Method for controlling the operation of a submersible power plant
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F03B-013/10
F03B-017/06
F03B-013/26
출원번호
US-0506671
(2014-08-29)
등록번호
US-10167842
(2019-01-01)
국제출원번호
PCT/SE2014/050996
(2014-08-29)
국제공개번호
WO2016/032382
(2016-03-03)
발명자
/ 주소
Dölerud, Erik
Quappen, Arne
Norinder, Christian
Andersson, Mattias
출원인 / 주소
MINESTO AB
대리인 / 주소
Morrison & Foerster LLP
인용정보
피인용 횟수 :
0인용 특허 :
3
초록▼
The invention relates to a method for controlling the operation of a submersible power plant (1) and a submersible power plant (1). The submersible power plant (1) comprises a structure (2) and a vehicle (3). The vehicle (3) comprises at least one wing (4). The vehicle (3) is arranged to be secured
The invention relates to a method for controlling the operation of a submersible power plant (1) and a submersible power plant (1). The submersible power plant (1) comprises a structure (2) and a vehicle (3). The vehicle (3) comprises at least one wing (4). The vehicle (3) is arranged to be secured to the structure (2) by means of at least one tether (5). The vehicle (3) is arranged to move in a predetermined trajectory by means of a fluid stream passing the vehicle (3). The vehicle (3) is arranged to change the angle of attack of the at least one wing (4). The method comprises: I: determining if the speed of the fluid passing the vehicle (3) is higher than a predetermined value; or II: determining if the speed of the fluid passing the vehicle (3) is lower than the predetermined value. The vehicle (3) changes the angle of attack for different situations depending on if the speed is higher or lower than the predetermined trajectory.
대표청구항▼
1. A method for controlling operation of a submersible power plant, the submersible power plant comprising a structure and a vehicle, the vehicle comprising at least one wing, the vehicle being arranged to be secured to the structure by means of at least one tether; the vehicle being arranged to mov
1. A method for controlling operation of a submersible power plant, the submersible power plant comprising a structure and a vehicle, the vehicle comprising at least one wing, the vehicle being arranged to be secured to the structure by means of at least one tether; the vehicle being arranged to move in a predetermined trajectory by means of a fluid stream passing the vehicle, wherein the vehicle comprises a pitch control system being arranged to change an angle of attack of the at least one wing, the method comprising: determining if a speed of the fluid passing the vehicle is higher than a predetermined value,if the speed of the fluid passing the vehicle is higher than the predetermined value, Ia: starting the vehicle by adjusting the angle of attack of the at least one wing to reach operation depth of the vehicle, and initiate movement of the vehicle in a predetermined trajectory starting power generation, and; Ib: controlling the speed of the vehicle during power generation by adjusting the angle of attack of the at least one wing to optimize power output, and; Ic: stopping the vehicle by adjusting the angle of attack of the at least one wing such that a lift exerted on the wing by the fluid passing the vehicle is essentially zero, and determining if the vehicle has lost power,if the vehicle has lost power, IVa: stopping the vehicle by adjusting the angle of attack of the at least one wing such that the lift exerted by the fluid passing the vehicle is essentially zero, IVb: determining that power has been restored to the vehicle, IVc: upon determining that power has been restored to the vehicle, adjusting the angle of attack of the at least wing to initiate movement of the vehicle in the predetermined trajectory starting power generation, and; if the speed of the fluid passing the vehicle is lower than the predetermined value, IIa: adjusting the angle of attack of the at least one wing to move to and/or to keep the vehicle in a position that enables the vehicle to start when the speed of the fluid passing the vehicle is determined to be higher than the predetermined value. 2. The method according to claim 1, wherein, if the speed of the fluid passing the vehicle is higher than the predetermined value and the vehicle is moving in a predetermined trajectory, the method comprises: III: determining if the vehicle is in danger of colliding with an object traversing the predetermined trajectory, if the vehicle is determined to be in danger of colliding with an object traversing the predetermined trajectory,IIIa: stopping the vehicle by adjusting the angle of attack of the at least one wing such that the lift exerted by the fluid passing the vehicle is essentially zero,IIIb: determining that the object traversing the predetermined trajectory has left the predetermined trajectory,IIIc: upon determining that the object traversing the predetermined trajectory has left the predetermined trajectory, adjust the angle of attack of the at least one wing to initiate movement of the vehicle in the predetermined trajectory starting power generation. 3. The method according to claim 1, wherein, when controlling the speed of the vehicle during power generation, the tether load is controlled by adjusting the angle of attack of the at least one wing. 4. The method according to claim 1, wherein the angle of attack of the vehicle is changed by means of a pitch control system being arranged to extend or retract a rear strut of the vehicle, wherein the pitch control system is attached to the rear strut, which in turn is attached to the tether. 5. The method according to claim 1, wherein the angle of attack of the vehicle is changed by means of a pitch control system being arranged to change the attachment position of the strut along the length of a nacelle attached to the wing or the length of the wing. 6. The method according to claim 1, wherein the angle of attack of the vehicle is changed by means of a pitch control system, wherein the pitch control system comprises an elevator. 7. A submersible power plant, comprising: a structure and a vehicle, the vehicle comprising at least one wing, the vehicle being arranged to be secured to the structure by means of at least one tether; the vehicle being arranged to move in a predetermined trajectory by means of a fluid stream passing the vehicle;a control unit; anda sensor unit,wherein the vehicle comprises a pitch control system comprised in the nacelle or integrated in the wing, the pitch control system being connected to a rear strut,the pitch control system changes an angle of attack of the at least one wing according to the method of claim 1, the angle of attack of the at least one wing is arranged to be changed by the control unit upon inputs from the sensor unit,the control unit is arranged to determine if the speed of the fluid passing the vehicle is higher or lower than a predetermined value based on inputs from the sensor unit, andthe pitch control system is powered in an operating state, such that the rear strut, automatically fully extends when power to the pitch control system is lost. 8. The submersive power plant according to claim 7, wherein the angle of attack of the vehicle is changed by means of the pitch control system being arranged to extend or retract the rear strut of the vehicle, wherein the pitch control system is attached to the rear strut, which in turn is attached to the tether. 9. The submersive power plant according to claim 8, wherein the vehicle comprises a nacelle comprising the pitch control system, the nacelle being attached to the wing, wherein the rear strut is arranged to be attached to the pitch control system in the nacelle such that the rear strut can be extended and retracted by the pitch control system. 10. The submersive power plant according to claim 8, wherein the pitch control system is integrated in the wing, wherein the rear strut is arranged to be attached to the pitch control system in the wing such that the rear strut can be extended and retracted by the pitch control system. 11. The submersive power plant according to claim 7, wherein the rear strut is attached to the pitch control system by a pliable connection means. 12. The submersive power plant according to claim 11, wherein the pliable connection means is one of a rope, cable, cord, string or wire. 13. The submersive power plant according to claim 11, wherein the pitch control system comprises a spiral-shaped drum for storing the pliable connection means and a guide means for guiding the pliable connection means during extension and retraction of the pliable connection means. 14. The submersive power plant according to claim 7, wherein the rear strut has a hydrodynamic cross-section. 15. The submersive power plant according to claim 7, wherein the pitch control system comprises a clutch, transmission, motor and brake. 16. The submersive plant according to claim 7, wherein the angle of attack of the vehicle is changed by means of a pitch control system being arranged to change the attachment position of the strut along the length of a nacelle attached to the wing or the length of the wing. 17. The submersive power plant according to claim 7, wherein the angle of attack of the vehicle is changed by means of a pitch control system, wherein the pitch control system comprises an elevator. 18. A nontransitory computer-readable medium for use with a submersible power plant having computer executable instructions for performing the method of claim 1.
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이 특허에 인용된 특허 (3)
Dehlsen, James G. P., Mechanism for extendable rotor blades for power generating wind and ocean current turbines and means for counter-balancing the extendable rotor blade.
Dehlsen James G. P. ; Dehlsen James B. ; Deane Geoffrey F., Method of controlling operating depth of an electricity-generating device having a tethered water current-driven turbine.
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