US20120129700A1 - Linear machine having a primary part and a secondary part - Google Patents

Linear machine having a primary part and a secondary part Download PDF

Info

Publication number
US20120129700A1
US20120129700A1 US12/532,954 US53295408A US2012129700A1 US 20120129700 A1 US20120129700 A1 US 20120129700A1 US 53295408 A US53295408 A US 53295408A US 2012129700 A1 US2012129700 A1 US 2012129700A1
Authority
US
United States
Prior art keywords
coils
primary
linear machine
secondary coils
intermediate elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/532,954
Other languages
English (en)
Inventor
Jan Wiezoreck
Ingolf Hahn
Carsten Bührer
Jakob Fallkowski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zenergy Power GmbH
Original Assignee
Zenergy Power GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zenergy Power GmbH filed Critical Zenergy Power GmbH
Assigned to ZENERGY POWER GMBH reassignment ZENERGY POWER GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FALLKOWSKI, JAKOB, BUHRER, CARSTEN, HAHN, INGOLF, WIEZORECK, JAN
Publication of US20120129700A1 publication Critical patent/US20120129700A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/47—Air-gap windings, i.e. iron-free windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K55/00—Dynamo-electric machines having windings operating at cryogenic temperatures
    • H02K55/02—Dynamo-electric machines having windings operating at cryogenic temperatures of the synchronous type
    • H02K55/04—Dynamo-electric machines having windings operating at cryogenic temperatures of the synchronous type with rotating field windings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment

Definitions

  • the invention relates to a linear machine having a primary part, which has a plurality of annular primary coils, which are arranged concentrically with respect to an axis and are separated from one another by intermediate elements, and having a secondary part which has a plurality of secondary coils, to which direct current can be applied and which are arranged axially alongside one another with alternating polarity and have superconductor windings, with one part being movable backward and forward relative to the other part parallel to the axis.
  • DE 195 42 551 A1 discloses a linear motor having a hollow-cylindrical primary part, which has annular primary coils which are arranged concentrically with respect to a movement axis of a secondary part and can be operated with polyphase current.
  • Annular laminates composed of soft-magnetic material are arranged between the primary coils, are used as intermediate elements to separate adjacent primary coils, and form magnetizable teeth, in order to amplify the magnetic flux and to pass this to the receptacle in which the secondary part is arranged.
  • the primary coils and the annular laminates are accommodated in a hollow-cylindrical yoke composed of magnetizable material, which forms a magnetic return path.
  • the secondary part is arranged such that it can move axially within the receptacle that is formed by the primary part.
  • the secondary part has a plurality of field magnets composed of superconductor windings, which are arranged one behind the other with alternating polarity in the axial direction.
  • the magnetic fields of the secondary windings are at right angles to the axis of the secondary part.
  • the axis of each individual coil through which current flows must be at right angles to the movement axis of the linear motor. Only if permanent magnets or superconducting solid-body magnets are used can these magnets rest with their inner circumferential surface on a cylindrical yoke composed of magnetizable material.
  • EP 1 465 328 A1 discloses a linear motor in which the primary part and secondary part are arranged reversed, such that the secondary part is on the outside, and surrounds the primary part.
  • the capability to magnetize the soft-magnetic teeth is restricted because magnetic saturation occurs in the soft-magnetic material.
  • the number of turns in the primary coils be increased or that the amount of magnetizable material be increased.
  • a concept for a linear motor, in which the stator has primary coils composed of a superconductor material which comprise high-temperature superconducting double-pancake coils, is known from Superconductor Science and Technology, 17 (2004), page 445 to 449.
  • an actuator is proposed which is fitted with NdFeB magnets.
  • an actuator is proposed which comprises solid-body superconductors, which are formed by means of a combination of iron laminate wafers and YBCO.
  • EP 0 425 314 A1 discloses a linear motor in which both the coils in the primary part and the coils in the secondary part comprise saddle-type coils which are curved in the form of an arc and are arranged axially offset with respect to one another.
  • the magnetic field of the saddle-type coils in the primary part and in the secondary part is at right angles to the movement axis.
  • a linear machine in which considerably higher force densities are made possible by design measures on the primary part and/or secondary part, even for linear machines of small physical size.
  • the arrangement of the primary coils in the primary part is in the form of an air-gap winding with intermediate elements composed of non-magnetizable material, and the secondary coils are composed of windings of a high-temperature superconductor, as a result of which force densities of more than 18 N/cm 2 can be achieved.
  • the linear machine is in the form of a linear motor, in which a relative movement is produced between the primary part and secondary part parallel to the axis by applying current to the primary and secondary coils, via the magnetic fields that are produced in this way, and the invention will be described in the following text primarily with reference to this.
  • the linear machine may also be in the form of a generator, in which a current which is induced in the primary coils by the relative movement between the primary part and secondary part is converted in order to obtain energy.
  • the high force densities when the linear machine is in the form of a linear motor can be achieved by applying alternating current to the primary coils and direct current to the secondary coils. Since the arrangement of the primary coils and also the arrangement of the secondary coils are in the form of an air-gap winding, that is to say no magnetizable material for flux guidance is arranged either between the primary coils or between the secondary coils, the force density in the case of the linear machine according to the invention is not limited by saturation magnetization.
  • current level in the primary part that is to say the current in the circumferential direction per axial length of the primary part
  • the force density which is proportional to the current level, rises without saturation effects.
  • No iron or magnetizable material for concentration of the magnetic flux is arranged between the primary coils.
  • the use of secondary coils composed of high-temperature superconducting material, which has a critical temperature which is higher than 77 K, in the secondary part allows large direct currents to be applied to the secondary coils, in order to make it possible to produce extremely strong magnetic fields in the receptacle.
  • a further advantage with the linear motor according to the invention is that a force profile which is virtually smooth in the axial direction is achieved since the air-gap winding means that there are largely no reluctance forces in practice, and in consequence scarcely any cogging forces occur. Furthermore, since there are no permanent magnets and magnetizable material in the primary part and secondary part, and no magnetic forces therefore occur when the current that is supplied is switched off, the linear motor can be serviced and cleaned relatively easily.
  • a high current level in the primary part can be achieved in particular by choosing a high filling factor for the primary part.
  • the filling factor is defined as the volume ratio of the volume of the primary coils through which current flows to the volume of the intermediate elements and any intermediate spaces that there may be between the primary coils.
  • the filling factor of the primary part is greater than 70%, and in particular greater than 85%.
  • Primary coils which are adjacent in the axial direction preferably have an alternating current with a phase shift of 120° applied to them, as a result of which the linear motor forms a three-phase motor. In the case of a two-phase motor or a polyphase motor with more than three phases, the phase shift may be adapted or chosen differently.
  • the primary coils may have windings composed of a normal conductor, in particular such as a conductor composed of aluminum or copper, as a result of which the primary coils may, for example, be liquid-cooled or gas-cooled in a cost-effective manner. Cooling with water or oil, for example, is particularly advantageous.
  • the normal conductor may also be formed from a hollow conductor, whose internal tube is used for cooling.
  • the windings of the primary coils could be composed of or be manufactured from a superconducting conductor, in particular a high-temperature superconducting conductor.
  • the current that is applied should then be applied using alternating current at a frequency of less than 100 Hz, in particular of less than 50 Hz, in order to keep alternating-current losses in the superconducting primary coils low, which would otherwise have to be compensated for by additional coolant.
  • force densities of more than 18 N/cm 2 can be achieved, and when using superconductors both in the secondary coils and in the primary coils, it is even possible to achieve force densities of more than 25 N/cm 2 .
  • Cooling lines through which a coolant can flow may also be formed between the coils, or gaps may be left open between the primary coils and if appropriate the intermediate elements, in order to cool the primary coils.
  • the intermediate elements may be in the form of annular segments thus allowing a coolant to be passed to the end faces, which are not covered by the annular segments, of the primary coils.
  • the intermediate elements may extend over the entire area, partially or with intermediate spaces over the radial height of the primary coils.
  • the intermediate elements may also comprise grid structures, hollow bodies or grid bodies, which are sufficiently mechanically robust and at the same time allow a coolant to flow through them.
  • the primary coils and the intermediate elements are sheathed by a yoke, which is composed of non-magnetizable material, in particular a lightweight material without any iron.
  • the yoke may be composed of material which does contain iron and/or which can be magnetized, for magnetic field shielding.
  • the yoke and the intermediate elements may form a mechanical holding structure for the primary coils.
  • the yoke may have slots on its internal circumference, in which slots the intermediate elements engage in an interlocking manner.
  • Anchoring the intermediate elements on the yoke allows the primary coils to be supported in the axial direction on the intermediate elements, which means that the yoke can absorb the magnetic field forces which act on the primary coils, in the axial direction.
  • forming the primary part without any iron can achieve a particularly lightweight design for the primary part and therefore for the linear machine, while avoiding saturation effects at the same time.
  • the yoke may have a magnetizable material in order to form a return path for the magnetic flux.
  • the primary coils may be encapsulated in plastic, for example in synthetic resin, in particular in epoxy resin.
  • the intermediate elements in one advantageous refinement of the invention are likewise manufactured from plastic, for example synthetic resin, in particular epoxy resin, and can be reinforced with fiber reinforcement, for example by insertion of glass fiber material.
  • the superconducting secondary coils can carry high current densities, for example current densities of more than 50 A/mm 2 , furthermore of more than 70 A/mm 2 and in particular more than 100 A/mm 2 , thus making it possible to produce an extremely strong magnetic field by means of the secondary coils.
  • the flux densities which can be produced by the secondary part in the air-gap may reach more than 0.5 Tesla, more than 1 Tesla, and possibly up to 2 Tesla.
  • the secondary part has a cylindrical supporting body adjacent to or on whose casing surface the secondary coils are arranged.
  • the supporting body of the secondary part is produced from a non-magnetic material, for example from fiber-reinforced plastic.
  • the supporting body could also be produced from or be composed of a magnetic material, in particular iron.
  • the secondary coils have an annular shape and are arranged concentrically with respect to one another with respect to the axis, mounted on the associated supporting body of the secondary part. Secondary coils which are adjacent in the axial direction have direct current applied to them in antiphase, by opposite polarity connection, during operation.
  • annular spacing elements can be arranged between the secondary coils, on which spacing elements the secondary coils are supported in the axial direction.
  • adjacent secondary coils are at a distance from one another which is at least twice as great, and preferably more than this, as the width of the respective secondary coils in the axial direction.
  • a plurality of coils can also be combined to form a pack, all having the same current flow direction (connected in series or in parallel). A reverse current direction is then in each case applied only to adjacent coil packs.
  • FIG. 1 shows a linear motor according to the invention with a primary part and a secondary part, according to a first exemplary embodiment and in the form of a longitudinal section;
  • FIG. 2 shows a perspective view of the secondary part from FIG. 1 .
  • FIG. 1 illustrates a linear motor, which is annotated 10 in its totality, with a primary part 20 and a secondary part 30 .
  • the primary part 20 bounds a cylindrical receptacle 11 in which the secondary part 30 can move backward and forward along a central axis A.
  • the primary part 20 has five primary coils 21 which are arranged concentrically with respect to the axis A.
  • the drawing shows only one motor section from an entire motor since, for example, the number of coils or coil packs must be divisible by three, for example, for three-phase operation.
  • the primary coils 21 comprise annular disk coils to which phase-shifted alternating current or three-phase current can be applied, phase-shifted through 120°, for example, on the external circumference via contacts which are not illustrated, in order to produce a magnetic traveling field by means of the primary coils 21 in the receptacle 11 .
  • the windings, which are composed of a copper conductor, of the primary coils 21 are encapsulated in epoxy resin, to provide mechanical robustness.
  • Annular intermediate elements 22 are likewise arranged between the primary coils 21 , on which intermediate elements 22 the end faces of the primary coils 21 are supported in the axial direction. The intermediate elements 22 extend in the axial direction from the internal circumference of the primary coils 21 to the external circumference of the primary coils 21 .
  • a hollow-cylindrical yoke 23 on which the intermediate elements 22 are anchored (not illustrated), rests on the external circumference of the intermediate elements 22 and of the primary coils 21 .
  • the yoke 23 and the intermediate elements 22 thus form a mechanical holding structure for the primary coils 21 that are accommodated therein.
  • the yoke 23 around the primary part 20 may be composed of non-magnetizable material or, for shielding purposes, also of magnetizable material. In the latter case, it is even possible for the force density to be increased. If the yoke 23 is composed of electrically conductive material, then it can preferably be formed by means of laminated or slotted materials, in order to reduce alternating-current losses.
  • the intermediate elements 22 may be composed of glass-fiber-reinforced plastic and, according to the invention, therefore cannot be magnetized, as a result of which the magnetic field which is produced in the receptacle 11 when current is applied to the primary coils 21 is not limited by saturation magnetization of the intermediate elements 22 .
  • the arrangement of the primary coils 21 located alongside one another in the axial direction is therefore in the form of a so-called air-gap winding.
  • air-gaps between the primary coils 21 are filled with the intermediate elements 22 , which are possibly partially hollow and/or are used exclusively for insulation.
  • Very broad primary coils 21 with a large number of turns per unit axial length can therefore be used in the primary part 20 . Since the volume of the intermediate elements 22 occupies only a fraction of the volume of the primary coils 21 , the filling factor of the primary part with turns which carry current and also produce a magnetic field (traveling field) is considerably more than 50%. A higher current can therefore be introduced into the primary coils 21 of the primary part 20 .
  • the secondary part 30 which is illustrated in FIG. 1 and FIG. 2 , has annular secondary coils 31 , which are arranged concentrically with respect to the axis A and are composed of a high-temperature superconductor. These secondary coils 31 , which are superconductive at cryogenic temperatures of more than 20 K, have direct current applied to them, with secondary coils 31 which are adjacent in the axial direction being connected in antiphase.
  • the high-temperature superconductor windings and secondary coils 31 in the secondary part 30 may be in the form of pancake coils, double-pancake coils, packs composed of these pancake coils or short solenoid coils.
  • Annular spacing elements 32 are likewise arranged between the secondary coils 31 , and are arranged concentrically with respect to the axis A.
  • the spacing elements 32 are composed of glass-fiber-reinforced epoxy resin and are arranged together with the secondary coils 31 on a hollow-cylindrical supporting tube 33 .
  • the hollow-cylindrical supporting tube 33 may be manufactured from soft-magnetic magnetizable material such as soft-magnetic iron, or may likewise be composed, for example, of glass-fiber-reinforced plastic.
  • the cryostat 34 is provided with a double-walled tube 36 .
  • the intermediate space, which is not illustrated, between the “warm” outer tube wall and the “cold” inner tube wall of the tube 36 is evacuated, in order to prevent heat from being introduced from the outside into the cryostat 34 , or to constrain it. If required, an insulation layer composed of commercially available super insulation sheet can also be fitted around the cold tube wall. Force is transmitted from the secondary part 30 to the cryostat 34 by means of schematically indicated transmission elements 35 a and 35 b.
  • the transmission elements 35 a, 35 b are composed of a material of low thermal conductivity and high mechanical strength, for example of glass-fiber-reinforced plastics.
  • the secondary coils 31 can be operated with current densities of up to 100 A/mm 2 .
  • the linear motor 10 with a primary part 20 designed according to the invention and with an air-gap winding of the primary coils and a secondary part 30 designed according to the invention allows force densities of more than 18 N/cm 2 to be achieved in the receptacle 11 between the primary part and the secondary part, in order to move the secondary part 30 parallel to the axis A.
  • the number of primary and secondary coils in the axial direction is only an example and, in particular, may vary with the width of the coils and the overall length of the linear motor.
  • the secondary coils may also be arranged in a spiral shape.
  • the yoke and the supporting tube for the secondary part may also be composed of material containing iron.
  • the supporting tube for the secondary part may also be omitted, if the secondary coils have been firmly connected to one another together with the spacers, for example by vacuum impregnation.
  • the supporting tube for the secondary part may be composed of laminated and slotted magnetizable material, or likewise, for example, from glass-fiber-reinforced plastic.
  • Hard-magnetic materials may also be used as a supporting tube in the secondary part through which direct current flows.
  • normally conductive primary coils they can be cooled indirectly or preferably directly, for example by water, oil, gas or nitrogen (N 2 ).
  • suitable gas or dry cooling which allows an operating temperature of below 77 K, for example 20 K or 30 K.
  • the primary coils may be provided with braided-wire windings.
  • a second primary part could also be arranged within the secondary part, in order to further increase the force density.
  • the primary part could also be moved parallel to the axis by the magnetic field that is produced when current is applied.
  • the primary part could be arranged internally, and the secondary part could be arranged externally.
  • the secondary part to which direct current is applied could be moved mechanically, for example by a rising and falling buoy of a wave-driven power station.
  • the current which is induced in the primary windings of the primary part by means of this movement of the secondary part could be used to obtain energy, with the linear machine then acting as a generator.
  • the primary part could also carry out the backward and forward movement parallel to the axis with the secondary part being stationary, without departing from the scope of protection of the attached claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Linear Motors (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Types And Forms Of Lifts (AREA)
  • Crushing And Grinding (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Superconductive Dynamoelectric Machines (AREA)
US12/532,954 2007-03-27 2008-03-25 Linear machine having a primary part and a secondary part Abandoned US20120129700A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102007015168A DE102007015168A1 (de) 2007-03-27 2007-03-27 Linearmaschine mit einem Primärteil und einem Sekundärteil
DE102007015168.5 2007-03-27
PCT/EP2008/002333 WO2008116622A1 (de) 2007-03-27 2008-03-25 Linearmaschine mit einem primärteil und einem sekundärteil

Publications (1)

Publication Number Publication Date
US20120129700A1 true US20120129700A1 (en) 2012-05-24

Family

ID=39627583

Family Applications (2)

Application Number Title Priority Date Filing Date
US12/532,954 Abandoned US20120129700A1 (en) 2007-03-27 2008-03-25 Linear machine having a primary part and a secondary part
US12/532,967 Expired - Fee Related US8154144B2 (en) 2007-03-27 2008-03-25 Linear generator with a primary part and a secondary part for power generation in a wave-driven power station and wave-driven power station

Family Applications After (1)

Application Number Title Priority Date Filing Date
US12/532,967 Expired - Fee Related US8154144B2 (en) 2007-03-27 2008-03-25 Linear generator with a primary part and a secondary part for power generation in a wave-driven power station and wave-driven power station

Country Status (17)

Country Link
US (2) US20120129700A1 (de)
EP (2) EP2132865A1 (de)
JP (2) JP2010522530A (de)
KR (2) KR101075434B1 (de)
CN (2) CN101669270A (de)
AT (1) ATE476778T1 (de)
AU (1) AU2008232023B2 (de)
BR (2) BRPI0808357A2 (de)
CA (2) CA2682241A1 (de)
DE (2) DE102007015168A1 (de)
DK (1) DK2132866T3 (de)
ES (1) ES2349179T3 (de)
MX (1) MX2009009157A (de)
PT (1) PT2132866E (de)
RU (1) RU2009133112A (de)
WO (2) WO2008116622A1 (de)
ZA (1) ZA200907483B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112994403A (zh) * 2021-04-26 2021-06-18 合肥工业大学 一种低涡流损耗的齿槽型圆筒直线电机的初级结构

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101970857A (zh) 2008-02-07 2011-02-09 S·格特勒 波能发电单元
US7855485B2 (en) * 2009-02-04 2010-12-21 TECO - Westinghouse Motor Company Air core stator installation
JP5308317B2 (ja) * 2009-11-30 2013-10-09 三菱重工業株式会社 波力発電装置
RU2431758C1 (ru) * 2010-02-16 2011-10-20 Государственное автономное учреждение Тюменской области "Западно-Сибирский инновационный центр" Способ получения электроэнергии и устройство для его реализации
CN101795050A (zh) * 2010-03-31 2010-08-04 哈尔滨工业大学 超导型高动态直接驱动电动作动器
EP2577045B1 (de) * 2010-05-28 2018-08-15 Seabased AB Wellenenergiegerät mit führungsvorrichtung
DK2577849T3 (da) * 2010-05-28 2021-03-08 Seabased Ab Statorramme til en lineær undervandsgenerator
TR201815182T4 (tr) * 2010-05-28 2018-11-21 Seabased Ab Sualtı kullanıma yönelik bir lineer jeneratör ve elektrik enerjisinin üretimine yönelik bir yöntem.
KR101227581B1 (ko) 2011-07-27 2013-01-29 주식회사 포에버그린 다연속 무부하 발전장치
US8907505B2 (en) * 2011-08-03 2014-12-09 Energy Harvesters Llc Method and apparatus for generating electrical energy
DE102011111352B4 (de) * 2011-08-29 2015-11-26 Otto-Von-Guericke-Universität Magdeburg Elektromotor mit eisenloser Wicklung
ES2425296B1 (es) * 2012-03-09 2014-09-02 Rosario CARRETERO BUENO Generador de émbolo vertical y desplazamiento alternativo con palas orientables y conversión de la energía mecánica en eléctrica a través de un dispositivo vertical solenoidal
US9624900B2 (en) * 2012-10-29 2017-04-18 Energystics, Ltd. Linear faraday induction generator for the generation of electrical power from ocean wave kinetic energy and arrangements thereof
KR101505713B1 (ko) 2012-11-23 2015-03-25 김기선 해수면의 파고에 따른 부력과 풍력과 태양광을 이용한 전력발전장치
US20140145444A1 (en) * 2012-11-28 2014-05-29 Industry-Academic Cooperation Foundation, Yonsei University Apparatus and method for wave power generation of underwater type
GB2510928B (en) * 2013-07-05 2015-09-09 William Dick A wave energy converter
US9647522B2 (en) * 2014-04-29 2017-05-09 Ishwar Ram Singh Linear induction generator using magnetic repulsion
US9853529B2 (en) 2014-04-29 2017-12-26 Ishwar Ram Singh Linear induction generator using magnetic repulsion
CN105098998B (zh) * 2014-05-16 2020-02-11 泰科电子(上海)有限公司 无线电力传输装置
MX365625B (es) * 2014-08-18 2019-06-10 Eddy Current Lp Ajuste de una relacion cinematica entre miembros.
CN104314735A (zh) * 2014-08-26 2015-01-28 长沙理工大学 一种使用双浮体结构的点吸收式波浪能转换装置
KR101656401B1 (ko) 2015-04-06 2016-09-22 충남대학교산학협력단 발전 장치
GB2540729B (en) * 2015-05-01 2018-03-21 Oxford Instruments Nanotechnology Tools Ltd Superconducting magnet
CN104976047A (zh) * 2015-06-19 2015-10-14 电子科技大学 一种应用超导线圈的直驱式海浪发电系统
CN105070455B (zh) * 2015-07-20 2017-03-22 中国船舶重工集团公司第七一〇研究所 一种径向开口的无矩螺线管磁场线圈
RS57986B1 (sr) * 2016-04-06 2019-01-31 Dragic Mile Uređaj za pretvaranje energije vodenih talasa u električnu energiju i postupak za njegovo postavljanje na mesto eksploatacije
JP6728523B2 (ja) * 2016-09-29 2020-07-22 株式会社三井Ｅ＆Ｓマシナリー 波力発電装置および波力発電装置の設置方法
KR101737510B1 (ko) 2017-02-10 2017-05-29 충남대학교 산학협력단 축방향 자화자석을 이용한 관 모양 영구자석 발전기
US10352290B2 (en) * 2017-02-14 2019-07-16 The Texas A&M University System Method and apparatus for wave energy conversion
US10601299B2 (en) * 2017-09-07 2020-03-24 American Superconductor Corporation High temperature superconductor generator with increased rotational inertia
EP3602760A1 (de) * 2017-11-14 2020-02-05 Tomorrow's Motion GmbH Magnetfeldschubantrieb
CN109915308A (zh) * 2017-12-01 2019-06-21 Z光谱创新设计有限责任公司 一种用于从海浪中产生能量的装置
US11331792B2 (en) * 2019-01-03 2022-05-17 Stmicroelectronics S.R.L. Electromagnetic actuator for artificial muscle fibers and a method of manufacture thereof
KR102177846B1 (ko) * 2019-11-21 2020-11-11 주식회사 포어시스 해양 부유체 플랫폼 연결용 파력발전장치
CN110821958B (zh) * 2019-12-06 2024-05-14 中国工程物理研究院机械制造工艺研究所 一种轴向可动静压气浮主轴
CN111237116B (zh) * 2020-01-14 2021-04-09 河海大学 非线性隐极水轮发电机水门与励磁联合调节方法和系统
US11441532B2 (en) * 2020-03-23 2022-09-13 Idaho State University Submerged oscillating water column energy harvester
IL278902B2 (en) * 2020-11-23 2023-05-01 Alsharif Mahmoud M.S. Marine wave energy
CN114649919B (zh) * 2020-12-18 2024-03-15 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） 多相超导直线电磁推进系统
JP7096613B1 (ja) 2021-04-08 2022-07-06 株式会社ナカムラ 波力発電システム
RU210032U1 (ru) * 2021-12-29 2022-03-25 федеральное государственное бюджетное образовательное учреждение высшего образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВО "НИУ "МЭИ") Линейный электрический генератор
CN114300218A (zh) * 2021-12-30 2022-04-08 深圳供电局有限公司 一种大气隙超低温电源变压器结构
JP7254318B1 (ja) 2022-08-01 2023-04-10 株式会社アントレックス 波力発電装置
JP7240692B1 (ja) 2022-08-01 2023-03-16 株式会社アントレックス 波力発電装置
US12068664B1 (en) * 2024-02-26 2024-08-20 Cyclazoom, LLC Energy generating system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020374A (en) * 1974-03-28 1977-04-26 Agence Nationale De Valorisation De La Recherche (Anvar) Superconducting electric motors
US5410199A (en) * 1989-10-26 1995-04-25 Doryokuro Kakunenryo Kaihatsu Jigyodan Vertically carrying superconduction motor
US20070164615A1 (en) * 2006-01-18 2007-07-19 Clive Lewis Tubular electrical machines

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5674082A (en) 1979-11-20 1981-06-19 Fujitsu Ltd Linear step motor
JPH0672594B2 (ja) * 1985-05-20 1994-09-14 大洋プラント株式会社 海水等の汲上装置
DE19542551A1 (de) 1995-11-15 1997-05-22 Oswald Elektromotoren Gmbh Synchronmotor
US5758911A (en) * 1996-02-07 1998-06-02 Northrop Grumman Corporation Linear motion wind driven power plant
US6020653A (en) * 1997-11-18 2000-02-01 Aqua Magnetics, Inc. Submerged reciprocating electric generator
GB2339975A (en) * 1998-07-27 2000-02-09 Asea Brown Boveri Rotating electric machine stator
US6580177B1 (en) * 1999-06-01 2003-06-17 Continuum Control Corporation Electrical power extraction from mechanical disturbances
US6153944A (en) * 1999-11-09 2000-11-28 Clark; Robert O. Apparatus for generating electricity from flowing fluids
DE10045957B4 (de) * 2000-09-16 2008-03-13 Volkswagen Ag Elektromagnetischer Linearaktuator
US6791205B2 (en) 2002-09-27 2004-09-14 Aqua Magnetics, Inc. Reciprocating generator wave power buoy
DE10306500A1 (de) * 2003-02-17 2004-08-26 Bayerische Motoren Werke Ag Aktive Fahrzeug-Radaufhängung mit einem Linearmotor
DE10315655A1 (de) 2003-04-04 2004-10-21 Fachhochschule Aachen Linearmotor mit Primärteil und Sekundärteil
SE523478C2 (sv) 2003-04-14 2004-04-20 Swedish Seabased Energy Ab vågkraftaggegat innefattande en elektrisk linjärgenerator försedd med elektromekaniskt dämpningsorgan
US7547999B2 (en) * 2003-04-28 2009-06-16 General Electric Company Superconducting multi-pole electrical machine
US7199481B2 (en) * 2003-11-07 2007-04-03 William Walter Hirsch Wave energy conversion system
EP1738071B1 (de) 2004-03-16 2015-08-19 Ocean Power Technologies, Inc. Antirotations-struktur für wellenenergiewandler
JP2007020270A (ja) * 2005-07-06 2007-01-25 Konica Minolta Medical & Graphic Inc リニアモータ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020374A (en) * 1974-03-28 1977-04-26 Agence Nationale De Valorisation De La Recherche (Anvar) Superconducting electric motors
US5410199A (en) * 1989-10-26 1995-04-25 Doryokuro Kakunenryo Kaihatsu Jigyodan Vertically carrying superconduction motor
US20070164615A1 (en) * 2006-01-18 2007-07-19 Clive Lewis Tubular electrical machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112994403A (zh) * 2021-04-26 2021-06-18 合肥工业大学 一种低涡流损耗的齿槽型圆筒直线电机的初级结构

Also Published As

Publication number Publication date
PT2132866E (pt) 2010-11-02
EP2132866B1 (de) 2010-08-04
CN101669270A (zh) 2010-03-10
WO2008116621A1 (de) 2008-10-02
DK2132866T3 (da) 2010-11-22
US20100117367A1 (en) 2010-05-13
RU2009133112A (ru) 2011-05-10
CN101663809A (zh) 2010-03-03
WO2008116622A1 (de) 2008-10-02
ZA200907483B (en) 2010-07-28
MX2009009157A (es) 2009-10-13
AU2008232023A1 (en) 2008-10-02
BRPI0808357A2 (pt) 2014-07-01
KR101075434B1 (ko) 2011-10-25
BRPI0808355A2 (pt) 2014-07-01
JP2010522530A (ja) 2010-07-01
AU2008232023B2 (en) 2010-08-26
AU2008232023A2 (en) 2009-10-08
KR101118178B1 (ko) 2012-03-20
DE502008001089D1 (de) 2010-09-16
CA2682158A1 (en) 2008-10-02
ES2349179T3 (es) 2010-12-28
KR20090114437A (ko) 2009-11-03
KR20090114438A (ko) 2009-11-03
US8154144B2 (en) 2012-04-10
EP2132865A1 (de) 2009-12-16
ATE476778T1 (de) 2010-08-15
EP2132866A1 (de) 2009-12-16
JP2010522529A (ja) 2010-07-01
CA2682241A1 (en) 2008-10-02
DE102007015168A1 (de) 2008-10-02

Similar Documents

Publication Publication Date Title
AU2008232023B2 (en) Linear machine having a primary part and a secondary part
US7489060B2 (en) Superconducting rotating machines with stationary field coils
US7492073B2 (en) Superconducting rotating machines with stationary field coils
US6066906A (en) Rotating machine having superconducting windings
US7741738B2 (en) Machine comprising a rotor and a superconducting rotor winding
WO2010016254A1 (ja) 超電導コイル及び磁場発生装置
NZ551653A (en) Linear or reciprocating electrical machines of tubular construction including superconducting windings
US8154157B2 (en) Primary part of a linear motor and linear motor therewith
JP2018524964A (ja) 回転電磁装置
US7750513B2 (en) Primary part of a linear motor and linear motor therewith
KR20100044393A (ko) 전기자코일 냉각수단이 구비된 초전도 모터
AU2019278398B2 (en) Rotor and machine with a cylindrical carrying body
JP6899022B1 (ja) モータ装置
US11728717B2 (en) Azimuthal or polodial flux machines
JP2008218717A (ja) 超電導コイル装置、誘導子型同期機、及び変圧装置
Zhang et al. Optimal design of an innovative high temperature superconducting generator with the evaporative cooling stator and the magnetic flux oriented rotor
KR20230062599A (ko) 분리 로터를 갖는 전기 기기

Legal Events

Date Code Title Description
AS Assignment

Owner name: ZENERGY POWER GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WIEZORECK, JAN;HAHN, INGOLF;BUHRER, CARSTEN;AND OTHERS;SIGNING DATES FROM 20090904 TO 20091002;REEL/FRAME:023798/0428

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE