CN103511171B - A kind of control method of tidal current energy generating equipment - Google Patents
A kind of control method of tidal current energy generating equipment Download PDFInfo
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- CN103511171B CN103511171B CN201310469887.4A CN201310469887A CN103511171B CN 103511171 B CN103511171 B CN 103511171B CN 201310469887 A CN201310469887 A CN 201310469887A CN 103511171 B CN103511171 B CN 103511171B
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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 present invention relates to a kind of tidal current energy generating equipment, comprise cabin, generator, pylon, flow speed and direction sensor, controller, first brake, the second brake, the first impeller and the second impeller, described cabin is fixed on described pylon, and described the first impeller and described the second impeller lay respectively at the two ends in described cabin. Described cabin is stretched in the rotating shaft of described the first impeller, and is connected with the internal rotor of described generator. Described cabin is stretched in the rotating shaft of described the second impeller, and is connected with the outer rotor of described generator. Described first brake is positioned at input rotating shaft place of described internal rotor, and described the second brake is positioned at input rotating shaft place of described outer rotor. Described controller is electrically connected with described flow speed and direction sensor, described first brake and described the second brake respectively. The control method of described tidal current energy generating equipment is the tidal current speed signal detecting according to described flow speed and direction sensor and flows to signal, controls the braking state of described first brake and described the second brake, realizes and in the time of forward and reverse trend, catches marine tidal-current energy. This tidal current energy generating equipment has omitted change oar or Yawing mechanism, simple in structure, has saved cost, and control program is simple, has improved control accuracy and energy utilization rate.
Description
Technical field
The invention belongs to power generation with marine energy field, be specifically related to a kind of control method of tidal current energy generating equipment.
Background technology
Marine tidal-current energy belongs to ocean energy category, is that a kind of predictability is strong, reserves are huge, has very much the novel energy of value of exploiting and utilizing. At present, be widely used tidal current energy generating equipment and developed marine tidal-current energy.
Tidal current energy generating equipment is divided from structure, mainly contains two kinds of structural shapes of perpendicular axis type and horizontal axial type. Perpendicular axis type tidal current energy generating equipment can utilize various flows to trend, low but its impeller is caught the efficiency of marine tidal-current energy, and be not suitable for high-power grade generating set. The efficiency that the impeller of horizontal axial type tidal current energy generating equipment is caught marine tidal-current energy is high, but can only utilize the trend of the single flow direction.
In order to make horizontal axial type TRT can utilize two-way (forward and reverse) trend, mainly contain at present following several technical approach:
1) use can two-way operation blade. The impeller of this bidirectional blade is housed, all can the drive in trend in the time of flood tide and ebb tide (contrary when the flow direction of trend is with ebb tide at the incoming tide) under rotary electrification. It is more much lower than unidirectional blade that bidirectional blade is caught the efficiency of marine tidal-current energy, is not suitable for equally high-power grade generating set.
2) by the vane propeller-changing of impeller. In the time of the flow-reversal of trend, make blade around self rotating shaft Rotate 180 degree, make impeller can catch the energy of flow-reversal trend afterwards. This mode needs complicated pulp distance varying mechanism, and also will consider to become oar time, the movable sealing problem of root of blade, have increased technical difficulty and manufacturing cost greatly simultaneously.
3) by Yawing mechanism convection current. In the time of the flow-reversal of trend, make whole tidal current energy generating equipment Rotate 180 degree, make impeller just to trend, work on. This mode needs huge Yawing mechanism, makes whole device Rotate 180 degree, complex structure, and cost is high.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of tidal current energy generating equipment, this tidal current energy generating equipment has two impellers, all can catch marine tidal-current energy in the time of flood tide and ebb tide, and does not need to carry out in advance change oar or yaw maneuver, reduce structure complexity, cost-saving. The control method of this tidal current energy generating equipment is carried out different brake control programs in the time of flood tide and ebb tide, just can realize and in the time of flood tide and ebb tide, all can catch marine tidal-current energy, omit change oar or driftage control program, improve control accuracy, simplify control program, save program development cost.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of control method of tidal current energy generating equipment, described tidal current energy generating equipment comprises cabin, generator and pylon, described cabin is fixed on described pylon, described tidal current energy generating equipment also comprises flow speed and direction sensor, controller, first brake, the second brake, the first impeller and the second impeller, and described the first impeller and described the second impeller lay respectively at the two ends in described cabin. Described cabin is stretched in the rotating shaft of described the first impeller, and is connected with the internal rotor of described generator. Described cabin is stretched in the rotating shaft of described the second impeller, and is connected with the outer rotor of described generator. Described first brake is positioned at input rotating shaft place of described internal rotor, and described the second brake is positioned at input rotating shaft place of described outer rotor. Described controller is electrically connected with described flow speed and direction sensor, described first brake and described the second brake respectively.
Described flow speed and direction sensor detects flow velocity and the flow direction of trend, and by the flow velocity signal detecting with flow to signal and pass to described controller, described flow speed and direction sensor current detection to tidal current speed value be C. Described controller is according to current tidal current speed and flow to the described first brake of decision and the duty of described the second brake. In the control program of described controller, set in advance the working flow rate scope of tidal current energy generating equipment, the minimum of a value of described working flow rate scope is A, and the maximum of described working flow rate scope is B.
If C is less than A, now, described controller output brake signal is given described first brake and described the second brake, and described first brake and described second brakes in braking state, described the first impeller and described the second impeller transfixion.
If C is more than or equal to A, C is less than or equal to B, and trend is in flood tide state, trend the flow direction be forward, now, described controller output brake signal is given described first brake, described first brake is in braking state, described the first impeller transfixion, described the second brake is in release conditions, and described the second impeller rotates and catches marine tidal-current energy under the drive of trend.
If C is more than or equal to A, C is less than or equal to B, and trend is in ebb tide state, trend the flow direction be oppositely, now, described controller output brake signal is given described the second brake, described the second brake is in braking state, described the second impeller transfixion, described first brake is in release conditions, and described the first impeller rotates and catches marine tidal-current energy under the drive of trend.
If C is greater than B, now, described controller output brake signal is given described first brake and described the second brake, and described first brake and described second brakes in braking state, described the first impeller and described the second impeller transfixion.
Further, between described the first impeller and described internal rotor, be provided with the first gear-box, described the first gear-box is fixed on the inwall in described cabin. Described the first impeller is connected by the internal rotor of described the first gear-box and described generator, and one end of described the first gear-box connects the rotating shaft of described the first impeller, and the other end of described the first gear-box connects described internal rotor.
Further, between described the second impeller and described outer rotor, be provided with the second gear-box, described the second gear-box is fixed on the inwall in described cabin. Described the second impeller is connected by the outer rotor of described the second gear-box and described generator, and one end of described the second gear-box connects the rotating shaft of described the second impeller, and the other end of described the second gear-box connects described outer rotor.
Further, described generator is arranged on described engine room inside by bearing.
Further, the outer rotor of described generator is provided with conducting slip ring, and described conducting slip ring is connected and used electric loading by submarine cable.
Further, described flow speed and direction sensor is arranged on the outer wall of described cabin.
Adopt the present invention to there is following beneficial effect:
1, have two towards impeller, can in the time of flood tide and ebb tide, adapt to forward and reverse trend, catch marine tidal-current energy, improved marine tidal-current energy utilization rate.
2, two impellers internal rotor and outer rotor of connecting generator respectively, in the situation that not needing to become oar or Yawing mechanism, only rely on braking mechanism just can realize in trend and convert the duty that converts two impellers when forward and reverse, braking mechanism relatively becomes oar or Yawing mechanism is simple in structure, cost-saving.
3, correspondingly, in control method, also omit change oar or driftage program, only needed according to flow velocity and flow to signal to carry out brake program, just can realize the energy of catching forward and reverse trend.
Brief description of the drawings
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is the structural representation of the first embodiment of a kind of tidal current energy generating equipment of the present invention;
Fig. 2 is the structural representation of the second embodiment of a kind of tidal current energy generating equipment of the present invention.
Detailed description of the invention
With reference to Fig. 1, Figure 1 shows that the structural representation of the first embodiment of a kind of tidal current energy generating equipment of the present invention. In this embodiment, described tidal current energy generating equipment comprises the first impeller 11, the second impeller 12, cabin 2, generator 30, pylon 4, flow speed and direction sensor 5, controller 6, the first gear-box 81 and the second gear-box 82, described cabin 2 is fixed on described pylon 4, and described the first impeller 11 and described the second impeller 12 lay respectively at the two ends in described cabin 2. Described cabin 2 is in sealing state, by isolated the inner each parts of extraneous seawater and described cabin 2.
Described the first gear-box 81 and described the second gear-box 82 are all fixed on the inwall in described cabin 2. Described cabin 2 is stretched in the rotating shaft of described the first impeller 11, and is connected with one end of described the first gear-box 81; The other end of described the first gear-box 81 connects the internal rotor 31 of described generator 30. Described first brake 71 is positioned at input rotating shaft place of described internal rotor 31.
Described cabin 2 is stretched in the rotating shaft of described the second impeller 12, and is connected with one end of described the second gear-box 82; The other end of described the second gear-box 82 connects the outer rotor 32 of described generator 30. Described the second brake 72 is positioned at input rotating shaft place of described outer rotor 32.
Described flow speed and direction sensor 5 is arranged on 2 outer walls of described cabin, for detection of tidal current speed and the flow direction in described tidal current energy generating equipment marine site of living in. Described controller 6 is electrically connected with described flow speed and direction sensor 5, first brake 71 and the second brake 72 respectively, described flow speed and direction sensor 5 can transmit the tidal current speed signal detecting and flow to signal to described controller 6, and described controller 6 can be controlled the brake of described first brake 71 and described the second brake 72.
Described generator 30 is arranged on 2 inside, described cabin by bearing 21, described bearing 21 by the outer rotor of described generator 30 32 longitudinal registers in 2 inside, described cabin. The outer rotor 32 of described generator 30 is provided with conducting slip ring 33, and described conducting slip ring 33 is connected and used electric loading by submarine cable.
With reference to Fig. 2, Figure 2 shows that the structural representation of the second embodiment of a kind of tidal current energy generating equipment of the present invention. The difference of the second embodiment and the first embodiment is, the second embodiment has omitted described the first gear-box 81 and the second gear-box 82, the rotating shaft of described the first impeller 11 is directly connected with the internal rotor 31 of described generator 30, and the rotating shaft of described the second impeller 12 is directly connected with the outer rotor 32 of described generator 30.
Equally, also can have the third and the 4th kind of embodiment, wherein, the relative the first embodiment of the third embodiment only omits 81, the four kinds of relative the first embodiment of embodiment of described the first gear-box and only omits described the second gear-box 82.
For first to fourth kind of embodiment recited above, every kind of embodiment all has identical control method, and the control method of tidal current energy generating equipment of the present invention is as described below:
1) described flow speed and direction sensor 5 detects flow velocity and the flow direction of trend, and by the flow velocity signal detecting with flow to signal and pass to described controller 6, described flow speed and direction sensor 5 current detection to tidal current speed value be C. Described controller 6 is according to current tidal current speed and flow to the described first brake 71 of decision and the duty of described the second brake 72. In the control program of described controller 6, set in advance the working flow rate scope of tidal current energy generating equipment, the minimum of a value of described working flow rate scope is A, and the maximum of described working flow rate scope is B.
2) if C is less than A, now, described controller 6 is exported brake signal to described first brake 71 and described the second brake 72, and described first brake 71 and described second brakes 72 in braking state, described the first impeller 11 and described the second impeller 12 transfixions.
3) if C is more than or equal to A, C is less than or equal to B, and trend is in flood tide state, trend the flow direction be forward, now, described controller 6 export brake signal give described first brake 71, described first brake 71 is in braking state, described the first impeller 11 transfixions, described the second brake 72 is in release conditions, and described the second impeller 12 rotates and catches marine tidal-current energy under the drive of trend.
4) if C is more than or equal to A, C is less than or equal to B, and trend is in ebb tide state, trend the flow direction be oppositely, now, described controller 6 is exported brake signal to described the second brake 72, described the second brake 72 is in braking state, described the second impeller 12 transfixions, described first brake 71 is in release conditions, and described the first impeller 11 rotates and catches marine tidal-current energy under the drive of trend.
5) if C is greater than B, now, described controller 6 is exported brake signal to described first brake 71 and described the second brake 72, and described first brake 71 and described second brakes 72 in braking state, described the first impeller 11 and described the second impeller 12 transfixions.
Wherein, according to the difference of the installation direction of described tidal current energy generating equipment, may have as described below from the 3rd above) and the 4th) the different duty of item: if C is more than or equal to A, C is less than or equal to B, in trend in flood tide state, trend the flow direction while being forward, described the second brake 72 is in braking state; In trend in ebb tide state, trend the flow direction while being reverse, described first brake 71 is in braking state.
The control method of this tidal current energy generating equipment only comprises flow rate and direction trace routine and brake control program, with respect to becoming oar or driftage control program, and the program simplification of this control method, control accuracy is high, and has saved program development cost.
Claims (6)
1. the control method of a tidal current energy generating equipment, described tidal current energy generating equipment comprises cabin (2), generator (30) and pylon (4), described cabin (2) is fixed on described pylon (4), described tidal current energy generating equipment also comprises flow speed and direction sensor (5), controller (6), first brake (71), the second brake (72), the first impeller (11) and the second impeller (12), and described the first impeller (11) and described the second impeller (12) lay respectively at the two ends of described cabin (2); Described cabin (2) is stretched in the rotating shaft of described the first impeller (11), and is connected with the internal rotor (31) of described generator (30); Described cabin (2) is stretched in the rotating shaft of described the second impeller (12), and is connected with the outer rotor (32) of described generator (30); Described first brake (71) is positioned at input rotating shaft place of described internal rotor (31), and described the second brake (72) is positioned at input rotating shaft place of described outer rotor (32); Described controller (6) is electrically connected with described flow speed and direction sensor (5), described first brake (71) and described the second brake (72) respectively;
It is characterized in that: described flow speed and direction sensor (5) detects flow velocity and the flow direction of trend, and by the flow velocity signal detecting with flow to signal and pass to described controller (6), described flow speed and direction sensor (5) current detection to tidal current speed value be C; Described controller (6) is according to current tidal current speed and flow to the described first brake of decision (71) and the duty of described the second brake (72); In the control program of described controller (6), set in advance the working flow rate scope of tidal current energy generating equipment, the minimum of a value of described working flow rate scope is A, and the maximum of described working flow rate scope is B;
If C is less than A, now, described controller (6) output brake signal is given described first brake (71) and described the second brake (72), described first brake (71) and described second brakes (72) in braking state, described the first impeller (11) and described the second impeller (12) transfixion;
If C is more than or equal to A, C is less than or equal to B, and trend is in flood tide state, trend the flow direction be forward, now, described controller (6) output brake signal is given described first brake (71), described first brake (71) is in braking state, described the first impeller (11) transfixion, described the second brake (72) is in release conditions, and described the second impeller (12) rotates and catches marine tidal-current energy under the drive of trend;
If C is more than or equal to A, C is less than or equal to B, and trend is in ebb tide state, trend the flow direction be oppositely, now, described controller (6) output brake signal is given described the second brake (72), described the second brake (72) is in braking state, described the second impeller (12) transfixion, described first brake (71) is in release conditions, and described the first impeller (11) rotates and catches marine tidal-current energy under the drive of trend;
If C is greater than B, now, described controller (6) output brake signal is given described first brake (71) and described the second brake (72), described first brake (71) and described second brakes (72) in braking state, described the first impeller (11) and described the second impeller (12) transfixion.
2. according to control method claimed in claim 1, it is characterized in that: between described the first impeller (11) and described internal rotor (31), be provided with the first gear-box (81), described the first gear-box (81) is fixed on the inwall of described cabin (2); Described the first impeller (11) is connected by described the first gear-box (81) and the internal rotor (31) of described generator (30), one end of described the first gear-box (81) connects the rotating shaft of described the first impeller (11), and the other end of described the first gear-box (81) connects described internal rotor (31).
3. according to the control method described in claim 1 or 2, it is characterized in that: between described the second impeller (12) and described outer rotor (32), be provided with the second gear-box (82), described the second gear-box (82) is fixed on the inwall of described cabin (2); Described the second impeller (12) is connected by described the second gear-box (82) and the outer rotor (32) of described generator (30), one end of described the second gear-box (82) connects the rotating shaft of described the second impeller (12), and the other end of described the second gear-box (82) connects described outer rotor (32).
4. according to control method claimed in claim 3, it is characterized in that: described generator (30) is arranged on inside, described cabin (2) by bearing (21).
5. according to control method claimed in claim 4, it is characterized in that: the outer rotor (32) of described generator (30) is provided with conducting slip ring (33), and described conducting slip ring (33) is connected and used electric loading by submarine cable.
6. according to control method claimed in claim 5, it is characterized in that: described flow speed and direction sensor (5) is arranged on the outer wall of described cabin (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310469887.4A CN103511171B (en) | 2013-10-10 | 2013-10-10 | A kind of control method of tidal current energy generating equipment |
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| CN201310469887.4A CN103511171B (en) | 2013-10-10 | 2013-10-10 | A kind of control method of tidal current energy generating equipment |
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| CN103511171A CN103511171A (en) | 2014-01-15 |
| CN103511171B true CN103511171B (en) | 2016-05-11 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953494B (en) * | 2014-04-17 | 2016-06-08 | 来安县新元机电设备设计有限公司 | Ocean current energy generator and protection device thereof |
| CN104564489B (en) * | 2014-12-30 | 2016-11-30 | 浙江大学 | The marine tidal-current energy wheel hub structure of passive Power Limitation |
| CN104763581B (en) * | 2015-04-02 | 2017-05-24 | 国电联合动力技术有限公司 | Tidal current energy generator set and yawing method thereof |
| JP6756533B2 (en) * | 2015-11-02 | 2020-09-16 | Ntn株式会社 | Hydropower and power generation systems |
| CN105591486A (en) * | 2015-12-21 | 2016-05-18 | 浙江海洋学院 | Electromotor cover for half-shielding type tidal current energy generating set |
| CN105736220B (en) * | 2016-03-15 | 2018-09-21 | 浙江大学 | A kind of power generation device from sea current of single impeller symmetric form big L/D ratio |
| CN106121894B (en) * | 2016-08-10 | 2018-09-04 | 国家海洋技术中心 | A kind of marine tidal-current energy blade power generation performance detection device |
| CN107420250A (en) * | 2017-04-11 | 2017-12-01 | 安徽军迪信息技术有限公司 | A kind of device to be generated electricity using ocean current |
| CN110767050B (en) * | 2019-10-29 | 2022-09-06 | 北京维蓝清能科技有限公司 | Impeller type tidal current power generation experimental device |
| CN115014745B (en) * | 2022-07-01 | 2023-09-19 | 长春工程学院 | Device for detecting impeller strength of tidal current energy unit and application method of device |
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