CN109484602A - Bavin electric mixed dynamic system based on spacing paddle - Google Patents
Bavin electric mixed dynamic system based on spacing paddle Download PDFInfo
- Publication number
- CN109484602A CN109484602A CN201710819291.0A CN201710819291A CN109484602A CN 109484602 A CN109484602 A CN 109484602A CN 201710819291 A CN201710819291 A CN 201710819291A CN 109484602 A CN109484602 A CN 109484602A
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- diesel engine
- electric machine
- bavin
- dynamic system
- mixed dynamic
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- 230000002441 reversible effect Effects 0.000 claims abstract description 75
- 238000010248 power generation Methods 0.000 claims abstract description 14
- 230000009467 reduction Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 9
- 230000005611 electricity Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/20—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/20—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units
- B63H2021/202—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units of hybrid electric type
- B63H2021/205—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units of hybrid electric type the second power unit being of the internal combustion engine type, or the like, e.g. a Diesel engine
Abstract
The invention discloses a kind of bavin electric mixed dynamic systems based on spacing paddle, bavin electric mixed dynamic system includes diesel engine, generator, clutch, reversible electric machine, frequency converter, spacing paddle and control device, wherein, spacing paddle is connect with reversible electric machine, diesel engine is connect via clutch with reversible electric machine, generator is connect via frequency converter with reversible electric machine, and control device is constructed so that bavin electric mixed dynamic system individually promotes mode, generator individually to promote in mode, diesel engine and generator and vehicle propulsion mode and reversible electric machine power generation mode and switches in diesel engine.Bavin electric mixed dynamic system according to the present invention based on spacing paddle, different operational modes can be set according to the different operating condition of ship, being very suitable for tugboat, trawler etc., there is underloading and the ship of heavily loaded both of which to promote host installed power, energy conservation and environmental protection, good economy performance, mobility good, it can be achieved that reducing.
Description
Technical field
The present invention relates to machinery field more particularly to a kind of bavin electric mixed dynamic systems based on spacing paddle.
Background technique
Hybrid power is a kind of novel ship power Promoting Form, it promotes mechanical (diesel engine) and electric power (generates electricity
Machine) combination is promoted, according to different operating conditions, switch diesel engine and reversible electric machine driving propeller, or both in due course simultaneously
Drive propeller.
Currently, domestic minority ship has started using bavin electric mixed dynamic system, such as Guangdong sea train ferry, 5000 tons of public affairs
Ship, tuna long liner, Zhejiang Ocean university scientific investigation ship etc..But these ships largely use tuning for Controllable Pitch Propeller, wherein diesel engine
Tuning for Controllable Pitch Propeller is all based on the bavin electric mixed dynamic system of motor and vehicle function.
There are more mature ship in offshore company, such as watt Ceylon, Man En, Siemens, Rolls-Roy Si, Caterpillar
Oceangoing ship bavin electricity mixed power device solution, and obtained more application, but be limited to business secret, it is external not disclosed to deliver
Relevant technical literature, rarely seen each major company's Descriptive introduction data.Same diesel engine and motor and the bavin electricity of vehicle function mix dynamic
Force system is all based on tuning for Controllable Pitch Propeller.
The blade of tuning for Controllable Pitch Propeller can be rotated, i.e., screw pitch is adjustable, and invariablenes turning speed may be implemented, and change propeller by changing screw pitch
Absorb watt level.And the screw pitch of spacing paddle is fixed, and needs to change propeller absorption power by changing revolving speed.
Although having been realized in hybrid power in spot ship, which is only applicable to tuning for Controllable Pitch Propeller,
And spacing paddle cannot be applicable in.
Accordingly, it is desirable to provide a kind of bavin electric mixed dynamic system based on spacing paddle, is mentioned above at least being partially solved
To the problem of.
Summary of the invention
A series of concept of reduced forms is introduced in Summary, this will in the detailed description section into
One step is described in detail.Summary of the invention is not meant to attempt to limit technical solution claimed
Key feature and essential features do not mean that the protection scope for attempting to determine technical solution claimed more.
In order at least be partially solved the above problem, the invention discloses a kind of bavin electricity mixed power system based on spacing paddle
System, which is characterized in that the bavin electric mixed dynamic system includes diesel engine, generator, clutch, reversible electric machine, frequency converter, determines
Away from paddle and control device,
Wherein, the spacing paddle is connect with the reversible electric machine, the diesel engine via the clutch with it is described reversible
Motor connection, the generator are connect via the frequency converter with the reversible electric machine, and the control device is constructed so that institute
It states bavin electric mixed dynamic system and individually promotes mode, generator individually to promote mode, diesel engine and generator and vehicle in diesel engine
Switch in propulsion mode and reversible electric machine power generation mode.
Bavin electric mixed dynamic system according to the present invention based on spacing paddle can be set according to the different operating condition of ship
Different operational modes is set, being very suitable for tugboat, trawler etc. has the ship of underloading and heavily loaded both of which, it can be achieved that drop
Low propulsion host installed power, energy conservation and environmental protection, good economy performance, mobility are good.Pass through reasonable disposition diesel engine, reversible electric machine and hair
The power of motor can substitute ship electrical power generators by reversible electric machine, reduce oil consumption, improve discharge in economy navigation；?
When shipping high speed navigates by water, directly promoted using diesel engine；In lowsteaming, directly driven by marine generator power supply reversible
Motor operation realizes marine electric power propulsion navigation, can reduce oil consumption, and improve the redundancy of dynamical system in electric model；
Under ship heavy duty working condition, reversible electric machine is by marine generator powered operation in PTI mode and promotion diesel engine and through transport
Row drives same shafting propeller jointly, promotes the output power of driving shafting, and then improve the motor-driven of ship power system
Property.
Optionally, the spacing paddle has reduction gearing.
Optionally, the diesel engine is connect by shaft coupling with the clutch.
Optionally, the diesel engine and the reversible electric machine are coaxially disposed.
Optionally, the reversible electric machine is connect via shafting with the spacing paddle.
Optionally, in the diesel engine individually propulsion mode, the diesel engine works and drives the spacing paddle, described
Generator does not drive the spacing paddle.
Optionally, in the generator individually propulsion mode, electrical power generators and via the frequency converter and institute
It states reversible electric machine and drives the spacing paddle, the diesel engine does not drive the spacing paddle.
Optionally, in the diesel engine and generator and vehicle propulsion mode, the diesel engine work and drive it is described fixed
Away from paddle, the electrical power generators simultaneously drive the spacing paddle via the frequency converter and the reversible electric machine.
Optionally, in the reversible electric machine power generation mode, the diesel engine works and drives the reversible electric machine to produce
Raw electric energy.
Optionally, the spacing paddle is the spacing rudder paddle with bevel gear.
Detailed description of the invention
The following drawings of embodiment of the present invention is incorporated herein as part of the present invention for the purpose of understanding the present invention.Show in attached drawing
Embodiments of the present invention and its description, principle used to explain the present invention are gone out.In the accompanying drawings,
Fig. 1 is a kind of system of the bavin electric mixed dynamic system based on spacing paddle of preferred embodiment according to the present invention
Block diagram, it illustrates the system block diagrams that diesel engine individually promotes mode；
Fig. 2 is the system block diagram that generator individually promotes mode；
Fig. 3 is the system block diagram that diesel engine and generator and vehicle promote mode；And
Fig. 4 is the system block diagram of reversible electric machine power generation mode.
Specific embodiment
In the following description, a large amount of concrete details are given so as to provide a more thorough understanding of the present invention.So
And it will be apparent to one skilled in the art that embodiment of the present invention may not need it is one or more of these thin
It saves and is carried out.In other examples, in order to avoid obscuring with embodiment of the present invention, for well known in the art
Some technical characteristics are not described.
In order to thoroughly understand embodiment of the present invention, detailed structure will be proposed in following description.Obviously, of the invention
The execution of embodiment is not limited to the specific details that those skilled in the art is familiar with.Better embodiment of the invention
It is described in detail as follows, however other than these detailed descriptions, the present invention can also have other embodiments.
As shown in Figure 1, the bavin electric mixed dynamic system according to the present invention based on spacing paddle includes diesel engine 10, power generation
Machine 20, clutch 30, reversible electric machine 40, frequency converter 50, spacing paddle 60 and control device.
Spacing paddle 60 is connect with reversible electric machine 40, and can be rotated under the driving of reversible electric machine 40.Spacing paddle 60 is spiral shell
Away from fixed propeller, using extensive, it can pass through to change revolving speed and realize to adjust and absorb power.Optionally, reversible electric machine 40 via
Shafting is connect with spacing paddle 60.
Diesel engine 10 is connect via clutch 30 with reversible electric machine 40.For example, diesel engine 10 can pass through highly elastic shaft coupling
(not shown) is connect with clutch 30, and diesel engine 10 can be coaxially disposed with reversible electric machine 40, non-gear box connection.In other words
It says, diesel engine 10 is not via gearbox speed reduction.
Generator 20 is connect via frequency converter 50 with reversible electric machine 40, and further, the quantity of generator 20 can be according to need
It is arranged, two generators 20 shown in multiple or such as Fig. 1 can be connected in parallel to busbar connector (power distribution equipment).Busbar connector electrical connection
To frequency converter 50, frequency converter 50 is electrically connected to reversible electric machine 40.
The control of 40 revolving speed of reversible electric machine may be implemented in frequency converter 50, to carry out power control.Frequency converter 50 can be adjusted
The power distribution of reversible electric machine 40 and diesel engine 10 is saved, so that realize reversible electric machine 40 and diesel engine 10 and vehicle is run.
Control device is constructed so that bavin electric mixed dynamic system individually promotes mode, generator individually to promote in diesel engine
Mode (PTH, Power Take me Home), diesel engine and generator and vehicle promote mode (PTI, Power Take In) with
And switching in reversible electric machine power generation mode (PTO, Power Take Off).
The propulsion mode of bavin electric mixed dynamic system based on spacing paddle 60 will be now discussed respectively:
Diesel engine individually promotes mode
As shown in Figure 1, it illustrates the diesel engines of the bavin electric mixed dynamic system based on spacing paddle 60 individually to promote mode
System block diagram, arrow direction shown in Fig. 1 indicates power output flow direction.
In diesel engine individually propulsion mode, the work of diesel engine 10 simultaneously drives reversible electric machine 40 via clutch 30, goes forward side by side
One step drives spacing paddle 60 to rotate.Generator 20 does not drive spacing paddle 60.Such as in ship when low load towing operation,
Diesel engine can be used individually to promote.
Generator individually promotes mode (PTH)
As shown in Fig. 2, it illustrates the generators of the bavin electric mixed dynamic system based on spacing paddle 60 individually to promote mode
System block diagram, it is similar to Fig. 1, arrow direction shown in Fig. 2 indicate power output flow direction.
In generator individually propulsion mode, the power generation of generator 20 simultaneously drives spacing via frequency converter 50 and reversible electric machine 40
Paddle 60, diesel engine 10 do not drive spacing paddle 60.
Motor promotes mode to be mainly used for ship output low thrust (such as in marine low speed free running) or diesel engine
In the case where 10 failures, 20 groups of generator by electric energy by driving spacing paddle after busbar connector 70, frequency converter 50 and reversible electric machine 40
60。
Since the screw pitch of spacing paddle 60 is non-adjustable, with it is traditional use the scheme of displacement paddle compared with, tune can not be passed through
Screw pitch is saved to control thrust size.Present embodiment passes through the revolving speed of 50 frequency control reversible electric machine 40 of frequency converter, to realize
It is preferably matched with spacing paddle 60, improves the handling of ship.In addition, generator 20 can also be augmented thrust device and life
Use load supplying.
Diesel engine and generator and vehicle propulsion mode (PTI)
As shown in figure 3, it illustrates the diesel engine of the bavin electric mixed dynamic system based on spacing paddle 60 and generator and vehicles
The system block diagram of propulsion mode, similar to Fig. 1, arrow direction shown in Fig. 3 indicates power output flow direction.
In diesel engine and generator and vehicle propulsion mode, diesel engine 10 works and drives reversible electric machine 40 and spacing paddle
60, the power generation of generator 20 simultaneously drives spacing paddle 60 via frequency converter 50 and reversible electric machine 40.
Such as in ship top load towing operation, diesel engine 10 and reversible electric machine 40 can be used and vehicle promotes.This
Embodiment realizes diesel engine 10 and reversible electric machine 40 by frequency converter 50 and vehicle is run.Since reversible electric machine 40 can provide
The thrust of auxiliary, thus diesel engine 10 can choose the small model of power, save construction funds, save dimension of ship space and
Energy conservation reduces fuel consumption (this is especially significant for the engineering ship of some tugboat classes).And traditional scheme is not because have
Have the presence of frequency converter 50, thus not can guarantee stable and turner condition or and vehicle after can not adjust reversible electric machine 40 and bavin
The power distribution of oil machine 10, thus cannot achieve reversible electric machine 40 and diesel engine 10 and vehicle run, and then ting model can not be selected
Diesel engine 10, energy saving is greatly lowered.Various operating conditions under the given speed of a ship or plane or the operation mode of setting simultaneously, all obtain
It is efficiently important, can be run at low load to avoid high power, the high fuel consumption rate of generation.
Reversible electric machine power generation mode (PTO)
As shown in figure 4, it illustrates the reversible electric machine power generation modes of the bavin electric mixed dynamic system based on spacing paddle 60
System block diagram, similar to Fig. 1, arrow direction shown in Fig. 4 indicates power output flow direction.
In reversible electric machine power generation mode, diesel engine 10 works and drives reversible electric machine 40 to produce electricl energy.This embodiment party
Formula thus can greatly extend reversible electric machine by the way that reversible electric machine 40 is incorporated to the main power grid of ship after 50 frequency modulation of frequency converter
40 applying working condition, such as can be powered to life with loading, makes full use of the power of diesel engine 10, and energy-saving effect is also greatly
It improves
It in slow-speed of revolution underload, is worked independently using motor, in moderate rotation and moderate duty, using diesel engine list
Solely work is worked together in high revolving speed high load capacity using diesel engine 10 and generator.When diesel engine works independently, at this time
If spacing paddle 60 is underloading, then some power margin, can be generated electricity by reversible electric machine 40 and provide electric power for ship.
Using low-speed diesel engine (300rpm or less), 60 revolving speed of spacing paddle is consistent with diesel engine speed at this time.And in
When high-speed diesel engine (300rpm or more) is used cooperatively, spacing paddle 60 needs to slow down at this time, and therefore, optionally, spacing paddle 60 has
Reduction gearing.
Further, spacing paddle 60 can be spacing rudder paddle.Rudder paddle is the spacing of 180 degree or greater angle flexible rotating
Paddle 60 may be provided with two pairs of bevel type gears inside rudder paddle, to realize the deceleration of input speed and rudder paddle revolving speed.
The present invention is by diesel engine 10 and 40 Combine control technical research of reversible electric machine, realizing diesel engine 10 and reversible
The reliable parallel running of motor 40 drives spacing paddle 60, improves the mobility of ship power system；By reversible electric machine 40 power generation and
Switching flexible, smooth between the different operational modes of reversible electric machine 40 is realized in motoring condition switching control technical research.
Wherein, diesel engine 10 and reversible electric machine 40 based on High Performance SCM programming and vehicle and sharing of load technology make
For the core control technology of whole device, the technology of apolegamy diesel engine 10, reversible electric machine 40 has been fully considered in the design process
Feature, performance parameter and the capacity for combining Ship Power Station, are arranged suitable Combine control strategy.Such as: diesel engine 10 and reversible electricity
The power difference of machine 40 is larger, and general recommendations limits power output and diesel engine 10 using reversible electric machine 40 and vehicle promotes (bavin at this time
10 output power of oil machine generally uses foot)；It, can be using proportional assignment when diesel engine 10 and little 40 power difference of reversible electric machine
The mode of load carries out and vehicle promotes.Diesel engine 10 is as the power device of reciprocating and the reversible electric machine 40 of rotary motion
It compares, either mechanical property or electrical characteristic difference is larger, and same rotational speed regulation amount implements to specific execution, intermediate
Response time difference is big, and this requires Combine control systems to use different accuracy, different sensitivity, difference to two control objects
It is synchronous to accomplish that the instruction of two control objects is fed back with information as far as possible for the Controlling model of execution cycle.
Bavin electricity mixed power device also needs to be connect according to the final function of component devices each in device after completing real ship installation
Mouth, technical parameter carry out design in auxiliary system, reasonable disposition fuel system, oil system, cooling water system, ventilating system, liquid
Pressure system etc. guarantees the reliability service of device.
Provided by the present invention mixed based on the reversible electric machine 40 of spacing paddle 60 with the bavin electricity of diesel engine 10 and vehicle propulsion is moved
Power device can adapt to the operation needs of Various Complex operating condition.Different fortune can be set according to the different operating condition of ship
Row mode is, it can be achieved that reduction promotion diesel engine installed power, energy conservation and environmental protection, good economy performance, mobility are good.
The technology for the bavin electricity mixed power device that reversible electric machine 40 and diesel engine 10 and vehicle based on spacing paddle 60 promote is special
Point, performance advantage will be converted to power-assisted, it is pushed to have the ship of underloading and heavily loaded both of which in tugboat, trawler etc.
On application.
Unless otherwise defined, technical and scientific term used herein and those skilled in the art of the invention
Normally understood meaning is identical.Term used herein is intended merely to describe specifically to implement purpose, it is not intended that limitation is originally
Invention.Terms such as herein presented " components " can both indicate single part, can also indicate the group of multiple parts
It closes.The terms such as herein presented " installation ", " setting " can both indicate that a component was attached directly to another component,
It can also indicate that a component is attached to another component by middleware.The feature described in one embodiment herein
It can be applied in combination another embodiment individually or with other feature, unless this feature is in the another embodiment
In be not suitable for or be otherwise noted.
The present invention is illustrated by above embodiment, but it is to be understood that, above embodiment is
Purpose for illustrating and illustrating, and be not intended to limit the invention within the scope of described embodiment.Art technology
Personnel are it is understood that introduction according to the present invention can also make more kinds of variants and modifications, these variants and modifications
All fall within the scope of the claimed invention.
Claims (10)
1. a kind of bavin electric mixed dynamic system based on spacing paddle, which is characterized in that the bavin electric mixed dynamic system includes bavin
Oil machine, generator, clutch, reversible electric machine, frequency converter, spacing paddle and control device,
Wherein, the spacing paddle is connect with the reversible electric machine, and the diesel engine is via the clutch and the reversible electric machine
Connection, the generator are connect via the frequency converter with the reversible electric machine, and the control device is constructed so that the bavin
Electric mixed dynamic system individually promotes mode, generator individually to promote mode, diesel engine and generator and vehicle propulsion in diesel engine
Switch in mode and reversible electric machine power generation mode.
2. bavin electric mixed dynamic system according to claim 1, which is characterized in that the spacing paddle has reduction gearing.
3. bavin electric mixed dynamic system according to claim 1, which is characterized in that the diesel engine passes through shaft coupling and institute
State clutch connection.
4. bavin electric mixed dynamic system according to claim 1, which is characterized in that the diesel engine and the reversible electric machine
Coaxial arrangement.
5. bavin electric mixed dynamic system according to claim 1, which is characterized in that the reversible electric machine is via shafting and institute
State the connection of spacing paddle.
6. bavin electric mixed dynamic system according to claim 1, which is characterized in that individually promote mode in the diesel engine
In, the diesel engine works and drives the spacing paddle, and the generator does not drive the spacing paddle.
7. bavin electric mixed dynamic system according to claim 1, which is characterized in that individually promote mode in the generator
In, the electrical power generators simultaneously drive the spacing paddle via the frequency converter and the reversible electric machine, and the diesel engine does not drive
Move the spacing paddle.
8. bavin electric mixed dynamic system according to claim 1, which is characterized in that in the diesel engine and generator and vehicle
In propulsion mode, the diesel engine works and drives the spacing paddle, electrical power generators and via the frequency converter and institute
It states reversible electric machine and drives the spacing paddle.
9. bavin electric mixed dynamic system according to claim 1, which is characterized in that in the reversible electric machine power generation mode
In, the diesel engine works and drives the reversible electric machine to produce electricl energy.
10. bavin electric mixed dynamic system according to claim 1, which is characterized in that the spacing paddle is with bevel gear
Spacing rudder paddle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710819291.0A CN109484602A (en) | 2017-09-12 | 2017-09-12 | Bavin electric mixed dynamic system based on spacing paddle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710819291.0A CN109484602A (en) | 2017-09-12 | 2017-09-12 | Bavin electric mixed dynamic system based on spacing paddle |
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| Publication Number | Publication Date |
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| CN109484602A true CN109484602A (en) | 2019-03-19 |
Family
ID=65687834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201710819291.0A Pending CN109484602A (en) | 2017-09-12 | 2017-09-12 | Bavin electric mixed dynamic system based on spacing paddle |
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| Country | Link |
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| CN (1) | CN109484602A (en) |
Cited By (3)
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| CN110552829A (en) * | 2019-09-17 | 2019-12-10 | 中船动力研究院有限公司 | Diesel engine electric starting device, starting method and ship |
| CN114735180A (en) * | 2022-04-13 | 2022-07-12 | 中国船舶重工集团公司第七一一研究所 | Multi-mode hybrid power system, ship, control method, and storage medium |
| CN114962043A (en) * | 2021-12-16 | 2022-08-30 | 中国船舶重工集团公司第七一一研究所 | Speed regulation control device for diesel engine and ship |
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