Patent application number | Description | Published |
20080309188 | Electrical output generating devices and driven electrical devices with reduced flux leakage using permanent magnet components, and methods of making and using the same - A device for generating electrical or mechanical output, comprising a stator coil, a stator assembly, a rotor coil, a rotor assembly rotational about an axis, the rotor assembly at least partially surrounding the rotor coil, rotator extensions capable of induced magnetization and extending from the rotator, each rotator extension having a rotor extension surface, wherein magnetic flux leakage between the rotator extension surfaces is prevented or reduced via permanent magnet elements located at the rotator extension surfaces. Stator and rotor may be reversed in operation. | 12-18-2008 |
20090021022 | STALL CONTROLLER AND TRIGGERING CONDITION CONTROL FEATURES FOR A WIND TURBINE - Control features for a wind turbine that control the turbine over a range of wind speeds and under triggering conditions with reduced noise, cost, and reliability issues associated with other such controls. Control is accomplished via control electronics, which adjust the torque produced by the electrical output generation device (e.g., alternator) within the wind turbine. During normal operation, torque is adjusted for optimum aerodynamic performance and maximum output of power. In winds above rated power, the control circuit regulates torque to lower aerodynamic performance, as necessary to maintain desired power level output. In triggering conditions, such as during simultaneous control circuit failure and loss of some portion of the electrical output generation device in extreme winds, wind turbine control is accomplished by increasing torque (e.g., via a separate controller) from the electrical output generation device via shorting of windings, so as to cause retardation of blade rotation. | 01-22-2009 |
20090160288 | Electrical output generating devices and driven electrical devices using electromagnetic rotors, and methods of making and using the same - A device for generating electrical or mechanical output, comprising a rotor coil, a rotor assembly with an axis, and having rotator extensions, a stator coil, and a stator assembly, the stator assembly having two sets of stator flux conductor extensions, the rotator end of the stator flux conductor extension having a stator conductor surface and the interior ends of the first set of stator flux conductor extensions abutting the interior ends of the second stator flux conductor extensions at an abutting junction, wherein rotating the rotor assembly about the axis alternates the rotor assembly between a first and second position in which each of the rotor extension surfaces alternately face the stator conductor surfaces of the first and second set of stator flux conductor extensions. The first and second positions of the rotor assembly lead to the conduction of magnetic flux in the device in opposite paths in the stator assembly generating an output in an output coil. Alternatively, flux conductive extensions can be mounted onto the rotor and an electromagnet or a permanent magnet onto the stator portion. A number of other variations are also shown, including configurations that reduce flux loss between the components. These other variations include a device with a disk-shaped rotor. | 06-25-2009 |
20090206693 | Electrical output generating devices and driven electrical devices having tape wound core laminate rotor or stator elements, and methods of making and use thereof - Electrical output generating devices and driven electrical devices having tape wound core laminate rotor or stator elements. The tape wound core portions enhance magnetic flux and may be shaped and cut to receive magnet and/or flux conducting portions in corresponding stator or rotor portions of devices. The devices can include cooling features integral with the stator and/or rotor portions and superconducting elements. The tape wound core portions can be contained in housings and/or be impregnated with adhesive or other bonding so as to maintain shape and to protect the tape wound core portions during operation of the device. In some variations, the housings can include features for simplifying the adhesive/bonding process. | 08-20-2009 |
20090206696 | Electrical output generating and driven devices using disk and non-disk shaped rotors, and methods of making and using the same - Various devices for generating electrical or mechanical output, comprising a coil, a rotor assembly rotatable about an axis, the rotor comprising alternating magnet portion and flux conducting portions, each of the magnet portions having a first end with a first polarity and a second end with the opposite polarity and oriented along the periphery such that the first end of each magnet portion points toward the first end of the previous magnet portion and the second end of each magnet portion points toward the second end of the next magnet portion, a stator assembly having first and second sets of stator flux conductor extensions, each of the stator flux conductor extensions having a stator surface facing the rotor, wherein rotating the rotor assembly about the axis alternates the rotor assembly between a first and a second position, causing magnetic flux to flow. The stator and the rotor may be reversed in operation. Other variations are presented, including multiple geometries for both the permenant magnets and the flux conductive portions of the invention. A means of coupling the invention to an exterior device or apparatus is also discussed, as are ways to control the output of the device. | 08-20-2009 |
20100007145 | STALL CONTROLLER AND TRIGGERING CONDITION CONTROL FEATURES FOR A WIND TURBINE - Control features for a wind turbine that control the turbine over a range of wind speeds and under triggering conditions with reduced noise, cost, and reliability issues associated with other such controls. Control is accomplished via control electronics, which adjust the torque produced by the electrical output generation device (e.g., alternator) within the wind turbine. During normal operation, torque is adjusted for optimum aerodynamic performance and maximum output of power. In winds above rated power, the control circuit regulates torque to lower aerodynamic performance, as necessary to maintain desired power level output. In triggering conditions, such as during simultaneous control circuit failure and loss of some portion of the electrical output generation device in extreme winds, wind turbine control is accomplished by increasing torque (e.g., via a separate controller) from the electrical output generation device via shorting of windings, so as to cause retardation of blade rotation. | 01-14-2010 |
20100166567 | WIND TURBINE AND METHOD OF MANUFACTURE - A variable voltage and frequency output wind turbine. Variations of the wind turbine include use of a slotless alternator to reduce alternator noise, a high power AC output to facilitate transmission of the output over extended distances, AC to DC converters and DC to AC converters, and sensors for systems and devices to receive the wind turbine output and to allow matching of the output to the receiving devices and system. Other features include a removable hatchcover for dissipating heat from components contained in the turbine or attached to the hatchcover, a swept blade design to reduce blade-produced noise, and power storage components for storing and intermittently using energy stored as a result of wind turbine power generation. | 07-01-2010 |
20100295410 | ELECTRICAL DEVICES USING ELECTROMAGNETIC ROTORS - An electrical machine comprises a rotor assembly comprising a first set and a second set of rotor extensions, and a stator assembly comprising a first set and a second set of stator extensions. Rotating the rotor assembly about an axis alternates the rotor assembly between a first position and a second position. In the first position, each of the first set of rotor extensions transfers flux to one of the first set of stator extensions, and each of the second set of rotor extensions transfers flux to one of the second set of stator extensions. In the second position, each of the first set of rotor extensions transfers flux to one of the second set of stator extensions, and each of the second set of rotor extensions transfers flux to one of the first set of stator extensions. The electrical machine is at least one of a transverse flux machine or a commutated flux machine. | 11-25-2010 |
20110221298 | ELECTRICAL DEVICES HAVING TAPE WOUND CORE LAMINATE ROTOR OR STATOR ELEMENTS - Electrical output generating devices and driven electrical devices having tape wound core laminate rotor or stator elements. The tape wound core portions enhance magnetic flux and may be shaped and cut to receive magnet and/or flux conducting portions in corresponding stator or rotor portions of devices. The devices can include cooling features integral with the stator and/or rotor portions and superconducting elements. The tape wound core portions can be contained in housings and/or be impregnated with adhesive or other bonding so as to maintain shape and to protect the tape wound core portions during operation of the device. In some variations, the housings can include features for simplifying the adhesive/bonding process. | 09-15-2011 |
20120326452 | Stall Controller And Triggering Condition Control Features For A Wind Turbine - Control features for a wind turbine that control the turbine over a range of wind speeds and under triggering conditions with reduced noise, cost, and reliability issues associated with other such controls. Control is accomplished via control electronics, which adjust the torque produced by the electrical output generation device (e.g., alternator) within the wind turbine. During normal operation, torque is adjusted for optimum aerodynamic performance and maximum output of power. In winds above rated power, the control circuit regulates torque to lower aerodynamic performance, as necessary to maintain desired power level output. In triggering conditions, such as during simultaneous control circuit failure and loss of some portion of the electrical output generation device in extreme winds, wind turbine control is accomplished by increasing torque (e.g., via a separate controller) from the electrical output generation device via shorting of windings, so as to cause retardation of blade rotation. | 12-27-2012 |
20140145441 | Stall Controller And Triggering Condition Control Features For A Wind Turbine - Control features for a wind turbine that control the turbine over a range of wind speeds and under triggering conditions with reduced noise, cost, and reliability issues associated with other such controls. Control is accomplished via control electronics, which adjust the torque produced by the electrical output generation device (e.g., alternator) within the wind turbine. During normal operation, torque is adjusted for optimum aerodynamic performance and maximum output of power. In winds above rated power, the control circuit regulates torque to lower aerodynamic performance, as necessary to maintain desired power level output. In triggering conditions, such as during simultaneous control circuit failure and loss of some portion of the electrical output generation device in extreme winds, wind turbine control is accomplished by increasing torque (e.g., via a separate controller) from the electrical output generation device via shorting of windings, so as to cause retardation of blade rotation. | 05-29-2014 |