CN200956563Y - High-voltage AC winding motor rotor variable frequency speed-regulating control system - Google Patents
High-voltage AC winding motor rotor variable frequency speed-regulating control system Download PDFInfo
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- CN200956563Y CN200956563Y CNU2006200274680U CN200620027468U CN200956563Y CN 200956563 Y CN200956563 Y CN 200956563Y CN U2006200274680 U CNU2006200274680 U CN U2006200274680U CN 200620027468 U CN200620027468 U CN 200620027468U CN 200956563 Y CN200956563 Y CN 200956563Y
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- electric motor
- rotor
- converter
- coiling electric
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Abstract
The utility model discloses a high-voltage AC wire-wound motor rotor frequency control system, comprising a converter, an AC wire-wound motor, a high-voltage switch cabinet, a transformer and a control device. The high-voltage switch cabinet is connected to the input end of the transformer; the output end of the transformer is connected to the power supply input end of the converter; the output end of the converter is connected to the AC wire-wound motor; and the control device for controlling the output frequency of the converter is connected to the converter. The converter is connected to the rotor of the AC wire-wound motor, and the stator of the wire-wound motor is shortly enveloped. The output voltage of the transformer, the output voltage of the converter and the voltage of the rotor of the AC wire-wound motor match each other. The control device is a PLC means. After short envelope of the rotor of the high-voltage wire-wound motor, the frequency of the high-voltage AC wire-wound motor can be controlled, and the voltage class of the rotor converter is only required to match the voltage of the motor rotor. Compared with high-voltage stator frequency control, the utility model has a simple structure, strong versatility and high reliability.
Description
Technical field
The utility model belongs to a kind of high-voltage alternating coiling electric motor, relates to particularly that a kind of equipment is simple, highly versatile, high-voltage alternating coiling electric motor rotor frequency conversion speed-adjusting control system that reliability is high.
Background technology
At present, the main equipment that China uses the high-voltage alternating coiling electric motor to drag in occasions such as coal, metallurgy, electric power in a large number, but its speed regulating control adopts control modes such as rotor resistance speed governing, rotor tandem control, high pressure soft starting more, and speed adjusting performance is poor, and energy waste is serious.Also there is equipment component to use high-voltage frequency conversion and speed-adjusting control at present, speed regulating control effect, good energy-conserving effect, but high voltage converter requires the withstand voltage height of frequency converter, technical sophistication, cost higher.Common motor variable-frequency speed-regulating control is all at the stator loop, and the stator voltage of high-tension winding motor is generally all about 6KV or 10KV.Adopt the high voltage converter of 6KV or 10KV, need to solve component pressure problem, vector control problem, the increase of technical difficulty causes reliability reduction, manufacturing cost significantly to improve.So, the equipment operation that seldom has at present both at home and abroad the vector-control frequency converter that uses 6KV or 10KV to carry out frequency control, and the high-pressure frequency-conversion technical scheme of the many companies in home and abroad also has nothing in common with each other, equipment interoperability is poor, operating mode for the permanent torque running of high-voltage motor, do not have perfect vector control scheme available, most of high voltage converters can only be applied in equipment such as blower fan water pump.
Summary of the invention
The utility model provides for solving the technical problem that exists in the known technology that a kind of equipment is simple, highly versatile, high-voltage alternating coiling electric motor rotor frequency conversion speed-adjusting control system that reliability is high.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is: a kind of high-voltage alternating coiling electric motor rotor frequency conversion speed-adjusting control system, include frequency converter, exchange coiling electric motor, also be provided with high-tension switch cabinet, transformer and control device, wherein, high-tension switch cabinet connects the input of transformer, the output of transformer connects the power input of frequency converter, the output of frequency converter connects the interchange coiling electric motor, and the control device that is used for control of conversion device output frequency links to each other with frequency converter.
Described frequency converter is connected with the rotor that exchanges coiling electric motor, and the stator of coiling electric motor is by short envelope.The output voltage of described transformer and the output voltage of frequency converter and the rotor voltage that exchanges coiling electric motor are complementary.Described control device is the PLC device.Described high-tension switch cabinet is the duplicate supply high-tension switch cabinet.
Advantage and the good effect that the utlity model has are: because high-voltage alternating coiling electric motor rotor frequency conversion speed-adjusting control system of the present utility model adopts said structure, with the universal vector-control frequency converter technology of the low pressure of utilizing present maturation, stator weak point to the high-tension winding motor is honored as a queen, can realize the frequency control of high-voltage alternating coiling electric motor, because the rotor voltage of high-tension winding motor is lower, the electric pressure of rotor-side variable frequency device needs only and the rotor voltage matches, can use low voltage frequency converter to solve the frequency control problem of high-voltage motor like this.Compare with high pressure stator variable frequency regulating speed control, equipment is simple, highly versatile, reliability height.
Description of drawings
Fig. 1 is a system configuration schematic diagram of the present utility model.
Label among the figure is respectively: the 1-high-tension switch cabinet; The 2-transformer;
The 3-frequency converter; 4-high-voltage alternating coiling electric motor; The 5-control device.
Embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
As shown in Figure 1, a kind of high-voltage alternating coiling electric motor rotor frequency conversion speed-adjusting control system of the present utility model, include frequency converter 3, high-voltage alternating coiling electric motor 4 also is provided with high-tension switch cabinet 1, transformer 2 and control device 5, wherein, high-tension switch cabinet 1 connects the input of transformer 2, and the output of transformer 2 connects the power input of frequency converter 3, the output of frequency converter 3 connects high-voltage alternating coiling electric motor 4, and the control device 5 that is used for control of conversion device 3 output frequencies links to each other with frequency converter 3.
The stator of described high-tension winding motor 4 is by short envelope, frequency converter 3 is connected with the rotor of high-voltage alternating coiling electric motor 4, promptly, use the rotor power supply of 3 pairs of high-tension winding motors 4 of frequency converter, and the rotor voltage of the voltage of the output voltage of transformer 2 and frequency converter 3 and high-voltage alternating coiling electric motor 4 is complementary, and carries out variable frequency regulating speed control by 3 pairs of motors of frequency converter.
Described control device 5 is the PLC device, and PLC control device 5 sends frequency instruction, and control of conversion device 3 is frequently carried out speed regulating control.
Described high-tension switch cabinet 1 is the duplicate supply high-tension switch cabinet, and the selected model of present embodiment is TGG-6Z.
Claims (5)
1. high-voltage alternating coiling electric motor rotor frequency conversion speed-adjusting control system, include frequency converter (3), exchange coiling electric motor (4), it is characterized in that: also be provided with high-tension switch cabinet (1), transformer (2) and control device (5), wherein, high-tension switch cabinet (1) connects the input of transformer (2), the output of transformer (2) connects the power input of frequency converter (3), the output of frequency converter (3) connects interchange coiling electric motor (4), and the control device (5) that is used for control of conversion device (3) output frequency links to each other with frequency converter (3).
2. high-voltage alternating coiling electric motor rotor frequency conversion speed-adjusting control system according to claim 1 is characterized in that: described frequency converter (3) is connected with the rotor that exchanges coiling electric motor (4), and the stator that exchanges coiling electric motor (4) is by short envelope.
3. high-voltage alternating coiling electric motor rotor frequency conversion speed-adjusting control system according to claim 1 is characterized in that: the output voltage of the output voltage of described transformer (2) and frequency converter (3) and the rotor voltage that exchanges coiling electric motor (4) are complementary.
4. high-voltage alternating coiling electric motor rotor frequency conversion speed-adjusting control system according to claim 1 is characterized in that: described control device (5) is the PLC device.
5. high-voltage alternating coiling electric motor rotor frequency conversion speed-adjusting control system according to claim 1, it is characterized in that: described high-tension switch cabinet (1) is the duplicate supply high-tension switch cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200274680U CN200956563Y (en) | 2006-09-29 | 2006-09-29 | High-voltage AC winding motor rotor variable frequency speed-regulating control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200274680U CN200956563Y (en) | 2006-09-29 | 2006-09-29 | High-voltage AC winding motor rotor variable frequency speed-regulating control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200956563Y true CN200956563Y (en) | 2007-10-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200274680U Expired - Fee Related CN200956563Y (en) | 2006-09-29 | 2006-09-29 | High-voltage AC winding motor rotor variable frequency speed-regulating control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200956563Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237843A (en) * | 2011-07-14 | 2011-11-09 | 中国矿业大学 | High-performance variable frequency speed regulation method of high-voltage winding asynchronous motor rotor |
| CN103869246A (en) * | 2014-03-25 | 2014-06-18 | 济钢集团有限公司 | Motor bearing defect detecting system |
| CN111786610A (en) * | 2020-07-08 | 2020-10-16 | 嘉兴丹那赫电子科技有限公司 | Monitoring method of frequency converter and control device thereof |
-
2006
- 2006-09-29 CN CNU2006200274680U patent/CN200956563Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237843A (en) * | 2011-07-14 | 2011-11-09 | 中国矿业大学 | High-performance variable frequency speed regulation method of high-voltage winding asynchronous motor rotor |
| CN103869246A (en) * | 2014-03-25 | 2014-06-18 | 济钢集团有限公司 | Motor bearing defect detecting system |
| CN111786610A (en) * | 2020-07-08 | 2020-10-16 | 嘉兴丹那赫电子科技有限公司 | Monitoring method of frequency converter and control device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Tianjin people Yi Electric Co., Ltd. Assignor: Ji Shengchun Contract record no.: 2010120000062 Denomination of utility model: High-voltage AC winding motor rotor variable frequency speed-regulating control system Granted publication date: 20071003 License type: Exclusive License Record date: 20100527 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071003 Termination date: 20140929 |
|
| EXPY | Termination of patent right or utility model |