CN203560032U - Wave-energy electric-power generating device - Google Patents

Wave-energy electric-power generating device Download PDF

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Publication number
CN203560032U
CN203560032U CN201320555895.6U CN201320555895U CN203560032U CN 203560032 U CN203560032 U CN 203560032U CN 201320555895 U CN201320555895 U CN 201320555895U CN 203560032 U CN203560032 U CN 203560032U
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China
Prior art keywords
circuit
energy
wave
wave energy
generator
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Expired - Fee Related
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CN201320555895.6U
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Chinese (zh)
Inventor
徐龙博
匡俊
周冰
史磊
李煜东
谭江平
汪少勇
杨莉
谢创数
郑明�
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China Energy Engineering Group Guangdong Electric Power Design Institute Co Ltd
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China Energy Engineering Group Guangdong Electric Power Design Institute Co Ltd
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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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Abstract

The utility model discloses a wave-energy electric-power generating device which comprises the components of: a wave energy collecting mechanism, an energy converting mechanism, a power generator and a converter; wherein the wave energy collecting mechanism, the energy converting mechanism, the power generator and the converter are arranged on a platform and are successively connected. The wave-energy electric-power generating device further comprises a control system which is connected with the wave energy collecting mechanism, the energy converting mechanism, the power generator and the converter respectively. The energy converting mechanism is internally provided with a speed reducing valve. The current output end of the converter is connected with an electric network. According to the wave-energy electric-power generating device, wave energy is converted to mechanical energy through the wave energy collecting mechanism; the mechanism energy is transmitted to the energy converting mechanism for being converted to rotating mechanical energy and driving the power generator to generate power. The current which is output from the power generator is converted to the current with voltage and frequency same with that of the electric network through the converter, and can be directly emerged into the electric network. The control system collects a state signal of each component of the wave-energy electric-power generating device in real time, and performs coordinated control on the energy converting mechanism, the power generator and the converter, thereby realizing control to output power and ensuring the output electric energy of the wave-energy electric-power generating device to satisfy requirement.

Description

Wave energy generating set
Technical field
The utility model belongs to power generation system technical field, particularly relates to a kind of wave energy generating set.
Background technique
Wave-energy power generation is that to take the energy of wave be power generation electric energy, and wave energy is a kind of unlimited energy resource that is close to, and utilizes wave-energy power generation to bring power supply guarantee to industry and household electricity, has brought very large convenience.
At present, conventional wave-energy power generation technology is to adopt wave energy acquisition mechanism to gather wave energy, Conversion of Energy wave fluctuation being produced by energy transfer mechanism and generator is electric energy, and generator is directly accessed to electrical network or directly charged device load, by the electric energy direct grid-connected or the use that produce.
But due to intermittence and the wave properties of wave energy, the quality of power supply that generator produces cannot reach the requirement of direct grid-connected and use, the electric energy of generation is directly accessed to electrical network and can bring adverse effect to electrical network.
Summary of the invention
Based on this, the utility model is to overcome the defect that the quality of power supply that in prior art, generator produces is poor, cannot reach the requirement of direct grid-connected and use, and a kind of wave energy generating set is provided.
Its technological scheme is as follows:
A kind of wave energy generating set, comprise and be arranged at wave energy acquisition mechanism, energy transfer mechanism, generator and current transformer on platform and that connect successively, also comprise the control system being all electrically connected to described wave energy acquisition mechanism, energy transfer mechanism, generator and current transformer; Described energy transfer mechanism inside is provided with series flow control valve, and described current transformer connects electrical network.
Below further technological scheme is described:
Described energy transfer mechanism also comprises power executive component, pressurized machine, accumulator and prime mover, and described power executive component, pressurized machine, series flow control valve are connected successively with prime mover; The described accumulator that is connected in parallel between described pressurized machine and series flow control valve, described series flow control valve regulates rate-of flow.
Described wave energy acquisition mechanism, energy transfer mechanism, generator and current transformer all feed back internal signal to described control system, the feedback coordinated control command of described control system is given described energy transfer mechanism, generator and current transformer, controls output electric energy and meets grid-connected requirement.
Described control system is also provided with the external communication interface of communicating by letter with external system.
Described current transformer comprises main circuit, control circuit, sensor and switch; Described switch ends connects respectively described main circuit and electrical network, and described sensor setting is in described main circuit, the electric parameters that described sensor gathers described main circuit feeds back to described control circuit, and the electric parameters that described control circuit gathers according to described sensor coordinates to control described main circuit; Described generator feedback tach signal is given described control circuit.
Described main circuit comprises rectification circuit, DC capacitor, inverter circuit and the eliminator connecting successively; Described sensor gathers the electric parameters of described main circuit generating pusher side, DC capacitor DC side and grid side, and described control circuit sends control signal according to described electric parameters and tach signal to described rectification circuit and inverter circuit.
Described control circuit comprises current/voltage testing circuit, arithmetic circuit, drive circuit, velocity checking circuits, imput output circuit and protective circuit; The electric parameters of described main circuit generating pusher side, DC capacitor DC side and grid side all feeds back to described arithmetic circuit by described current/voltage testing circuit, and the tach signal of described generator feeds back to described arithmetic circuit by described velocity checking circuits; Described arithmetic circuit sends control signal according to described electric parameters and tach signal to described rectification circuit and inverter circuit; Described control system is connected with described imput output circuit.
Described wave energy acquisition mechanism and energy transfer mechanism are provided with many covers, and overlap described energy transfer mechanism more and be all connected with described generator.
Below the principle of aforementioned techniques scheme, effect etc. are described:
1. wave energy generating set is converted to mechanical energy by wave energy acquisition mechanism by wave energy, is passed to energy transfer mechanism, is converted to rotating mechanical energy, drives generator rotary electrification; The electric current of generator output is converted to and line voltage, electric current that frequency is identical by current transformer, can be directly incorporated into electrical network; The flow of the adjustable medium of series flow control valve in energy transfer mechanism, thereby the energy balance of controllable energy switching mechanism medium and the rotating speed of energy transfer mechanism; The state signal of each link of control system Real-time Collection wave energy generating set, and energy transfer mechanism, generator and current transformer are coordinated to control, realize the control to output power, and guarantee that wave energy generating set output electric energy meets the demands.
2. the mechanical energy of wave energy acquisition mechanism output is converted to other forms of energy, by pressurized machine supercharging, through series flow control valve, drives prime mover rotation; Accumulator is used for storing unnecessary medium energy, the output of stable energy; Series flow control valve is accepted the instruction from control system, and the energy of adjusting energy switching mechanism output is to drive prime mover; Prime mover can be water turbine or turbo machine, drives generator to generate electricity.
3. wave energy acquisition mechanism, energy transfer mechanism, generator and current transformer are all electrically connected to control system, and according to signal coordinated control energy transfer mechanism, generator and the current transformer of feedback, realized the control of control system to the monitoring of whole wave energy generating set and running state, can control the output power of wave energy generating set, make the electric energy of output meet grid-connected requirement.
4. external communication interface can be communicated by letter with external system, can be convenient to jointly controlling of wave energy generating set and the other forms of energy.
5. the Ac of generator output is converted to direct current by the rectification circuit in current transformer, after DC capacitor, is converted to and line voltage, Ac that frequency is identical through inverter circuit again, after eliminator filtering, can be directly incorporated into electrical network.The electric parameters that sensor and current/voltage testing circuit gather main circuit feeds back to control circuit, generator gathers speed feedback signal to control circuit, arithmetic circuit carries out calculation process by the feedback signal of collection, provides the break-make control command of power component in rectification circuit and inverter circuit; The control command that drive circuit provides arithmetic circuit is carried out photoelectricity isolation and amplification, and the break-make of driving power element is to control whether output current of current transformer.Protective circuit is for providing the protection of current transformer internal circuit.
6. many cover wave energy acquisition mechanisms and energy transfer mechanism are set, can expand wave energy and gather face, and, can make a plurality of wave energy acquisition mechanisms separately, make different wave energy acquisition mechanisms produce different fluctuations according to different waves, increase wave energy and be converted into mechanical transformation of energy.
Accompanying drawing explanation
Fig. 1 is that this wave energy generating set forms schematic diagram;
Fig. 2 is this wave energy generating set energy transfer mechanism schematic diagram;
Fig. 3 is this wave energy generating set current transformer schematic diagram.
Description of reference numerals:
100. wave energy generating set, 110. platform, 120. wave energy acquisition mechanisms, 130. energy transfer mechanism, 140. generator, 150. current transformer, 160. control system, 170. electrical network, 131. oil hydraulic cylinder, 132. pressurized machine, 133. series flow control valve, 134. prime mover, 135. accumulator, 136. cylinder, 152. main circuit, 154. control circuit, 156. sensor, 158. switch, 1522. rectification circuit, 1524. DC capacitor, 1526. inverter circuit, 1528. eliminator, 1541. current/voltage testing circuit, 1542. arithmetic circuit, 1543. drive circuit, 1544. velocity checking circuits, 1545. imput output circuit, 1546. protective circuit.
Embodiment
Below embodiment of the present utility model is elaborated:
As shown in Figure 1, a kind of wave energy generating set, comprise and be arranged at wave energy acquisition mechanism 120, energy transfer mechanism 130, generator 140 and current transformer 150 on platform 110 and that connect successively, also comprise the control system 160 being all electrically connected to wave energy acquisition mechanism 120, energy transfer mechanism 130, generator 140 and current transformer 150; Energy transfer mechanism 130 inside are provided with series flow control valve 133, and current transformer 150 connects electrical network 170.
Wave energy generating set is converted to mechanical energy by wave energy acquisition mechanism 120 by wave energy, is passed to energy transfer mechanism 130, is converted to rotating mechanical energy, drives generator 140 rotary electrifications.
The electric current of generator 140 output is converted to and electrical network 170 voltages, electric current that frequency is identical by current transformer 150, can be directly incorporated into electrical network 170; The flow of the series flow control valve 133 adjustable media in energy transfer mechanism 130, series flow control valve 133 is the combination brake switch and proporting that are in series by Fixed differential reducing valve and throttle valve, throttle valve is used for regulating the flow passing through, Fixed differential reducing valve is used for the impact of auto-compensation load variations, making the pressure reduction of throttle valve front and back is definite value, can eliminate the impact of load variations on flow; Thereby the energy balance of controllable energy switching mechanism 130 medium and the rotating speed of energy transfer mechanism 130, thereby the size of control electric energy conversion amount makes electric energy stable output, meanwhile, can reduce the workload of current transformer 150.
The state signal of control system 160 each links of Real-time Collection wave energy generating set, and energy transfer mechanism 130, generator 140 and current transformer 150 are coordinated to control, the control of realization to output power, and guarantee that wave energy generating set output electric energy meets the demands.Current transformer 150 is application converter technique and microelectronic technology; by changing machine operation power supply frequency mode, control the electric control appliance of alternator 140; can provide its needed supply voltage according to the actual demand of motor; thereby reach the object of energy-conservation, speed governing, the raising quality of power supply, and then protection electrical network 170.
Wave energy acquisition mechanism 120 can be oscillating water column mechanism, pendulum-type mechanism or wave piston; Generator 140 adopts magneto alternator 140.
As shown in Figure 2, in an embodiment, energy transfer mechanism 130 also comprises power executive component 131, pressurized machine 132, accumulator 135 and prime mover 134 therein, and power executive component 131, pressurized machine 132, series flow control valve 133 and prime mover 134 are connected successively; The accumulator 135 that is connected in parallel between pressurized machine 132 and series flow control valve 133, series flow control valve 133 regulates fluid floies.The mechanical energy of wave energy acquisition mechanism 120 outputs is converted to other forms of energy, by pressurized machine 132 superchargings, through series flow control valve 133, drives prime mover 134 rotations; Accumulator 135 is used for storing unnecessary medium energy, the output of stable energy; The instruction that series flow control valve 133 is accepted from control system 160, the energy of adjusting energy switching mechanism 130 outputs is to drive prime mover 134; Prime mover 134 can be water turbine or turbo machine, drives generator 140 to generate electricity.Certainly, the medium of the present embodiment indication can be liquid, can be also gas, and power executive component 131 can be oil hydraulic cylinder, can be also cylinder.
Wave energy acquisition mechanism 120, energy transfer mechanism 130, generator 140 and current transformer 150 all feed back internal signal to control system 160, the feedback coordinated control command of control system 160, to energy transfer mechanism 130, generator 140 and current transformer 150, is controlled output electric energy and is met grid-connected requirement.Wave energy acquisition mechanism 120, energy transfer mechanism 130, generator 140 and current transformer 150 are all electrically connected to control system 160, and according to signal coordinated control energy transfer mechanism 130, generator 140 and the current transformer 150 of feedback, the monitoring of 160 pairs of whole wave energy generating sets 100 of control system and the control of running state have been realized, can control the output power of wave energy generating set 100, make the electric energy of output meet grid-connected requirement.
Control system 160 is also provided with the external communication interface of communicating by letter with external system.External communication interface can be communicated by letter with external system, can be convenient to jointly controlling of wave energy generating set 100 and the other forms of energy.
As shown in Figure 3, current transformer 150 comprises main circuit 152, control circuit 154, sensor 156 and switch 158; Switch 158 two ends connect respectively main circuit 152 and electrical network 170, and sensor 156 is arranged at main circuit 152, the electric parameters that sensor 156 gathers main circuit 152 feeds back to control circuit 154, and the electric parameters that control circuit 154 gathers according to sensor 156 coordinates to control main circuit 152; Generator 140 feedback tach signals are to control circuit 154.The electric current of generator 140 outputs flows to electrical network 170 by main circuit 152, and is provided with switch 158 at main circuit 152, can determine whether according to actual needs that the electric current that allows generator 140 to produce is transported to electrical network 170; Main circuit 152 is also provided with sensor 156, can gather the signal feed back of main circuit 152 each points to control circuit 154, and control circuit 154 can coordinate to control according to feedback signal electric current, voltage, the tach signal of electric current in main circuit 152.
Main circuit 152 comprises rectification circuit 1522, DC capacitor 1524, inverter circuit 1526 and the eliminator 1528 connecting successively; Sensor 156 gathers the electric parameters of main circuit 152 generator 140 sides, DC capacitor 1524 DC side and electrical network 170 sides, and control circuit 154 sends control signal according to electric parameters and tach signal to rectification circuit 1522 and inverter circuit 1526.The Ac of generator 140 outputs is converted to direct current by the rectification circuit 1522 in current transformer 150, after DC capacitor 1524, through inverter circuit 1526, be converted to and electrical network 170 voltages, Ac that frequency is identical again, after eliminator 1528 filtering, can be directly incorporated into electrical network 170; The electric parameters that sensor 156 and current/voltage testing circuit gather main circuit 152 feeds back to control circuit 154, and generator 140 gathers speed feedback signal to control circuit 154, and control circuit 154 is controlled output power according to electric parameters and tach signal.
Control circuit 154 comprises current/voltage testing circuit 1541, arithmetic circuit 1542, drive circuit 1543, velocity checking circuits 1544, imput output circuit 1545 and protective circuit 1546; The electric parameters of main circuit 152 generator 140 sides, DC capacitor 1524 DC side and electrical network 170 sides all feeds back to arithmetic circuit 1542 by current/voltage testing circuit 1541, and the tach signal of generator 140 feeds back to arithmetic circuit 1542 by velocity checking circuits 1544; Arithmetic circuit 1542 sends control signal according to electric parameters and tach signal to rectification circuit 1522 and inverter circuit 1526; Control system 160 is connected with imput output circuit 1545.Arithmetic circuit 1542 carries out calculation process by the feedback signal of collection, provides the break-make control command of power component in rectification circuit 1522 and inverter circuit 1526; The control command that drive circuit 1543 provides arithmetic circuit 1542 is carried out photoelectricity isolation and amplification, and the break-make of driving power element is to control whether output current of current transformer 150.Protective circuit 1546 is for providing the protection of current transformer 150 internal circuits.
Wave energy acquisition mechanism 120 and energy transfer mechanism 130 are provided with many covers, and overlap energy transfer mechanism 130 more and be all connected with generator 140.Many cover wave energy acquisition mechanisms 120 and energy transfer mechanism 130 are set, can expand wave energy and gather face; Can make a plurality of wave energy acquisition mechanisms 120 separately, make different wave energy acquisition mechanisms 120 produce different fluctuations according to different waves, increase wave energy to mechanical transformation of energy.
The above embodiment has only expressed embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.

Claims (8)

1. a wave energy generating set, it is characterized in that, comprise and be arranged at wave energy acquisition mechanism, energy transfer mechanism, generator and current transformer on platform and that connect successively, also comprise the control system being all electrically connected to described wave energy acquisition mechanism, energy transfer mechanism, generator and current transformer; Described energy transfer mechanism inside is provided with series flow control valve, and described current transformer connects electrical network.
2. wave energy generating set according to claim 1, is characterized in that, described energy transfer mechanism also comprises power executive component, pressurized machine, accumulator and prime mover, and described power executive component, pressurized machine, series flow control valve are connected successively with prime mover; The described accumulator that is connected in parallel between described pressurized machine and series flow control valve, described series flow control valve regulates rate-of flow.
3. wave energy generating set according to claim 1, it is characterized in that, described wave energy acquisition mechanism, energy transfer mechanism, generator and current transformer all feed back internal signal to described control system, the feedback coordinated control command of described control system is given described energy transfer mechanism, generator and current transformer, controls output electric energy and meets grid-connected requirement.
4. wave energy generating set according to claim 3, is characterized in that, described control system is also provided with the external communication interface of communicating by letter with external system.
5. wave energy generating set according to claim 1, is characterized in that, described current transformer comprises main circuit, control circuit, sensor and switch; Described switch ends connects respectively described main circuit and electrical network, and described sensor setting is in described main circuit, the electric parameters that described sensor gathers described main circuit feeds back to described control circuit, and the electric parameters that described control circuit gathers according to described sensor coordinates to control described main circuit; Described generator feedback tach signal is given described control circuit.
6. wave energy generating set according to claim 5, is characterized in that, described main circuit comprises rectification circuit, DC capacitor, inverter circuit and the eliminator connecting successively; Described sensor gathers the electric parameters of described main circuit generating pusher side, DC capacitor DC side and grid side, and described control circuit sends control signal according to described electric parameters and tach signal to described rectification circuit and inverter circuit.
7. wave energy generating set according to claim 6, is characterized in that, described control circuit comprises current/voltage testing circuit, arithmetic circuit, drive circuit, velocity checking circuits, imput output circuit and protective circuit; The electric parameters of described main circuit generating pusher side, DC capacitor DC side and grid side all feeds back to described arithmetic circuit by described current/voltage testing circuit, and the tach signal of described generator feeds back to described arithmetic circuit by described velocity checking circuits; Described arithmetic circuit sends control signal according to described electric parameters and tach signal to described rectification circuit and inverter circuit; Described control system is connected with described imput output circuit.
8. wave energy generating set according to claim 7, is characterized in that, described wave energy acquisition mechanism and energy transfer mechanism are provided with many covers, and overlaps described energy transfer mechanism more and be all connected with described generator.
CN201320555895.6U 2013-09-06 2013-09-06 Wave-energy electric-power generating device Expired - Fee Related CN203560032U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103485966A (en) * 2013-09-06 2014-01-01 中国能源建设集团广东省电力设计研究院 Wave power generation unit
CN112020808A (en) * 2018-04-27 2020-12-01 Ntn株式会社 Hydroelectric power generation system connecting system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103485966A (en) * 2013-09-06 2014-01-01 中国能源建设集团广东省电力设计研究院 Wave power generation unit
CN103485966B (en) * 2013-09-06 2016-08-10 中国能源建设集团广东省电力设计研究院有限公司 Wave energy generating set
CN112020808A (en) * 2018-04-27 2020-12-01 Ntn株式会社 Hydroelectric power generation system connecting system

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Owner name: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC

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Address after: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No.

Patentee after: Company limited of China Energy Engineering Group Guangdong Electric Power Design Institute

Address before: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No.

Patentee before: Guangdong Electric Power Design Institute of CEEC

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140423

Termination date: 20200906