CN202503419U – Vernier-type Linear Motor For Direct-drive Wave Power Generation – Google Patents

Technical problem: the utility model does not match to the traditional mechanical gear drive speed of service and sea wave power generation system speed; Propose a kind of seawave power generation that directly drives and used the cursor type linear electric motors; Solved that mechanical step-up gear power density in the existing transmission device is low, problem such as mechanical wear and noise, solved two gap structures of independent adjustable magnetic ring simultaneously, simplified the device manufacture craft; Volume, the weight of motor have been reduced; Reduce manufacturing cost, improved the capacity of efficient and motor, improved the generating capacity of device. 1) directly drive, no intermediate mechanical gear transmission structure has been simplified electricity generation system, and the operating mode when being specially adapted to wave low speed can realize being equivalent to the effect of motor speedup, has reduced the volume of motor, has improved generating efficiency. 2) stator and mover all have permanent magnet and opposite in the polarity of air gap both sides, have improved air gap flux density, have reduced leakage field; Effective harmonic wave composition value of row ripple cutting magnetic field is higher than general magnetic field modulation system permanent-magnetism linear motor after the stator modulation; Can suppress the fluctuation of row ripple cutting magnetic field, the limit end effect has been eliminated in the design of cylinder-shaped device simultaneously; Thereby improved the control precision of generator, improved the quality of power supply.

  1. Trabajar o estar en entornos demasiado ruidosos o contaminados
  2. Alcohol polivinílico, un material plástico que parece arena gruesa
  3. No responde al tratamiento y además empeora con el tiempo
  4. Factores medioambientales
  5. Es un buen astringente, rico en taninos y estimula la circulación sanguínea
  6. Compresa tibias
  7. El colesterol es una moda
  8. La predisposición genética

MEDUSAS The bolt material may also be chosen to have a low Young’s modulus and high yield strength. While the alloys do show lower corrosion resistance than stainless steel, it is relatively simple to design an enclosure that will transfer load to the magnetostrictive element while also sealing very effectively against the ocean environment, because embodiments of the design have no moving parts. 4) motor is a compact list gap structure, effectively reduces the magnetic resistance impedance, and processing technology is simple, and stability and reliability are improved.

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8) contactless variable transmission mechanism can effectively suppress the travelling-magnetic-field distortion, guarantees higher generating efficiency. The utility model discloses a kind of seawave power generation that directly drives of magnetic field modulation formula and uses the cursor type linear electric motors; Utilize the wave fluctuating to promote floating drum and do rectilinear motion up and down; Make the secondary permanent magnet that is fixed in the floating drum produce the low speed travelling-magnetic-field; After the magnetic field modulation of long elementary stator tooth, form the high speed travelling-magnetic-field again, cut static relatively elementary threephase armature winding, produce induced electromotive force.Because elementary stator tooth has the magnetic field modulation effect; Can realize the speedup of travelling-magnetic-field; The permanent magnet that embeds on the stator has simultaneously increased air gap flux density, has reduced leakage field, the effect of the high electromotive force of elementary winding internal induction when reaching mover low speed; The three-phase electricity of with DC-to-AC converter the cursor type linear electric motors being sent again is converted into the power frequency electricity, just can give user or electrical network with power delivery.

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When wave promotes floating drum with speed v 1During rectilinear motion, produce speed v up and down 1The low speed travelling-magnetic-field, after the adjustable magnetic effect through stator tooth, formation speed is 6.75v in the stator teeth groove 1The High Speed Modulation travelling-magnetic-field, send electric energy behind the cutting stator armature winding. 4 parameter designs.When wave promotes floating drum with speed v 1During rectilinear motion, produce speed v up and down 1The low speed travelling-magnetic-field, after the adjustable magnetic effect through stator tooth, formation speed is 6.75v in the stator teeth groove 1The High Speed Modulation travelling-magnetic-field, send electric energy behind the cutting stator armature winding. The seawave power generation that directly drives of the utility model comprises cylindric stator core, armature winding, stator permanent magnet, cylindric mover iron core, rotor permanent magnet with the cursor type linear electric motors.Rotor permanent magnet vertically the compartment of terrain, embed on the mover iron core equably, stator core adopts the open slot structure, three phase windings embed in the wire casing of stator core, stator permanent magnet embeds between two stator tooths; Long elementary stator core is through being anchored on the bottom, and short secondary mover iron core is fixed in the floating drum, and is across the sea floating.

Preferably, the material of stator core and mover iron core is silicon steel sheet. This explains the flat regions at low stresses in the Figure 3-2 plots, and that this flat region becomes progressively more prominent at greater magnet thickness. Ocean wave energy is a kind of free of contamination renewable clear energy sources.Traditional sea wave power generation system mainly is made up of rotary generator and mechanical gear transmission mechanism, converts the low-speed rectilinear movement of wave to high speed rotary motion through gear drive.Yet, adopt gear box to carry out speed governing as intermediate link, the whole drive system volume and weight is increased, also have problems such as noise, wearing and tearing, low-response, efficient are low simultaneously.Magnetic field modulation formula magneto is a kind of direct-drive motor of nearest proposition, and its core concept is the application that the magnetic gear is realized contactless transmission, and the magnetic gear has advantages such as noiseless, low-speed high-thrust, overload protection as a kind of new gear structure.Yet the structure of its pair air gap exists air-gap reluctance bigger, and making needs higher technological level, this structure directly is used for seawave power generation implements difficulty.Therefore, be necessary to propose a kind of novel direct drive seawave power generation and use linear electric motors.

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Embodiments of the design are expected to have relatively low capital costs and very good survivability during downhole drilling operations. The size and spring constant of the compression spring 114, along with the diameter of the magnetostrictive alloy material 104 can all be adjusted to create a design that is suitable for a given drilling operation and/or power requirement. The magnetostrictive core, permeable materials, and the permanent magnets may experience changes in stress, experience at least part of the applied load on a structure comprising the flux path, (e.g., a tether), and/or share other functions with the magnetostrictive element. Preferably, stator tooth and stator slot combination are used to carry out magnetic field modulation, and satisfying equal length is the stator tooth number n of L sBe rotor permanent magnet number of pole-pairs n rWith three phase winding number of pole-pairs n pSum. Stator tooth 5 is used to carry out magnetic field modulation with stator slot 7 combinations, and satisfying equal length is stator tooth 5 number n of L sBe rotor permanent magnet 2 number of pole-pairs n rWith three phase windings, 6 number of pole-pairs n pSum.

Other embodiments include a device where the magnetic flux is directed through one or more magnetostrictive elements by one or more “flux paths” composed of, in addition to the one or more magnetostrictive elements themselves, a combination of magnetically permeable material and one or more permanent magnets. In this embodiment the energy generating device 100 is mounted on the outer surface of a pipe 102 that is part of the drill string (not shown). 6) rotor permanent magnet adopts high energy product neodymium iron boron excitation, substitutes electric excitation, does not have slip ring and brushgear, has advantages such as the little and electrical control of loss is more simple. The short secondary mover iron core that comprises mover of motor, rotor permanent magnet; Rotor permanent magnet axially spaced-apart and embedding equidistantly on the mover iron core, the mover iron core is fixed in the floating drum, and floating drum is across the sea floating.