CN206743141U - A kind of brushless dual-feed motor arrangements for speed regulation of high reliability - Google Patents
A kind of brushless dual-feed motor arrangements for speed regulation of high reliability Download PDFInfo
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- CN206743141U CN206743141U CN201720558897.9U CN201720558897U CN206743141U CN 206743141 U CN206743141 U CN 206743141U CN 201720558897 U CN201720558897 U CN 201720558897U CN 206743141 U CN206743141 U CN 206743141U
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Abstract
The brushless dual-feed motor arrangements for speed regulation of high reliability provided by the utility model, including first and second three-phase alternating-current supply, first and second 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 uncontrollable current transformer, seven three-phase alternating-current switchs and three dc switch.The advantages of brushless dual-feed motor arrangements for speed regulation of the utility model high reliability is：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 brushless dual-feed motor speed governing of high reliability
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, the brushless dual-feed motor arrangements for speed regulation of a kind of high reliability of the utility model, including the one or three
Cross streams power 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 seven three-phase alternating-current switchs, three dc switch and can not
Current transformer is controlled, wherein：The power winding of first three-phase alternating-current supply, the first three-phase alternating-current switch and brushless dual-feed motor according to
Secondary split-phase is connected in series, and second three-phase alternating-current supply, the second three-phase alternating-current switch exchange with the first full-control type current transformer
Split-phase is connected in series successively for side, and second three-phase alternating-current supply, the 3rd three-phase alternating-current switch exchange with uncontrollable current transformer 5
Split-phase is connected in series successively for side, second three-phase alternating-current supply, the 3rd three-phase alternating-current switch, the 4th three-phase alternating-current switch and nothing
Split-phase is connected in series the controling winding of brush double feedback electric engine successively, second three-phase alternating-current supply and the 7th three-phase alternating-current switch according to
Secondary split-phase is connected in series and split-phase is connected in parallel successively with the AC of the second full-control type current transformer, the first full-control type unsteady flow
Split-phase is connected in series the controling winding of the AC of device, the 6th three-phase alternating-current switch and brushless dual-feed motor successively, and described first
DC side high voltage end, the first dc switch, the second dc switch of full-control type current transformer are straight with the second full-control type current transformer
Stream side high voltage end is sequentially connected in series, the AC of the second full-control type current transformer, the 5th three-phase alternating-current switch with it is brushless
Split-phase is connected in series the controling winding of double feedback electric engine successively, the DC side high voltage end and the 3rd direct current of the uncontrollable current transformer
Switch is connected in series and is connected with the series connection node of the first dc switch and the second dc switch, two full-control type current transformers and not
Each DC side low-voltage end of controllable current transformer is connected to reference ground line end.
The brushless dual-feed motor arrangements for speed regulation of the utility model high reliability, in addition to three pole reactor and dc bus electricity
Hold, wherein split-phase is connected to the second three-phase alternating-current supply and the second three-phase alternating-current switch, the 3rd three-phase to the three pole reactor successively
Between the public input of three three-phase alternating-current switchs of alternating-current switch and the 7th three-phase alternating-current switch, the dc-link capacitance connects
It is connected between the first dc switch and the series connection node and reference ground line end of the second dc switch.
The brushless dual-feed motor arrangements for speed regulation of the utility model high reliability, wherein first three-phase alternating-current supply and
Two three-phase alternating-current supplies are identical three-phase alternating-current supply.
The brushless dual-feed motor arrangements for speed regulation of the utility model high reliability, wherein first three-phase alternating-current supply and
Two three-phase alternating-current supplies are the three-phase alternating-current supply differed.
The advantages of brushless dual-feed motor arrangements for speed regulation of the utility model high reliability and good effect are：Due to there is provided
Seven three-phase alternating-current switchs, three dc switch, two full-control type current transformers and a uncontrollable current transformer, the brushless double feed of composition
Motor speed regulation system during any current transformer failure, realizes governing system in supersynchronous and metasynchronism in three current transformers
The normal operation of state, further improve and ensure that the high reliability of brushless dual-feed motor operation.Meanwhile the governing system is also
With 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 diagram of the brushless dual-feed motor arrangements for speed regulation of the utility model high reliability.
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
The embodiment of the brushless dual-feed motor arrangements for speed regulation of the utility model high reliability is further described in utility model.It should manage
Solution, specific embodiment described herein only to explain the utility model, are not used to limit the utility model.
Reference picture 1, the brushless dual-feed motor arrangements for speed regulation of the utility model high reliability, including the first three-phase alternating-current supply
1st, the second three-phase alternating-current supply 2, the first full-control type current transformer 3, the second full-control type current transformer 4, three pole reactor L1, dc bus electricity
Hold C and brushless dual-feed motor 7 and the mechanical load being connected with the brushless dual-feed motor rotating shaft, in addition to seven three-phase alternating-current switchs
K1-K7, three dc switch K8-K10 and uncontrollable current transformer 5, wherein：
The power winding of first three-phase alternating-current supply 1, the first three-phase alternating-current switch K1 and brushless dual-feed motor split-phase successively
It is connected in series.The AC of second three-phase alternating-current supply 2, the second three-phase alternating-current switch K2 and the first full-control type current transformer 3 is successively
Split-phase is connected in series.The AC of second three-phase alternating-current supply 2, the 3rd three-phase alternating-current switch K3 and uncontrollable current transformer 5 is successively
Split-phase is connected in series.Second three-phase alternating-current supply 2, the 3rd three-phase alternating-current switch K3, the 4th three-phase alternating-current switch K4 and brushless pair
Split-phase is connected in series the controling winding of generating aid successively.Second three-phase alternating-current supply 2 divides successively with the 7th three-phase alternating-current switch K7
Be in series connection and split-phase is connected in parallel successively with the AC of the second full-control type current transformer 4.The friendship of first full-control type current transformer 3
Split-phase is connected in series the controling winding of stream side, the 6th three-phase alternating-current switch K6 and brushless dual-feed motor successively.First full-control type becomes
Flow the direct current of the DC side high voltage end of device 3, the first dc switch K10, the second dc switch K9 and the second full-control type current transformer 4
Side high voltage end is sequentially connected in series, AC, the 5th three-phase alternating-current switch K5 and the brushless double feed of the second full-control type current transformer 4
Split-phase is connected in series the controling winding of motor successively.The DC side high voltage end and the 3rd dc switch K8 of uncontrollable current transformer 5
It is connected in series and is connected with the first dc switch K10 and the second dc switch K9 series connection node, two full-control type current transformers 3,4
Reference ground line end is connected to each DC side low-voltage end of uncontrollable current transformer 5.
Split-phase is connected to the second three-phase alternating-current supply 2 and the second three-phase alternating-current switch K2, the three or three to three pole reactor L1 successively
Between the public input of tri- three-phase alternating-current switchs of phase alternating-current switch K3 and the 7th three-phase alternating-current switch K7, dc-link capacitance
C is connected between the first dc switch K10 and the second dc switch K9 series connection node and reference ground line end.
In the different embodiment of the brushless dual-feed motor arrangements for speed regulation of the utility model high reliability, the first three-phase alternating current
The three-phase alternating-current supply 2 of power supply 1 and second can be identical three-phase alternating-current supply, or the three-phase alternating current differed
Source.
The brushless dual-feed motor arrangements for speed regulation of the utility model high reliability, the control method 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, the 5th three-phase alternating-current switch K5, the 7th three-phase alternating-current switch K7 and the 3rd dc switch K8 are switched, it is intersecting to be closed again the one or three
Stream switch K1, the second three-phase alternating-current switch K2, the 6th three-phase alternating-current switch K6, the second dc switch K9 and the first dc switch
K10, it is made up of three pole reactor L1, the first full-control type current transformer 3, dc-link capacitance C and the second full-control type current transformer 4 brushless double
The converter system of generating aid 7；
2) when the first full-control type current transformer 3 breaks down and motor works in supersynchronous state, the second three-phase is first disconnected
Alternating-current switch K2, the 4th three-phase alternating-current switch K4, the 5th three-phase alternating-current switch K5, the 7th three-phase alternating-current switch K7 and the first direct current
K10 is switched, is closed again the first three-phase alternating-current switch K1, the 3rd three-phase alternating-current switch K3, the 6th three-phase alternating-current switch K6, the 3rd straight
Stream switch K8 and the second dc switch K9, by three pole reactor L1, uncontrollable current transformer 5, dc-link capacitance C and the second full-control type
Current transformer 4 forms the converter system of brushless dual-feed motor 7；
3) when the second full-control type current transformer 4 breaks down and motor works in metasynchronism state, the second three-phase is first disconnected
Alternating-current switch K2, the 3rd three-phase alternating-current switch K3, the 5th three-phase alternating-current switch K5, the 6th three-phase alternating-current switch K6 and the first direct current
K10 is switched, is closed again the first three-phase alternating-current switch K1, the 3rd three-phase alternating-current switch K3, the 6th three-phase alternating-current switch K6, the 3rd straight
Stream switch K8 and the second dc switch K9, by three pole reactor L1, uncontrollable current transformer 5, dc-link capacitance C and the second full-control type
Current transformer 4 forms the converter system of brushless dual-feed motor 7.
4) when the first full-control type current transformer 3 breaks down and when motor works in metasynchronism state, the two or three is first disconnected
Phase alternating-current switch K2, the 3rd three-phase alternating-current switch K3, the 5th three-phase alternating-current switch K5, the 6th three-phase alternating-current switch K6 and first are straight
Stream switch K10, is closed again the first three-phase alternating-current switch K1, the 4th three-phase alternating-current switch K4, the 7th three-phase alternating-current switch K7, the 3rd
Dc switch K8 and the second dc switch K9, controlled entirely by three pole reactor L1, uncontrollable current transformer 5, dc-link capacitance C and second
Type current transformer 4 forms the converter system of brushless dual-feed motor.
5) when the second full-control type current transformer 4 breaks down and when motor works in supersynchronous state, the two or three is first disconnected
Phase alternating-current switch K2, the 4th three-phase alternating-current switch K4, the 6th three-phase alternating-current switch K6, the 7th three-phase alternating-current switch K7 and second are straight
Stream switch K9, is closed again the first three-phase alternating-current switch K1, the second three-phase alternating-current switch K2, the 5th three-phase alternating-current switch K5, the 3rd
Dc switch K8 and the first dc switch K10 is complete by three pole reactor L1, uncontrollable current transformer 5, dc-link capacitance C and first
Control type current transformer 3 forms the converter system of brushless dual-feed motor.
6) when the second full-control type current transformer 4 breaks down and when motor works in metasynchronism state, the three or three is first disconnected
Phase alternating-current switch K3, the 5th three-phase alternating-current switch K5, the 6th three-phase alternating-current switch K6, the 7th three-phase alternating-current switch K7 and second are straight
Stream switch K9, is closed again the first three-phase alternating-current switch K1, the second three-phase alternating-current switch K2, the 4th three-phase alternating-current switch K4, the 3rd
Dc switch K8 and the first dc switch K10 is complete by three pole reactor L1, uncontrollable current transformer 5, dc-link capacitance C and first
Control type current transformer 3 forms the converter system of brushless dual-feed motor.
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 of high reliability, including the first three-phase alternating-current supply (1), the second three-phase alternating current
Power 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 brushless double with this
The connected mechanical load of generating aid rotating shaft, it is characterised in that：Also include seven three-phase alternating-current switchs (K1-K7), three direct currents are opened
(K8-K10) and uncontrollable current transformer (5) are closed, wherein：First three-phase alternating-current supply (1), the first three-phase alternating-current switch (K1)
Split-phase is connected in series successively with the power winding of the brushless dual-feed motor, second three-phase alternating-current supply (2), the second three-phase
Split-phase is connected in series the AC of alternating-current switch (K2) and the first full-control type current transformer (3) successively, and the described 2nd 3 is intersecting
Flow power supply (2), split-phase is connected in series the AC of the 3rd three-phase alternating-current switch (K3) and uncontrollable current transformer (5) successively, described
Second three-phase alternating-current supply (2), the 3rd three-phase alternating-current switch (K3), the 4th three-phase alternating-current switch (K4) with it is described brushless double-fed
Split-phase is connected in series the controling winding of machine successively, second three-phase alternating-current supply (2) and the 7th three-phase alternating-current switch (K7) according to
Secondary split-phase is connected in series and split-phase is connected in parallel successively with the AC of the second full-control type current transformer (4), first full-control type
The AC of current transformer (3), the controling winding of the 6th three-phase alternating-current switch (K6) and brushless dual-feed motor successively connect company by split-phase
Connect, DC side high voltage end, the first dc switch (K10), the second dc switch (K9) of the first full-control type current transformer (3)
It is sequentially connected in series with the DC side high voltage end of the second full-control type current transformer (4), the friendship of the second full-control type current transformer (4)
Flow side, split-phase is connected in series the controling winding of the 5th three-phase alternating-current switch (K5) and brushless dual-feed motor successively, described uncontrollable
The DC side high voltage end of current transformer (5) and the 3rd dc switch (K8) be connected in series and with the first dc switch (K10) and
The series connection node of two dc switch (K9) is connected, and two full-control type current transformers (3,4) and uncontrollable current transformer (5) each DC side are low
Voltage end is connected to reference ground line end.
2. the brushless dual-feed motor arrangements for speed regulation of high reliability according to claim 1, it is characterised in that：Also include three-phase
Inductance (L1) and dc-link capacitance (C), wherein split-phase is connected to second three-phase alternating current to the three pole reactor (L1) successively
Power supply (2) and second three-phase alternating-current switch (K2), the 3rd three-phase alternating-current switch (K3) and the 7th three-phase alternating-current switch (K7)
Between the public input of three three-phase alternating-current switchs, the dc-link capacitance (C) be connected to the first dc switch (K10) and
Between the series connection node and reference ground line end of second dc switch (K9).
3. high reliability brushless dual-feed motor arrangements for speed regulation according to claim 2, it is characterised in that：Wherein described first
Three-phase alternating-current supply (1) and the second three-phase alternating-current supply (2) are identical three-phase alternating-current supply.
4. high reliability brushless dual-feed motor arrangements for speed regulation according to claim 2, it is characterised in that：Wherein described first
Three-phase alternating-current supply (1) and the second three-phase alternating-current supply (2) are the three-phase alternating-current supply differed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720558897.9U CN206743141U (en) | 2017-05-19 | 2017-05-19 | A kind of brushless dual-feed motor arrangements for speed regulation of high reliability |
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| CN201720558897.9U CN206743141U (en) | 2017-05-19 | 2017-05-19 | A kind of brushless dual-feed motor arrangements for speed regulation of high reliability |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106982013A (en) * | 2017-05-19 | 2017-07-25 | 广东上水能源科技有限公司 | The brushless dual-feed motor arrangements for speed regulation and its control method of high reliability |
-
2017
- 2017-05-19 CN CN201720558897.9U patent/CN206743141U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106982013A (en) * | 2017-05-19 | 2017-07-25 | 广东上水能源科技有限公司 | The brushless dual-feed motor arrangements for speed regulation and its control method of high reliability |
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Effective date of registration: 20231110 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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