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39results about "AC/DC convertors" patented technology
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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
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
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
Charging system and method using motor drive system
To provide a charging system and method using a motor drive system for charging a vehicle battery.SOLUTION: A charging system using a motor drive system includes: an inverter 120 that includes switching elements Q11 to Q16 connected between DC connecting ends 121p, 121n and AC connecting ends (motor connection ends 121a - 121c) and adjusts the on / off state of a switching element to perform power conversion between the DC connecting ends and the AC connecting ends; a motor 130 including a plurality of coils connected to the AC connecting ends; first relays R11, R12 one end of each of which is connected to the DC connecting ends and the other end of each of which is connected to a charging power input terminal, and a second relay R13 one end of which is connected to a neutral point of the motor and the other end of which is connected to the charging power input terminal; and a controller 150 that, based on a result of comparing a voltage detection value of a battery 110 with a maximum value of a charging voltage provided for the charging power input terminal by charging equipment, controls states of the first relays and second relay to provide the battery with charging power from the charging equipment.SELECTED DRAWING: Figure 1
Owner:HYUNDAI MOTOR CO LTD +1
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
Planar drive system
ActiveUS12289022B2Torque ripple controlAssociation with control/drive circuitsRotor magnetsElectrical conductor
A planar drive system comprises a stator and a rotor. The stator comprises a plurality of energizable stator conductors. The rotor comprises a magnet device having at least one rotor magnet. A magnetic interaction can be produced between energized stator conductors of the stator and the magnet device in order to drive the rotor. The stator is configured to carry out energization of the stator conductors so that an alternating magnetic field can be generated via the energized stator conductors. The rotor comprises at least one rotor coil in which an alternating voltage can be induced due to the alternating magnetic field. The planar drive system is configured to transmit data from the rotor to the stator, and the rotor is configured to temporarily load the at least one rotor coil to temporarily cause increased current consumption of the energized stator conductors of the stator.
Owner:BECKHOFF AUTOMATION GMBH
Turbine engine power generation
The present invention relates to power generation in a turbine engine. A generator within the engine includes: a permanent magnet that emits a first magnetic field and is disposed on a first shaft; a first winding connected to a second shaft such that the first winding is positioned within the first magnetic field; a field winding disposed on the second shaft such that the field winding generates a second magnetic field that rotates as the first shaft rotates relative to the second shaft; a second winding disposed on the first shaft and positioned to receive the second magnetic field when the first shaft rotates relative to the second shaft and provide an electrical power input to a resonant transmitter to generate a third magnetic field; and a resonant receiver disposed on a housing of the engine and positioned to receive the third magnetic field and convert it into an electrical output.
Owner:THE BOEING CO
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
Integrated powertrain system with motortransformer acting as a motor or an isolation transformer
MotorTransformer device functioning as a Motor or an Isolation Transformer, and Integrated Powertrain System (IPS) for Electric Vehicle (EV). IPS includes a Matrix Converter to bidirectionally convert grid low frequencies (50 / 60 Hz) into MotorTransformer high frequency (several kHz), enabling MotorTransformer operation at the same frequency and power, in both functionalities, utilizing the same conducting and magnetic materials. IPS operates in two modes: Driving and Vehicle to Grid (V2G). Driving mode: IPS propels the EV with regenerative braking, with the MotorTransformer field coils connected like a poly-phase Motor with rotating magnetic field. V2G mode: ISP fast charges and discharges the EV Battery directly from / to the grid. The MotorTransformer, as a poly-phase Isolation Transformer, comprises primary and secondary windings formed by field coil sets electrically isolated, and coupled with an alternating magnetic field. Controlling a variable reluctance rotor position enables maximum peak power tracking, in both functionalities, with low harmonic distortion.
Owner:GIUBBOLINI LUIGI
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
Power conversion device, program, and method of controlling power conversion device
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
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
Hybrid electric aircraft propulsion system and method
PendingUS20250293627A1Electric signal transmission systemsCommutation monitoringElectric aircraftElectric machine
There is provided a hybrid electric aircraft propulsion system and method for operating same. The method comprises providing, to a first electric motor and a second electric motor, alternating current (AC) electric power from a generator, the generator receiving rotational power from a thermal engine, providing, to the first electric motor and the second electric motor, AC electric power from at least one motor inverter, the at least one motor inverter configured to convert DC electric power from a DC power source into AC electric power, and selectively driving the first and second electric motors from the generator, the at least one motor inverter, or a combination thereof, wherein the first electric motor drives a first rotating propulsor and the second electric motor drives a second rotating propulsor.
Owner:PRATT & WHITNEY CANADA CORP
A high-voltage direct current (HVDC) generation system
PCT designated stage expiredWO2025120442A1AC/DC convertorsTwo-wire dc circuitsDC - Direct currentAlternating current
A high-voltage direct current (HVDC) generation system (100) comprises a prime mover (102), an AC generator (exciter) (104) with two separate windings producing sine and cosine wave AC voltages with a 90-degree phase shift, and two unidirectional voltage generators (UVG1 and UVG2) (106,108) mounted on a common shaft. The synchronization of UVG1 and UVG2 by the prime mover ensures the conversion of AC voltages into unidirectional voltages. The combination of these outputs, guided by the mathematical identity Sin2(θ) + Cos2(θ) = 1, results in a constant DC voltage output. This innovative approach eliminates the need for commutation techniques and offers scalability for generating DC voltages exceeding 500kV. The system to promotes synchronization, reduces waveform distortions, and includes ripple reduction mechanisms for enhanced DC voltage quality. Overall, the disclosed invention presents a comprehensive and streamlined solution for efficient HVDC generation.
Owner:VEERABHADRA ELITE ELECTRODYNAMIC SOLUTIONS LLP
System and method for delivering electric power
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
Power conversion apparatus
A power conversion apparatus includes: a rotating electric machine that has a winding; an inverter that has a series-connection body of an upper arm switch and a lower arm switch; and a capacitor that is connected in parallel to the series-connection body. The power conversion apparatus includes: a connection path that, in a first storage battery and a second storage battery that are connected in series, electrically connects the winding with both a negative-electrode side of the first storage battery and a positive-electrode side of the second storage battery; and a control unit that controls switching of the upper arm switch and the lower arm switch such that a current flows between the first storage battery and the second storage battery through the inverter, the winding, and the connection path.
Owner:DENSO CORP
Mechanical device for converting direct current into alternating current
ActiveCN115136485BAC/DC convertorsDc-ac conversion without reversalElectric machineMechanical engineering
The present invention relates to a mechanical device (3) for converting direct current into three-phase alternating current for driving a rotating electric machine, the mechanical device having at least one contact unit having at least two receiving regions (12, 13) for receiving electrical energy in the form of direct current and at least three output regions (9, 10, 11) for outputting electrical energy in the form of alternating current, wherein a first receiving region is designed to contact the positive pole of a direct current feed, wherein a second receiving region is designed to contact the negative pole of a direct current feed, wherein a first output region is designed to provide a first alternating current, wherein a second output region is designed to provide a second alternating current, wherein a third output region is designed to provide a third alternating current, and at least one contact unit for receiving direct current and / or for outputting alternating current. The present invention also relates to a rotating electric machine having such a device.
Owner:SIEMENS AG
POWER CONVERSION DEVICE, PROGRAM, AND METHOD FOR CONTROLLING POWER CONVERSION DEVICE
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
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
Multi-axis modular electronic drive system
A multi-axis modular electronic drive system includes an input module; an inverter module, the inverter module stacked atop the input module, and a control module, the control module stacked atop the inverter module. The input module, the inverter module, and the control module communicate with one another both fluidly and electrically. Additional inverter modules can be stacked atop one another in the disclosed system without interrupting the fluid and electrical connectivity between the other system modules.
Owner:EVRCOOL INC
System for implementing harmonic, frequency and amplitude parameter control in vibrating device
The invention relates to a system for adjusting harmonic, frequency and amplitude parameters by transmitting a rotational motion received from a drive assembly (T) to a shaft (20) movable on a surface (10.1) of a disk (10) and moving said shaft (20) on said surface (10.1); the surface (10.1) is inclined at an angle in different axial directions with respect to the drive shaft (30).
Owner:穆罕默德·希里克米尔
Charging system and method of using same
A charging system and a method of operating the same are provided. The charging system includes an electric machine which may be a wound or un-wound rotor type or a doubly fed induction motor (DFIM). A control system is coupled to the electric machine and a battery system. In the case of a wound rotor, the control system is coupled to stator windings and a rotor winding for controlling excitation of the stator windings and the rotor winding. The charging system is AC and DC compatible. In the case of an AC power source, the control system injects excitation into a rotor winding to induce a desired voltage in the stator, if the power supply voltage of the power supply is greater or smaller than the voltage of the battery system. Other modes of operation allowing for safe charging and discharging of a battery system are also described herein.
Owner:HILLCREST ENERGY TECH LTD