Patent application number | Description | Published |
20100090552 | Magnetic Gearbox Arrangement - Magnetic gearboxes comprising an inner rotor and an outer rotor are known with pole members between them. However, these gearbox arrangements generally have a fixed gear ratio between the rotors. By provision of pole members with coils between them and associated switches to adjust the magnetic flux modulation capacity between the rotors it is possible to create open circuit, closed circuit and variable impedance configurations which will relatively passively adjust the magnetic flux modulation capacity or by presenting a voltage to the coils or drawing a voltage from the coils to more actively adjust the magnetic flux modulation capacity across the arrangement. In such circumstances a wider range of gear ratios is achieved as well as the capability with regard to localised electrical power generation through the gearbox arrangement or electro magnetic braking achieved upon the gear box as required. | 04-15-2010 |
20100237715 | MAGNETOPLASMADYNAMIC (MPD) GENERATOR - A magneto-plasma-dynamic (MPD) generator, comprising: a conveying duct shaped for conveying a high velocity, conductive fluid; a magnetic field generator arranged to generate a magnetic field across the conveying duct, substantially perpendicular to the direction of travel of the fluid, such that the fluid passes through the magnetic field ( | 09-23-2010 |
20100237716 | MAGNETO-PLASMA-DYNAMIC GENERATOR AND METHOD OF OPERATING THE GENERATOR - A magnetoplasmadynamic (MPD) generator comprising a conveying duct ( | 09-23-2010 |
20110031810 | ELECTRICAL GENERATOR ARRANGEMENTS - An electrical generator arrangement comprising a distribution network having a first generator and a second generator, the first generator arranged to provide electrical power to a transmitter source, the second generator coupled to the distribution network by a switch to enable isolation of the second generator, the switch associated with an electrical characteristic comparator to compare the phase and/or frequency of the voltage provided by the second generator with the incidental modulation of a transmitter signal from the transmitter due to variations in the phase and/or frequency of the voltage provided by the first generator to the transmitter, the comparator arranged to operate the switch to isolate or connect the second generator to the distribution network dependent upon a variation in the change of the phase and/or frequency of the voltage provided by the second generator and the incidental modulation of the transmitted signal. | 02-10-2011 |
20110121674 | MAGNETIC GEAR ARRANGEMENT - A magnetic gear arrangement, having a first gear member for generating a first magnetic field and a second gear member for generating a second magnetic field. An interpole member is provided between the first and second gear members for coupling the two magnetic fields and controlling the gear ratio between the two gear members. The interpole member includes a unitary body of magnetisable material and associated control wiring, and is arranged such that when current is passed through the wiring, space regions of the unitary body are magnetised by an electrically-induced magnetic field. Discrete interpoles, the number and spacing of which define the gear ratio, are then formed in the unitary body between adjacent magnetised regions. | 05-26-2011 |
20110125339 | PROTECTION ARRANGEMENT FOR AN ELECTRICAL POWER DISTRIBUTION NETWORK - Protection arrangements and methods of operating protection arrangements are important in order to maintain operability with regard to electrical power distribution networks. Such networks generally comprise grids or meshes of electrical distribution pathways from generators and electrical loads. Faults may occur within the network and circuit breakers or other protection elements are utilised to isolate such faults. A number of regimes for protection are known but problems can arise with regard to ensuring an appropriate pan of the distribution network is isolated. By providing circuit breakers which have a time grade margin compared to other circuit breakers which is proportional to an inverse current-time logarithmic relationship between a fault electrical current divided by a major contribution electrical current to the circuit breaker operation can be achieved which is sufficiently quick for high electrical fault currents but incorporates a time delay for low electrical currents which may have a more transient nature. | 05-26-2011 |
20110156518 | MAGNETIC GEAR ARRANGEMENT - A magnetic gear arrangement is provided having a magnetically active gear member that generates a first magnetic field, which is modulated by interpoles. The modulated magnetic field generates magnetic poles on a magnetically passive gear member, and these poles form a second magnetic field. The material of the passive gear member is sufficiently magnetically hard that the first and second magnetic fields interact to couple the motion of the active and passive gear members according to a given gear ratio. | 06-30-2011 |
20120023890 | FLASHBACK PROTECTOR - The present invention relates to a flashback protector ( | 02-02-2012 |
20120023950 | CONTROLLABLE FLAMEHOLDER - The present invention relates to a flameholder ( | 02-02-2012 |
20120023965 | COMBUSTION CONTROLLER - The present invention relates to a combustion controller for controlling the combustion of a flow of combustible and/or combusting fluid. The combustion controller comprises an inlet and an outlet which defines a flow path between them. A magnetic-field generator is arranged to generate a magnetic field across the flow path such that in use the fluid flows in the flow path through the magnetic field. As the fluid flows through the magnetic field an electric current is induced in the fluid. This results in energy being supplied to the fluid. This energy can assist is reignition. If the magnetic field is an alternating magnetic field then this induces an alternating current in the fluid. The frequency of this current can be controlled such that certain chemical reactions are either promoted or inhibited. | 02-02-2012 |
20120067042 | TEMPERATURE ACTIVATABLE ACTUATOR - An actuator is provided having a temperature activatable actuating member comprising an inductively couplable material. The actuator has an electrical heating element for electrically heating the actuating member. The heating element is configured to inductively couple with said material when an AC current is passed through the heating element such that an opposing electromotive force is induced in the heating element. A detector is provided for detecting activation of the actuating member by sensing a change in the AC impedance of the heating element. | 03-22-2012 |
20130085069 | SUPERCONDUCTING SWITCH - This invention is a high voltage superconductor switch comprising: a length of superconductor having a switching portion located within an air gap; a magnetic circuit including at least one flux guide having ferrite pole pieces defining an air gap in which a switching portion of a superconductor can reside in use and at least one primary magnetic flux source located within the circuit so as to provide a quenching magnetic field across the air gap via the ferrite pole pieces. | 04-04-2013 |
20130090243 | SUPERCONDUCTING FAULT CURRENT LIMITER - This invention relates to a superconducting fault current limiter, including: an input segment of an input transformer core and an output segment of an output transformer, each segment having a first end and a second end; a length of superconductor which forms a winding around the input segment and a winding around output segment, wherein the windings are connected in series to form a closed loop; a cryostat in which the superconductor is housed; wherein each end of the input and output segments are exposed to the exterior of the cryostat. | 04-11-2013 |
20140217838 | MAGNETIC GEAR ARRANGEMENT HAVING A VARIABLE GEAR RATIO - A magnetic gear arrangement is provided having a magnetically active gear member that generates a first magnetic field, which is modulated by interpoles. The modulated magnetic field generates magnetic poles on a magnetically passive gear member, and these poles form a second magnetic field. The material of the passive gear member is sufficiently magnetically hard that the first and second magnetic fields interact to couple the motion of the active and passive gear members according to a given gear ratio. | 08-07-2014 |