converter.
3. high-power AC-DC continuous-current plants according to claim 1, which is characterized in that the isolation circuit includes
Sequentially connected breaker, first contactor, transformer；Each breaker is correspondingly connected with the three-phase AC grid three-phase
One in output end, each first contactor is correspondingly connected with a breaker, and the transformer is three phase-change pressures
Device, the three-phase alternating current to being input to the transformer carry out transformation and obtain transformation alternating current.
4. high-power AC-DC continuous-current plants according to claim 3, which is characterized in that the filter circuit includes
Sequentially connected three-phase filter capacitor, second contactor, inductance, the first IGBT rectification circuit；The three-phase filter capacitor is to institute
It states and is output to described first by inductance described in second contactor, three tunnels described in three tunnels respectively after transformation alternating current is filtered
The transformation AC rectification is that direct current exports by IGBT rectification circuit, first IGBT rectification circuit.
5. high-power AC-DC continuous-current plants according to claim 4, which is characterized in that the second converter packet
Include sequentially connected second IGBT rectification circuit, LC filter circuits；Second IGBT rectification circuit is whole to the first IGBT
The direct current rectifying conversion of current circuit output is straight-adjustable galvanic electricity, and the LC filter circuits are to defeated after the adjustable DC electrofiltration wave
Go out.
6. a kind of high-power AC-DC continuous-current plants test device, including two DC power supply dresses as claimed in claim 5
It sets, the ac input end of two continuous-current plants is all connected with three-phase AC grid output end, two DC power supplies
The DC output end of device is parallel with one another.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721482154.4U CN208015609U (en) | 2017-11-09 | 2017-11-09 | A kind of high-power AC-DC continuous-current plants and test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721482154.4U CN208015609U (en) | 2017-11-09 | 2017-11-09 | A kind of high-power AC-DC continuous-current plants and test device |
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| Publication Number | Publication Date |
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| CN208015609U true CN208015609U (en) | 2018-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721482154.4U Expired - Fee Related CN208015609U (en) | 2017-11-09 | 2017-11-09 | A kind of high-power AC-DC continuous-current plants and test device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113900036A (en) * | 2021-10-08 | 2022-01-07 | 西安兆福电子有限公司 | AC-DC high-voltage high-power supply test system |
| CN116184082A (en) * | 2023-02-10 | 2023-05-30 | 青岛鼎信通讯科技有限公司 | Opposite-dragging test platform and test method for AC/DC micro-grid converter |
-
2017
- 2017-11-09 CN CN201721482154.4U patent/CN208015609U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113900036A (en) * | 2021-10-08 | 2022-01-07 | 西安兆福电子有限公司 | AC-DC high-voltage high-power supply test system |
| CN116184082A (en) * | 2023-02-10 | 2023-05-30 | 青岛鼎信通讯科技有限公司 | Opposite-dragging test platform and test method for AC/DC micro-grid converter |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181026 Termination date: 20211109 |