River venturi power amplification, storage and regeneration system and method
Methods, systems and apparatuses including systems and methods that can be used for operating a hydrokinetic turbine such as along one or more flow channels of a river for power generation is disclosed. The hydrokinetic turbine can be positioned within the one or more flow channels or can be shaped to form one or more flows and can be turned by the flow of the river.
1. A system for use in power generation, the system comprising:
a hydrokinetic turbine comprising:
a water flow capturing apparatus having an outer nacelle, the outer nacelle having an inlet section and a second section with a reduced cross-sectional area relative to the inlet section;
an inner wall within the outer nacelle, the inner wall dividing a cavity through the outer nacelle into at least a first flow passage and a second flow passage;
a first plurality of blades and a first rotor positioned in the first flow passage; and
a second plurality of blades and a second rotor positioned in the second flow passage;
the hydrokinetic turbine being configured to be turned by a flow of water to generate a torque;
one or more shafts coupled to the hydrokinetic turbine;
one or more flywheels coupled to the one or more shafts;
a hydraulic fluid storage vessel configured to store a hydraulic fluid under pressure;
a hydraulic motor including a motor output configured to receive the hydraulic fluid stored under pressure and generate a torque on the motor output in response;
a generator operatively coupled to an output shaft coupled to the one or more flywheels and the motor output, wherein the generator produces electrical power in response to at least one of rotation of: the output shaft, the torque of the motor output, or both;
one or more power split transmission couplings configured to transmit the torque to the output shaft at an adjustable torque ratio and divert the hydraulic fluid in response to the output shaft exceeding a threshold power, wherein the one or more power split transmission couplings comprise:
a cam ring and a hub disposed between the one or more shafts and the output shaft, a hydraulic fluid disposed between the cam ring and the hub, wherein the hub includes a plurality of circumferentially spaced slots configured to house a plurality of vanes therein, the plurality of vanes configured to be movable between a retracted position, a fully extended position, or any partially extended position therebetween;
in the retracted position, the one or more shafts are independently rotatable with respect to the output shaft;
in the fully extended position and the any partially extended position therebetween, the plurality of vanes are configured to work the hydraulic fluid and transmit torque from the one or more shafts to the output shaft at an adjustable torque ratio;
an inlet port communicatively coupled to a hydraulic fluid source, the hydraulic fluid transportable from the hydraulic fluid source to the one or more power split transmission couplings; and
an outlet port having a closed configuration and an at least partially open configuration, the hydraulic fluid releasable from the one or more power split transmission couplings through the outlet port in response to a power applied to the output shaft exceeding a threshold power, wherein the released hydraulic fluid exits the one or more power split transmission couplings and is stored under pressure.
2. The system of claim 1 , further comprising an electronic controller coupled to the one or more power split transmission couplings, wherein the electronic controller is configured to control the one or more power split transmission couplings to pulse to change a rotational speed of at least one of the one or more flywheels and the hydrokinetic turbine.
3. The system of claim 2 , further comprising:
a diversion gate that is controlled by the electronic controller to articulate within the cavity to direct relatively more flow to one of the first flow passage or the second flow passage, wherein the diversion gate blocks a substantial portion of a flow of water to one of the first flow passage or the second flow passage when the diversion gate is articulated to a first position;
wherein the second plurality of blades includes at least two sets of blades, wherein a first of the at least two sets of blades are spaced from a second of the at least two sets of blades by the second rotor;
a slide door is moveable at a signal from the electronic controller to block a flow of water through a portion of the second flow passage such that at least one of the at least two sets of blades are not loaded by the flow of the water;
wherein the outer nacelle includes one or more bypass gates to allow a portion of a flow of water within the cavity to exit from the outer nacelle prior to entering one or both of the first flow passage or the second flow passage, wherein the electronic controller is configured to actuate the one or more bypass gates to fully open, partially open or close in a coordinated manner with the pulse of the one or more power split transmission couplings.
4. The system of claim 1 , wherein the second section is configured as a venturi and the first plurality of blades and the first rotor are positioned in the venturi in the first flow passage and the second plurality of blades and the second rotor are positioned in the venturi in the second flow passage.
5. The system of claim 1 , further comprising a diversion gate that articulates within the cavity to direct relatively more flow to one of the first flow passage or the second flow passage.
6. The system of claim 5 , wherein the diversion gate blocks a substantial portion of a flow of water to one of the first flow passage or the second flow passage when articulated to a first position.
7. The system of claim 6 , wherein the diversion gate is lockable in a neutral position so as not to divert relatively more of the flow of the water to the first flow passage or the second flow passage.
8. The system of claim 1 wherein the outer nacelle includes one or more bypass gates to allow a portion of a flow of water within the cavity to exit from the outer nacelle prior to entering one or both of the first flow passage or the second flow passage.
9. The system of claim 1 , further comprising a slide door configured to be selectively moved into and out of the second flow passage.
10. The system of claim 9 , wherein the second plurality of blades includes at least two sets of blades, wherein a first of the at least two sets of blades is spaced from a second of the at least two sets of blades by the second rotor.
11. The system of claim 10 , wherein the slide door blocks a flow of water through a portion of the second flow passage.
12. The system of claim 1 , further comprising:
a flow channel, wherein the flow channel diverts an amount of flow from a main flow;
wherein the hydrokinetic turbine is positioned within the flow channel, the hydrokinetic turbine having a turbine rotor configured to produce a rotor torque in response to an applied loading by the flow along the flow channel.