The present invention relates to a Wave Energy Converter (WEC) Power take-off (PTO) designed to utilize both software and hardware to extract greater amounts of electrical energy from ocean waves than can be achieved through existing means. For example, a controller that is designed to sense the dominant frequency component of a sea state and command a desired damping value for the generator does not have the capability to command the generator to optimally extract power from any frequency components other than the detected dominant frequency.
- By use fluctuation importantly have higher efficient
- Meditación basada en el cuerpo (escáner corporal)
- By enhancing vehicle or fleet reliability through prognosis-based maintenance
- Sobrepeso y obesidad
- Sensación de miedo y nervios
For example, in an embodiment of the invention, device 44 is the control computer. 14, 1997 to Lukas describes a VAWT having a “control plate” that can move with respect to the support structure along grooves for effecting pitch control. In an embodiment of the invention, along with the trailing edge flap 22, component 24 forms the complete airfoil. Electrical component 48 is a grid-tie interface that takes the AC voltage and feeds it to the electrical grid. Drive a 72 is shown driving the a stators in parallel and drive b 74 is shown driving the b stators in parallel schematically in Figure 7 which may be accomplished by mechanical connection or by controlled electrical connection. Device 50 may be any type of computer or processor board with a WIFI connection. Device 50 is the computer of the wind turbine operator that takes data wirelessly from the control computer 44 to monitor the performance to the system.
The grid interface is in block 10. It collects grid data, including voltage, current and frequency, and formats it so that it can be used by the control computer. Most VAWTs proposed in the past have fixed blades-blades that are fixed with respect to a support structure that attaches them to the main rotor. Previously developed VAWTs have low efficiencies, making them less attractive to suburban dwellers. This invention pertains to a vertical axis wind turbine (VAWT), which are attractive for suburban applications. Another example of a passively controlled variable pitch vertical axis wind turbine with pitching motion constrained by stops is described in the U.S. Thus, there is a need for a system that improves the efficiency of power extraction capability of vertical axis wind turbines by integration of pitch, camber and generator control, and that enables efficient power extraction at any wind speed.
Dolor Neuropático Que Es
There is a vast resource of energy within the world’s oceans. A device capable of economically extracting the energy of ocean waves would be capable of providing a significant portion of the world’s energy needs if widely deployed. The present invention relates to the extraction of electrical power from a linear oscillatory mechanical input with multiple frequency components, more specifically for use as a power take-off of an ocean Wave Energy Converter (WEC). WECs have often been equipped with relatively simple controllers, providing a mechanical damping coefficient to maximize power from the dominant wave frequency only.
Dolor Neuropático Central
By contrast, the present implementation has a dual stator permanent magnet linear generator, with stators 52 providing coils on both sides of a central permanent magnet translator 54. Dolor de espalda y piernas cansadas . The translator 54 is formed by a stack of alternating electrical steel laminations 62 and permanent magnets 64 forming the translator modules 55 which are joined by supports 66 which are interconnected to the rod 36. The permanent magnets 64 are oriented with their poles facing the direction of travel 58 rather than facing the face of the stator modules. Periodically, or on user command, block 1 puts the wind turbine into a calibration cycle 5. The master controller 1 can interface with other wind turbines via this interface and coordinate their operation if a user owns multiple wind turbines. The user may interact with the system via block 2, which accepts user commands through the wireless interface 4. This permits the user to use any personal computer to talk to the wind turbine to control the operation of the turbine.
This formats the generator control commands into the data words that the generator control chip accepts. The matrix converter is an array of controlled semiconductor switches that can be used to convert variable frequency input to a variable output voltage with a specified, constant frequency. Together they form a semiconductor bidirectional switch. These may be MOSFETs for low power wind turbines and Integrated Gate Bipolar Transistors (IGBTs) for high power turbines. It will be apparent, however, to one having ordinary skill in the art, that the invention may be practiced without these specific details. An improved version of the Darrieus turbine that incorporated upper and lower contours separated by radial stator vanes was described in U.S.
Darrieus type wind turbine. The Darrieus turbine has characteristic C-shaped blades that are connected at the top and bottom of the vertical axle. Its shape is commonly compared with that of an eggbeater. The generator needs to know its angle to determine switching times. It takes in readings of generator current, angle encoder readings, and wind measurements to generate commands for the blade pitch and camber and for the generator. Endometriosis y dolor de espalda . The linear generator 50 in the disclosed implementation is a direct drive permanent magnet linear generator which receives control commands and adapts to new operating states on a sub-second time scale.
Dolor Muscular Bayer
The electrical generator is controlled by a generator control, and each blade also includes a pitch control for controlling the blade’s pitch, which, in turn, is connected to a pitch control motor. Electrical connector 46 is the interface to the sensors and the actuators for the blades. Many types of sensors can be used, including a simple weathervane with propeller, as well as more sophisticated ultrasonic sensors, without limitation. If the blade is deformable it may be one of any number of piezoelectric or other shape-change inducing actuators, without limitation. Component 74 is the stator and winding 72. Alternative generators may be employed, without limitation.
Component 22 is the trailing edge flap which is used to change the blade camber. The camber of the blades is changed using a motor 14. Motor 14 might simply rotate a flap hinge or might elastically change the shape of the blade to effect a change in camber. The blade is a composite structure with a uniform cross-section with reinforcing fibers. Dolor de rodilla y talon del pie . A description of a self-erecting structure and erecting method is included. DETAILED DESCRIPTION In the following description, for purposes of explanation, specific numbers, materials and configurations are set forth in order to provide a thorough understanding of the invention. Figure 2 is presented to provide a visual understanding of a time series of a typical operating sea state containing multiple frequency components. The proposed invention will provide a means of distributed harvesting of this resource in an economically viable manner. This may be done with device 18, which is the wind velocity and direction sensor.
In order to do this, the wind velocity vector is first determined. It communicates with the digital signal processor (DSP). Signal 52 represents the wireless link. A telemetry collector for collecting operating telemetry and forwarding collected telemetry to a user using a wireless interface is also provided. Block 13 is the interface to the camber drive. Electrical connector 28 is the multi-phase wiring that connects the generator to the drive circuits. The full system is outlined as it would be utilized in the example WEC 10 from Figure 1 in the block diagram of Figure 3. In an exemplary implementation, a direct drive linear electric generator 50 (to be described in greater detail subsequently with respect to Figures 5 and 6) is utilized in the PTO 18, and therefore the power train and generator are consolidated into a single element with no need for a gearbox or transmission. For ease of understanding and simplicity, common numbering of elements is employed where an element is the same in different drawings.
Although every reasonable attempt is made in the accompanying drawings to represent the various elements of the embodiments in relative scale, it is not always possible to do so with the limitations of two-dimensional paper. While the invention has been described with reference to specific implementations, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the true spirit and scope of the invention. If the camber control is a shape control it will send the shape command to the electronics that determines the blade shape. In an embodiment of the invention, electronic unit 42 is the circuit that controls the generator.
Dolores Musculares Generalizados
The clamp circuit provides overcurrent/overvoltage protection. FIG. 9 is a circuit diagram depicting a realization of an input filter of the matrix converter, in accordance with an embodiment of the present invention. FIG. 7 shows details of an exemplary matrix converter assembly. FIG. 2 shows an exemplary installation of the system in a home 54. The mounting support 56 connects the generator base to the house.