Wind power turbine combining a cross-flow rotor and a magnus rotor
View Patent ↗A wind power hybrid rotor of a wind power plant for converting wind energy into drive energy is provided. For a utilization of the wind energy in a manner as efficient as possible, a wind power hybrid rotor is provided with a cross-flow rotor, a guide device and a Magnus rotor. The cross-flow rotor is supported so as to be rotatable about a rotational axis and has a plurality of axially extending rotor blades. The guide device has a housing segment partially enclosing the cross-flow rotor in the circumferential direction in such a manner that the cross-flow rotor can be driven by inflowing wind. The Magnus rotor axis is arranged within the cross-flow rotor, and the Magnus rotor axis extends in the direction of the rotational axis. The Magnus rotor has a closed lateral surface and is rotatably driven about the Magnus rotor axis by a drive device.
1. A wind power hybrid rotor, comprising
a cross-flow rotor;
a guide device; and
a Magnus rotor;
wherein the cross-flow rotor is configured rotatable about a rotational axis and has a plurality of axially extending rotor blades,
wherein the guide device has a contiguous circular arc shaped housing segment enclosing no more than one quarter of the cross-flow rotor in a circumferential direction in such a manner that the cross-flow rotor is driveable by inflowing wind,
wherein the Magnus rotor is configured within the cross-flow rotor so that a Magnus rotor axis extends in a direction of the rotational axis, and
wherein the Magnus rotor has a closed lateral surface and is rotatably drivable by a drive device about the Magnus rotor axis.
2. The wind power hybrid rotor according to claim 1 , wherein when rotating, the Magnus rotor is configured to cause, on its lee side, a deflection of air flow with respect to an inflow direction.
3. The wind power hybrid rotor according to claim 2 , wherein the deflection occurs in such a manner that air flow flowing through the cross-flow rotor acts in an expanded circular arc on the rotor blades and drives the rotor blades.
4. The wind power hybrid rotor according to claim 3 , wherein the rotor blades each have a cross-section with a curved shape comprising a concave and a convex side, and wherein the concave side faces toward the Magnus rotor.
5. The wind power hybrid rotor according to claim 1 , wherein the Magnus rotor is driven with a circumferential speed that is approximately one to four times an inflow speed of the wind power hybrid rotor.
6. The wind power hybrid rotor according to claim 1 , wherein the cross-flow rotor drives the Magnus rotor.
7. The wind power hybrid rotor according to claim 1 , wherein the housing segment has a displacement mechanism and is configured in a pivotable manner, at least with respect to the rotational axis of the cross-flow rotor, and wherein the displacement mechanism is settable depending on an inflow direction in such a manner that the housing segment shields the cross-flow rotor with respect to the rotational axis of the cross-flow rotor on a windward side on one side of the rotational axis.
8. A wind power plant, comprising:
a rotor unit configured to convert wind movements into a rotational movement;
a work device configured to convert kinetic energy of the rotational movement into work to be performed; and
a gear device configured to couple the rotor unit to the work device to transmitting the rotational movement to the work device;
wherein the rotor unit has at least one wind power hybrid rotor comprising
a cross-flow rotor;
a guide device; and
a Magnus rotor;
wherein the cross-flow rotor is configured rotatable about a rotational axis and has a plurality of axially extending rotor blades,
wherein the guide device has a contiguous circular arc shaped housing segment enclosing no more than one quarter of the cross-flow rotor in a circumferential direction in such a manner that the cross-flow rotor is driveable by inflowing wind,
wherein the Magnus rotor is configured within the cross-flow rotor so that a Magnus rotor axis extends in a direction of the rotational axis, and
wherein the Magnus rotor has a closed lateral surface and is rotatably drivable by a drive device about the Magnus rotor axis.
9. The wind power plant according to claim 8 , wherein the work device is current generator configured to generate electrical energy.
10. The wind power plant according to claim 8 , wherein the work device is a pump unit.
11. A method for converting wind energy into drive energy for performing work, the method comprising the following steps:
rotating a cross-flow rotor that is supported so as to be rotatable about a rotational axis and which has a plurality of axially extending rotor blades;
moving a guide device having a contiguous circular arc shaped housing segment enclosing no more than one quarter of the cross-flow rotor in the circumferential direction to a position with respect to inflowing wind and the cross-flow rotor such that the cross-flow rotor is driven by the inflowing wind;
rotating a Magnus rotor that is arranged within the cross-flow rotor and a Magnus rotor axis of which extends in a direction of the rotational axis, wherein the Magnus rotor has a closed lateral surface and is driven by a drive device about the Magnus rotor axis; and
driving a work device by the cross-flow rotor,
wherein the Magnus rotor deflects, on its lee side, air flow with respect to an inflow direction in such a manner that the air flow flowing through the cross-flow rotor acts on the rotor blades in an expanded circular arc.