Drivetrain and method for drives having widely spaced oeprating points
First Claim
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1. A device to achieve a high speed spread at high efficiency in a powertrain of a driven machine or system, the device comprising:
- (i) a first power machine (A1) and a second power machine (A2) which are indirectly—
via appropriate coupling elements, transmission links or translation devices (7, 8)—
or directly torque-proof connected to a carrier shaft (S) and a slower transmission central shaft (2), respectively, of an epicyclic gear (3) that determine a fixed carrier train ratio, and(ii) a work machine (L) which is indirectly—
via the appropriate coupling elements, transmission links or translation devices—
or directly torque-proof connected with a faster transmission central shaft (1) of the epicyclic gear (3), and(iii) at least one coupling device (6) which blocks internal movements of the epicyclic gear (3) in a first rotational direction and permits the internal movements in an opposite rotational direction,further comprising one of the following;
at least one of the coupling devices (6, 7, 8) is torsional flexibly connected with one or several of the involved transmission linkages of the device, ora speed for optimum machine performance with regard to efficiency is essentially same or deviates from the first and the second power machine by a maximum of 10%, ora ratio of torque of optimum machine performance with regard to efficiency of the first and the second power machines is essentially equal to an absolute value of a term defined by a reciprocal of a product of a stationary translation and a stationary efficiency in a power flow direction of the epicyclic gear, reduced by 1, or does not deviate more than a maximum of 10% from this term.
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Abstract
A drive unit provided with at least one powertrain which is equipped with at least two widely spaced operating points for achieving a high rotational speed spread with a high degree of efficiency. A method for controlling the load speed of a corresponding device, specifically, a wind turbine plant is also disclosed.
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Citations
17 Claims
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1. A device to achieve a high speed spread at high efficiency in a powertrain of a driven machine or system, the device comprising:
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(i) a first power machine (A1) and a second power machine (A2) which are indirectly—
via appropriate coupling elements, transmission links or translation devices (7, 8)—
or directly torque-proof connected to a carrier shaft (S) and a slower transmission central shaft (2), respectively, of an epicyclic gear (3) that determine a fixed carrier train ratio, and(ii) a work machine (L) which is indirectly—
via the appropriate coupling elements, transmission links or translation devices—
or directly torque-proof connected with a faster transmission central shaft (1) of the epicyclic gear (3), and(iii) at least one coupling device (6) which blocks internal movements of the epicyclic gear (3) in a first rotational direction and permits the internal movements in an opposite rotational direction, further comprising one of the following; at least one of the coupling devices (6, 7, 8) is torsional flexibly connected with one or several of the involved transmission linkages of the device, or a speed for optimum machine performance with regard to efficiency is essentially same or deviates from the first and the second power machine by a maximum of 10%, or a ratio of torque of optimum machine performance with regard to efficiency of the first and the second power machines is essentially equal to an absolute value of a term defined by a reciprocal of a product of a stationary translation and a stationary efficiency in a power flow direction of the epicyclic gear, reduced by 1, or does not deviate more than a maximum of 10% from this term. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An airborne wind energy converter with extendible and retractable wind sails and a powertrain device to achieve a high speed spread at high efficiency, the powertrain device comprising
(a) a first power machine (A1) and a second power machine (A2), (b) a work machine (L), and (c) an epicyclic gear (3) having a stationary translation value which is greater than 1 in terms of amount, and comprising the following transmission linkages: an input transmission carrier shaft (S), a slower input transmission central shaft (2), a faster output transmission central shaft (1), and at least one freewheel coupling device (6) which blocks internal movements of the epicyclic gear in a first rotational direction and permits the movements in an opposite rotational direction;
wherein(i) the transmission carrier shaft (S) is torque proof connected to the first power machine (A1) to form drive (A-S), the slower transmission central shaft (2) to the second power machine (A2) to form drive (A-2), and the faster transmission central shaft (1) to the work machine (L), (ii) in a first operating mode (Modus A), the drives (A-S) and (A-2) are forcibly coupled at the same speed by the at least one freewheel coupling device (6) and have the same rotational direction, and unidirectional torques are applied to the transmission shafts (2) and (S), to call up, on the output transmission central shaft (1), the sum of the input power with the speed of said drive shafts, and (iii) in a second operating mode (Modus E), the movable transmission linkages and the drives (A-S) and (A-2) are released by the freewheel coupling device (6) which have the opposite rotational direction, to call up, on the output transmission central shaft (1), the sum of the input power with a higher speed. - View Dependent Claims (15, 16, 17)
Specification