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US 7,843,077 B2Granted
Pulsed energy transfer
OwnerDouglas P. Arduiniinventor
Life of this patent
Estimating the term…
Abstract
A system capable of converting fluid energy into electrical energy in conditions of low fluid flow is provided. In an embodiment, the system may engage and disengage an energy converter via an automatic clutch. In an embodiment, the transmission of energy to an energy converter is controlled by switching the energy converter on and off. In another embodiment, the flow of electrical energy to an electrical load is controlled by a switching device. In another embodiment, a funnel is used for condensing the flow of fluid moving through the system.
Claims20
A system comprising:
- a turbine for converting energy of a flowing medium into electrical energy;
- a load;
- the load having at least two states,
- in a first of the at least two states the load is engaged with the turbine, slowing the speed at which the turbine spins, and
- in a second of the at least two states the load is disengaged from the turbine,
- the load being configured such that
- the load engages the turbine at a first threshold value, which is a turbine speed that is high enough to generate energy for duration of time after the load engages, while the turbine slows down as a result of the load engaging, but that is not high enough for the turbine to continue to generate energy with the load engaged, and
- the load disengages from the turbine when the speed of the turbine is below a second threshold value, the second threshold value being less than the first threshold value;
- a controller that periodically engages and disengages the load from a turbine at fixed intervals of time, while the fluid flows at a fixed speed;
- the time interval being dependent on a fluid speed of the fluid.
7 more elements
A system comprising:
- a turbine for converting energy of a flowing medium into electrical energy;
- a load;
- and
- a mechanism that is configured to engage the load while the turbine is spinning, the load has at least two states, in a first of the at least two states the load is engaged with the turbine, slowing the speed at which the turbine spins, and then in a second of the at least two states the load is disengaged from the turbine, the mechanism causes the load to disengage from the turbine when the speed of the turbine is below a threshold value;
- the load includes a generator, and engaging the load engages the generator;
- the turbine including at least blades mounted on a first shaft that rotates, such that as a fluid flows passed that blades of the turbine, the fluid causes the blades to rotate;
- and as the blades rotate, the first shaft rotates with the blades, the generator including at least
- a stator having a stationary magnet that generates a magnetic field a second shaft,
- a rotator connected to the second shaft, the rotator includes at least coils of electrical wire, as the second shaft rotates, the rotator rotates, which generates an electric current in the coils;
- and
- the mechanism including at least a clutch for engaging the first shaft, which is connected to the turbine, to the second shaft, which is connected to the generator;
- the system further comprising:
- a speed sensor for sensing the speed at which blades of the turbine rotate, signals from the speed indicating a speed at which the turbine rotates;
- and
- a controller for causing
- the clutch to engage and disengage, based on the signals from speed sensor, which are received by the controller, the controller causing the clutch to engage the first shaft to the second shaft when the turbine spins at a speed above a first threshold speed, and
- the clutch to disengage when the turbine spins at a speed that is below a second threshold speed that is below the first threshold speed;
- and
- the controller also periodically engages and disengages the load from a turbine at fixed intervals of time, while the fluid flows at a fixed speed;
- the time interval being dependent on a fluid speed of the fluid.
17 more elements
A system comprising:
- a turbine for converting energy of a flowing medium into electrical energy;
- a load;
- and
- a mechanism that is configured to engage the load while the turbine is spinning, the load has at least two states, in a first of the at least two states the load is engaged with the turbine, slowing the speed at which the turbine spins, and then in a second of the at least two states the load is disengaged from the turbine, the mechanism causes the load to disengage from the turbine when the speed of the turbine is below a threshold value;
- the load including at least an electrical load;
- the turbine including at least blades attached to a shaft, such that as a fluid flows passed the blades of the turbine, the blades rotate causing the shaft to rotate with the blades;
- the system further comprising a generator including at least
- a stator having a stationary magnet that generates a magnetic field a rotator coupled to the shaft, the rotator includes at least coils of electrical wire, as the shaft rotates, the rotator rotates, which generates an electric current in the coils;
- and
- a speed sensor for sensing the speed at which blades of the turbine rotate, signals from the speed indicating a speed at which the turbine rotates;
- and
- a switch communicatively coupled to the load for electrically connecting and disconnecting the load to the generator, based on the signals from the speed sensor, which are received by the switch, the switch causing
- the load to be electrically connected to the generator when the turbine spins at a speed above a first threshold speed, and
- the load to be electrically disconnected from the generator when the turbine spins at a speed below a second threshold speed that is lower than the first threshold speed.
11 more elements
A method comprising:
- allowing a fluid to turn a turbine;
- periodically engaging and disengaging a load from the turbine at intervals of time;
- the time intervals being dependent on a fluid speed of the fluid, such that for a constant fluid speed the time intervals are equal to one another.
Dependencies are inferred from the claim text.