13072 results about "Wind speed" patented technology

The invention includes a method, apparatus, and computer program to selectively suppress wind noise while preserving narrow-band signals in acoustic data. Sound from one or several microphones is digitized into binary data. A time-frequency transform is applied to the data to produce a series of spectra. The spectra are analyzed to detect the presence of wind noise and narrow band signals. Wind noise is selectively suppressed while preserving the narrow band signals. The narrow band signal is interpolated through the times and frequencies when it is masked by the wind noise. A time series is then synthesized from the signal spectral estimate that can be listened to. This invention overcomes prior art limitations that require more than one microphone and an independent measurement of wind speed. Its application results in good-quality speech from data severely degraded by wind noise.

A technique is provided for operating a wind farm at increased rated power output. The technique includes sensing a plurality of operating parameters of the wind turbine generator, assessing the plurality of operating parameters with respect to respective design ratings for the operating parameters, and intermittently increasing a rated power output of the wind turbine generator based upon the assessment.

A method, system and computer program product enhance the commercial value of electrical power produced from a wind turbine production facility. Features include the use of a premier power conversion device that provides an alternative source of power for supplementing an output power of the wind turbine generation facility when lull periods for wind speed appear. The invention includes a communications infrastructure and coordination mechanism for establishing a relationship with another power production facility such that when excess electrical power is produced by the wind turbine facility, the excess may be provided to the power grid while the other energy production facility cuts back on its output production by a corresponding amount. A tracking mechanism keeps track of the amount of potential energy that was not expended at the other facility and places this amount in a virtual energy storage account, for the benefit of the wind turbine facility. When, the wind turbine power production facility experiences a shortfall in its power production output it may make a request to the other source of electric power, and request that an increase its power output on behalf of the wind turbine facility. This substitution of one power production facility for another is referred to herein as a virtual energy storage mechanism. Furthermore, another feature of the present invention is the use of a renewal power exchange mechanism that creates a market for trading renewable units of power, which have been converted into “premier power” and / or “guaranteed” by secondary sources of power source to provide a reliable source of power to the power grid as required by contract.

A floating wind turbine platform includes a floatation frame (105) that includes three columns (102, 103) that are coupled to each other with horizontal main beams (115). A wind turbine tower (111) is mounted above a tower support column (102) to simplify the system construction and improve the structural strength. The turbine blades (101) are coupled to a nacelle (125) that rotates on top of the tower (111). The turbine's gearbox generator and other electrical gear can be mounted either traditionally in the nacelle, or lower in the tower (111) or in the top of the tower-supporting column (102). The floatation frame (105) includes a water ballasting system that pumps water between the columns (102, 103) to keep the tower (111) in a 10 vertical alignment regardless of the wind speed. Water-entrapment plates (107) are mounted to the bottoms of the columns (102, 103) to minimize the rotational movement of the floatation frame (105) due to waves.

The invention relates to a wind energy system with hydraulic energy transmission with non-symmetric actuation. The non-symmetric actuation is caused by valve control and mechanical means for controlling the actuation of the pistons. A cylinder unit is provided comprising a drive unit and an output unit associated with two hydraulic connections. The drive and the output unit comprise a minimum of two cylinders, in which pistons are reciprocating. Some of the cylinders can be switched off during low wind speeds. The cylinders communicate with a low pressure manifold and a high pressure manifold. These manifolds are part of the hydraulic connections. Use of the fluid-working machine as transmission in wind energy systems increases the overall economical efficiency.

A crosswind kite system adapted to operate in an alternate mode in high winds. The system may operate at reduced efficiency in high winds in order to moderate loading on the system during those high winds. The system may use multi-element airfoils which are actuated to reduce the coefficient of lift of the airfoils in order to moderate loading in high wind conditions. Other flight aspects may be controlled, including flying the crosswind kite in side slip to induce drag which may lower loading on the system.

Multi functional sensors are described. A silicon based sensor utilizes metal layers arranged as resistors around a central pair if resistors separated by a humidity sensitive polymer with one of the central resistors being a heater. This enables temperature humidity wind speed and direction to be measured. In another embodiment an array of resistors is printed onto a flexible substrate to form the basis of an array of sensors. A soil moisture sensor, which is also useful as a leaf wetness sensor, incorporates a novel self calibrating capacitive sensor structure. The flexible substrate is rolled into a stake that can be inserted in the soil so that below ground sensors measure soil moisture and above ground sensors measure temperature, light, humidity, wind speed and direction.

Mobile communication devices are interfaced with sports equipment that include at least one embedded sensor. The sensor may be a variety of different sensors, including, but not limited to: 3D acceleration sensors, pressure sensors, temperature sensors; humidity sensors; wind speed sensors; pressure sensors; and the like. Data that relates to the sensor measurements are transmitted wirelessly from the sports equipment to another device that may analyze the data. This device may be a mobile device, such as a mobile phone, or a wired device, such as a desktop computer. The data may be transmitted through one or more networks.

A windmill includes a freely rotatable revolution shaft, a plurality of pairs of pivotal support rods provided at the revolution shaft, and wind receiving blades respectively and rotatably set between the pivotal support rods with wind receiving blade shafts. The windmill is applied to the driving of a lifting pump, a generator and the like by employing revolution driving force. An anemometer / anemoscope measures wind velocity and direction. A servo motor controls the direction of the wind receiving blades based on the detected velocity and direction. Various methods of control are also provided.

Disclosed is a wind turbine generator, which effectively uses wind velocity while generating a minimum of noise. Two blade assemblies, which are subjected to natural wind velocity to rotate for driving a power generator, are coaxially mounted one behind the other. When the front end and rear blade assemblies in this configuration both catch a wind to rotate, the rear blade assembly rotates as it catches not only the wind that comes from the front and is rectified by the front blade assembly, but also a wind that is generated by the front blade assembly, which is rotating. This enables the rear blade assembly to rotate with high efficiency and continuously rotate even when the wind velocity is low.

A system for monitoring parameters associated with a device, such as current, voltage, power, temperature, energy consumed, moisture, fluid levels and flow, wind speed, identification parameters, and repair history. The system includes the use of hybrid RFID sensor tags including a combination of active, semi-passive, and passive RFID circuits. Hybrid tags are attached to electrical system components. Standalone electrical components and generators and those connected to the electrical grid may be monitored. Data collected and stored in the hybrid tags may be accessed via a wireless communication link between hybrid tags and either active scanners or a passive interrogators. The data collected and processed from the hybrid tags may be provided to a user via the Internet or another wired or wireless communication network.

A system and method for changing wind turbine rotor diameters to meet changing wind speeds and control system loads is disclosed. The rotor blades on the wind turbine are able to adjust length by extensions nested within or containing the base blade. The blades can have more than one extension in a variety of configurations. A cable winching system, a hydraulic system, a pneumatic system, inflatable or elastic extensions, and a spring-loaded jack knife deployment are some of the methods of adjustment. The extension is also protected from lightning by a grounding system.

An aerodynamic-hybrid, vertical-axis wind turbine which includes a rotor airfoil and stator blade combination which maximizes energy production by increasing wind velocity and pressure while eliminating back pressure and improving the laminar flow of wind both around and through the device. The rotor airfoils have a horizontal cross-section with a crescent shape including a convex leading side and a concave trailing side with a thicker middle section that tapers to narrower sections at ends. The stator blades have a horizontal cross-section with a planar side and a convex side. Rotor airfoil and stator blade combinations are secured between upper and lower annular sails.

A method for limiting loads in a wind turbine by using measured loads or wind speed to increase the minimum pitch angle for extended periods. The minimum pitch angle will be allowed to relax down to the default when load excursions diminish. The method will allow turbines to capture more energy by operating in higher wind speeds and / or utilizing larger rotors without additional loss of fatigue life.

An aerodynamic-hybrid, vertical-axis wind turbine which includes a rotor airfoil and stator blade combination which maximizes energy production by increasing wind velocity and pressure while eliminating back pressure and improving the laminar flow of wind both around and through the device. The rotor airfoils have a horizontal cross-section with a crescent shape including a convex leading side and a concave trailing side with a thicker middle section that tapers to narrower sections at ends. The stator blades have a horizontal cross-section with a planar side and a convex side. Rotor airfoil and stator blade combinations are secured between upper and lower annular sails.

A structure of an upwind type wind turbine and the operating method thereof capable of preventing the occurrence of damage of the blades by evading excessive irregular loads from acting on the blades in the slanting direction in the event of power failure when strong wind blows, are provided.In the upwind type wind turbine having a nacelle supported for rotation on a support, the nacelle is rotated to a downwind position by rotating it by 180° from a normal upwind position and kept in stand-by condition at a downwind position when detected wind speed is higher than the predetermined cutout wind speed, which is the reference wind speed for shifting to an idle operation state. When the detected wind speed is higher than the DWSS wind speed determined based on the maximum permissible instantaneous wind speed, the nacelle is rotated from an upwind position to a downwind position and the yaw brake is released.

When a wind velocity sensor detects a wind velocity higher than a predetermined level, a timer device starts a waiting timer function during an operation timer period shorter than the waiting timer period. After the waiting timer period is over, the waiting timer function is switched to an operation timer function, and a switching relay switches a generator to a motor only during an operation timer period. Then, a driving circuit performs a start assisting rotation. After the operation timer period is over, the waiting timer period re-starts. This process is repeated. When during this period, the number of rotations of a rotor monitored by a rotation number measuring device, based on the output voltage Vm of a three-phase conduction coil exceeds a predetermined number of rotations, the charging of a battery by a three-phase generator is started.

An electronic device is built including a memory, a processor, and a display. The processor is configured to calculate an array of estimated travel time data from a first location to a plurality of locations within a destination area from a set of situational parameters and a set of user parameters. These situational parameters may include data such as: the location, condition, and speed limits of roads and paths; the availability of public transportation; terrain information such as elevation, slope, the presence of trails and vegetation; and weather information such as wind speed and precipitation. User parameters may include data such as: the user's mode of transportation, the user's physical abilities, and the load the user is carrying.

The invention provides a refrigeration method of a low temperature environment air conditioner. When the air conditioner operates to refrigerate, the refrigeration method comprises the following steps of: step 1, reducing the topmost operating frequency of an outer door machine compressor in the air conditioner; step 2, adjusting the operating frequency of the compressor according to the temperature of a coil of an indoor machine evaporator in the air conditioner; and step 3, increasing the rotation speed of an inner fan of an indoor machine, and reducing the rotation speed of an outer door of an outdoor machine. The topmost operating frequency of the compressor is reduced, the compressor is frequently lifted frequency because of high frequency under the low temperature environment to be avoided, the frequency of the compressor is adjusted according to the temperature of the coil, and an evaporator is iced so that the compressor is stopped to be avoided; and the wind speed of the inner fan is increased, the evaporator and indoor heat transfer quantity is improved, the wind speed of the outer fan is reduced, the heat transfer quantity of a condenser is reduced, the air conditioner can normally refrigerate under the low temperature environment to be realized, and the refrigerating effect is optimized.

The invention relates to a method of coordinating and stabilizing the delivery of wind generated power, such as to a power grid, so as to avoid sudden surges and spikes, despite wind speed fluctuations and oscillations. The method preferably uses a plurality of windmill stations, including a number of immediate use stations, energy storage stations, and hybrid stations, wherein energy can be used directly by the power grid, and stored for later use when demand is high or wind availability is low. The method contemplates forming an energy delivery schedule, to coordinate the use of direct energy and energy from storage, based on daily wind speed forecasts, which help to predict the resulting wind power availability levels for the upcoming day. The schedule preferably sets a reduced number of constant power output periods during the day, during which time energy delivery levels remain substantially constant, despite fluctuations and oscillations in wind speed and wind power availability levels.

The invention discloses an indoor unit of an air conditioner and a control method of the indoor unit of the air conditioner. The indoor unit of the air conditioner comprises a hosing, a first air deflector, a second air deflector and a third air deflector, wherein the housing is provided with a wind outlet; the first air deflector is rotatably arranged on the housing for opening or closing the wind outlet; the second air deflector is rotatably arranged on the housing and is located inside the first air deflector; a plurality of first wind dispersing holes penetrating through the second air deflector in the thickness direction are formed in the second air deflector; the third air deflector is rotatably arranged on the housing and is located inside the first air deflector; the third air deflector is located below the second air deflector; the upper end of the third air deflector is suitable for being matched with the lower end of the air deflector to close the wind outlet; a plurality of second wind dispersing holes penetrating through the third air deflector in the thickness direction are formed in the third air deflector. According to the indoor unit of the air conditioner provided by the invention, the wind speed at the wind outlet of the indoor unit of the air conditioner can be quickly reduced, so that no wind feel wind supply is realized.

A wind turbine generator system can regulate the rotational velocity of the wind turbine within an operation range even when the wind velocity suddenly changes and can perform continuous operation of the wind turbine. The wind turbine generator system includes a generator connected to the shaft of the wind turbine and a converter connected to the generator. When the rotational velocity of the wind turbine is within a predetermined range, power outputted from the generator is controlled so as to follow the instruction concerning the generator output given from the wind turbine to the converter. When the rotational velocity of the wind turbine is out of the predetermined range, the power outputted from the generator is controlled without following the instruction concerning generator output given from the wind turbine to the converter.

The invention discloses an intelligent household air-conditioning system with a linkage function. The system comprises a range finding apparatus used for detecting signal intensity information of terminal equipment carried by a user and selecting whether sending a first air-conditioning linkage command to an intelligent household server or not according to the signal intensity information, the intelligent household server used for sending a door and window closing command to an electric door and window apparatus according to the first air-conditioning linkage command and sending an air-conditioning starting command to an air-conditioning apparatus further according to the first air-conditioning linkage command, the electric door and window apparatus used for executing a closing operation of a door and a window according to the door and window closing command, and the air-conditioning apparatus used for starting an air-conditioner according to the air-conditioning starting command. According to the invention, when a user gets home, the air-conditioning system can automatically start the air-conditioner in advance and close the door and the window simultaneously, temperature, humidity, wind speed and the like in a room can be automatically adjusted, and the air-conditioner can be automatically shut down after leaving of the user.

The invention discloses a control method for improving the comfort of an air conditioner, which is characterized in that the indoor ambient temperature detected at certain time is T1 during the operation of the air conditioner, the actual temperature of an indoor unit evaporator is T2, and the target temperature of the indoor unit evaporator operated by the air conditioner is T (T is equal to T1-t); and before the indoor ambient temperature T1 reaches the indoor ambient target temperature set by a user (indoor refrigerating and cooling stage): when the T2 is more than the T, the operation frequency of a compressor is improved, or the wind velocity of an indoor unit is reduced, or the operation frequency of the compressor is improved and the wind velocity of the indoor unit is reduced; when the T2 is equal to the T, the operation frequency of the compressor is unchanged, and the operation speed of a fan is unchanged; when the T2 is less than the T, the operation frequency of the compressor is reduced or / and the wind velocity of the indoor unit is improved; and the target of the steps is to control the T2 and the T to have a same value. The invention aims at different crowd needs to set different operation control methods, allows users to set operation modes needed by the users according to self feelings or needs, and has the characteristics of health, energy conservation, wide application range and the like.

The invention discloses a simulation experimental system for controlling a mine tunnel dust environment, which comprises a simulation tunnel, a ventilation system, a dust generating system, a temperature and humidity controlling system, a water supplying and draining system, a dust removing system, a signal detecting system, and a computer controlling and data analyzing system, wherein the simulation tunnel is connected with the ventilation system, the dust generating system and the temperature and humidity controlling system in the tunnel to simulate the temperature, humidity, wind speed, air pressure and dust concentration parameters in the mine, and is connected with the water supplying and draining system and the dust removing system to spray and remove dust passing through the tunnel. The signal detecting system provides related data information for the computer controlling and data analyzing system. The simulation experimental system is similar to a DC-blowing-type wind channel in a small-scale mine environment. An area in which air flows uniformly is created in the tunnel. By using the demarcated flow field, various scientific research activities related to mine dust detection, dust prevention, and the like can be performed.

In certain example embodiments of this invention, there is provided a grille for a vehicle (e.g., a car, truck, SUV, or the like). In certain example embodiments, the vehicle grille includes adjustable louvers. In certain example embodiments, the louvers are configured to change position relative to the grille (e.g., to rotate, slide, or otherwise move) when a predetermined condition is met (e.g., vehicle speed above / below a predefined threshold, wind speed above / below a predefined threshold, etc.). This configuration advantageously may result in better vehicle performance (such as, for example, better fuel efficiency), e.g., related to less drag and / or improved aerodynamics.

A floating wind turbine platform includes a floatation frame that includes at least three columns that are coupled to each other with horizontal main beams. A wind turbine tower is mounted above a tower support column to simplify the system construction and improve the structural strength. The turbine blades are coupled to a nacelle that rotates on top of the tower. The turbine's gearbox generator and other electrical gear can be mounted either traditionally in the nacelle, or lower in the tower or in the top of the tower-supporting column. The floatation frame includes a water ballasting system that pumps water between the columns to keep the tower in a vertical alignment regardless of the wind speed. Water-entrapment plates are mounted to the bottoms of the columns to minimize the rotational movement of the floatation frame due to waves.

The invention discloses a control method of a multiple connected air conditioning system. The control method comprises the following steps of: calculating a target temperature by using a fuzzy control algorithm according to operating parameters of an air conditioning system; converting an actual pressure measured by a pressure sensor into a saturated refrigerant temperature as an actual temperature and calculating a difference value of the actual temperature and the target temperature; and calculating and adjusting capacity output of a compressor, wind speed of an outdoor fan and openings of indoor and outdoor electronic expansion valves by using a proportion integration differentiation algorithm according to the difference value of the actual temperature and the target temperature, a change rate of the actual pressure and a change rate of the actual temperature and the target temperature so that the actual temperature and the target temperature are consistent. The invention also discloses the multiple connected air conditioning system. The air conditioning system has little wave property, stability, favorable refrigeration and heating effects and favorable energy saving effect.

A method for controlling a rotational speed of a rotor having at least one rotor blade, a rotor shaft, and an electrical generator coupled thereto. The method includes controlling a torque of the rotor shaft by controlling a torque of the electrical generator, alternating between changing an angle of pitch of the at least one rotor blade and maintaining the angle of pitch of the at least one rotor blade substantially constant, and maintaining a substantially constant rotational speed of the rotor during variable wind speeds above a predetermined rated wind speed.