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21results about "AC/DC convertors" patented technology
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Electrical power system
An electrical power system 10, comprising: a rotary electrical machine 12 configured to output AC; a diode-bridge rectifier 13 having an AC input connected to the electrical machine 12 and a DC output (DC+, DC-); an active filter circuit 14 comprising a plurality of power semiconductor switches 141L-H, 142L-H connected in a bridge configuration between first and second output terminals 14out, the first and second output terminals 14out connected to the DC output (DC+, DC-) of the diode-bridge rectifier 13; and a controller 15 configured to control a switching operation of the plurality of power semiconductor switches 141L-H, 142L-H of the active filter circuit 14 to control an output voltage Vfilt across the first and second output terminals 14out of the active filter circuit 14.
Owner:ROLLS ROYCE PLC
Power conditioning for high-speed machine generator
An exemplary power conditioning method and system are disclosed using a power converter in combination with a diode bridge rectifier and a series transformer in which the power converter is configured to inject VARs to a high-speed rotating machine to compensate for the machine reactance. By injecting VARs into the machine using the power converter through the series transformer, the power converter can be fractionally rated, in terms of power rating, to a lower power rating which would otherwise have to be higher due to the reactance requirements due to its high-frequency input. And additionally, because of the lower power rating, the transformer can be beneficially rated for the corresponding power level of the machine. The operation of the diode bridge rectifier and a transformer does not add to the complexity of the control of the system or that of the power converter.
Owner:GEORGIA TECH RES CORP
Parallel variable speed generator control
A system for controlling load sharing between multiple generators mechanically coupleable to the output shaft of a prime mover is provided. The system may comprise a first processor; and at least two inverters operably connectable to at least two generators, respectively. The generators provide AC power to the respective inverter and each inverter provides DC power to a respective DC link. Each inverter may comprise a processor configured to control a respective generator. The processor may be configured to receive a common speed command from the first processor, adjust the common speed command based on a speed of the same output shaft to create a droop, determine a torque command based on the adjusted speed command and supply the determined torque command to the corresponding generator.
Owner:BAE SYSTEMS CONTROLS INC
Magnetohydrodynamic generator
A generator for providing at least one of electrical power and thermal power.SOLUTION: 1) a molten metal injection system comprising 1) a reactor cell for the catalysis of atomic hydrogen to form hydrinos, 2) a reactant mixture comprising at least two components selected from H2O catalysts or sources of H2O catalysts, atomic hydrogen or sources of atomic hydrogen, H2O catalysts or sources of H2O catalysts, reactants that form atomic hydrogen or sources of atomic hydrogen, and a molten metal that renders the reactant mixture highly conductive, 3) at least one pump, such as an electromagnetic pump, and a reservoir, and 4) supplying low voltage, high current electrical energy to ignite a plasma; An ignition system including a power source to initiate rapid reaction rates and provide energy gain, 5) a source of H2 and O2 to feed the plasma, 6) a molten metal recovery system, and 7) a power converter to (a) convert high power light into electricity or (b) convert energetic plasma into electricity.SELECTED DRAWING: None
Owner:BRILLIANT LIGHT POWER INC
Micro-combined heat and power system and method of use
PCT designated stageWO2026035957A1Waste gas energyCombined heat and power systemsMicrogridPower grid
A grid-independent micro-combined heat and power system supplies heat and electricity to a building or a small number of buildings and can operate completely independently of a central-type electrical power grid. The system includes a variable speed liquid-cooled engine and a liquid-cooled generator that is configured to output an electrical supply of between approximately between 0.5 kW and 40 kW, a coolant loop, and a water circuit. The coolant loop heats a liquid using claimed heat from the genset to heat water that can be utilized as a domestic hot water source for cooking or cleaning or for a hot water source for heating. The speed of the engine may be controlled to control the output of the genset to meet prevailing electrical loads. The system may be part of a microgrid incorporating several such systems that are in electrical communication with one another and that collectively supply electrical power and heat to from a few buildings to about one hundred buildings.
Owner:AXIOM ENERGY GROUP LLC
Power conditioning for high speed mechanical generators
An exemplary method and system for power conditioning using a combined diode bridge rectifier and series transformer power converter is disclosed, where the power converter is configured to inject VARs into a high speed rotating machine to compensate for its mechanical reactance. By using a power converter to inject VARs into the machine via a series transformer, the power converter can be rated slightly lower in terms of power rating than would otherwise be required to be rated higher due to reactance requirements from high frequency inputs. Furthermore, due to the lower power rating, the transformer can be beneficially rated for the corresponding machine power level. The operation of the diode bridge rectifier and transformer does not add any complexity to the system control or power converter control.
Owner:GEORGIA TECH RES CORP
Energy transmission device and an electrical machine with an energy transmission device
ActiveDE102015007586B4Association with control/drive circuitsWindingsRotational axisElectric machine
Owner:AUDI AG
A networked automation system for start-up of a switch mode power supply
PendingEP4445474A4Association with control/drive circuitsElectric motor controlEmbedded systemOperating system
Networked automation systems having electric actuation from a high voltage source. The electric actuator includes a switch mode power supply coupled to the high voltage source as a principal power source. The networked automation systems include a controller device having an output network port wired to an input network port of the motor drive. The controller device is also coupled to an auxiliary source of power. Thus, a regulation circuit of the switch mode power supply can be coupled to the auxiliary source of power, thereby providing power for the regulation circuit at start up.
Owner:KOLLMORGEN CORP
Superconducting flux pump having volt-level direct-current voltage output and excitation experimental system
The present invention relates to a superconducting flux pump having volt-level direct-current voltage output and an excitation system. A three-phase alternating-current core and a direct-current bias core are used to form a magnetically coupled air gap to form a traveling wave magnetic field. The traveling wave magnetic field acts on a superconducting stator to generate a direct-current voltage output. The present invention achieves volt-level direct-current voltage output from superconducting flux pumps, reduces the power supply cost of high-temperature superconducting magnets, and enables rapid charging of superconducting coils and operation in a continuous current mode.
Owner:SICHUAN UNIV
Superconducting flux pump having volt-level direct-current voltage output and excitation experimental system
The present invention relates to a superconducting flux pump having volt-level direct-current voltage output and an excitation system. A three-phase alternating-current core and a direct-current bias core are used to form a magnetically coupled air gap to form a traveling wave magnetic field. The traveling wave magnetic field acts on a superconducting stator to generate a direct-current voltage output. The present invention achieves volt-level direct-current voltage output from superconducting flux pumps, reduces the power supply cost of high-temperature superconducting magnets, and enables rapid charging of superconducting coils and operation in a continuous current mode.
Owner:SICHUAN UNIV
Micro-Combined Heat and Power System and Method of Use
A grid-independent micro-combined heat and power system supplies heat and electricity to a building or a small number of buildings and can operate completely independently of a central-type electrical power grid. The system includes a variable speed liquid-cooled engine and a liquid-cooled generator that is configured to output an electrical supply of between approximately between 0.5 kW and 40 kW, a coolant loop, and a water circuit. The coolant loop heats a liquid using claimed heat from the genset to heat water that can be utilized as a domestic hot water source for cooking or cleaning or for a hot water source for heating. The speed of the engine may be controlled to control the output of the genset to meet prevailing electrical loads. The system may be part of a microgrid incorporating several such systems that are in electrical communication with one another and that collectively supply electrical power and heat to from a few buildings to about one hundred buildings.
Owner:AXIOM ENERGY GROUP LLC
System and method for delivering electric power
PendingUS20250343440A1Batteries circuit arrangementsAC/DC convertorsElectrical conductorControl theory
A system for transferring electric power is provided. A power supply conductor conducts a power supply current that generates a first resultant magnetic field. An electric motor has a power input terminal connected to the power supply conductor and a movable output component. A generator has a movable input component connected to the movable output component such that the movable output component causes movement of the movable input component. The generator converts the movement of the movable input component into a power output current to the power output terminal that generates a second resultant magnetic field. A plurality of field line guides are positioned for field lines of the second resultant magnetic field to couple to the plurality of field line guides and are formed to guide the field lines into a helical shape.
Owner:KIM YOUNG B
Biased molten metal circuits
Systems to induce current flow in a circuit formed by intersecting molten metal streams are provided. The systems involve induction type electromagnetic pumps that produce each molten metal stream. In some embodiments, the current induced through the molten metal streams is induction current.
Owner:BRILLIANT LIGHT POWER INC
Electrical power system
PendingUS20250316978A1Ac-dc conversion without reversalAC/DC convertorsDiode bridge rectifierElectric power system
An electrical power system 10, comprising: a rotary electrical machine 12 configured to output AC; a diode-bridge rectifier 13 having an AC input connected to the electrical machine 12 and a DC output (DC+, DC−); an active filter circuit 14 comprising a plurality of power semiconductor switches 141L-H, 142L-H connected in a bridge configuration between first and second output terminals 14out, the first and second output terminals 14out connected to the DC output (DC+, DC−) of the diode-bridge rectifier 13; and a controller 15 configured to control a switching operation of the plurality of power semiconductor switches 141L-H, 142L-H of the 10 active filter circuit 14 to control an output voltage Vfilt across the first and second output terminals 14out of the active filter circuit 14.
Owner:ROLLS ROYCE PLC
Power converter, program, and control method for power converter
To provide a power conversion device capable of reducing a noise generated at temperature rising control of a battery pack.SOLUTION: A power conversion device 10 comprises: a rotary electric machine 40 that has respective phase coils 41U, 41V, and 41W; an inverter 30 that has series connection bodies of upper and lower arm switches QUH, QVH, QWH, QUL, QVL, and QWL; and a capacitor 31 connected in parallel with the series connection bodies. Further, the power conversion device 10 comprises: a connection path 60 electrically connecting between an intermediate terminal B of a battery pack 20 and a neutral point O; and a control device 70 that performs switching control of the inverter 30 so as to apply a current between a first accumulator battery 21 and a second accumulator battery 22 configuring the battery pack 20 via the inverter 30, the phase coils 41U, 41V, and 41W and the connection path 60.SELECTED DRAWING: Figure 1
Owner:SOKEN CO LTD +1
Hybrid power generation equipment
To provide a hybrid power generation device that generates power stably and safely in accordance with demand without limiting the purpose or place of use. [Solution] The system comprises a power unit that drives a stopped flywheel using a motor or reciprocating engine, an electromagnetic induction unit that has a fixed ring around the flywheel, with multiple permanent magnets arranged circumferentially around it, and multiple electromagnetic induction terminals that generate electromagnetic induction toward the permanent magnets, and that has the function of transmitting a signal to the electromagnetic induction terminals to generate the electromagnetic induction, and a power generation unit that has a generator powered by the rotation of the flywheel.
Owner:OILLESS ENERGY CO LTD +1
Electric compressor
ActiveUS12633796B2Association with control/drive circuitsRotary/oscillating piston combinations for elastic fluidsElectric machineStructural engineering
An electric compressor including a housing, a compression unit disposed within the housing, a motor unit housed within the housing, and an inverter unit coupled to one side of the housing to control the motor unit, wherein the inverter unit includes an inverter body coupled to one side of the housing, an inverter cover attached to a facing side of the inverter body, and a sealing member integrally formed on one side and the other side of the inverter body, wherein the electric compressor forms the sealing member simultaneously with the formation of the inverter body, eliminating the need for workers to install gaskets for sealing, thereby improving assembly between the housing and the inverter unit while maintaining sealing stability.
Owner:HANON SYST CO LTD
Motor-alternator-motor (MAM) systems and methods for using same
Like a transformer that can increase or decrease AC voltage or current by increasing or decreasing the turns-ratio of the transformer an amplification factor is developed. And like a transistor that can amplify / attenuate an electrical signal and by manipulating the hfe of the transistor, it could increase or decrease the amplification factor of the transistor. Likewise, the MAM unit, depending on the number of phases used, can amplify the power for a given output motor by increasing the number of phases of the output AC motor, which substantially reduces the amount of current an AC motor will draw for a specific amount of torque. By increasing the number of phases on an AC synchronous, asynchronous, axial, induction, or reluctance type motor, using alternating current, you can increase the efficiency, which implies an amplification factor of the motor thereby reducing the applied current required for a given amount of torque / speed.
Owner:TORREGANO RICHARD PAUL
Electrical power system
PendingGB2640390AAc-dc conversion without reversalAC/DC convertorsElectric power systemElectric machine
An electrical power system 10, comprises a rotary electrical machine 12 configured to output AC. A diode-bridge rectifier 13 has an AC input connected to the electrical machine and a DC output (DC+, DC-). An active filter circuit 14 comprises a plurality of power semiconductor switches connected in a bridge configuration between first and second output terminals. The first and second output terminals are connected to the DC output (DC+, DC-) of the diode-bridge rectifier. A controller 15 controls a switching operation of the plurality of power semiconductor switches of the active filter circuit to control an output voltage across the first and second output terminals of the active filter circuit. The rotary electrical machine may be configured to output a trapezoidal or quasi-trapezoidal voltage. The electrical power system may comprise a DC electrical network 16 connected to the DC output of the diode-bridge rectifier. An aircraft may comprise the electrical power system.
Owner:ROLLS ROYCE PLC
Superconducting flux pump having volt-level direct-current voltage output and excitation system
The present invention relates to a superconducting flux pump having volt-level direct-current voltage output and an excitation system. A three-phase alternating-current core and a direct-current bias core are used to form a magnetically coupled air gap to form a traveling wave magnetic field. The traveling wave magnetic field acts on a superconducting stator to generate a direct-current voltage output. The present invention achieves volt-level direct-current voltage output from superconducting flux pumps, reduces the power supply cost of high-temperature superconducting magnets, and enables rapid charging of superconducting coils and operation in a continuous current mode.
Owner:SICHUAN UNIV
Superconducting magnetic flux pump and excitation experimental system with volt-class DC voltage output
The objective is to provide a superconducting magnetic flux pump and excitation experimental system having a volt-class DC voltage output. [Solution] The present invention relates to a superconducting flux pump and an excitation experimental system having a volt-class DC voltage output, belonging to the technical field of superconducting flux pumps. The superconducting flux pump uses a three-phase AC core and a DC bias core to form a magnetic coupling gap. When a three-phase AC current is supplied to the three-phase AC winding, magnetic flux is guided through the core, generating a traveling wave magnetic field in the magnetic coupling gap. The magnetic field generated by the DC bias winding is also guided through the core, generating a DC bias magnetic field in the magnetic coupling gap. The traveling wave magnetic field and the DC bias magnetic field are superimposed to generate a biased traveling wave magnetic field in the magnetic coupling gap, which acts on the superconducting stator in the magnetic coupling gap, thereby generating a DC voltage output. The present invention makes it possible to achieve a volt-class DC voltage output with a superconducting flux pump, significantly reducing the power supply cost of high-temperature superconducting magnets, contributing to a reduction in the burden on the cooling system, and enabling rapid charging of the superconducting coil and operation in persistent current mode.
Owner:SICHUAN UNIV