CN108443050A - Stepless speed changing type ocean current energy generator - Google Patents
Stepless speed changing type ocean current energy generator Download PDFInfo
- Publication number
- CN108443050A CN108443050A CN201810112435.3A CN201810112435A CN108443050A CN 108443050 A CN108443050 A CN 108443050A CN 201810112435 A CN201810112435 A CN 201810112435A CN 108443050 A CN108443050 A CN 108443050A
- Authority
- CN
- China
- Prior art keywords
- planetary gear
- gear mechanism
- front side
- rear side
- ocean current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/46—Gearings having only two central gears, connected by orbital gears
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/32—Electric motors actuators or related electrical control means therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
- F16H2200/2007—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with two sets of orbital gears
Abstract
The invention discloses a kind of stepless speed changing type ocean current energy generators, including casing, the casing is externally provided with ocean current turbine, include the first planetary gear mechanism, the second planetary gear mechanism and permanent magnet generator in the casing, the ocean current turbine is connect with the first planetary gear mechanism, first planetary gear mechanism is connect with the second planetary gear mechanism, second planetary gear mechanism is connect with permanent magnet generator, further include the first variable-speed controller in the casing, first variable-speed controller is connect with the first planetary gear mechanism.The first planetary gear mechanism is controlled by using the first variable-speed controller, then the second planetary gear mechanism is transferred power to using the first planetary gear, finally permanent magnet generator is output power to via the second planetary gear mechanism again, it variable speed can be run under complicated sea situation and arbitrary ocean current flow condition, and can adaptively realize efficient energy by ocean current power generation.
Description
Technical field
The present invention relates to a kind of technical field of power generation, especially ocean current energy generator.
Background technology
Ocean current power generation is to push turbine rotary motion to push the hair subsequently connected in turn using the kinetic energy of ocean current in ocean
Motor exports a kind of utilization of new energy resources mode of electric energy.Utilize the basic principle and existing wind-power electricity generation more one of ocean current power generation
It causes, but difference between the two is still larger.The density of seawater is very high, and ocean current flow velocity has very strong predictability, therefore this also makes
Obtain ocean current power generation has apparent advantage, the especially volume in generated output and power generating equipment compared to conventional wind-power electricity generation
Than on.Currently, existing energy by ocean current generation technology is still in the experimental exploring stage, existing energy by ocean current generating set frequently with
The straight kind of drive for driving form, i.e. ocean current turbine is directly connected to generator, and passes through ocean current kinetic energy direct drive generator
Speed changing, frequency converting generates electricity.Although such arrangement form has the advantages such as simple in structure, efficiency is higher, but the load of energy by ocean current fluctuation can be straight
It connects and is transmitted to generator end, when used for a long time, easily cause generator end fatigue failure.In addition, the generator for directly driving form is logical
Often with there is prodigious volume and weight, it is difficult to which installation and operation, cost are high.
Another form of energy by ocean current generator is using the mechanical gearbox transmission of rigidity, i.e. the rotating speed elder generation of ocean current turbine
By being linked into generator end again after gear-box speedup.But the gear-box of such driving form only has fixed transmission ratio,
Can not be according to the variation of seawater velocity, rotating speed generator is adaptively adjusted so that obtained most preferably under any operating mode again
Power output.In addition, the failure rate of gear-box is higher, regularly care and maintenance is needed, this also increases machine to a certain extent
The cost of group.Ocean current kinetic energy is converted to by also a kind of energy by ocean current generation technology using low speed hydraulic direct-drive form first
Hydraulic energy is eliminated the fluctuation of power by the energy storage and filter action of hydraulic system, is then then converted into as mechanical kinetic energy and hair
The electrical power of motor.Low speed hydraulic system can match with the ocean current turbine of low speed, the variable speed effect of hydraulic system
It is also possible that the rotating speed of unit adaptively changes with ocean current flow velocity.But the effect of the ocean current power-generating system of such form
Rate is more much lower than normal purely mechanic transmission, and main cause is the efficiency of hydraulic system obviously than gear-box and transmission shaft
Efficiency it is much lower.In addition, this kind of kind of drive has the low conversion of different type low energy three times, conversion every time exists larger
Power loss, this also causes the energy by ocean current utilization rate of this driving form relatively low on the whole.
In conclusion that there are the kinds of drive is single, efficiency is relatively low, maintenance costs are inclined for existing energy by ocean current electricity generation system
High a series of disadvantage problem, also commercial applications in large-scale, high-efficiency relatively difficult to achieve.
Invention content
The technical problem to be solved by the present invention is to：A kind of more efficient ocean current energy generator is provided.
The solution that the present invention solves its technical problem is：Stepless speed changing type ocean current energy generator, including casing, institute
It states casing and is externally provided with ocean current turbine, include that the first planetary gear mechanism, the second planetary gear mechanism and permanent magnetism are sent out in the casing
Motor, first planetary gear mechanism are located at the front of the second planetary gear mechanism, the ocean current turbine and the first planet tooth
Take turns mechanism connection, first planetary gear mechanism connect with the second planetary gear mechanism, second planetary gear mechanism and
Permanent magnet generator connects, and further includes the first variable-speed controller in the casing, first variable-speed controller and the first planet tooth
Take turns mechanism connection.
As a further improvement of the above technical scheme, first planetary gear mechanism includes front side planet carrier, front side
Gear ring, front side planetary gear, front side sun gear, second planetary gear mechanism include rear side sun gear, rear side planet carrier, rear side
Gear ring and rear side planetary gear, the ocean current turbine are fixedly connected with front side planet carrier, and the front side gear ring is solid with rear side planet carrier
Fixed connection, the front side sun gear and the first variable-speed controller are drivingly connected.
As a further improvement of the above technical scheme, first variable-speed controller includes that front side current transformer is controlled with front side
Motor processed, the front side current transformer are electrically connected with front side control motor, the output shaft and the front side sun of the front side control motor
Wheel drive connects.
As a further improvement of the above technical scheme, further include the second variable-speed controller, second variable-speed controller
Motor is controlled including rear side current transformer and rear side, the rear side current transformer is electrically connected with rear side control motor, the rear side control
The output shaft of motor is drivingly connected with rear side sun gear.
As a further improvement of the above technical scheme, pass through direct current mother between the front side current transformer and rear side current transformer
Line is connected with capacitance.
The beneficial effects of the invention are as follows：The first planetary gear mechanism is controlled by using the first variable-speed controller, it is then sharp
The second planetary gear mechanism is transferred power to the first planetary gear, it is finally via the second planetary gear mechanism that power is defeated again
Go out to permanent magnet generator, variable speed can be run under complicated sea situation and arbitrary ocean current flow condition, and can be adaptively real
Existing efficient energy by ocean current power generation.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.Obviously, described attached drawing is a part of the embodiment of the present invention, rather than is all implemented
Example, those skilled in the art without creative efforts, can also be obtained according to these attached drawings other designs
Scheme and attached drawing.
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the control Organization Chart of the first current transformer of the present invention；
Fig. 3 is the control Organization Chart of the second current transformer of the present invention.
Specific implementation mode
The technique effect of the design of the present invention, concrete structure and generation is carried out below with reference to embodiment and attached drawing clear
Chu is fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright a part of the embodiment, rather than whole embodiments, based on the embodiment of the present invention, those skilled in the art are not being paid
The other embodiment obtained under the premise of creative work, belongs to the scope of protection of the invention.In addition, be previously mentioned in text
All connection/connection relations not singly refer to component and directly connect, and refer to that can be added deduct according to specific implementation situation by adding
Few couple auxiliary, to form more preferably coupling structure.Each technical characteristic in the invention, in not conflicting conflict
Under the premise of can be with combination of interactions.
Referring to Fig.1, stepless speed changing type ocean current energy generator, including casing, the casing are externally provided with ocean current turbine 1, institute
State in casing includes the first planetary gear mechanism 2, the second planetary gear mechanism 3 and permanent magnet generator 4, first planetary gear
Mechanism 2 is located at the front of the second planetary gear mechanism 3, and the ocean current turbine 1 is connect with the first planetary gear mechanism 2, and described
One planetary gear mechanism 2 is connect with the second planetary gear mechanism 3, and second planetary gear mechanism 3 connects with permanent magnet generator 4
It connects, further includes the first variable-speed controller 5 in the casing, first variable-speed controller, 5 and first planetary gear mechanism 2 connects
It connects.
It is further used as preferred embodiment, first planetary gear mechanism includes front side planet carrier 21, anterior lateral tooth
Circle 22, front side planetary gear 23, front side sun gear 24, second planetary gear mechanism 3 include rear side sun gear 31, rear side planet
Frame 32, rear side gear ring 33 and rear side planetary gear 34, the ocean current turbine 1 are fixedly connected with front side planet carrier 21, the anterior lateral tooth
Circle 22 is fixedly connected with rear side planet carrier 32, and the rear side planet carrier 32 is drivingly connected with permanent magnet generator 4, the front side sun
Wheel 24 and the first variable-speed controller 5 are drivingly connected.
Ocean current turbine 1 is connected with front side planet carrier 21, and it is planetary that the ocean current kinetic energy of capture is transformed into first
Mechanical kinetic energy, which exports via front side planetary gear 23 and front side gear ring 22 into rear side planet carrier 32, and converges simultaneously
Enter into permanent magnet generator 4, produces electricl energy output.The stator of permanent magnet generator 4 is directly connect with power grid, and by generated electricity
Power is incorporated directly into power grid.It of coursing, ocean current turbine can also be and be connected with gear ring other than being connected with planet carrier,
Then accordingly planet carrier is connected in the planet carrier with rear side and also may be used.
It is further used as preferred embodiment, first variable-speed controller 5 includes that front side current transformer 51 is controlled with front side
Motor 52 processed, the front side current transformer 51 and front side control motor 52 be electrically connecteds, the output shaft of the front side control motor 52 and
Front side sun gear 24 is drivingly connected.
It is further used as preferred embodiment, further includes the second variable-speed controller 6, second variable-speed controller 6 wraps
It includes rear side current transformer 61 and controls motor 6 with rear side, the rear side current transformer 61 is electrically connected with rear side control motor 62, the rear side
The output shaft and rear side sun gear 31 for controlling motor 62 are drivingly connected.
It is further used as preferred embodiment, passes through direct current mother between the front side current transformer 51 and rear side current transformer 61
Line is connected with capacitance.
Front side sun gear is connected with front side control motor, and rear side sun gear is connected with rear side control motor, uses respectively
In the first planetary gear and the second planetary mechanical kinetic energy are diverted partially to both sides to control motor in.Front side and rear side
It is connected respectively to current transformer corresponding side to control motor, is connected with capacitance by DC bus between two current transformers.
The current transformer of front side realizes the variable speed constant frequency control of unit for controlling front side control motor, after the current transformer of rear side is used to control
The control motor of side realizes the adjusting of the active and reactive power of grid side.
First planetary gear is used to control the principle of ocean current secondary speed：
In above formula, ωi, (i=1,2 ..., 14) be respectively corresponding labeled elements rotating speed, wherein ω22=ω4For hair
The rotating speed of motor 4, k1It is certain value for the aspect ratio of front side planetary gear train, i.e. front side the ratio between the gear ring number of teeth and the sun gear number of teeth.
According to formula (1) it is found that working as generator speed ω22=ω4For can measure given value when, pass through first become
It flows device control and changes the rotational speed omega of front side control motor24, you can to change ocean current secondary speed ω1, enable keeping
In optimum speed value.
The rotational speed and torque relationship of rear side planetary gear train is
T4=T31(1+k2)=T62(1+k2) (3)
In above formula, Ti, (i=1,2 ..., 14) be respectively corresponding labeled elements torque, wherein T31=T62Motor in order to control
62 torque, k2It is certain value for the aspect ratio of rear side planetary gear train, i.e. rear side the ratio between the gear ring number of teeth and the sun gear number of teeth.
According to formula (2) and (3) it is found that the output power of generator 4, i.e. rotational speed omega4With torque T4Product with control motor
Rotating speed and torque between have a direct relationship, and the active power of Generator Network side, reactive power and DC bus electricity
There is also direct substantial connections between the output power of pressure value and generator, rotating speed and torque.Therefore, it is controlled by current transformer
With the rotating speed and torque for changing control motor, you can to reach change and regulator generator end electromotive power output and grid-connected have
The effect of work(, reactive power and busbar voltage.
Referring to Fig. 2, front side current transformer realizes that the rotating-speed tracking of ocean current turbine controls by controlling front side control motor, and
And then realize a series of work(such as the variable speed operation of ocean current generator group, the tracking of best power point and variable speed constant frequency control
Energy.The control framework is made of the control of d-q twin shafts on the whole.In q axis control aspects, first by measure obtain ocean current flow velocity Lai
The rotating speed for obtaining best ocean current turbine is calculated, and best q axis is calculated by the closed loop that proportional integrator is constituted by one
Electric currentAnd this electric current is transformed to by the vector in electric current spaceAnd then it is controlled by quadrature axis resonance and compensator structure
At close loop control circuit realize closed-loop control and trackingIn d shaft current control aspects, the reference value of d shaft currentsUsually set
It is calculated as zero, is lost with reducing degaussing and reducing.The value becomes via the vector in electric current spaceAnd further pass through
D-axis resonance controls and harmonic compensator realizes the control of closed loop.PLL is phaselocked loop in figure, is mainly voltage and current
The vector in space provides the information at phase angle.
Referring to Fig. 3, the control framework of rear side current transformer, respectively by control two parts of busbar voltage control and reactive power
It constitutes.Rear side current transformer is mainly used for realizing active and reactive power the adjusting after the grid-connected connection of permanent magnet generator.Busbar electricity
The input of voltage-controlled system is the reference value of busbar voltageAnd realize d-axis via the control closed loop that busbar voltage controller is constituted
Reference currentOutput.The input of Reactive Power Control is the reference value Q of reactive power*, it is made up of reactive power controller
Closed loop, realize quadrature axis current reference valueOutput.D-axis and quadrature axis current reference value by the transformation of space vector,
It is converted into respectivelyWithThe two realizes current transformer by d-axis and the control of the resonance of quadrature axis and harmonic compensator respectively again
Closed-loop control.PLL is phaselocked loop, and predominantly space vector transformation provides phase angle information.
Compared to the energy by ocean current unit of traditional hydraulic speed-changing, this energy by ocean current unit uses the purely mechanic kind of drive, has
The problems such as higher transmission efficiency, no hydraulic oil leakage and pollution.The stepless speed changing type energy by ocean current generating set of the present invention has
Two groups of independent control motors and current transformer, can be separately to ocean current turbine to variable speed operation, best power point
The output power quality of tracking and generator is realized efficient control and is adjusted.
The better embodiment of the present invention is illustrated above, but the invention is not limited to the implementation
Example, those skilled in the art can also make various equivalent modifications or be replaced under the premise of without prejudice to spirit of that invention
It changes, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (5)
1. stepless speed changing type ocean current energy generator, it is characterised in that：Including casing, the casing is externally provided with ocean current turbine (1),
Include the first planetary gear mechanism (2), the second planetary gear mechanism (3) and permanent magnet generator (4) in the casing, described first
Planetary gear mechanism (2) is located at the front of the second planetary gear mechanism (3), the ocean current turbine (1) and the first planet gear mechanism
Structure (2) connects, and first planetary gear mechanism (2) connect with the second planetary gear mechanism (3), the second planetary gear machine
Structure (3) is connect with permanent magnet generator (4), further includes the first variable-speed controller (5), first variable-speed controller in the casing
(5) it is connect with the first planetary gear mechanism (2).
2. stepless speed changing type ocean current energy generator according to claim 1, it is characterised in that：First planetary gear
Mechanism includes front side planet carrier (21), front side gear ring (22), front side planetary gear (23), front side sun gear (24), second row
Star gear mechanism (3) includes rear side sun gear (31), rear side planet carrier (32), rear side gear ring (33) and rear side planetary gear (34),
The ocean current turbine (1) is fixedly connected with front side planet carrier (21), and the front side gear ring (22) is fixed with rear side planet carrier (32)
Connection, the rear side planet carrier (32) are drivingly connected with permanent magnet generator (4), the front side sun gear (24) and the first speed change control
Device (5) processed is drivingly connected.
3. stepless speed changing type ocean current energy generator according to claim 2, it is characterised in that：First speed Control
Device (5) includes front side current transformer (51) and front side control motor (52), and the front side current transformer (51) controls motor with front side
(52) it is electrically connected, output shaft and the front side sun gear (24) of the front side control motor (52) are drivingly connected.
4. stepless speed changing type ocean current energy generator according to claim 3, it is characterised in that：It further include the second speed change control
Device (6) processed, second variable-speed controller (6) include rear side current transformer (61) and rear side control motor (6), the rear side unsteady flow
Device (61) is electrically connected with rear side control motor (62), and output shaft and the rear side sun gear (31) of the rear side control motor (62) drive
Dynamic connection.
5. stepless speed changing type ocean current energy generator according to claim 4, it is characterised in that：The front side current transformer
(51) it is connected by DC bus and capacitance between rear side current transformer (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810112435.3A CN108443050A (en) | 2018-02-05 | 2018-02-05 | Stepless speed changing type ocean current energy generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810112435.3A CN108443050A (en) | 2018-02-05 | 2018-02-05 | Stepless speed changing type ocean current energy generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108443050A true CN108443050A (en) | 2018-08-24 |
Family
ID=63191820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810112435.3A Pending CN108443050A (en) | 2018-02-05 | 2018-02-05 | Stepless speed changing type ocean current energy generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN108443050A (en) |
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| PT103270A (en) * | 2005-05-02 | 2005-09-30 | Martifer En Equipamentos Para | Energy conversion/inversion system, has two sets of toothed wheels with respective internal teeth, where internal teeth includes set of movement transmission planetary gears and anti-reverse bearings placed inside toothed wheels |
| CN201621013U (en) * | 2010-02-05 | 2010-11-03 | 国电联合动力技术有限公司 | Speed-adjustable type wind turbine generator system |
| CN102324801A (en) * | 2011-06-24 | 2012-01-18 | 中国科学院电工研究所 | Wind-power generating set |
| DE102011106535A1 (en) * | 2011-07-05 | 2013-01-10 | Robert Bosch Gmbh | Powertrain of a flow power plant |
| CN103075475A (en) * | 2013-01-19 | 2013-05-01 | 龙宏元 | Planetary series stepless transmission for controlling rotating speed of controlled transmission path |
| CN103171426A (en) * | 2013-04-02 | 2013-06-26 | 常州海科新能源技术有限公司 | Driving device of new energy automobile |
| CN103241123A (en) * | 2013-05-14 | 2013-08-14 | 北京理工大学 | Hybrid transmission device for urban buses |
| CN105736654A (en) * | 2016-04-20 | 2016-07-06 | 长安大学 | Two-stage gearbox of electric vehicle |
| CN208122993U (en) * | 2018-02-05 | 2018-11-20 | 佛山科学技术学院 | Stepless speed changing type ocean current energy generator |
-
2018
- 2018-02-05 CN CN201810112435.3A patent/CN108443050A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PT103270A (en) * | 2005-05-02 | 2005-09-30 | Martifer En Equipamentos Para | Energy conversion/inversion system, has two sets of toothed wheels with respective internal teeth, where internal teeth includes set of movement transmission planetary gears and anti-reverse bearings placed inside toothed wheels |
| CN201621013U (en) * | 2010-02-05 | 2010-11-03 | 国电联合动力技术有限公司 | Speed-adjustable type wind turbine generator system |
| CN102324801A (en) * | 2011-06-24 | 2012-01-18 | 中国科学院电工研究所 | Wind-power generating set |
| DE102011106535A1 (en) * | 2011-07-05 | 2013-01-10 | Robert Bosch Gmbh | Powertrain of a flow power plant |
| CN103075475A (en) * | 2013-01-19 | 2013-05-01 | 龙宏元 | Planetary series stepless transmission for controlling rotating speed of controlled transmission path |
| CN103171426A (en) * | 2013-04-02 | 2013-06-26 | 常州海科新能源技术有限公司 | Driving device of new energy automobile |
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