CN206743142U - Brushless dual-feed motor arrangements for speed regulation with three full-control type current transformers - Google Patents
Brushless dual-feed motor arrangements for speed regulation with three full-control type current transformers Download PDFInfo
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- CN206743142U CN206743142U CN201720558995.2U CN201720558995U CN206743142U CN 206743142 U CN206743142 U CN 206743142U CN 201720558995 U CN201720558995 U CN 201720558995U CN 206743142 U CN206743142 U CN 206743142U
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Abstract
The brushless dual-feed motor arrangements for speed regulation with three full-control type current transformers provided by the utility model, including first and second three-phase alternating-current supply, the first to the 3rd full-control type current transformer, three pole reactor, dc-link capacitance and brushless dual-feed motor and the mechanical load being connected with the brushless dual-feed motor rotating shaft, and five three-phase alternating-current switchs and three dc switch.There is the utility model the advantages of brushless dual-feed motor arrangements for speed regulation of three full-control type current transformers to be：Because there is provided five three-phase alternating-current switchs, three dc switch and three full-control type current transformers, when any current transformer breaks down, complete speed-adjusting and control system is formed by another two current transformer, realize the high reliability that in supersynchronous and metasynchronism state normal operation, improves and ensure that brushless dual-feed motor operation.The governing system also has cost advantage, contributes to application of the brushless dual-feed motor governing system in mesohigh AC speed regulating field.
Description
Technical field
It the utility model is related to motor speed regulation system field, and in particular to a kind of that there is the brushless of three full-control type current transformers
Double-fed motor speed adjusting device.
Background technology
Because the maintenance issues of brush and slip ring are not present in brushless dual-feed motor so that its working life is more than supporting with it
Three-phase fully-controlled type PWM converter long working life.But once a certain power device breaks down in current transformer, system must
Sudden shutdown so occurs, huge economic loss will be caused, is difficult to realize the high reliability operation of governing system.In order to solve
This problem, patent document ZL 201410382239.X (the redundancy-type four-quadrant brushless dual-feed motor speed governing systems that can be taken over seamlessly
System) use 4 Three-Phase PWM Rectifiers to form redundancy-type four-quadrant brushless dual-feed motor governing systems, it is relative to improve reliability,
But having significant increase in cost, this is unfavorable for promoting brushless dual-feed motor governing system in mesohigh AC speed regulating field
Application.The patent document ZL 201510808905.6 redundancy-type brushless dual-feed motor governing system of flexible operation (can) passes through
Using three-phase fully-controlled type PWM converter, three-phase can not control rectifier, alternating-current switch and dc switch form there is redundancy structure
Converter plant, when solving three-phase fully-controlled type PWM the first full-control type current transformers or the second full-control type current transformer and damaging, motor is sub-
The problem of synchronous variable-speed, but three-phase fully-controlled type PWM the first full-control type current transformers or the damage of the second full-control type current transformer can not be realized
When, the problem of motor supersynchronous operation.
Utility model content
In view of the defects of above-mentioned prior art, the purpose of this utility model is that providing one kind has three full-control type unsteady flows
The brushless dual-feed motor arrangements for speed regulation of device, when any current transformer breaks down, it can be made up of another two current transformer completely
Speed-adjusting and control system, realize in supersynchronous and metasynchronism state normal operation, further improve and ensure brushless dual-feed motor
Reliability of operation.Meanwhile the governing system is also beneficial to brushless dual-feed motor governing system with cost advantage and exchanged in mesohigh
The application in speed governing field.
For the above-mentioned purpose, a kind of brushless dual-feed motor speed governing dress with three full-control type current transformers of the utility model
Put, including the first three-phase alternating-current supply, the second three-phase alternating-current supply, the first full-control type current transformer, the second full-control type current transformer and
Brushless dual-feed motor and the mechanical load being connected with the brushless dual-feed motor rotating shaft, in addition to five three-phase alternating-current switchs, three
Dc switch and the 3rd full-control type current transformer, wherein：First three-phase alternating-current supply, the first three-phase alternating-current switch and brushless pair
Split-phase is connected in series the power winding of generating aid successively, second three-phase alternating-current supply, the second three-phase alternating-current switch and first
Split-phase is connected in series the AC of full-control type current transformer successively, second three-phase alternating-current supply, the 3rd three-phase alternating-current switch with
Split-phase is connected in series the AC of 3rd full-control type current transformer successively, and second three-phase alternating-current supply, the 3rd three-phase alternating current are opened
Split-phase is connected in series the controling winding of pass, the 4th three-phase alternating-current switch and brushless dual-feed motor successively, and first full-control type becomes
Flow the DC side high voltage end, the first dc switch, the high electricity of the DC side of the second dc switch and the second full-control type current transformer of device
Pressure side is sequentially connected in series, AC, the 5th three-phase alternating-current switch and the brushless dual-feed motor of the second full-control type current transformer
Controling winding split-phase is connected in series successively, the DC side high voltage end and the 3rd dc switch of the 3rd full-control type current transformer
It is connected in series and is connected with the series connection node of the first dc switch and the second dc switch, three each DC sides of full-control type current transformer
Low-voltage end is connected to reference ground line end.
The utility model has a brushless dual-feed motor arrangements for speed regulation of three full-control type current transformers, in addition to three pole reactor and
Dc-link capacitance, wherein split-phase is connected to the second three-phase alternating-current supply and the second three-phase alternating-current switch to the three pole reactor successively
Between the public input of two three-phase alternating-current switchs of the 3rd three-phase alternating-current switch, the dc-link capacitance is connected to first
Between dc switch and the series connection node and reference ground line end of the second dc switch.
The utility model has the brushless dual-feed motor arrangements for speed regulation of three full-control type current transformers, wherein first exchange
Power supply and the second AC power are identical AC power.
The utility model has the brushless dual-feed motor arrangements for speed regulation of three full-control type current transformers, wherein first exchange
Power supply and the second AC power are the AC power differed.
The utility model has the advantages of brushless dual-feed motor arrangements for speed regulation of three full-control type current transformers and good effect
It is：Due to there is provided five three-phase alternating-current switchs, three dc switch and the 3rd full-control type current transformer, composition it is brushless double-fed
During any current transformer failure, it is same in supersynchronous and Asia to realize governing system in three full-control type current transformers for machine governing system
The normal operation of step state, further improve and ensure that the high reliability of brushless dual-feed motor operation.Meanwhile the governing system
Also there is cost advantage, contribute to application of the brushless dual-feed motor governing system in mesohigh AC speed regulating field.
Brief description of the drawings
Fig. 1 is the circuit structure for the brushless dual-feed motor arrangements for speed regulation that the utility model has three full-control type current transformers
Figure.
Embodiment
To make the purpose of this utility model, technical scheme and effect clearer, clear and definite, with reference to referring to the drawings to this
Brushless dual-feed motor arrangements for speed regulation of the utility model with three full-control type current transformers are further described in utility model
Embodiment.It should be appreciated that specific embodiment described herein is not used to limit this practicality only to explain the utility model
It is new.
Reference picture 1, the utility model have the brushless dual-feed motor arrangements for speed regulation of three full-control type current transformers, including first
Three-phase alternating-current supply 1, the second three-phase alternating-current supply 2, the first full-control type current transformer 3, the second control entirely of full-control type current transformer the 4, the 3rd
Type current transformer 5, three pole reactor L1, dc-link capacitance C and brushless dual-feed motor 7 and it is connected with the brushless dual-feed motor rotating shaft
Mechanical load, and five three-phase alternating-current switch K1-K5 and three dc switch K6-K8, wherein：First three-phase alternating-current supply 1,
Split-phase is connected in series the power winding of first three-phase alternating-current switch K1 and brushless dual-feed motor successively.Second three-phase alternating-current supply 2,
Split-phase is connected in series the AC of second three-phase alternating-current switch K2 and the first full-control type current transformer 3 successively.Second three-phase alternating current
Source 2, split-phase is connected in series the AC of the 3rd three-phase alternating-current switch K3 and the 3rd full-control type current transformer 5 successively.Two or three is intersecting
Flow the controling winding split-phase successively of power supply 2, the 3rd three-phase alternating-current switch K3, the 4th three-phase alternating-current switch K4 and brushless dual-feed motor
It is connected in series.The DC side high voltage end of first full-control type current transformer 3, the first dc switch K6, the second dc switch K7 and
The DC side high voltage end of two full-control type current transformers 4 is sequentially connected in series, the AC of the second full-control type current transformer 4, the five or three
Split-phase is connected in series the controling winding of phase alternating-current switch K5 and brushless dual-feed motor successively.The direct current of 3rd full-control type current transformer 5
Side high voltage end and the 3rd dc switch K8 be connected in series and with the first dc switch K6 and the second dc switch K7 tandem junction
Point is connected, and three full-control type current transformers 3,4,5 each DC side low-voltage ends are connected to reference ground line end.Three pole reactor L1 according to
Secondary split-phase is connected to two three-phases of the second three-phase alternating-current supply 2 and the second three-phase alternating-current switch K2 and the 3rd three-phase alternating-current switch K3
Between the public input of alternating-current switch, the dc-link capacitance C is connected to the first dc switch K6 and the second dc switch
Between K7 series connection node and reference ground line end.
In the utility model has the different embodiment of the brushless dual-feed motor arrangements for speed regulation of three full-control type current transformers,
First three-phase alternating-current supply 1 and the second three-phase alternating-current supply 2 can be identical three-phase alternating-current supply, or differ
Three-phase alternating-current supply.
The utility model has the brushless dual-feed motor arrangements for speed regulation of three full-control type current transformers, the control method bag of use
Include：
1) when governing system operates in four-quadrant state, the 3rd three-phase alternating-current switch K3, the 4th three-phase alternating current are first disconnected
K4 and the 3rd dc switch K8 is switched, is closed again the first three-phase alternating-current switch K1, the second three-phase alternating-current switch K2, the five or three intersecting
Stream switch K5, the first dc switch K6 and the second dc switch K7, by the three pole reactor L1, the first full-control type current transformer 3, straight
Flow bus capacitor C and the second full-control type current transformer 4 forms the converter system of brushless dual-feed motor 7；
2) when the first full-control type current transformer 3 breaks down, first disconnect the second three-phase alternating-current switch K2 and the first direct current is opened
K6 is closed, the 3rd three-phase alternating-current switch K3 and the 3rd dc switch K8 is closed again, by the three pole reactor L1, the 3rd full-control type unsteady flow
Device 5, dc-link capacitance C and the second full-control type current transformer 4 form the converter system of brushless dual-feed motor 7；
3) when the second full-control type current transformer 4 breaks down, first disconnect the 5th three-phase alternating-current switch K5 and the second direct current is opened
K7 is closed, the 4th three-phase alternating-current switch K4 and the 3rd dc switch K8 is closed again, by the three pole reactor L1, the first full-control type unsteady flow
Device 3, dc-link capacitance C and the 3rd full-control type current transformer 5 form the converter system of brushless dual-feed motor 7.
Embodiment described above is only that preferred embodiment of the present utility model is described, not to this practicality
New spirit and scope are defined.On the premise of the utility model design conception is not departed from, ordinary people in the field couple
The all variations and modifications that the technical solution of the utility model is made, the scope of protection of the utility model, this reality all should be dropped into
With new claimed technology contents, all record in detail in the claims.
Claims (4)
1. a kind of brushless dual-feed motor arrangements for speed regulation with three full-control type current transformers, including the first three-phase alternating-current supply (1),
Second three-phase alternating-current supply (2), the first full-control type current transformer (3), the second full-control type current transformer (4) and brushless dual-feed motor (7)
And the mechanical load being connected with the brushless dual-feed motor rotating shaft, it is characterised in that：Also include five three-phase alternating-current switch (K1-
K5), three dc switch (K6-K8) and the 3rd full-control type current transformer (5), wherein：First three-phase alternating-current supply (1),
Split-phase is connected in series the power winding of one three-phase alternating-current switch (K1) and the brushless dual-feed motor successively, and the described 2nd 3 is intersecting
Stream power supply (2), the AC of the second three-phase alternating-current switch (K2) and the first full-control type current transformer (3) successively connect company by split-phase
Connect, second three-phase alternating-current supply (2), the AC of the 3rd three-phase alternating-current switch (K3) and the 3rd full-control type current transformer (5)
Split-phase is connected in series successively, and second three-phase alternating-current supply (2), the 3rd three-phase alternating-current switch (K3), the 4th three-phase alternating current are opened
Closing the controling winding of (K4) and the brushless dual-feed motor, split-phase is connected in series successively, the first full-control type current transformer (3)
DC side high voltage end, the first dc switch (K6), the second dc switch (K7) are straight with the second full-control type current transformer (4)
Stream side high voltage end is sequentially connected in series, AC, the 5th three-phase alternating-current switch (K5) of the second full-control type current transformer (4)
Split-phase is connected in series successively with the controling winding of the brushless dual-feed motor, the DC side of the 3rd full-control type current transformer (5)
High voltage end and the 3rd dc switch (K8) be connected in series and with first dc switch (K6) and the second dc switch
(K7) series connection node is connected, and each DC side low-voltage end of three full-control type current transformers (3,4,5) is connected to reference
Ground terminal.
2. the brushless dual-feed motor arrangements for speed regulation with three full-control type current transformers according to claim 1, its feature exist
In：Also include three pole reactor (L1) and dc-link capacitance (C), wherein the three pole reactor (L1) successively split-phase be connected to it is described
Second three-phase alternating-current supply (2) intersects with second three-phase alternating-current switch (K2) and the 3rd three-phase alternating-current switch (K3) two three
Between the public input for flowing switch, the dc-link capacitance (C) is connected to first dc switch (K6) and second straight
Between the series connection node and the reference ground line end of stream switch (K7).
3. the brushless dual-feed motor arrangements for speed regulation with three full-control type current transformers according to claim 2, its feature exist
In：Wherein described first three-phase alternating-current supply (1) and second three-phase alternating-current supply (2) are identical three-phase alternating-current supply.
4. the brushless dual-feed motor arrangements for speed regulation with three full-control type current transformers according to claim 2, its feature exist
In：Wherein described first three-phase alternating-current supply (1) and second three-phase alternating-current supply (2) are the three-phase alternating current differed
Source.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720558995.2U CN206743142U (en) | 2017-05-19 | 2017-05-19 | Brushless dual-feed motor arrangements for speed regulation with three full-control type current transformers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720558995.2U CN206743142U (en) | 2017-05-19 | 2017-05-19 | Brushless dual-feed motor arrangements for speed regulation with three full-control type current transformers |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107093964A (en) * | 2017-05-19 | 2017-08-25 | 广东上水能源科技有限公司 | Brushless dual-feed motor arrangements for speed regulation and method with three full-control type current transformers |
| CN108777547A (en) * | 2018-05-28 | 2018-11-09 | 东南大学 | A kind of friendship-friendship power inverter of no DC bus energy-storage travelling wave tube |
-
2017
- 2017-05-19 CN CN201720558995.2U patent/CN206743142U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107093964A (en) * | 2017-05-19 | 2017-08-25 | 广东上水能源科技有限公司 | Brushless dual-feed motor arrangements for speed regulation and method with three full-control type current transformers |
| CN107093964B (en) * | 2017-05-19 | 2023-11-03 | 广东上水能源科技有限公司 | Brushless double-fed motor speed regulating device with three full-control converters and method |
| CN108777547A (en) * | 2018-05-28 | 2018-11-09 | 东南大学 | A kind of friendship-friendship power inverter of no DC bus energy-storage travelling wave tube |
| CN108777547B (en) * | 2018-05-28 | 2019-10-11 | 东南大学 | A kind of friendship-friendship power inverter of no DC bus energy-storage travelling wave tube |
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Effective date of registration: 20231107 Address after: Q1181, Room 103, No. 137 Heguang Road, Tianhe District, Guangzhou City, Guangdong Province, 510000 Patentee after: Guangzhou Yizhi Environmental Protection Technology Co.,Ltd. Address before: Room G315, 201 Kezhu Road, Science City, Guangzhou Economic and Technological Development Zone, Guangdong Province, 510663 Patentee before: GUANGDONG SHANGSHUI ENERGY TECHNOLOGY Co.,Ltd. |
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