CN107332417A - 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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- CN107332417A CN107332417A CN201710537411.8A CN201710537411A CN107332417A CN 107332417 A CN107332417 A CN 107332417A CN 201710537411 A CN201710537411 A CN 201710537411A CN 107332417 A CN107332417 A CN 107332417A
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- China
- Prior art keywords
- asynchronous generator
- bus
- excitation
- common
- direct current
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/42—Asynchronous induction generators
- H02K17/44—Structural association with exciting machines
Abstract
The invention discloses a kind of ship direct current networking electric propulsion system based on asynchronous generator 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 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）Link together.With simple in construction, the advantage 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 based on asynchronous generator self-excitation
Direct current networking electric propulsion system.
Background technology
At present, the electric propulsion system of ship has started to use direct current networking electric propulsion system, and the system 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 produces DC voltage and the inversion that multichannel is parallel with direct current, common DC bus is provided for common DC bus
Frequency converter, each inversion changing frequency device is connected with respective propulsion electric machine, and each propulsion electric machine is connected with respective marine propeller.
Asynchronous generator has the advantages such as simple in construction, cost is low, reliability is high, is highly suitable for ship direct current networking electric propulsion system
System is used, but because the asynchronous generator in diesel generating set does not have excitation ability in itself, therefore asynchronous generator is needed
Excitation is provided by the frequency-variable module being connected on direct current network, in order to reach the effect for setting up excitation before power network is not yet set up
Really, generally require increases additional excitation unit 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.But it is outer
Plus the increase of excitation unit can cause the complexity of system and the raising of input cost.
The content of the invention
The invention provides a kind of ship direct current networking electric propulsion system 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
Need the technical problem of 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, build a structure equivalent to
One magneto coaxial with asynchronous generator, but its rated power is significantly lower than asynchronous generator rated power, it is only necessary to
Meet as the power needed for dc bus power network provides preliminary filling.When in ship direct current networking electric propulsion system diesel engine starting it
Asynchronous generator armature spindle high-speed rotation is driven afterwards, and now the permanent magnet pole with asynchronous generator rotor coaxial will be cut
The Exciting Windings for Transverse Differential Protection set on the stator of asynchronous generator, Exciting Windings for Transverse Differential Protection can produce electric current, the voltage of Exciting Windings for Transverse Differential Protection output by handing over-
It is the charging of ship direct current networking electric propulsion system common DC bus after straight rectifier, afterwards, common DC bus voltage leads to
After the rectification variable-frequency device for crossing each generator loop exciting current is provided for each generator.
The concrete structure of the present invention is to drive an asynchronous generator to be generated electricity using diesel engine, turn of asynchronous generator
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 bus；The rectification variable-frequency device of respective AC-DC, the exchange are also associated with the output end 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 with the common DC bus, by inversion changing frequency device export be constant frequency voltage,
Respective Ship Propeling motor is connected with 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 all the time
On optimum power efficiency point, that is, it is under preferably fuel oil use state, greatly reduces the oil consumption of diesel engine.
Especially since by the way of common DC bus, making the change of load can be by the rotating speed of asynchronous generator come flexibly
Adjust linearly, the fluctuation without causing common DC bus DC voltage, and then also do not interfere with ship and respectively use
The normal operation of power network.
A kind of ship direct current networking electric propulsion system based on asynchronous generator 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 on common DC bus, is being promoted mainly
Main propulsion motor is connected with stepper motor inversion changing frequency device output end, main thruster is connected with the output shaft of main propulsion motor；
Side propulsion electric machine is connected with the output end of side propulsion electric machine inversion changing frequency device, is connected with the output shaft of side propulsion electric machine
Side propeller, is connected with the daily transformer inversion changing frequency device of ship on common DC bus, in the daily transformer inversion of ship
Transformer is connected with the output end of frequency converter, the daily load of ship is connected with the output end of transformer.
The first rectification variable-frequency device and the second rectification variable-frequency device are connected with common DC bus, in the first rectification variable-frequency device
Input on be connected with the first asynchronous generator, the rotating shaft of the first asynchronous generator and be connected with the first diesel engine, second
It is connected with the input of rectification variable-frequency device in the second asynchronous generator, the rotating shaft of the second asynchronous generator and is connected with the second diesel oil
The first permanent magnet pole is provided with machine, 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 on common DC bus by the first rectifier, 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 with the stator of the second asynchronous generator,
Two Exciting Windings for Transverse Differential Protection are connected on common DC bus by the second rectifier.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
The technical problem of excitation itself can not be realized, and is used in ship direct current networking electric propulsion system diesel generating set, relatively
In increasing the scheme of extra excitation unit in ship direct current networking electric propulsion system, with simple in construction, system cost
The advantage such as low and number of devices is few.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
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 generator 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 on common DC bus 14, is being promoted mainly
Be connected with main propulsion motor 5 in the output end of stepper motor inversion changing frequency device 4, the output shaft of main propulsion motor 5 be connected with promote mainly into
Device 15；Side propulsion electric machine 10 is connected with the output end of side propulsion electric machine inversion changing frequency device 9, the output of propulsion electric machine 10 in side
Side propeller 16 is connected with axle, the daily transformer inversion changing frequency device 11 of ship is connected with common DC bus 14, in ship
Transformer 12 is connected with the output end of the daily transformer inversion changing frequency device 11 of oceangoing ship, ship is connected with the output end of transformer 12
The daily load 13 of oceangoing ship.
The first rectification variable-frequency device 3 and the second rectification variable-frequency device 8 are connected with common DC bus 14, is become in the first rectification
It is connected with the input of frequency device 3 in first asynchronous generator 2, the rotating shaft of the first asynchronous generator 2 and is connected with the first diesel engine
1, it is connected with the second asynchronous generator 7, the rotating shaft of the second asynchronous generator 7 and connects on the input of the second rectification variable-frequency device 8
It is connected on the second diesel engine 6, the armature spindle of the first asynchronous generator 2 and is provided with the first permanent magnet pole, in the first asynchronous generating
The first Exciting Windings for Transverse Differential Protection 17 is provided with 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 bus 14, the second permanent magnet pole is provided with 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 with son, the second Exciting Windings for Transverse Differential Protection 19 is connected to common DC bus 14 by the second rectifier 20
On.
The job 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 rotor of the first asynchronous generator 2 to rotate, 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 produce voltage, and the control source of generation gives the first rectifier 18, the first rectifier 18 by its
The voltage for changing into 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
The step asynchronous generator 7 of generator 2 and second has just can be generated electricity after exciting current, produced electric current, then, then led to respectively
It is that common DC bus 14 is powered to cross the first rectification variable-frequency device 3 and the second rectification variable-frequency device 8, and 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
Powered for marine main propulsion motor 5, side propulsion electric machine 10 and the daily load 13 of ship.
Claims (2)
1. a kind of ship direct current networking electric propulsion system based on asynchronous generator 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）, it is whole first
Flow frequency converter（3）Input on be connected with the first asynchronous generator（2）, the first asynchronous generator（2）Rotating shaft on be connected with
First diesel engine（1）, in the second rectification variable-frequency device（8）Input on be connected with the second asynchronous generator（7）, the second asynchronous hair
Motor（7）Rotating shaft on be connected with the second diesel engine（6）, it is characterised in that：In the first asynchronous generator（2）Armature spindle on set
The first permanent magnet pole is equipped with, in the first asynchronous generator（2）Stator on be provided with the first Exciting Windings for Transverse Differential Protection（17）, the first excitation
Winding（17）It is by the first rectifier（18）With common DC bus（14）Link together, in the second asynchronous generator
（7）Armature spindle on be provided with the second permanent magnet pole, in the second asynchronous generator（7）Stator on be provided with the second excitation around
Group（19）, the second Exciting Windings for Transverse Differential Protection（19）It is by the second rectifier（20）With common DC bus（14）Link together.
2. a kind of ship direct current networking electric propulsion system based on asynchronous generator self-excitation according to claim 1,
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 |
|---|---|---|---|
| CN201710537411.8A CN107332417A (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 |
|---|---|---|---|
| CN201710537411.8A CN107332417A (en) | 2017-06-29 | 2017-06-29 | Ship direct current networking electric propulsion system based on asynchronous machine self-excitation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107332417A true CN107332417A (en) | 2017-11-07 |
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|---|---|---|---|
| CN201710537411.8A Pending CN107332417A (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 (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109927872A (en) * | 2019-04-02 | 2019-06-25 | 山西汾西重工有限责任公司 | Ship direct current networking electric propulsion equipment, system and equipment designing method |
| CN110048395A (en) * | 2018-01-15 | 2019-07-23 | 中车永济电机有限公司 | Fishing boat power supply system |
| CN113113935A (en) * | 2021-03-08 | 2021-07-13 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Power control method for asynchronous power generation system of direct-current power station |
-
2017
- 2017-06-29 CN CN201710537411.8A patent/CN107332417A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110048395A (en) * | 2018-01-15 | 2019-07-23 | 中车永济电机有限公司 | Fishing boat power supply system |
| CN109927872A (en) * | 2019-04-02 | 2019-06-25 | 山西汾西重工有限责任公司 | Ship direct current networking electric propulsion equipment, system and equipment designing method |
| CN109927872B (en) * | 2019-04-02 | 2020-04-28 | 山西汾西重工有限责任公司 | Ship direct-current networking electric propulsion equipment, system and equipment design method |
| CN113113935A (en) * | 2021-03-08 | 2021-07-13 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Power control method for asynchronous power generation system of direct-current power station |
| CN113113935B (en) * | 2021-03-08 | 2022-05-31 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Power control method for asynchronous power generation system of direct-current power station |
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Address after: 030027 131 Heping North Road, wanBerlin District, Taiyuan, Shanxi Applicant after: Shanxi Fenxi Heavy Industry Co., Ltd. Applicant after: Wuxi SEI million Electrical Technology Co., Ltd. Address before: No. 131, Heping North Road, Taiyuan, Shanxi Province, Shanxi Applicant before: Shanxi Fenxi Heavy Industry Co., Ltd. Applicant before: Beijing CSE Electric Technology Co., Ltd. |