CN207559825U - Ship direct current networking electric propulsion system based on asynchronous machine self-excitation - Google Patents
Ship direct current networking electric propulsion system based on asynchronous machine self-excitation Download PDFInfo
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- CN207559825U CN207559825U CN201720775017.3U CN201720775017U CN207559825U CN 207559825 U CN207559825 U CN 207559825U CN 201720775017 U CN201720775017 U CN 201720775017U CN 207559825 U CN207559825 U CN 207559825U
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- 230000006855 networking Effects 0.000 title claims abstract description 21
- 238000004804 winding Methods 0.000 claims abstract description 24
- 230000005284 excitation Effects 0.000 abstract description 13
- 239000002283 diesel fuel Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
Abstract
The utility model discloses a kind of ship direct current networking electric propulsion systems based on asynchronous machine self-excitation, solve in spot ship direct current networking electric propulsion system asynchronous generator in itself without excitation ability can not complete independently generator operation, and the problem of need additional excitation circuit.Including common DC bus（14）, in common DC bus（14）On be connected with the first rectification variable-frequency device（3）, in the first rectification variable-frequency device（3）Input terminal on be connected with the first asynchronous generator（2）, in the first asynchronous generator（2）Armature spindle on be provided with the first permanent magnet pole, in the first asynchronous generator（2）Stator on be provided with the first Exciting Windings for Transverse Differential Protection（17）, the first Exciting Windings for Transverse Differential Protection（17）It is by the first rectifier（18）With common DC bus（14）It links together.With simple in structure, the advantages such as system cost is low and number of devices is few.
Description
Technical field
The present invention relates to a kind of ship power propulsion system, more particularly to a kind of ship straight based on asynchronous machine self-excitation
Flow networking electric propulsion system.
Background technology
At present, the electric propulsion system of ship has started using direct current networking electric propulsion system, which is by diesel oil
Generating set, common DC bus, frequency converter and propulsion system composition.Direct current networking electric propulsion system is driven by diesel engine
Asynchronous generator generates DC voltage and provides direct current for common DC bus, and the inversion of multichannel is parallel on common DC bus
Frequency converter, each inversion changing frequency device are connected with respective propulsion electric machine, and each propulsion electric machine is connect with respective marine propeller.
Asynchronous generator has the advantages such as simple in structure, at low cost, reliability is high, is highly suitable for ship direct current networking electric propulsion system
System is used, but since the asynchronous generator in diesel generating set is in itself there is no excitation ability, asynchronous generator needs
Excitation is provided by the frequency-variable module being connected on DC grid, in order to reach the effect for establishing excitation before power grid is not yet established
Fruit, generally require increases the outer excitation unit added in direct current networking electric propulsion system, by additional excitation unit to public
Dc bus electric discharge can enter the working condition of generator so as to provide exciting current for asynchronous generator.It is but outer
The increase of the excitation unit added can cause the complexity of system and the raising of input cost.
Invention content
The present invention provides a kind of ship direct current networking electric propulsion systems based on asynchronous machine self-excitation, solve existing
Have in ship direct current networking electric propulsion system asynchronous generator in itself without excitation ability can not complete independently generator operation, and
The technical issues of needing additional excitation circuit.
The present general inventive concept is：In the asynchronous generator of ship direct current networking electric propulsion system diesel generating set
Armature spindle on increase permanent magnet pole, Exciting Windings for Transverse Differential Protection is set on the stator of asynchronous generator, and one structure of structure is equivalent to
One permanent magnet generator coaxial with asynchronous generator, but its rated power is significantly lower than asynchronous generator rated power, it is only necessary to
The power provided for dc bus power grid needed for preliminary filling is provided.When in ship direct current networking electric propulsion system diesel engine starting it
Asynchronous generator armature spindle high-speed rotation is driven afterwards, will be cut with the permanent magnet pole of asynchronous generator rotor coaxial at this time
The Exciting Windings for Transverse Differential Protection set on the stator of asynchronous generator, Exciting Windings for Transverse Differential Protection can generate electric current, the voltage of Exciting Windings for Transverse Differential Protection output by hand over-
It charges after straight rectifier for ship direct current networking electric propulsion system common DC bus, later, common DC bus voltage leads to
It crosses after the rectification variable-frequency device in each generator circuit and provides exciting current for each generator.
The concrete structure of the present invention is an asynchronous generator to be driven to generate electricity using diesel engine, and asynchronous generator turns
Increase permanent magnet pole on son, the Exciting Windings for Transverse Differential Protection set on the stator of asynchronous generator is connected to public direct-current by rectifier
On busbar；The rectification variable-frequency device of respective AC to DC, the exchange are also associated on the output terminal of every asynchronous generator
The rectification variable-frequency device of inversion of direct current uses the active rectification based on IGBT, and the direct current after rectification is electrically connected on common DC bus,
Multiple inversion changing frequency devices are parallel on the common DC bus, by inversion changing frequency device output be constant frequency voltage,
Respective Ship Propeling motor is connected on each inversion changing frequency device, each Ship Propeling motor connects with respective marine propeller
It is connected together.When ship load change when, can every diesel engine of dynamic regulation rotating speed, control diesel engine operate in always
It on optimum power efficiency point, that is, is under preferable fuel oil use state, greatly reduces the oil consumption of diesel engine.
Especially since by the way of common DC bus, make the variation of load can be by the rotating speed of asynchronous generator come flexibly
It adjusts linearly, the fluctuation without causing common DC bus DC voltage, and then will not influence on ship and respectively use
The normal operation of power grid.
A kind of ship direct current networking electric propulsion system based on asynchronous machine self-excitation, including common DC bus,
Main propulsion motor inversion changing frequency device 4 and side propulsion electric machine inversion changing frequency device are connected separately on common DC bus, promote mainly into
Main propulsion motor is connected on motor inversion changing frequency device output terminal, main thruster is connected in the output shaft of main propulsion motor；
Side propulsion electric machine is connected on the output terminal of side propulsion electric machine inversion changing frequency device, side is connected on the output shaft of side propulsion electric machine
Propeller is connected with the daily transformer inversion changing frequency device of ship on common DC bus, becomes in the daily transformer inversion of ship
Transformer is connected on the output terminal of frequency device, the daily load of ship is connected on the output terminal of transformer.
The first rectification variable-frequency device and the second rectification variable-frequency device are connected on common DC bus, in the first rectification variable-frequency device
Input terminal on be connected with the first asynchronous generator, the first diesel engine is connected in the shaft of the first asynchronous generator, second
The second asynchronous generator is connected on the input terminal of rectification variable-frequency device, the second diesel oil is connected in the shaft of the second asynchronous generator
Machine is provided with the first permanent magnet pole on the armature spindle of the first asynchronous generator, is set on the stator of the first asynchronous generator
There is the first Exciting Windings for Transverse Differential Protection, the first Exciting Windings for Transverse Differential Protection is connected to by the first rectifier on common DC bus, the second asynchronous generator
Armature spindle on be provided with the second permanent magnet pole, the second Exciting Windings for Transverse Differential Protection is provided on the stator of the second asynchronous generator,
Two Exciting Windings for Transverse Differential Protection are connected to by the second rectifier on common DC bus.First Exciting Windings for Transverse Differential Protection is wound around the first asynchronous generating
On the shell of machine；Second Exciting Windings for Transverse Differential Protection is wound around on the shell of the second asynchronous generator.
The present invention solves asynchronous generator using the scheme of one permanent magnet generator structure of structure is increased in asynchronous generator
It itself can not realize the technical issues of excitation, and be used in ship direct current networking electric propulsion system diesel generating set, relatively
In the scheme for increasing additional excitation unit in ship direct current networking electric propulsion system, there is simple in structure, system cost
The advantages such as low and number of devices is few.
Description of the drawings
Fig. 1 is the structure diagram of the present invention.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings：
A kind of ship direct current networking electric propulsion system based on asynchronous machine self-excitation, including common DC bus 14,
Main propulsion motor inversion changing frequency device 4 and side propulsion electric machine inversion changing frequency device 9 are connected separately on common DC bus 14, in master
Main propulsion motor 5 is connected on 4 output terminal of propulsion electric machine inversion changing frequency device, is connected with and promotes mainly in the output shaft of main propulsion motor 5
Into device 15；Side propulsion electric machine 10 is connected on the output terminal of side propulsion electric machine inversion changing frequency device 9, propulsion electric machine 10 is defeated in side
Side propeller 16 is connected on shaft, the daily transformer inversion changing frequency device 11 of ship is connected on common DC bus 14,
Transformer 12 is connected on the output terminal of the daily transformer inversion changing frequency device 11 of ship, is connected on the output terminal of transformer 12
The daily load 13 of ship.
The first rectification variable-frequency device 3 and the second rectification variable-frequency device 8 are connected on common DC bus 14, is become in the first rectification
The first asynchronous generator 2 is connected on the input terminal of frequency device 3, the first diesel engine is connected in the shaft of the first asynchronous generator 2
1, the second asynchronous generator 7 is connected on the input terminal of the second rectification variable-frequency device 8, is connected in the shaft of the second asynchronous generator 7
The second diesel engine 6 is connected to, the first permanent magnet pole is provided on the armature spindle of the first asynchronous generator 2, in the first asynchronous generating
The first Exciting Windings for Transverse Differential Protection 17 is provided on the stator of machine 2, the first Exciting Windings for Transverse Differential Protection 17 is connected to public direct-current by the first rectifier 18
On busbar 14, the second permanent magnet pole is provided on the armature spindle of the second asynchronous generator 7, in determining for the second asynchronous generator 7
The second Exciting Windings for Transverse Differential Protection 19 is provided on son, the second Exciting Windings for Transverse Differential Protection 19 is connected to common DC bus 14 by the second rectifier 20
On.
The work step of the diesel generating set of ship direct current networking electric propulsion system is as follows in the present invention：When the first bavin
After oil machine 1 starts, the crankshaft-link rod of the first diesel engine 1 drives the rotation of 2 rotor of the first asynchronous generator, in the first asynchronous generator
The first permanent magnet pole the first excitation that is set on the stator of the first asynchronous generator 2 of cutting set on 2 armature spindle around
Group 17, the first permanent magnetism winding 17 will generate voltage, the control source of generation to the first rectifier 18, the first rectifier 18 by its
The voltage for being converted to frequency and constant amplitude is transported to common DC bus 14, and common DC bus 14 again passes through voltage respectively
First rectification variable-frequency device 3 and the second rectification variable-frequency device 8 are conveyed to the first asynchronous generator 2 and the second asynchronous generator 7, and first is different
Step 2 and second asynchronous generator 7 of generator can generate electricity after having exciting current, generate electric current, then, then lead to respectively
It crosses the first rectification variable-frequency device 3 and the second rectification variable-frequency device 8 to be powered for common DC bus 14, common DC bus 14 divides again
Do not pass through main propulsion motor inversion changing frequency device 4, side propulsion electric machine inversion changing frequency device 9 and the daily transformer inversion changing frequency device 11 of ship
For marine main propulsion motor 5, side propulsion electric machine 10 and daily 13 power supply of load of ship.
Claims (2)
1. a kind of ship direct current networking electric propulsion system based on asynchronous machine self-excitation, including common DC bus（14）,
In common DC bus（14）On be connected with the first rectification variable-frequency device（3）With the second rectification variable-frequency device（8）, in the first rectification variable-frequency
Device（3）Input terminal on be connected with the first asynchronous generator（2）, the first asynchronous generator（2）Shaft on be connected with the first bavin
Oil machine（1）, in the second rectification variable-frequency device（8）Input terminal on be connected with the second asynchronous generator（7）, the second asynchronous generator
（7）Shaft on be connected with the second diesel engine（6）, it is characterised in that：In the first asynchronous generator（2）Armature spindle on be provided with
First permanent magnet pole, in the first asynchronous generator（2）Stator on be provided with the first Exciting Windings for Transverse Differential Protection（17）, the first Exciting Windings for Transverse Differential Protection
（17）It is by the first rectifier（18）With common DC bus（14）It links together, in the second asynchronous generator（7）'s
The second permanent magnet pole is provided on armature spindle, in the second asynchronous generator（7）Stator on be provided with the second Exciting Windings for Transverse Differential Protection
（19）, the second Exciting Windings for Transverse Differential Protection（19）It is by the second rectifier（20）With common DC bus（14）It links together.
2. a kind of ship direct current networking electric propulsion system based on asynchronous machine self-excitation according to claim 1,
It is characterized in that, the first Exciting Windings for Transverse Differential Protection（17）It is wound around the first asynchronous generator（2）Shell on；Second Exciting Windings for Transverse Differential Protection（19）
It is wound around the second asynchronous generator（7）Shell on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720775017.3U CN207559825U (en) | 2017-06-29 | 2017-06-29 | Ship direct current networking electric propulsion system based on asynchronous machine self-excitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720775017.3U CN207559825U (en) | 2017-06-29 | 2017-06-29 | Ship direct current networking electric propulsion system based on asynchronous machine self-excitation |
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| Publication Number | Publication Date |
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| CN207559825U true CN207559825U (en) | 2018-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720775017.3U Active CN207559825U (en) | 2017-06-29 | 2017-06-29 | Ship direct current networking electric propulsion system based on asynchronous machine self-excitation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111301655A (en) * | 2020-03-18 | 2020-06-19 | 无锡赛思亿电气科技有限公司 | Ship electric propulsion and control system and monitoring control and safety evaluation method thereof |
-
2017
- 2017-06-29 CN CN201720775017.3U patent/CN207559825U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111301655A (en) * | 2020-03-18 | 2020-06-19 | 无锡赛思亿电气科技有限公司 | Ship electric propulsion and control system and monitoring control and safety evaluation method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 030027 131 Heping North Road, wanBerlin District, Taiyuan, Shanxi Co-patentee after: WUXI SILENT ELECTRIC SYSTEM (SES) TECHNOLOGY Co.,Ltd. Patentee after: SHANXI FENXI HEAVY INDUSTRY Co.,Ltd. Address before: No. 131, Heping North Road, Taiyuan, Shanxi Province, Shanxi Co-patentee before: BEIJING CSE ELECTRICAL SCIENCE & TECHNOLOGY CO.,LTD. Patentee before: SHANXI FENXI HEAVY INDUSTRY Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 030027 131 Heping North Road, wanBerlin District, Taiyuan, Shanxi Patentee after: China State Shipbuilding Corporation Fenxi Heavy Industry Co.,Ltd. Guo jiahuodiqu after: Zhong Guo Patentee after: China Shipbuilding Saisiyi (Wuxi) Electrical Technology Co.,Ltd. Address before: 030027 131 Heping North Road, wanBerlin District, Taiyuan, Shanxi Patentee before: SHANXI FENXI HEAVY INDUSTRY Co.,Ltd. Guo jiahuodiqu before: Zhong Guo Patentee before: WUXI SILENT ELECTRIC SYSTEM (SES) TECHNOLOGY Co.,Ltd. |