CN109450296A - Process boost type auto-transformer starting device and starting method - Google Patents
Process boost type auto-transformer starting device and starting method Download PDFInfo
- Publication number
- CN109450296A CN109450296A CN201811321321.6A CN201811321321A CN109450296A CN 109450296 A CN109450296 A CN 109450296A CN 201811321321 A CN201811321321 A CN 201811321321A CN 109450296 A CN109450296 A CN 109450296A
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- Prior art keywords
- open switch
- normal open
- transformer
- auto
- motor
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
Abstract
The invention discloses a kind of process boost type auto-transformer starting devices, are related to motor starting equipment technical field, including motor auto-transformer starting circuit and motor operation circuit, the reduced voltage starting of the motor auto-transformer starting circuit control motor；The motor operation circuit control motor runs well, and the motor auto-transformer starting circuit controls motor process boost type and start in auto-transformer leading-out terminal tandem reactor.The invention discloses a kind of process boost type auto-transformer starting methods.Process boost type auto-transformer starting device of the invention, under the conditions of meeting blower, pump apparatus motor load characteristic, starting current is smaller.
Description
Technical field
The present invention relates to motor starting equipment technical fields, and in particular to a kind of process boost type auto-transformer starting
Device and starting method.
Background technique
In production and living, when starting of some motor, needs to reduce terminal voltage of motor to reduce starting current, mesh
Be reduce starting process in power source bus voltage drop, protect the normal operation of power grid.Auto-transformer can be used as one kind
Starting device of motor, when starting motor, motor accesses the low-voltage output of auto-transformer, reduces the starting of motor
Electric current is switched to total pressure operation after waiting electrical motors to full speed.But shown in Figure 1, common auto-transformer starting dress
It sets when being used as blower, pump apparatus motor starting, since blower, pump apparatus motor are born with what load gradually rose
Characteristic is carried, and the starting output voltage of common auto-transformer starting device is substantially fixed value, so common auto-transformer
Moment of resistance when starting device only presses motor starting latter stage high revolving speed considers start-up parameters, i.e., there is still a need for bigger than normal for starting current
Design.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide a kind of process boost type auto-transformers
Starting device, under the conditions of meeting blower, pump apparatus motor load characteristic, starting current is smaller.
To achieve the above objectives, the technical solution adopted by the present invention is that: a kind of process boost type auto-transformer starting dress
It sets, comprising:
Motor auto-transformer starting circuit, input terminal are connect with power supply, the motor auto-transformer starting
Circuit includes the first normal open switch, auto-transformer, the second normal open switch, reactor and third normal open switch, the self coupling
Transformer is equipped with end of incoming cables, leading-out terminal and asterism end, and the both ends of first normal open switch are separately connected power supply and institute
The end of incoming cables of auto-transformer is stated, the both ends of second normal open switch are separately connected the asterism of ground wire and the auto-transformer
After end, the reactor and third normal open switch series connection, and it is connected in the both ends of second normal open switch；
Motor operation circuit, input terminal are connect with power supply, and the motor operation circuit includes the 4th normal open switch
With the 5th normal open switch, the 4th normal open switch and the 5th normal open switch are connected to motor, and the 4th normal open switch is also
It is connect with the leading-out terminal of the auto-transformer, the 5th normal open switch is also connect with power supply.
Based on the above technical solution, the reactor is iron core reactor.
It is an object of the invention to also provide a kind of starting using above process boost type auto-transformer starting device
Method, comprising the following steps:
It is closed first normal open switch, second normal open switch and the 4th normal open switch；
It is closed the third normal open switch, disconnects second normal open switch；
It disconnects the third normal open switch, is closed the 5th normal open switch, disconnect first normal open switch and described
4th normal open switch.
Based on the above technical solution, when the speed of motor reaches predetermined value, it is closed that the third is normally opened to be opened
It closes, then disconnects second normal open switch.
Based on the above technical solution, when the speed of motor reaches full speed, the third normal open switch is disconnected,
It is closed the 5th normal open switch, disconnects first normal open switch and the 4th normal open switch.
Compared with prior art, a kind of process boost type auto-transformer starting device advantage of the invention is: certainly
Coupling inducer for line outlet end of transformer tandem reactor, motor starting initial stage, reactor do not work, and auto-transformer leading-out terminal starts electricity
To press lower, starting current is smaller, motor starting latter stage, and under reactor effect, increase auto-transformer outlet voltage,
Meet the requirement of blower, the pump apparatus motor starting latter stage moment of resistance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing common auto-transformer starting device；
Fig. 2 is the structural schematic diagram of process boost type auto-transformer starting device in the embodiment of the present invention；
In figure: the first normal open switch of 1-, 2- auto-transformer, the end of incoming cables 21-, 22- leading-out terminal, 23- asterism end, 3- second
Normal open switch, the 4th normal open switch of 4-, the 5th normal open switch of 5-, 6- reactor, 7- third normal open switch, 8- motor.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and embodiments.
Shown in Figure 2, the embodiment of the present invention provides a kind of process boost type auto-transformer starting device, including motor
Auto-transformer starting circuit and motor operation circuit.
Motor auto-transformer starting circuit, input terminal are connect with power supply, the motor auto-transformer starting
Circuit includes the first normal open switch 1, auto-transformer 2, the second normal open switch 3, reactor 6 and third normal open switch 7, described
Auto-transformer 2 is equipped with end of incoming cables 21, leading-out terminal 22 and asterism end 23, and the both ends of first normal open switch 1 are separately connected
The end of incoming cables 21 of power supply and the auto-transformer 2, the both ends of second normal open switch 3 are separately connected ground wire and described
After the asterism end 23 of auto-transformer 2, the reactor 6 and the third normal open switch 7 series connection, and it is connected in described second often
The both ends of switch 3；
Motor operation circuit, input terminal are connect with power supply, and the motor operation circuit includes the 4th normal open switch 4
With the 5th normal open switch 5, the 4th normal open switch 4 and the 5th normal open switch 5 are connected to motor, the 4th normal open switch
4 also connect with the leading-out terminal 22 of the auto-transformer 2, and the 5th normal open switch 5 is also connect with power supply.
Compared with prior art, a kind of process boost type auto-transformer starting device of the embodiment of the present invention, in self coupling
22 tandem reactor 6 of leading-out terminal of transformer 2, motor starting initial stage, reactor 6 do not work, the outlet of auto-transformer 2
Hold 22 starting voltages lower, starting current is smaller, motor starting latter stage, under the effect of reactor 6, makes auto-transformer 2
22 voltage of leading-out terminal increases, and meets the requirement of blower, the pump apparatus motor starting latter stage moment of resistance.
As preferred embodiment, the reactor 6 is iron core reactor, cheap, at low cost.
The embodiment of the present invention also provides a kind of starting method using above process boost type auto-transformer starting device,
The following steps are included:
It is closed first normal open switch 1, second normal open switch 3 and the 4th normal open switch 4.
It is closed the third normal open switch 7, disconnects second normal open switch 3.Specifically, when the speed of motor reaches
When predetermined value, it is closed the third normal open switch 7, then disconnects second normal open switch 3.
The third normal open switch 7 is disconnected, the 5th normal open switch 5 is closed, disconnects first normal open switch 1 and institute
State the 4th normal open switch 4.Specifically, when the speed of motor reaches full speed, the third normal open switch 7 is disconnected, is closed institute
The 5th normal open switch 5 is stated, first normal open switch 1 and the 4th normal open switch 4 are disconnected.
Compared with prior art, a kind of process boost type auto-transformer starting method of the embodiment of the present invention becomes in self coupling
22 tandem reactor 6 of leading-out terminal of depressor 2, motor starting initial stage, reactor 6 do not work, the leading-out terminal of auto-transformer 2
22 starting voltages are lower, and starting current is smaller.Motor starting latter stage, the speed of motor reach predetermined value, are closed described the
Three normal open switch 7, then second normal open switch 3 is disconnected, under the effect of reactor 6, make 22 electricity of leading-out terminal of auto-transformer 2
Pressure increases, and meets the requirement of blower, the pump apparatus motor starting latter stage moment of resistance.After the completion of motor starting process, motor
Speed reach at full speed, disconnect the third normal open switch 7, be closed the 5th normal open switch 5, disconnect described first and normally opened opens
Pass 1 and the 4th normal open switch 4, motor start to work normally.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (5)
1. a kind of process boost type auto-transformer starting device characterized by comprising
Motor auto-transformer starting circuit, input terminal are connect with power supply, the motor auto-transformer starting circuit
Including the first normal open switch (1), auto-transformer (2), the second normal open switch (3), reactor (6) and third normal open switch
(7), the auto-transformer (2) is equipped with end of incoming cables (21), leading-out terminal (22) and asterism end (23), first normal open switch
(1) both ends are separately connected the end of incoming cables (21) of power supply and the auto-transformer (2), second normal open switch (3)
Both ends be separately connected the asterism end (23) of ground wire and the auto-transformer (2), the reactor (6) and the third are normally opened
After switching (7) series connection, and it is connected in the both ends of second normal open switch (3)；
Motor operation circuit, input terminal are connect with power supply, the motor operation circuit include the 4th normal open switch (4) and
5th normal open switch (5), the 4th normal open switch (4) and the 5th normal open switch (5) are connected to motor, and the described 4th is normally opened
Switch (4) is also connect with the leading-out terminal (22) of the auto-transformer (2), and the 5th normal open switch (5) is gone back and power supply
Connection.
2. process boost type auto-transformer starting device as described in claim 1, it is characterised in that: the reactor (6)
For iron core reactor.
3. a kind of starting method using process boost type auto-transformer starting device as described in claim 1, feature
It is, comprising the following steps:
It is closed first normal open switch (1), second normal open switch (3) and the 4th normal open switch (4)；
It is closed the third normal open switch (7), disconnects second normal open switch (3)；
Disconnect the third normal open switch (7), be closed the 5th normal open switch (5), disconnect first normal open switch (1) and
4th normal open switch (4).
4. starting method as claimed in claim 3, it is characterised in that: when the speed of motor reaches predetermined value, be closed institute
Third normal open switch (7) are stated, then disconnect second normal open switch (3).
5. starting method as claimed in claim 3, it is characterised in that: when the speed of motor reaches full speed, described in disconnection
Third normal open switch (7) is closed the 5th normal open switch (5), disconnects first normal open switch (1) and described 4th normally opened
It switchs (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811321321.6A CN109450296A (en) | 2018-11-07 | 2018-11-07 | Process boost type auto-transformer starting device and starting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811321321.6A CN109450296A (en) | 2018-11-07 | 2018-11-07 | Process boost type auto-transformer starting device and starting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109450296A true CN109450296A (en) | 2019-03-08 |
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ID=65550583
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811321321.6A Pending CN109450296A (en) | 2018-11-07 | 2018-11-07 | Process boost type auto-transformer starting device and starting method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07222470A (en) * | 1994-01-26 | 1995-08-18 | Taiyo Electric Mfg Co Ltd | Starting method of induction motor |
| CN101860285A (en) * | 2010-05-11 | 2010-10-13 | 宁波高新区宁变电力设备有限公司 | Autotransformer device and starting method for soft start of high-power motor |
| CN202696519U (en) * | 2012-07-25 | 2013-01-23 | 浙江永华电气有限公司 | Self-coupling voltage-reducing starting cabinet |
| CN103023391A (en) * | 2012-12-13 | 2013-04-03 | 武汉理工大学 | Soft-starting current-limiting compensation and harmonic filtering integration method of high-voltage high-power motor |
-
2018
- 2018-11-07 CN CN201811321321.6A patent/CN109450296A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07222470A (en) * | 1994-01-26 | 1995-08-18 | Taiyo Electric Mfg Co Ltd | Starting method of induction motor |
| CN101860285A (en) * | 2010-05-11 | 2010-10-13 | 宁波高新区宁变电力设备有限公司 | Autotransformer device and starting method for soft start of high-power motor |
| CN202696519U (en) * | 2012-07-25 | 2013-01-23 | 浙江永华电气有限公司 | Self-coupling voltage-reducing starting cabinet |
| CN103023391A (en) * | 2012-12-13 | 2013-04-03 | 武汉理工大学 | Soft-starting current-limiting compensation and harmonic filtering integration method of high-voltage high-power motor |
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Application publication date: 20190308 |
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