CN103321845A - Offshore floating grid-connected wind-wave power generation method and device - Google Patents
Offshore floating grid-connected wind-wave power generation method and device Download PDFInfo
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- CN103321845A CN103321845A CN2013102566512A CN201310256651A CN103321845A CN 103321845 A CN103321845 A CN 103321845A CN 2013102566512 A CN2013102566512 A CN 2013102566512A CN 201310256651 A CN201310256651 A CN 201310256651A CN 103321845 A CN103321845 A CN 103321845A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention discloses offshore floating grid-connected wind-wave power generation method and device. The device comprises a wind generator, an offshore floating platform, a power converter, a wave power generator, offshore floating platform fixation anchor chains and a wave power generator stator fixing pillar. The wind generator is mounted at the top end of the offshore floating platform. The wave power generator is mounted in a tower at the lower end of the offshore floating platform. The wave power generator is a linear generator. The power converter is mounted in the offshore floating platform and is connected with both the wind generator and the wave power generator. The offshore floating platform is fixed through the offshore floating platform fixation anchor chains. The wave power generator stator fixing pillar is used for fixing a wave power generator stator. The wind generator and the wave power generator generate electricity under the action of wind energy and wave energy. After being converted by the power converter, the electricity is transmitted to a shore power grid system through cables. The device is simple in structure and high in operating efficiency and has high practical value.
Description
Technical field
The present invention relates to a kind of offshore floating type wind-force and wave energy and mix generate electricity by way of merging two or more grid systems method and device, belong to the marine composite generating set structure technology of floating type.
Background technique
Along with the extensive use of new energy technology, the generation of electricity by new energy technology is just moved towards the ocean by land.Marine have more stable abundant wind field with respect to land, and be not subjected to the impact of landform.And marine containing huge wave energy resource, the utilization of wave energy is become one of current study hotspot.Traditional offshore novel energy power generation system is fixed on the sea bed by pole structure often, and this method is owing to high costs, and it is regional not to be suitable for the higher off-lying sea of energy reserve.And the offshore floating type wind generating technology is because only adopt this single generation of electricity by new energy technology of wind-power electricity generation, so the utilization ratio to whole floating power generation system is not high, and the electrical power storage of off-lying sea power generation system and conveying technology are key factors of restriction off-lying sea using energy source.Therefore study a cover offshore floating type wind-force and wave energy and mix generate electricity by way of merging two or more grid systems method and device, in practical application in industry, be very important.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, propose offshore floating type wind-force and wave energy and mix the method for generating electricity by way of merging two or more grid systems, utilize floating platform flexible for installation, the advantage that the application is wide, and added a cover wave energy generating set, improved the utilization ratio of system; The present invention also provides the device of realizing the method, and simple in structure, use value is high, and is simple in structure, advanced this electricity generating device in industrial application.
Method of the present invention adopts concrete technological scheme as follows:
A kind of offshore floating type wind-force and wave energy mix the method for generating electricity by way of merging two or more grid systems, and it is characterized in that: wind-driven generator and wave energy generator are installed on the floating platform on sea simultaneously, and floating platform on sea is fixed by anchor chain; Wind-driven generator and wave energy generator send electric energy under the effect of wind energy and wave energy, electric energy through after the power inverter conversion by cable transfer network system ashore.
Device of the present invention adopts concrete technological scheme as follows:
Device comprises wind-driven generator, floating platform on sea, power inverter, wave energy generator, floating platform on sea fixedly anchor chain and wave-energy power generation machine stator anchor post, wind-driven generator is installed in the top of floating platform on sea, wave energy generator is installed in the tower cylinder of floating platform on sea lower end, described wave energy generator adopts linear electric generator, power inverter is installed in the floating platform on sea, and is connected with wave energy generator with wind-driven generator respectively; Floating platform on sea fixedly anchor chain is fixed floating platform on sea, and wave-energy power generation machine stator anchor post is used for set wave wave energy for generating electricity machine stator.
Described power inverter comprises wind-power electricity generation rectification circuit, wave-energy power generation rectification circuit, grid-connected inverter circuit, PWM controller and drive circuit; The wind-driven generator output terminal power generating rectification circuit of giving a dinner for a visitor from afar, wave energy generator output termination wave-energy power generation rectification circuit, wind-power electricity generation rectification circuit and wave-energy power generation rectification circuit are connected in parallel on the DC side of grid-connected inverter circuit, the output terminal of grid-connected inverter circuit gets access to grid, the line voltage sensor is connected in parallel in the electrical network, the combining inverter output voltage sensor is connected in parallel on the three-phase output end of grid-connected inverter circuit, the output signal of combining inverter output voltage sensor and line voltage sensor is through the PWM controller, dsp chip in the PWM controller (adopting TMS320F2812) calculates 3 groups of independently pwm signals, the pwm signal of every group of 2 complementations, for 6 IGBT of grid-connected inverter circuit provide the driving signal, 6 IGBT work that driven grid-connected inverter circuit by the IGBT drive circuit make grid-connected inverter circuit produce the voltage that is incorporated into the power networks.
Wherein to convert the process of the electric energy that is incorporated into the power networks to be to realize like this to power inverter electric energy that wind-driven generator and wave energy generator are sent, when wind-driven generator and wave energy generator send electric energy under the effect of wind energy and wave energy, electric energy passes through respectively after wind-power electricity generation rectification circuit, the rectification of wave-energy power generation rectification circuit so that the dc voltage of grid-connected inverter circuit is constant, and the line voltage sensor detects the electrical network three-phase voltage
U a*,
U b*,
U c*, the combining inverter output voltage sensor detects the inverter circuit output voltage
U a,
U b,
U c, input PWM controller, the dsp chip in the PWM controller is used
U a*,
U b*,
U c* deduct
U a,
U b,
U cObtain △
U a, △
U b, △
U cNamely
U a*,
U b*,
U c* with
U a,
U b,
U cOutput error signal, output error signal △
U a, △
U b, △
U cObtain 3 groups of pwm signals, the i.e. pwm signal of every group of 2 complementations through PID modulation and triangle wave.
The present invention can improve the utilization ratio of floating power generation system by wind-power electricity generation is combined with wave energy generating set, and implement device is simple in structure, and high working efficiency has higher use value.
Description of drawings
Fig. 1 is the structural drawing that a kind of offshore floating type wind-force and wave energy mix the device that generates electricity by way of merging two or more grid systems;
Fig. 2 is the circuit structure diagram that a kind of offshore floating type wind-force and wave energy mix power inverter in the device that generates electricity by way of merging two or more grid systems;
Fig. 3 is the control strategy schematic diagram.
Embodiment
In order to deepen the understanding of the present invention, the present invention is described in further detail below in conjunction with embodiment and accompanying drawing, and this embodiment only is used for explaining the present invention, does not consist of the restriction to protection domain of the present invention.
Show the embodiment that a kind of offshore floating type wind-force of the present invention and wave energy mix the device that generates electricity by way of merging two or more grid systems such as Fig. 1 to Fig. 3: the implementation method that this offshore floating type wind-force and wave energy mix the device that generates electricity by way of merging two or more grid systems is by floating generation platform, power inverter and detection composition of the control system:
Referring to Fig. 1, this device is: comprise 1. wind-driven generators, 2. floating platform on sea, 3. power inverter, 4. wave energy generator, 5. fixedly anchor chain, 6. wave energy linear generating machine stator anchor post of floating platform on sea; Wind-driven generator 1 is installed in the top of floating platform on sea 2, wave energy generator 4 is installed in the tower cylinder of floating platform on sea 2 lower ends, wave energy generator 4 adopts linear electric generator, power inverter 3 is installed in the floating platform on sea 2, floating platform on sea fixedly anchor chain 5 is fixing with floating platform on sea 2, and wave energy linear generating machine stator anchor post 6 is used for fixedly wave energy linear generating machine stator.
The method is: rotate under the effect of wind blade at wind-force of wind-driven generator, drive wind driven generator rotation, send electric energy; Wave energy generator is linear electric generator, and the stator of linear electric generator is fixed on the sea bed by anchor post, and floating platform swings up and down under the effect of wave energy, produces relative movement between the mover of linear electric generator and the stator, and wave energy generator sends electric energy; Floating platform on sea is fixed by anchor chain, keeps its substantially horizontal static.
Referring to Fig. 2, this circuit is: comprise 7. wind-power electricity generation rectification circuits, 8. the wave-energy power generation rectification circuit, 9. grid-connected inverter circuit, 10. combining inverter output voltage sensor, 11. line voltage sensors, 12. the PWM controller, 13. IGBT drive circuits; The wind-driven generator 1 output terminal power generating rectification circuit 7 of giving a dinner for a visitor from afar, wave energy generator 4 output termination wave-energy power generation rectification circuits 8, wind-power electricity generation rectification circuit 7 and wave-energy power generation rectification circuit 8 are connected in parallel on the DC side of grid-connected inverter circuit 9, the output terminal of grid-connected inverter circuit 9 gets access to grid, line voltage sensor 11 is connected in parallel in the electrical network, combining inverter output voltage sensor 10 is connected in parallel on the three-phase output end of grid-connected inverter circuit 9, and the output signal of combining inverter output voltage sensor 10 and line voltage sensor 11 produces IGBT through PWM controller 12 and drives signal.
The method is: when wind-driven generator 1 and wave energy generator 4 sent electric energy under the effect of wind energy and wave energy, electric energy passed through respectively after wind-power electricity generation rectification circuit 7,8 rectifications of wave-energy power generation rectification circuit so that the dc voltage of grid-connected inverter circuit 9 is constant; The output terminal of grid-connected inverter circuit 9 gets access to grid, line voltage sensor 11 is connected in parallel in the electrical network, combining inverter output voltage sensor 10 is connected in parallel on the three-phase output end of grid-connected inverter circuit 9, the output signal of combining inverter output voltage sensor 10 and line voltage sensor 11 is through PWM controller 12, dsp chip in the PWM controller 12 calculates 3 groups of independently pwm signals, the pwm signal of every group of 2 complementations, for 6 IGBT of grid-connected inverter circuit 9 provide the driving signal, 6 IGBT work that driven grid-connected inverter circuits 9 by IGBT drive circuit 13 make grid-connected inverter circuit 9 produce the voltage that is incorporated into the power networks.
Referring to Fig. 3, Fig. 3 is the implementation method that offshore floating type wind-force and wave energy mix the control strategy of the device that generates electricity by way of merging two or more grid systems, and line voltage sensor 11 detects the electrical network three-phase voltage
U a*,
U b*,
U c*, combining inverter output voltage sensor 10 detects the inverter circuit output voltage
U a,
U b,
U c, input PWM controller 12, the dsp chip in the PWM controller 12 is used
U a*,
U b*,
U c* deduct
U a,
U b,
U cObtain △
U a, △
U b, △
U cNamely
U a*,
U b*,
U c* with
U a,
U b,
U cOutput error signal, output error signal △
U a, △
U b, △
U cObtain 3 groups of pwm signals, the i.e. pwm signal of every group of 2 complementations through PID modulation and triangle wave.
The present invention adopts TI company's T MS320F2812 chip as the main chip of PWM controller, this dsp chip TMS320F2812 has 2 PWM modules, each module can be exported 6 independently pwm signals, can satisfy the independently needs of pwm control signal of 3 in device.
Claims (5)
1. an offshore floating type wind-force and wave energy mix the method for generating electricity by way of merging two or more grid systems, and it is characterized in that: wind-driven generator and wave energy generator are installed on the floating platform on sea simultaneously, and floating platform on sea is fixed by anchor chain; Wind-driven generator and wave energy generator send electric energy under the effect of wind energy and wave energy, electric energy through after the power inverter conversion by cable transfer network system ashore.
2. realize that a kind of offshore floating type wind-force and wave energy mix the device of the method for generating electricity by way of merging two or more grid systems as claimed in claim 1, it is characterized in that: device comprises wind-driven generator (1), floating platform on sea (2), power inverter (3), wave energy generator (4), floating platform on sea is anchor chain (5) and wave-energy power generation machine stator anchor post (6) fixedly, wind-driven generator (1) is installed in the top of floating platform on sea (2), wave energy generator (4) is installed in the tower cylinder of floating platform on sea (2) lower end, described wave energy generator (4) adopts linear electric generator, power inverter (3) is installed in the floating platform on sea (2), and is connected 4 with wind-driven generator (1) with wave energy generator respectively) be connected; Floating platform on sea fixedly anchor chain (5) is fixing with floating platform on sea (2), and wave-energy power generation machine stator anchor post (6) is used for set wave wave energy for generating electricity machine stator.
3. a kind of offshore floating type wind-force according to claim 2 and wave energy mix the device that generates electricity by way of merging two or more grid systems, and it is characterized in that: described power inverter (3) comprises wind-power electricity generation rectification circuit (7), wave-energy power generation rectification circuit (8), grid-connected inverter circuit (9), PWM controller (12) and drive circuit (13); Wind-driven generator (1) the output terminal power generating rectification circuit (7) of giving a dinner for a visitor from afar, wave energy generator (4) output termination wave-energy power generation rectification circuit (8), wind-power electricity generation rectification circuit (7) and wave-energy power generation rectification circuit (8) are connected in parallel on the DC side of grid-connected inverter circuit (9), the output terminal of grid-connected inverter circuit (9) gets access to grid, line voltage sensor (11) is connected in parallel in the electrical network, combining inverter output voltage sensor (10) is connected in parallel on the three-phase output end of grid-connected inverter circuit (9), the output signal of combining inverter output voltage sensor (10) and line voltage sensor (11) is through PWM controller (12), dsp chip in the PWM controller (12) calculates 3 groups of independently pwm signals, the pwm signal of every group of 2 complementations, for 6 IGBT of grid-connected inverter circuit (9) provide the driving signal, 6 IGBT work that driven grid-connected inverter circuit (9) by IGBT drive circuit (13) make grid-connected inverter circuit (9) produce the voltage that is incorporated into the power networks.
4. a kind of offshore floating type wind-force according to claim 3 and wave energy mix the device that generates electricity by way of merging two or more grid systems, it is characterized in that: when wind-driven generator (1) and wave energy generator (4) send electric energy under the effect of wind energy and wave energy, electric energy passes through respectively wind-power electricity generation rectification circuit (7), after wave-energy power generation rectification circuit (8) rectification so that the dc voltage of grid-connected inverter circuit (9) is constant, line voltage sensor (11) detects the electrical network three-phase voltage, combining inverter output voltage sensor (10) detects the inverter circuit output voltage, input PWM controller (12), obtain the output error signal of electrical network three-phase voltage and inverter circuit output voltage after dsp chip in the PWM controller (12) is processed, output error signal obtains 3 groups of pwm signals through PID modulation and triangle wave.
According to claim 3 or 4 described a kind of offshore floating type wind-force and wave energy mix the device that generates electricity by way of merging two or more grid systems, it is characterized in that: described dsp chip is TMS320F2812.
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| CN2013102566512A CN103321845A (en) | 2013-06-25 | 2013-06-25 | Offshore floating grid-connected wind-wave power generation method and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629051A (en) * | 2013-11-25 | 2014-03-12 | 江苏大学 | Deep ocean floating type wind power and wave energy hybrid grid-connected power generation method and device |
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| CN1101103A (en) * | 1992-10-19 | 1995-04-05 | 应用研究及技术有限公司 | Electric power generator |
| CN101915202A (en) * | 2010-07-15 | 2010-12-15 | 上海交通大学 | Wind energy and wave energy combined generating system |
| CN102235011A (en) * | 2010-04-27 | 2011-11-09 | 南通大学 | Flexible floating foundation for offshore wind generating sets |
| CN202040026U (en) * | 2011-04-19 | 2011-11-16 | 中国科学院工程热物理研究所 | Comprehensive utilization system for sea energy |
| CN203430693U (en) * | 2013-06-25 | 2014-02-12 | 江苏大学 | Offshore floating type wind power and wave energy hybrid grid connection generating device |
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- 2013-06-25 CN CN2013102566512A patent/CN103321845A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101103A (en) * | 1992-10-19 | 1995-04-05 | 应用研究及技术有限公司 | Electric power generator |
| CN102235011A (en) * | 2010-04-27 | 2011-11-09 | 南通大学 | Flexible floating foundation for offshore wind generating sets |
| CN101915202A (en) * | 2010-07-15 | 2010-12-15 | 上海交通大学 | Wind energy and wave energy combined generating system |
| CN202040026U (en) * | 2011-04-19 | 2011-11-16 | 中国科学院工程热物理研究所 | Comprehensive utilization system for sea energy |
| CN203430693U (en) * | 2013-06-25 | 2014-02-12 | 江苏大学 | Offshore floating type wind power and wave energy hybrid grid connection generating device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629051A (en) * | 2013-11-25 | 2014-03-12 | 江苏大学 | Deep ocean floating type wind power and wave energy hybrid grid-connected power generation method and device |
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Application publication date: 20130925 |