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81 results about "Permanent magnet linear generator" patented technology
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Wind energy and ocean wave energy integrated generation device
InactiveCN104088757ASimple assembly structureImprove efficiencyFinal product manufactureWind motor combinationsPermanent magnet linear generatorEngineering
The invention discloses a wind energy and ocean wave energy integrated generation device. The device comprises two buoys that supply buoyancy, a permanent magnet rotating generator for generating with ocean wind energy, and a permanent magnet linear generator that generates with ocean wave energy; an inner buoy realizes static effect during generation; an outer buoy supplies kinetic energy of the ocean wave energy to the permanent magnet liner generator during generation; the outer buoy is connected with a rotor of the permanent magnet liner generator through an universal connecting shaft and a rigid connecting rod; the permanent magnet linear generator is mounted at the bottom part of the inner buoy; the permanent magnet rotating generator for generating with the ocean wind energy is mounted on the top part of the rigid connecting rod and can radially rotate along the top part of the rigid connecting rod so as to generate under different ocean wind directions. The generation device capable of generating power through ocean wind energy and ocean wave energy is simple in structure and high in efficiency, and can be widely applied to offshore areas and sea areas close to islands.
Owner:SOUTHEAST UNIV
Internal-combustion permanent-magnet linear power generation device
ActiveCN102434277ADissipate quicklyGuaranteed MagneticDynamo-electric machinesFree piston enginesPermanent magnet rotorCombustion chamber
The invention discloses an internal-combustion permanent-magnet linear power generation device, which comprises two two-stroke internal-combustion chambers with the same structure and a permanent-magnet linear power generator including a coil stator, a movable rod and a permanent-magnet rotor sleeved on the movable rod in coaxial mode. The permanent-magnet rotor comprises two groups of radiating rings, two groups of heat insulation rings and a magnetizing permanent-magnet ring group. Correspondingly, the movable rod comprises two movable rod heat transmission sections, a heat insulation section and a movable rod permanent-magnet section. The internal-combustion permanent-magnet linear power generation device can quickly transmit a lot of heat generated in combustion expansion acting processes to the movable rod heat transmission sections through a piston to radiate the heat quickly through the movable rod heat transmission sections and the radiating ring group. Simultaneously, the heat is insulated by the movable rod heat insulation section and the heat insulation ring groups. The movable rod permanent-magnet section and the permanent-magnet ring group sleeved on the movable rod permanent-magnet section are prevented from being affected by heat and keep magnetism. Therefore, the problem that the magnetism of a permanent-magnet body can be reduced and even lost due to the fact that heat is transmitted by the piston of an existing internal-combustion permanent-magnet linear power generation device to the permanent-magnet body and the permanent-magnet body is heated is resolved.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Wave energy-solar energy complementary power self-supply device for drifting buoy
PendingCN107288808ASolving the problem of capturing wave energyBatteries circuit arrangementsMachines/enginesData acquisitionBuoy
The invention discloses a wave energy-solar energy complementary power self-supply device for a drifting buoy. A drifting buoy main body in the device comprises a solar cell panel power generation part, a wave energy power generation part and a controller part, wherein the parts are connected by virtue of conductive wires. The solar cell panel power generation part is located at the top of the drifting buoy main body, and the part is exposed to sea surface, so that conversion for solar energy to electric energy is facilitated; the wave energy power generation part is mainly composed of a wave energy capture mechanism and a cylindrical permanent-magnet linear power generator, and located at the middle part of the drifting buoy, and the part is intersected with the sea surface, so that the wave energy capture mechanism is facilitated to capture wave energy; and the controller part is located at the bottom of the drifting buoy, the part mainly comprises a CPU, an AC / DC conversion module, a power supply management module and a storage battery, and is mainly used for processing voltages output by solar cell panels and a voltage output by the cylindrical permanent-magnet linear power generator and then storing the voltages in the battery, and the voltages are used by a data acquisition system, a communication system and the like of the drifting buoy.
Owner:NANJING UNIV OF INFORMATION SCI & TECH
Condition monitoring based passive magneto rheological vibration damper
InactiveCN103557264ASelf-poweredRealize intelligent closed-loop controlSpringsNon-rotating vibration suppressionEnergy recoveryEngineering
The invention discloses a condition monitoring based passive magneto rheological vibration damper which comprises a magneto rheological vibration damper, a vibrational energy collector, an energy recovery control module and a condition monitoring system, wherein the vibrational energy collector adopts a permanent magnet linear generator formed by an Halbach array based permanent magnet runner and a coil winding stator group, and is used for converting kinetic energy generated by vibrational source excitation into electrical energy; the energy recovery control module is used for storing the electrical energy converted by the vibrational energy collector; the condition monitoring system is used for adjusting the current input into the excitation coil in real time by the energy recovery control module, so as to change the output damping force intensity and realize passive control for the external vibration. The vibration damper provided by the invention has the advantages of small size, high efficiency, energy conservation, convenience in mounting and maintenance, reliable system and the like.
Owner:CHONGQING UNIV
Energy-capturing floating breakwater
InactiveUS20150091304A1% efficiency of energy captureLittle effect of viscosityMachines/enginesEngine componentsSingle degree of freedomPermanent magnet linear generator
Disclosed is a single degree of freedom (DOF) apparatus of extremely high efficiency, which also serves as an effective floating breakwater. The apparatus comprises a unique asymmetric heaving floating body that exhibits minimal influence from viscosity effects. The asymmetric heaving floating body is coupled to a Permanent Magnet Linear Generator (“PMLG”) that serves as a power take off (“PTO”) system. A support structure used to install the apparatus in a desired location is also disclosed. The support structure is designed so as to restrain lateral force and pitching moment. Similarly, the asymmetric floating body is designed to minimize viscosity effects when in motion and for effectively transferring incident wave energy to the PTO. At least one preferred embodiment of the present invention may be referred to by the name “Berkeley Wedge.”
Owner:MADHI FARSHAD +2
Wheel of motor vehicle generating power in motion
InactiveCN101934681ACompact structureEasy maintenanceDynamo-electric machinesWheelsMobile vehiclePermanent magnet linear generator
The invention discloses wheels of a motor vehicle generating power in motion. A plurality of mechanical hydraulic devices are arranged on the wheels of the motor vehicle and are connected with a linear generator. The deformation energy of pneumatic tires is transformed into electric energy for driving a permanent magnet linear generator set to generate power so as to supply a driving power of the motor vehicle and increase the driving range by taking advantage of the characteristic that the gravity and the displacement of the vehicle in a driving process make the deformation of the tires change circumferentially. The electric energy generated by the permanent magnet linear generator of the invention serves as an auxiliary energy source of the motor vehicle, so that the efficiency is high and the energy is saved. No pollution and no noise are generated during work. The mechanical hydraulic device has the advantages of compact structure, convenient maintenance and long service life. The wheels are suitable for various motor vehicles.
Owner:陈星 +1
Rotor structure of resonant type permanent magnet linear generator
InactiveCN102064660ASimple designSmall structureElectrical storage systemBatteries circuit arrangementsPermanent magnet linear generatorConductive materials
The invention provides a rotor structure of a resonant type permanent magnet linear generator, comprising permanent magnet materials and non-conductive materials coating the permanent magnet materials, wherein the permanent magnet materials are in a strip, block or elliptical block shape formed by two or more alternate blocks of non-conductive materials and are uniformly arranged in the non-conductive materials; the rotor structure further comprises chute structures; substrates made of the non-conductive materials are positioned between the rotor structures; each chute structure comprises a reversing spring, a resonant spring, a U-shaped chute and a roll ball; the roll ball is arranged in the U-shaped chute; the substrates are clamped in the U-shaped grooves; the end parts of the substrates are contacted with the roll balls and slide in the U-shaped grooves up and down; two ends of the two U-shaped chutes are correspondingly connected by a connecting plate; the reversing springs are respectively arranged at two ends of each of the two U-shaped chutes; and the resonant springs are respectively arranged between the substrates and two connecting plates.
Owner:麦伟仪 +1
Tension force film type wave energy power generation device
ActiveCN106877572AReduce volumeReduce weightMachines/enginesEngine componentsEngineeringPermanent magnet linear generator
The invention discloses a tension force film type wave energy power generation device. The power generation device comprises a base frame. Support rods are installed on two ends of the base frame. Cross bars are installed on the support rods. A tension force film is arranged between the cross bars and connected with the cross bars through an elastic device. The lower parts of the cross bars are connected with multiple linear generators. When the tension force film is subjected to wave movement affects, all parts are deformed at different degrees to drive the linear generators to generate power. According to the invention, by use of the cylindrical permanent magnet linear generators, the size and the weight of the power generation device are reduced, and the structure is quite compact, so compared with a traditional wave energy conversion device, the power generation device is quite economical and convenient in power supply of oversea floating body structure bodies, and compared with the current solar power supply, the power generation device has quite high capturing efficiency and generates power all the time.
Owner:JIANGSU UNIV OF SCI & TECH
Flow-induced vibration power generating device based on deformable double-layer permeable box-type support
InactiveCN104564492AHigh energy conversion coefficientSimple structureMachines/enginesEngine componentsConversion coefficientsPermanent magnet linear generator
The invention discloses a flow-induced vibration power generating device based on deformable double-layer permeable box-type support; the flow-induced vibration power generating device based on deformable double-layer permeable box-type support comprises a column and a power generator system; a double-layer permeable box-type support is arranged below the column; the double-layer permeable box-type support consists of an upper platform, a middle platform, a lower platform, and elastic connecting plates with through holes; the elastic connecting plates are correspondingly fixed on two sides of the upper platform and the middle platform by staggered bolts, so as to form an upper layer of permeable box-type support; the elastic connecting plates are correspondingly fixed on the other two sides of the middle platform and the lower platform by staggered bolts, so as to form the lower layer of permeable box-type support; the lower platform is fixedly connected with a supporting pile which is penetrated into the sea bed; the power generator system comprises two groups of permanent magnetic linear power generators and linear magnetic rods inserted into coils of the permanent magnetic linear power generators. The flow-induced vibration power generating device based on deformable double-layer permeable box-type support has the advantages of high in conversion coefficient, simple in structure, strong in reliability, free of sliding / rotating nodes, low cost, efficient, long service life, and the like, without being limited to directions of the incoming flow.
Owner:TIANJIN UNIV
Permanent magnet linear generator, magnetorheological damper and magnetorheological damping system thereof
InactiveCN102223049AImprove the utilization of magnetic fieldIncrease power generation rateNon-rotating vibration suppressionDynamo-electric machinesForce linesClosed loop
The invention discloses a permanent magnet linear generator, a magnetorheological damper and a magnetorheological damping system. The permanent magnet linear generator comprises a stator, a connection rod and a plurality of permanent magnets; the stator comprises an accommodation chamber with a telescopic mouth; the inner wall of the accommodation chamber is provided with a plurality of convex teeth at intervals; two opposite sides of the top end of each convex tooth extend along an axial direction of the accommodation chamber to form side teeth; the convex teeth and the side teeth are made of a permeability material, and the adjacent convex tooth and side tooth form a groove for accommodating an electromagnetic coil; the connection rod is positioned in the accommodation chamber of the stator, and is provided with a first connection end extending out of the telescopic mouth; and the plurality of permanent magnets are connected with the connection rod, and a magnetic pole is arranged between the adjacent permanent magnets. By the design of the convex teeth and the side teeth, more magnetic force lines pass through an air gap to form a closed-loop circuit; the utilization rate of a permanent magnet magnetic field is improved; and a value of an induced electromotive force is increased, and the electricity generation rate is high.
Owner:JIAXING UNIV
Double-winding high-powder-density mixed excitation permanent-magnet linear generator
ActiveCN105186733ASimple off-line processIncrease profitMagnetic circuit stationary partsDc currentPermanent magnet linear generator
The invention discloses a double-winding high-powder-density mixed excitation permanent-magnet linear generator which comprises a stator, wherein an even number of stator teeth are uniformly arranged on the stator; a stator slot is formed between two adjacent stator teeth; a permanent magnet is arranged between each stator slot yoke and a corresponding stator back yoke; a main gap is formed between each stator tooth and the corresponding rotor tooth of a rotor; each stator slot comprises armature slots and excitation slots which are arranged at an interval in an alternated manner; a set of excitation winding is arranged in the two adjacent excitation slots in a surrounding manner; direct current without changed direction is introduced into the excitation windings; additional gas gaps are formed in the middles of the yokes of the stator slots on which the excitation windings are positioned; one part of magnetic flux generated by two adjacent permanent magnets enters the rotor by the main gas gaps to form main magnetic flux, and the other part of the magnetic flux generated by the two adjacent permanent magnets passes through the additional gas gaps to form leaked magnetic flux. The double-winding high-powder-density mixed excitation permanent-magnet linear generator can be used for adjusting the leaked magnetic flux by adjusting the direction and the size of the current in the excitation windings, so that effects of magnetism enhancing and magnetism removing can be realized.
Owner:SHANDONG UNIV
Linear generator and charging device
InactiveCN102130568ASimple designSmall structureElectrical storage systemBatteries circuit arrangementsMechanical energyNon magnetic
The invention provides a Halbach magnet array permanent magnet linear generator. A magnetic shielding shell serves as a rigid shell of the generator. A Halbach magnet array provides a sine wave magnetic field for the generator. A resonant spring converts mechanical energy into kinetic energy when producing vibration, so that a rotor assembly produces resonance and a coil winding cuts the magneticfield to produce an induced electromotive force. A sliding chute pedestal is provided with a guide slot which is paired with that of the rotor assembly, and balls are arranged in the matched guide slots to function in guiding the motion of the rotor assembly. A partition board is used for arranging a cushioning seat and fixing the sliding chute pedestal. A magnet array container made from a non-magnetic conducting material is used for enclosing and fixing magnets. The cushioning seat consists of a spring and a cushion pad to prevent the overtravel of the rotor assembly. The generator providedby the invention is simply structured, easy to construct and integrate, low in cost, high in generating capacity and convenient to carry.
Owner:麦伟仪 +1
Pairwise abreast-arrangement free piston permanent-magnet linear generator
The invention discloses a pairwise abreast-arrangement free piston permanent-magnet linear generator, belongs to the technical field of electric vehicle engines and mainly solves the problem that system efficiency cannot be improved greatly by an existing free piston permanent-magnet linear generator. The pairwise abreast-arrangement free piston permanent-magnet linear generator is characterized by comprising permanent-magnet linear generators and internal combustion engines, wherein the permanent-magnet linear generators are arranged pairwise and symmetrically and arranged abreast; the internal combustion engines are arranged at one ends of the permanent-magnet linear generators, and upper positioning guide plates are arranged at ports. The other ends of the permanent-magnet linear generators are provided with bouncing levers, each bouncing lever comprises a straight rod, a support seat and push rods, wherein the support seat is arranged in the middle end of the straight rod, and the push rods are arranged at two ends of the straight rod. The support seats are fixed on a generator fixing bottom plate, the push rods at two ends are matched with two rotors respectively, and ends of the rotors, adjacent to the push rods, are provided with push rod magnetism isolation bars. The pairwise abreast-arrangement free piston permanent-magnet linear generator has the advantages that system efficiency is greatly improved and various fuels can be used, and is mainly used for free piston type internal-combustion linear generator units of power sources of electric vehicles.
Owner:姚远
Wave energy-tidal current energy integrated testing platform and working condition simulation method
ActiveCN105182104AImprove test efficiencyImprove reliabilityElectrical testingLow voltageControl signal
The invention relates to a wave energy-tidal current energy integrated testing platform and a working condition simulation method. The wave energy-tidal current energy integrated testing platform is characterized in that the wave energy-tidal current energy integrated testing platform comprises a wave energy-tidal current energy working condition simulation system and a wave energy-tidal current energy test control system; according to the wave energy-tidal current energy working condition simulation system, a dragging motor-side converter is connected with a permanent magnet synchronous dragging motor, an emergency brake, an inertia wheel and a permanent magnet synchronous generator sequentially, and then is connected with a power generation system composed of a power generator-side converter and a network-side converter through a change-over switch, and a permanent magnet linear generator is connected with the power generation system through the change-over switch, and the high voltage side of a power supply transformer is connected with a power grid, and the lower voltage side of the power supply transformer and the network-side converter are connected with the dragging motor-side converter; according to the wave energy-tidal current energy test control system, an upper computer system transmits related control signals to the wave energy-tidal current energy working condition simulation system, so that tidal current energy working conditions and wave energy working conditions can be simulated, and data acquired by a simulation signal acquisition and input processing system and a power analyzer are analyzed. The wave energy-tidal current energy integrated testing platform and the working condition simulation method of the invention can be widely applied to the wave energy-tidal current energy working condition simulation and performance testing field.
Owner:CHINA NAT OFFSHORE OIL CORP +1
Flow-induced vibration power generation device based on deformable support
InactiveCN104578671AHigh energy conversion coefficientSimple structureDynamo-electric machinesPermanent magnet linear generatorEngineering
The invention discloses a flow-induced vibration power generation device based on a deformable support. The device comprises a cylinder and a generator system, wherein an upper platform and a lower platform which are mutually connected through elastic connecting plates are arranged below the cylinder, the elastic connecting plates are correspondingly and fixedly connected onto two sides of the upper platform and the lower platform through staggered bolts, a support pile penetrating through a seabed is fixedly connected with the lower platform, the generator system comprises a permanent-magnet linear generator and a linear magnetic rod inserted in a coil of the permanent-magnet linear generator, and the linear magnetic rod and the permanent-magnet linear generator are connected with side surfaces of the upper platform and the lower platform respectively through connecting rods. The device has the advantages that the device is simple in structure, high in reliability, free of sliding / rotating nodes, low in cost, high in efficiency, long in service life and the like, and the economy and the engineering applicability of the flow-induced vibration power generation device are enhanced.
Owner:TIANJIN UNIV
Internal-combustion permanent-magnet linear power generation device
ActiveCN102434277BSolve the problem of magnetic performance reduction or even loss of magnetismAvoiding Lead Motion ProblemsFree piston enginesDynamo-electric machinesPermanent magnet rotorCombustion chamber
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Adaptive-wave-frequency wave power generation system
InactiveCN108533444AIncrease the number ofDraft adjustmentMachines/enginesSafety/regulatory devicesWave power generationPermanent magnet linear generator
The invention relates to a floater, comprising a water cavity 1, a partition 2, an air cavity 3, an adjusting shaft 4, pores 14, and a floater shell 16; the partition 2 is used for dividing the insideof the floater into the upper air cavity 3 and the lower water cavity 1; the partition 2 is in threaded connection with the adjusting shaft 4; the adjusting shaft 4 may rotate to drive the partition2 to move up and down, thereby dynamically adjusting draught depth of the floater; both the top and bottom of the floater shell 16 are provided with the pores 14; the adjusting shaft 4 in the middle of the floater is upwardly and coaxially directly connected with a permanent magnet linear generator rotor 10 and is then upwardly connected with direct-current motor 12 through connection component 13; the axes of the adjusting shaft 4, the permanent magnet linear generator rotor 10 and the linear motor 12 are collinear. The invention also provides an adaptive-wave-frequency wave power generationsystem using the floater, comprising a wave state detection system, a parameter adjusting system, a wave energy acquisition system, a power generation system and a solar battery system.
Owner:TIANJIN UNIV
Application method for controlling magnet levitation circular motion device
InactiveCN104796040ASave hydraulic powerSave wind energyMagnetic holding devicesEngineeringPermanent magnet synchronous generator
The invention discloses an application method for controlling a magnet levitation circular motion device. The application methods can be applied to two fields; on one hand, the method can be applied to a permanent magnet linear generator, the manner that a bearing of a rotor is integrally fixed to a magnet of the rotor to rotate is replaced with a manner that the rotor is divided into a magnet portion and a mechanical portion, the separated magnet is prefabricated, the trace control is implemented by the magnet levitation technology, the magnet rotates through inertia as the earth, mechanical friction is solved, and a changing magnetic field generating power is provided, and the generator is a rotor non-contact motion novel one; on the other hand, the device is applied to aerospace vehicles through the application of the permanent magnet linear generator, by means of the changing magnetic field produced by the magnet motion allowing the novel generator to generate power, by the aid of the gravity change value, produced by quality and rotating speed, of a magnetic rotating wheel controlled by the magnetic field, the generator serves as a device changing the moving direction and moving speed of the aerospace vehicles and is a power device flying through the Earth's gravitational field.
Owner:于振州
Semi-active electromagnetic resonant-type tuned mass damper
ActiveCN108374330AImprove energy harvesting efficiencySimple structureBridge structural detailsProtective buildings/sheltersCapacitanceSemi active
Owner:HUNAN UNIV OF SCI & TECH
Double-side built-in V type permanent magnetic linear generator, seabed type wave energy power generator and control method
ActiveCN108494218AImprove operational efficiencySlow down or lock down the running speedElectronic commutation motor controlVector control systemsDamping factorSea waves
The invention discloses a double-side built-in V type permanent magnetic linear generator, a seabed type wave energy power generator based on the linear generator and a control method. The double-sidebuilt-in V type permanent magnetic linear generator is applied to the seabed type wave energy power generator; according to the phase relation between the wave force, in the vertical direction, bornby the seabed type wave energy power generator and operation speed of the generator, phase analysis and area division are carried out, a damping coefficient variable method is used to adjust the amplitude of an electromagnetic force of the linear generator in real time, so that the resultant force phase of the generator is synchronized with the operation speed phase of the same, and further, the operation efficiency of the seabed type wave energy power generator is maximized; and when the sea waves are relatively high, a maximal damping coefficient method is used so that the linear power generator outputs the maximal electromagnetic force, a system device is prevented from damage on the structure, and the safety and stability of the whole system device in the operation process are improved.
Owner:深圳立专技术转移中心有限公司
Efficient wave power generation device under natural coordinate system
InactiveCN106968873ARealize power generationImprove utilization efficiencyMachines/enginesEngine componentsNatural coordinate systemWave power generation
The invention discloses an efficient wave power generation device under a natural coordinate system. The device comprises three power generation units; each power generation unit comprises an inner buoy and an outer buoy which are arranged in a nested manner; the inner buoy is longer than the outer buoy; coils re arranged in the inner buoy; and the outer buoy is connected with permanent magnets through a support. According to the device, the permanent magnets are mounted on the outer buoy, the coils are mounted on the inner buoy, relative movement of the inner buoy and the outer buoy is realized through fluctuation of waves, induction current is produced in closed coil loops, and wave power generation is realized. The power generation manner is a primary energy conversion manner, and the loss in the secondary energy conversion process in the prior art is reduced, so that the utilization efficiency of wave energy is improved. The X-direction power generation unit, the Y-direction power generation unit and the Z-direction power generation unit are designed according to the principle of permanent-magnetic linear power generators, and the wave energy in the three directions can be utilized simultaneously, so that the power generation power of the device is improved.
Owner:DALIAN MARITIME UNIVERSITY
Vernier permanent magnet linear generator
A Vernier permanent magnet linear generator employs a translator having a plurality of translator modules oriented in a vertical array. At least a portion of the plurality of translator modules has permanent magnets. Supports at lateral edges of the plurality of translator modules and a rod connected to the supports attach the translator to a driving element. The driving element reciprocating the translator in a longitudinal direction. Two stators are supported on a reaction body oppositely spaced from the vertical array of translator modules by an air gap and offset by one half slot pitch. The stators have three phase integral-slot stator windings magnetically interacting with a magnetic field induced by the permanent magnets. A slot depth of the stators is configured such that an 11th harmonic component of the magnetic field is saturated at a multiple value of a 1st harmonic component.
Owner:DEHLSEN ASSOC LLC
Wave power generation system based on tubular type permanent-magnet linear generator
InactiveCN106640505APromote absorptionEasy to design and debugMachines/enginesEngine componentsWave power generationSea waves
The invention relates to the technical field of sea wave power generation and linear movement power generation, in particular to a wave power generation system based on a tubular type permanent-magnet linear generator. The wave power generation system based on the tubular type permanent-magnet linear generator comprises a main panel and generator modules, wherein a plurality of motor grooves are formed in the main panel; the generator modules are inlaid in the motor grooves; each generator module comprises a primary stator, a secondary rotator and a central shaft; each primary stator is arranged on the inner wall of the corresponding motor groove; each central shaft is arranged in the center of the corresponding motor groove; each secondary rotor takes the corresponding central shaft as an axis and flows through the corresponding motor groove along with wave so as to drive the corresponding primary stator to move in the front-back direction in a reciprocating manner; and wave energy is converted into electric energy. The main panel is separated from the generator modules, design debugging and repair and maintenance in the future of an electrical control system are facilitated greatly, the power generation system is optimized, wave energy can be absorbed well, and the economic effect is good.
Owner:JIANGSU UNIV OF TECH
Simulation test device of direct-drive wave power generation system and using method thereof
ActiveCN103513135AResponse dynamic performanceSimple structureDynamo-electric machine testingWave power generationGrating
The invention relates to a simulation test device of a direct-drive wave power generation system and a using method of the direct-drive wave power generation system. The simulation test device comprises a mechanical part and an electronic control part. The mechanical part comprises a mechanical limit seat, two guide rails are fixed to the mechanical limit seat, a permanent magnet linear motor and a generator are arranged on the guide rails, and a grating ruler is arranged on any guide rail. The electronic control part comprises an upper computer, a motor control instruction, the location information of the permanent magnet linear motor and the voltage signals and the current signals of a DC-AC converter are all transmitted to a motor controller, the direct-current bus currents of the DC-AC converter are controlled to be inverted by the motor controller and are input into the permanent magnet linear motor, thrust is output, the permanent magnet linear motor is pushed to generate electric energy, and output three-phase alternating currents are transmitted to an AC-DC converter. The control strategy of the generator, the location information of the permanent magnet linear motor and the voltage signals and the current signals of the AC-DC converter are all transmitted to a generator controller, the three-phase alternating currents are controlled by the generator controller to output direct currents through the AC-DC converter, and power is supplied to loads.
Owner:TSINGHUA UNIV
Synchronous reluctance-type linear generator drive-based wave generator
ActiveCN105811726AReduce capacityReduce dosageDynamo-electric machinesWave power generationDistributed structure
The invention discloses a synchronous reluctance-type linear generator drive-based wave generator, which comprises an upper floating plate, a lower floating plate and a plurality of cylindrical synchronous reluctance-type linear generators, wherein the plurality of cylindrical synchronous reluctance-type linear generators are distributed between the upper floating plate and the lower floating plate; and each cylindrical synchronous reluctance-type linear generator comprises a short primary and a long secondary. By a multi-motor distributed structure, a few of permanent magnets are inserted into secondary reluctance slots of the synchronous reluctance-type linear generators, so that the advantages of the synchronous reluctance-type linear generators and a permanent magnet linear generator are well combined; the capacity of single generator is reduced; furthermore, the permanent magnet is relatively small in dosage and low in cost; modularization is easy to implement; and the wave generator is suitable for wave power generation and is also suitable for an active electromagnetic damper, an oscillating system and the like.
Owner:ZHEJIANG UNIV
Novel multi-buoy direct-driven type wave power generation device
InactiveCN110206677ARealize acquisitionReduce frictionMachines/enginesEngine componentsWave power generationHigh energy
The invention discloses a novel multi-buoy direct-driven type wave power generation device, and belongs to the field of wave energy acquisition. The wave energy can be efficiently converted into the electric energy. The novel multi-buoy direct-driven type wave power generation device has the advantages of being simple in structure, convenient to install and repair and environmentally friendly, canadapt to various wave heights and the wave periods, and achieves the quite high energy conversion efficiency. The novel multi-buoy direct-driven type wave power generation device comprises multiple buoys, Halbach permanent magnet linear generators, linear sliding rails and sliding wheels. The end faces of the multiple buoys are connected to be linear through the linear sliding rails and the sliding wheels. The primary pole and the secondary pole of each Halbach permanent magnet linear generator are installed on the adjacent end faces of the two corresponding buoys correspondingly. Acceleration sensors are installed on the surface of each buoy, and a signal acquisition and processing system, a buoy length control system, an electric energy control and storage device and a cable are installed inside each buoy. The acceleration sensors are connected with the signal acquisition and processing systems, the buoy length control systems and the electric energy control and storage devices. Theprimary poles of the Halbach permanent magnet linear generators are connected with the electric energy control and storage devices and the cables.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Energy-capturing floating breakwater
InactiveUS9416766B2Little effect of viscosityEnergy efficiencyMachines/enginesEngine componentsEngineeringPermanent magnet linear generator
An apparatus comprises an asymmetric heaving floating body that resists influence from viscosity effects. The asymmetric heaving floating body is coupled to a Permanent Magnet Linear Generator (“PMLG”) that serves as a power take off (“PTO”) system. A support structure for the apparatus is designed so as to restrain lateral force and pitching moment. Similarly, the asymmetric floating body is designed to minimize viscosity effects when in motion to transfer incident wave energy to the PTO.
Owner:MADHI FARSHAD +2
Direct drive type permanent magnet linear generator for wave power generation
InactiveCN112532010ACompact structureReduce volumeReciprocating/oscillating/vibrating magnetic circuit partsMachines/enginesWave power generationReciprocating motion
The invention discloses a direct drive type permanent magnet linear generator for wave power generation. The generator comprises a stator structure, a rotor structure and a buoy, wherein the rotor structure is fixed in the buoy and reciprocates up and down along with the buoy, a cavity is arranged in the rotor structure, the stator structure is arranged in the cavity, and a Halbach array is adopted for the arrangement of a permanent magnet part. The shell is fixed to the inner wall of the buoy and drives the linear generator rotor structure to reciprocate up and down along with fluctuation ofwaves, the coil winding in the stator structure in the static state cuts magnetic field lines, and therefore induced electromotive force is generated. The permanent magnet linear generator has advantages of simple and compact structure, small size, light weight, high power density, high power generation efficiency and the like.
Owner:JIANGSU UNIV OF SCI & TECH
Permanent magnet linear generator
ActiveCN102185457ASimple structureStable structureDynamo-electric machinesFriction lossElectric machine
The invention relates to a permanent magnet linear generator, and particularly is suitable for a direct-drive wave energy generating system and a hybrid vehicle generating system. The generator comprises a stator and two rotors, wherein the stator comprises permanent magnets and a rotor yoke; the top surface and the lower surface of the rotor yoke are adhered to the permanent magnets; each rotor comprises a rotor iron core and a coil; the coil is embedded into the slot of the rotor iron core; and the two rotors are symmetrically arranged on the upper side face and the lower side face of the stator respectively. According to the generator, the number of the bearings of the two motors is halved, bearing force is zero, an air gap is adjusted concisely and conveniently, and friction loss is small; and particularly, according to the technical scheme of the generator with a symmetrical structure, a symmetrical structure with four motors or six motors can be formed, thus a permanent magneticlinear generator with higher motor efficiency can be obtained.
Owner:中国船舶重工集团公司第七一二研究所
A bilateral built-in V-shaped permanent magnet linear generator, a submarine wave energy generating device and a control method
ActiveCN108494218BImprove operational efficiencySlow down or lock down the running speedElectronic commutation motor controlVector control systemsSea wavesPermanent magnet linear generator
The invention discloses a double-side built-in V type permanent magnetic linear generator, a seabed type wave energy power generator based on the linear generator and a control method. The double-sidebuilt-in V type permanent magnetic linear generator is applied to the seabed type wave energy power generator; according to the phase relation between the wave force, in the vertical direction, bornby the seabed type wave energy power generator and operation speed of the generator, phase analysis and area division are carried out, a damping coefficient variable method is used to adjust the amplitude of an electromagnetic force of the linear generator in real time, so that the resultant force phase of the generator is synchronized with the operation speed phase of the same, and further, the operation efficiency of the seabed type wave energy power generator is maximized; and when the sea waves are relatively high, a maximal damping coefficient method is used so that the linear power generator outputs the maximal electromagnetic force, a system device is prevented from damage on the structure, and the safety and stability of the whole system device in the operation process are improved.
Owner:深圳立专技术转移中心有限公司
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