CN204886753U - Synchronous motor frequency conversion drags excitation system - Google Patents
Synchronous motor frequency conversion drags excitation system Download PDFInfo
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- CN204886753U CN204886753U CN201520509365.7U CN201520509365U CN204886753U CN 204886753 U CN204886753 U CN 204886753U CN 201520509365 U CN201520509365 U CN 201520509365U CN 204886753 U CN204886753 U CN 204886753U
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Abstract
The utility model provides an electrical equipment power drags field, a concretely relates to synchronous motor frequency conversion drags excitation system. DCS control system send instruction is high -pressure vacuum circuit breaker extremely, and after high -voltage inverter gathered above -mentioned command signal, cooling system worked to sending the ready signal to DCS control system, then starting high -voltage inverter's vacuum contactor, vacuum contactor closes a floodgate, and high -voltage inverter is according to DCS control system's changeable electric current of instruction output frequence and voltage, and excitation system accepts the corresponding excitation current of output behind the above -mentioned signal of voltage and current. The utility model discloses an advantage: excitation system's control signal converts the output that linear 0 -10V voltage signal controlled excitation current into by 0 -50Hz, matches the synchronous motor excitation like this, is favorable to technology to be adjusted, makes the level and smooth reducing impact of start -up of mechanical equipment, extension equipment life.
Description
Technical field
The utility model belongs to electric equipment power and drags field, is specifically related to a kind of synchronous motor Frequency converting driving excitation system.
Background technology
China's electric power industry development state of affairs is good, makes the steady growth within the quite a while of the motor market demand.Excitation system is the important component part of synchronous motor operational system, directly affects the operation characteristic of motor, especially in the synchronous machine of inverter supply, has higher requirement to the reliability of excitation system and communication function.
High-tension motor Frequency converting driving changes motor speed, impacts comparatively large between plant equipment, and long-time easily damage equipment, reduces the useful life of equipment.
Summary of the invention
For solving the problem, the utility model provides a kind of synchronous motor Frequency converting driving excitation system.
The utility model adopts following technical scheme: synchronous motor Frequency converting driving excitation system, DCS control system sends instruction to high-pressure vacuum breaker, after high voltage converter collects above-mentioned command signal, cooling system works, and ready signal is sent to DCS control system, then the vacuum contactor of high voltage converter is started, vacuum contactor closes a floodgate, high voltage converter is according to the variable electric current of the instruction output frequency of DCS control system and voltage, and excitation system exports corresponding exciting current after receiving above-mentioned voltage and current signal.
Described excitation system control signal is that 0-10V voltage signal is to control the output of exciting current.
Advantage of the present utility model: the control signal of excitation system is converted to linear 0-10V voltage signal to control the output of exciting current by 0-50Hz, match synchronization motor excitation like this, be conducive to process adjustments, plant equipment smoothly started reduce to impact, extension device useful life.
Accompanying drawing explanation
Fig. 1 is system flow chart of the present utility model.
Embodiment
As shown in Figure 1, synchronous motor Frequency converting driving excitation system, DCS control system sends instruction to high-pressure vacuum breaker, after high voltage converter collects above-mentioned command signal, cooling system work, and ready signal is sent to DCS control system, then the vacuum contactor of high voltage converter is started, vacuum contactor closes a floodgate, and high voltage converter is according to the variable electric current of the instruction output frequency of DCS control system and voltage, and excitation system exports corresponding exciting current after receiving above-mentioned voltage and current signal.
The course of work of the present utility model: according to Production requirement, when high-voltage synchronous motor needs to put into operation, high-pressure vacuum breaker reclosing command is issued by DCS control system, after high voltage converter collects switch changed position, after high voltage converter collects normal voltage signal, cooling system is started working, and ready signal is sent to DCS control system, then the vacuum contactor of high voltage converter is started, vacuum contactor closes a floodgate successfully, frequency converter is according to the variable sine-wave current of DCS control system speed-regulating instruction output frequency and voltage, because high-voltage synchronous motor needs excitation system to export corresponding exciting current according to the numerical value of high voltage converter output frequency.High-voltage synchronous motor excitation system generally designs according to power frequency, major part is run with constant power factor or the permanent mode such as idle, carry out relevant transformation to excitation system after high-voltage synchronous motor variable frequency control, frequency 0-50Hz is converted to linear 0-10v voltage signal and carrys out match synchronization motor excitation like this to the output controlling exciting current.
Claims (2)
1. synchronous motor Frequency converting driving excitation system, it is characterized in that: DCS control system sends instruction to high-pressure vacuum breaker, after high voltage converter collects above-mentioned command signal, cooling system works, and ready signal is sent to DCS control system, then the vacuum contactor of high voltage converter is started, vacuum contactor closes a floodgate, high voltage converter is according to the variable electric current of the instruction output frequency of DCS control system and voltage, and excitation system exports corresponding exciting current after receiving above-mentioned voltage and current signal.
2. synchronous motor Frequency converting driving excitation system according to claim 1, is characterized in that: described excitation system control signal is that 0-10V voltage signal is to control the output of exciting current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520509365.7U CN204886753U (en) | 2015-07-15 | 2015-07-15 | Synchronous motor frequency conversion drags excitation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520509365.7U CN204886753U (en) | 2015-07-15 | 2015-07-15 | Synchronous motor frequency conversion drags excitation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204886753U true CN204886753U (en) | 2015-12-16 |
Family
ID=54831073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520509365.7U Expired - Fee Related CN204886753U (en) | 2015-07-15 | 2015-07-15 | Synchronous motor frequency conversion drags excitation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204886753U (en) |
-
2015
- 2015-07-15 CN CN201520509365.7U patent/CN204886753U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20151216 Termination date: 20210715 |