CN203851069U - Excitation control device - Google Patents
Excitation control device Download PDFInfo
- Publication number
- CN203851069U CN203851069U CN201420005355.5U CN201420005355U CN203851069U CN 203851069 U CN203851069 U CN 203851069U CN 201420005355 U CN201420005355 U CN 201420005355U CN 203851069 U CN203851069 U CN 203851069U
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- Prior art keywords
- generator
- control device
- observing
- utility
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- 230000005284 excitation Effects 0.000 title abstract description 12
- 230000001360 synchronised effect Effects 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 abstract 3
- 238000004804 winding Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000005672 electromagnetic field Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Control Of Eletrric Generators (AREA)
Abstract
The utility model provides an excitation control device, and the device comprises a main generator, a measurement and control generator, and a synchronous control apparatus. The main generator is mechanically connected with the measurement and control generator. The synchronous control apparatus is connected with the main generator and the measurement and control generator through cables. The device provided by the utility model can precisely control the excitation time after PTI asynchronous start, removes the excitation impact, and improves the system safety and reliability.
Description
Technical field
The utility model relates to a kind of control method, and control method is encouraged in the throwing being specifically related to after a kind of synchronous motor asynchronous starting, belongs to ship control field.
Background technology
Some are equipped with the boats and ships of the two oar types of two-shipper at present, as rescue ship, maritime patrol ship etc., have the features such as the low time length of the speed of a ship or plane when task is cruised in execution.Boats and ships are under this operating mode, and the little efficiency of diesel load of using as main frame is low, is unfavorable for energy-saving and emission-reduction.In order to reduce energy consumption, boats and ships can only leave a main frame and drive the generator generating (PTO being connected with it under this operating mode, POWER TAKE OFF) and screw advance, and the generator being connected with opposite side main frame is thrown off, making it to be used as motor (PTI, POWER TAKE IN) uses and drives the screw of this side to advance.Under twin screw promotes, maneuverability and the fail safe of boats and ships have been guaranteed.
Boats and ships, under cruising condition, have the boats and ships of PTI function than the boats and ships that there is no PTI function, and fuel consume reduces greatly, has reached the effect of energy-saving and emission-reduction.Because PTI function boats and ships only need to be driven a main frame when cruising, and are to move under two main frames and there is no the boats and ships of PTI function.
As the motor of PTO/PTI function, require its motor structure itself and excitation system to possess PTO/PTI function, during PTO, be synchronous generator, during as PTI, be synchronous motor.Because its power is conventionally larger, in boats and ships low-voltage power supply system, maximum can reach 3150KVA. when as PTI, is asynchronous starting synchronous operation.Asynchronous starting mode generally adopts reduced voltage starting, and when reaching metasynchronism rotating speed, (slippage is less than 5%) connects PTI excitation circuit, with pull-in step.
It is instantaneous that PTI connects excitation system after asynchronous starting completes, even contrary if rotor field coil magnetic field physics magnetic pole and armature rotation winding electric field pole does not match, and can produce very large impulse current, and motor and electric power system are produced to very large harm.The purpose of this utility model is to provide a kind of control method, is used for detection rotor winding physics field pole and armature winding electromagnetic field magnetic pole relative position.When reaching suitable position, drop into PTI excitation system.
Utility model content
The problem that the utility model exists for above-mentioned prior art makes improvements, be that the technical problems to be solved in the utility model is to provide a kind of throwing and encourages control device, this throwing is encouraged control device and is used for detection rotor winding physics field pole and armature winding electromagnetic field magnetic pole relative position, when reaching suitable position, drop into PTI excitation system.
In order to solve the problems of the technologies described above, the utility model provides following technical scheme:
A kind of throwing is encouraged the throwing of control method and is encouraged control device, comprise main generator, observing and controlling generator and sync control device, described main generator is connected with described observing and controlling generator machinery, and described sync control device is connected with described observing and controlling generator with described main generator respectively by cable.
The utility model has the advantage of after PTI asynchronous starting, can accurately control to throw and encourage constantly, eliminate to throw and encourage impact, improve system security reliability.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model with embodiment 1 one of the present utility model, does not form restriction of the present utility model.In the accompanying drawings:
Fig. 1 is that control device schematic diagram is encouraged in the utility model throwing.
Embodiment
As shown in Figure 1, the utility model discloses a kind of throwing and encourages control device.
Control device is encouraged in throwing, comprises main generator 1, observing and controlling generator 2 and sync control device 3, main generator 1 and observing and controlling generator 2 mechanical connections, and sync control device 3 is connected with observing and controlling generator 2 with main generator 1 respectively by cable.
At main generator 1 anti-drive end, an observing and controlling generator 2 is installed, the requirement of observing and controlling generator 2 is that magnetic pole logarithm and rated voltage are identical with main generator 1, and power is very little, only needs 10VA.
First under PTO operating mode, the rotor magnetic pole position of adjusting observing and controlling generator 2 is identical with main generator 1 rotor magnetic pole position.Inspection method is: in main generator 1 and observing and controlling generator 2 generating situations simultaneously, compare the voltage-phase of observing and controlling generator 2 and main generator 1 by sync control device 3.Because being coaxial operation, its frequency is identical, phase difference is constant.As identically in phase place show that observing and controlling generator 2 is identical with the rotor magnetic pole position of main generator 1, if do not met the demands, adjust observing and controlling generator 2 rotors and main generator 1 rotor relative position.
When PTI operating mode, the position of magnetic pole of the armature rotating magnetic field of observing and controlling generator 2 is identical with the rotor field position of magnetic pole of main generator 1, and the armature voltage phase place and the observing and controlling generator 2 armature voltage phase differences that detect main generator 1 are exactly main generator 1 armature winding electromagnetic field position of magnetic pole and rotor field coil physics field pole alternate position spike.
Phase difference and speed discrepancy are detected by sync control device 3, because main generator 1 rotor speed is different from armature field rotating speed, so this phase difference changes.When speed discrepancy and phase difference reach requirement, by sync control device 3, send a throwing to encourage order to PTI, PTI excitation system is devoted oneself to work.
Embodiment 1: at main generator 1 anti-drive end, one observing and controlling generator 2 is installed, the rotor of observing and controlling generator 2 drives rotation by the rotor of main generator 1.
When main generator 1 moves starting as PTI mode, its control is:
Disconnect main generator 1 excitation system, Fig. 1 repeat circuit K disconnects;
Main generator 1 armature cable energising, main generator 1 starts asynchronous starting;
Main generating armature voltage is delivered to sync control device 3 by sampling cable;
Observing and controlling generator 2 is driven generating and is delivered to sync control device 3 by sampling cable by main generator 1;
3 pairs of main generators of sync control device, 1 armature voltage phase place and frequency and observing and controlling generator 2 voltage-phases and frequency compare;
When main generator 1 armature field rotating speed (being frequency) and voltage-phase and observing and controlling generator 2 armature field rotating speeds (being frequency) and voltage phase difference reach requirement, engage relay K; Relay normally open contact is closed, connects main generator excitation system, and main generator pull-in step is moved.
To sum up, after the utility model PTI asynchronous starting, can accurately control to throw and encourage constantly, eliminate to throw and encourage impact, improve system security reliability.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (1)
1. control device is encouraged in a throwing, it is characterized in that: comprise main generator, observing and controlling generator and sync control device, described main generator is connected with described observing and controlling generator machinery, and described sync control device is connected with described observing and controlling generator with described main generator respectively by cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420005355.5U CN203851069U (en) | 2014-01-03 | 2014-01-03 | Excitation control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420005355.5U CN203851069U (en) | 2014-01-03 | 2014-01-03 | Excitation control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203851069U true CN203851069U (en) | 2014-09-24 |
Family
ID=51564036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420005355.5U Expired - Fee Related CN203851069U (en) | 2014-01-03 | 2014-01-03 | Excitation control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203851069U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529966A (en) * | 2014-09-29 | 2016-04-27 | 株洲变流技术国家工程研究中心有限公司 | Method of asynchronously starting electrically-excited synchronous motor by frequency converter |
-
2014
- 2014-01-03 CN CN201420005355.5U patent/CN203851069U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529966A (en) * | 2014-09-29 | 2016-04-27 | 株洲变流技术国家工程研究中心有限公司 | Method of asynchronously starting electrically-excited synchronous motor by frequency converter |
| CN105529966B (en) * | 2014-09-29 | 2019-04-16 | 株洲变流技术国家工程研究中心有限公司 | A kind of method of frequency converter asynchronous starting electric excitation synchronous motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171225 Address after: 212009 Zhenjiang city in Jiangsu Province Economic Development Zone South Road two Patentee after: ZHENJIANG SAIERNICO AUTOMATION Co.,Ltd. Address before: Zhenjiang City, Jiangsu Province, 212009 South Road, Dingmao economic development zone two Patentee before: ZHENJIANG SAIERNICO ELECTRIC & AUTOMATION Co.,Ltd. |
|
| 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: 20140924 |