FI125225B - Linear electric generator and stirling motor with linear electric generator and wave power plant with linear generator - Google Patents

Linear electric generator and stirling motor with linear electric generator and wave power plant with linear generator Download PDF

Info

Publication number
FI125225B
FI125225B FI20135719A FI20135719A FI125225B FI 125225 B FI125225 B FI 125225B FI 20135719 A FI20135719 A FI 20135719A FI 20135719 A FI20135719 A FI 20135719A FI 125225 B FI125225 B FI 125225B
Authority
FI
Finland
Prior art keywords
frame portion
magnets
linear generator
linear
generator according
Prior art date
Application number
FI20135719A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20135719A (en
Inventor
Kari Kivelä
Original Assignee
Healherbz Ltd
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 Healherbz Ltd filed Critical Healherbz Ltd
Priority to FI20135719A priority Critical patent/FI125225B/en
Publication of FI20135719A publication Critical patent/FI20135719A/en
Application granted granted Critical
Publication of FI125225B publication Critical patent/FI125225B/en

Links

Classifications

    • 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
    • H02K35/02—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1869—Linear generators; sectional generators
    • H02K7/1876—Linear generators; sectional generators with reciprocating, linearly oscillating or vibrating parts

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Description

A LINEAR ELECTRICAL GENERATOR, A STIRLING MOTOR WITH A LINEAR ELECTRICAL GENERATOR AND A WAVE POWER PLANT WITH A LINEAR ELECTRICAL GENERATOR
FIELD OF THE INVENTION
The present invention relates to the field of generating electricity and to electrical generators, and more particularly to a linear electrical generator and a Stirling motor with a linear electrical generator.
BACKGROUND OF THE INVENTION
Within electrical generators a linear electrical generator is used to convert linear motion energy into electrical energy. A linear electrical generator may convert linear motion energy into alternating current (AC) electrical energy. In this case linear electrical generator may also be referred to as a linear alternator. A linear electrical generator is essentially a linear motor used as an electrical generator.
Like most electric motors and electric generators, the linear electrical generator works by the principle of electromagnetic induction. When a magnet moves in relation to a coil of wire, this changes the magnetic flux passing through the coil, and thus induces the flow of an electric current, which can be used to do work. A linear electrical generator is most commonly used to convert reciprocating (i.e. back-and-forth) translatory motion directly into electrical energy. The use of a back-and-forth translatory motion eliminates the need for a crank or linkage that would otherwise be required to convert a reciprocating motion to a rotary motion. A Stirling motor typically has a sealed cylinder with one part hot and the other cold. The working gas inside the engine (e.g. air, helium, or hydrogen) is moved by a mechanism from the hot side to the cold side. When the gas is on the hot side it expands and pushes up on a piston. When it moves back to the cold side it contracts. One of the most common types of Stirling engines are displacer type Stirling engines. The displacer type Stirling engine has one power piston and a displacer piston. In a displacer type Stirling engine the purpose of the single power piston and displacer is to “displace” the working gas at constant volume, and shuttle it between the expansion and the compression spaces through the series arrangement cooler, regenerator, and heater. A beta Stirling motor is a displacer type Stirling engine having a single power piston arranged within the same cylinder on the same shaft as a displacer piston. The displacer piston is a loose fit and does not extract any power from the expanding gas but only serves to shuttle the working gas from the hot heat exchanger to the cold heat exchanger. When in a beta Stirling motor the working gas is pushed to the hot end of the cylinder the working gas expands and pushes the power piston. When the working gas is pushed to the cold end of the cylinder it contracts and the momentum of the machine, usually enhanced by a flywheel, pushes the power piston the other way to compress the gas. The beta Stirling motor also avoids the technical problems of hot moving seals. A linear electrical generator has typically not been used in combination with a Stirling motor. The Stirling motor typically provides a relatively slow back-and-forth translatory motion thus also dictating the frequency for the linear electrical generator.
There are some prior art linear electrical generators having a set of ring type magnets arranged by turns. The ring type magnets of these prior art linear electrical generators are typically permanent magnet ferrite rings or permanent magnet neodymium rings arranged by turns. However, the ring magnets types of linear electrical generators have not been found suitable or feasible for slow back-and-forth translatory motion Stirling motors. The ring magnet type of linear electrical generators is structurally too complicated and the length of ring magnet type of linear electrical generators becomes too long.
Conventional prior art linear electrical generators have many problems and disadvantages. The prior art linear electrical generators are complicated and expensive to manufacture. Also the prior art linear electrical generators are very difficult to dimension especially for slow back-and-forth translatory motion Stirling motors.
As mentioned above, there are a lot of deficiencies in the current linear electrical generators. There is a clear demand in the market for a new type of linear electrical generator that would be better and more efficient than the current prior art linear electrical generator solutions. Likewise, there is a clear demand in the market for a new type of a Stirling motor with a linear electrical generator that would be better and more efficient than the current prior art a Stirling motor solutions.
BRIEF DESCRIPTION OF THE INVENTION
An object of the present invention is thus to provide a linear electrical generator and a Stirling motor with a linear electrical generator so as to overcome the above problems and to alleviate the above disadvantages.
The objects of the invention are achieved by a linear electrical generator, which linear electrical generator comprises: - a translator arranged for back-and-forth movement in a translatory motion, said translator having a frame portion, which frame portion has at least two magnets having an essentially ribbon type surface arranged on the frame portion, and - a stator comprising at least one essentially ribbon type electrical winding arranged close to said back-and-forth moving translator.
Preferably, said linear electrical generator further comprises a shaft portion to which shaft portion said frame portion is fixed. Alternatively, said frame portion is a shaft portion of the translator in itself.
Preferably, said frame portion is a cylindrical frame portion. Further preferably, said cylindrical frame portion has at least two magnets having a helical ribbon type surface, said magnets arranged on the cylindrical frame portion, and that said at least one essentially ribbon type electrical winding of said stator are at least one helical ribbon type electrical winding.
Preferably, said frame portion is a polygonal frame portion or a square pipe frame portion. Further preferably, said frame portion has at least two magnets having an angularly turned ribbon type surface, said magnets arranged at the angularly turned side surfaces of the said frame portion, and that said at least one essentially ribbon type electrical winding of said stator are at least one angularly turned ribbon type electrical winding.
Further preferably, said at least two magnets having an angularly turned ribbon type surface are comprised of bevel magnet elements arranged at each side of the polygonal frame portion, said bevel magnet elements forming at least two magnets having an essentially ribbon type surface on the frame portion. Further preferably, said bevel magnet elements form twelve magnets having an essentially ribbon type surface on the frame portion.
Furthermore, the objects of the invention are achieved by a Stirling motor with a linear electrical generator, which linear electrical generator comprises: - a translator arranged for back-and-forth movement in a translatory motion, said translator having a frame portion, which frame portion has at least two magnets having an essentially ribbon type surface arranged on the frame portion, and - a stator comprising at least one essentially ribbon type electrical winding arranged close to said back-and-forth moving translator.
Furthermore, the objects of the invention are achieved by a wave power plant with a linear electrical generator, which linear electrical generator comprises: - a translator arranged for back-and-forth movement in a translatory motion, said translator having a frame portion, which frame portion has at least two magnets having an essentially ribbon type surface arranged on the frame portion, and - a stator comprising at least one essentially ribbon type electrical winding arranged close to said back-and-forth moving translator.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 shows one embodiment of a translator for a linear electrical generator according to the present invention;
Figure 2 shows another embodiment of a frame portion of a translator for a linear electrical generator according to the present invention.
In the following, the invention will be described in greater detail by means of preferred embodiments with reference to the accompanying drawings of Figures 1 to 2.
DETAILED DESCRIPTION OF THE INVENTION
Figure 1 shows one embodiment of a translator for a linear electrical generator according to the present invention. The translator 1 for a linear electrical generator according to the present invention is arranged for back-and-forth movement in a translatory motion. Said translator 1 for a linear electrical generator according to the present invention may comprise a shaft portion 2. The translator 1 according to the present invention has a frame portion 3, which frame portion 3 may be fixed to the shaft portion 2 of the translator 1. Furthermore, the frame portion 3 of the translator 1 has at least two magnets 4, 5 having an essentially ribbon type surface arranged on the frame portion 3.
In Figure 1 the translator 1 according to the present invention has a cylindrical frame portion 3 fixed to the shaft portion 2 of the translator 1. The cylindrical frame portion 3 of the translator 1 has at least two magnets 4, 5 having a helical ribbon type surface arranged on the cylindrical frame portion 3.
The translator 1 according to the present invention is arranged to move back-and-forth in a translatory motion within the stator of the linear electrical generator, thus converting the kinetic energy to electrical energy. The stator of the linear electrical generator according to the present invention comprises at least one essentially ribbon type electrical winding 6-8 arranged close to the back-and-forth moving translator 1.
In Figure 1 the stator according to the present invention comprises at least one helical ribbon type electrical winding 6-8 arranged close to the back-and-forth moving translator 1. The at least two magnets 4, 5 having a helical ribbon type surface arranged on the cylindrical frame portion 3 of the translator 1 create an alternating magnetic field which penetrates the at least one helical ribbon type electrical winding 6-8 of the stator.
Figure 2 shows another embodiment of a frame portion of a translator for a linear electrical generator according to the present invention. The translator 9 for a linear electrical generator according to the present invention comprises a shaft portion arranged to move back-and-forth in a translatory motion. The translator 9 according to the present invention may have a frame portion 10 fixed to the shaft portion of the translator 9. The said frame portion 10 may also be a shaft portion of the translator 9 in itself as shown in Figure 2. Furthermore, the frame portion 10 of the translator 9 has at least two magnets 11-14 having an essentially ribbon type surface arranged on the frame portion 10.
In Figure 2 the translator 9 according to the present invention has a polygonal frame portion 10, such as e.g. a square pipe frame portion 10 fixed to the shaft portion of the translator 9. The said polygonal frame portion 10 of the translator 9 has at least two magnets 11-14 having an angularly turned ribbon type surface, said magnets 11-14 being arranged at the angularly turned side surfaces of the polygonal frame portion 10. E.g. the square pipe frame portion 10 of the translator 9 may have at least two magnets 11-14 having an angularly turned ribbon type surface, said magnets 11-14 being arranged at the four angularly turned side surfaces of the square pipe frame portion 10.
The said at least two magnets 11-14 having an angularly turned ribbon type surface may be comprised of bevel magnet elements 11-14 arranged at each side of the polygonal frame portion 10, said bevel magnet elements 11-14 forming at least two magnets 11-14 having an essentially ribbon type surface on the frame portion 10. In Figure 2 the said bevel magnet elements 11-14 are arranged at each side of the square pipe frame portion 10, said bevel magnet elements 11-14 forming at least two magnets 11-14 having an essentially ribbon type surface, for example twelve magnets 11-14 having an essentially ribbon type surface on the square pipe frame portion 10.
The translator 9 according to the present invention is arranged to move back-and-forth in a translatory motion within the stator, thus converting the kinetic energy to electrical energy. The stator according to the present invention comprises at least one essentially ribbon type electrical winding arranged close to the back-and-forth moving translator 9.
In Figure 2 the stator according to the present invention comprises at least one angularly turned ribbon type electrical winding arranged close to the back-and-forth moving translator 9. The at least two magnets 11-14 having an angularly turned ribbon type surface, said magnets 11-14 being arranged at the surface of the cylindrical frame portion 10 of the translator 9 create an alternating magnetic field which penetrates the at least one angularly turned ribbon type electrical winding of the stator.
The said at least two magnets 4, 5, 11-14 having an essentially ribbon type surface arranged on the frame portion 3, 10 of the translator 1, 9 create a very strong alternating magnetic field which penetrates the said very long at least one essentially ribbon type electrical winding 6-8 of the stator.
With the help of the linear electrical generator according to the present invention one can achieve better efficiency in comparison to linear electrical generators according to prior art. The linear electrical generator according to the present invention is also very compact in size, volume and weight in comparison to complicated linear electrical generator arrangements according to prior art. Furthermore, the linear electrical generator according to the present invention is very easy to use and very reliable in use due to the considerably robust structure.
The linear electrical generator according to the present invention may be utilized in any kind of generator arrangement where a reciprocating back-and-forth translatory motion is to be converted into electrical energy. The linear electrical generator according to the present invention may very well be used in combination with a Stirling motor. The linear electrical generator ac cording to the present invention is easily suited for converting the relatively slow back-and-forth translatory motion of a Stirling motor into electrical energy.
The linear electrical generator according to the present invention may very well be used in combination with wave power plants. In a typical wave power plant the slow movement of the waves on the ocean surface is transferred into a slow back-and-forth translatory motion of a translator of a linear electrical generator in the bottom ocean seabed with the help of e.g. buoy arrangement. The linear electrical generator according to the present invention is easily suited for converting the relatively slow back-and-forth translatory motion of a wave power plant into electrical energy.
It will be obvious to a person skilled in the art that, as the technology advances, the inventive concept can be implemented in various ways. The invention and its embodiments are not limited to the examples described above but may vary within the scope of the claims.

Claims (9)

1. Lineaarigeneraattori, tunnettu siitä, että mainittu lineaari-generaattori käsittää: - muuntimen (1), (9), joka on järjestetty edestakaista translatorista liikettä varten, jossa mainitussa muuntimessa (1), (9) on runko-osuus (3), (10), jossa runko-osuudessa (3), (10) on vähintään kaksi magneettia (4), (5), (11-14), joilla on kierteinen nauhamainen pinta tai kulmittain kierretty nauhamainen pinta, mainitun vähintään kahden magneetin (4), (5), (11-14) ollessa järjestetty runko-osuudelle (3), (10), ja - staattorin, joka käsittää vähintään yhden kierteisen nauhamaisen tai vähintään yhden kulmittain kierretyn sähkökäämin (6-8), joka on järjestetty mainitun edestakaisin liikkuvan muuntimen (1), (9) lähelle.Linear generator, characterized in that said linear generator comprises: - a transducer (1), (9) arranged for a reciprocating translational movement, said transducer (1), (9) having a frame portion (3), (10), wherein the body portion (3), (10) has at least two magnets (4), (5), (11-14) having a helical ribbon surface or an angularly rotated ribbon surface, said at least two magnets (4) ), (5), (11-14) being arranged on the body portion (3), (10), and - a stator comprising at least one threaded ribbon or at least one angularly twisted electric winding (6-8) arranged on said housing. near and back to the moving converter (1), (9). 2. Patenttivaatimuksen 1 mukainen lineaarigeneraattori, tunnet-t u siitä, että mainittu lineaarigeneraattori käsittää lisäksi akseliosuuden (2), johon akseliosuuteen (2) mainittu runko-osuus (3), (10) on kiinnitetty.Linear generator according to claim 1, characterized in that said linear generator further comprises a shaft portion (2) to which said frame portion (3) (10) is attached. 3. Patenttivaatimuksen 1 mukainen lineaarigeneraattori, tunnettu siitä, että mainittu runko-osuus (3), (10) on itsessään muuntimen (1), (9) akseliosuus (10).Linear generator according to claim 1, characterized in that said frame portion (3), (10) is itself an axis portion (10) of the converter (1), (9). 4. Minkä tahansa patenttivaatimuksen 1 - 3 mukainen lineraari-generaattori, tunnettu siitä, että mainittu runko-osuus (3) on sylinterimäi-nen runko-osuus (3), jossa sylinterimäisessä runko-osuudessa (3) on vähintään kaksi magneettia (4), (5), (11-14), joilla on kierteinen nauhamainen pinta järjestettynä sylinterimäiselle runko-osuudelle (3); ja että mainittu vähintään yksi oleellisesti nauhamainen mainitun staattorin sähkökäämi (6-8) on vähintään yksi kierteinen nauhamainen sähkökäämi (6-8).Linear generator according to any one of claims 1 to 3, characterized in that said frame part (3) is a cylindrical frame part (3), wherein the cylindrical part (3) has at least two magnets (4). , (5), (11-14) having a helical strip-like surface arranged on a cylindrical body portion (3); and that said at least one substantially ribbon-like electric winding (6-8) of said stator is at least one helical-ribbon electric winding (6-8). 5. Minkä tahansa patenttivaatimuksen 1 - 3 mukainen lineraari-generaattori, tunnettu siitä, että mainittu runko-osuus (10) on polygonaali-nen runko-osuus (10) tai nelikulmainen putkirunko-osuus (10), jolla runko-osuudella (10) on vähintään kaksi magneettia (11-14), joilla on kulmittain kierretty nauhamainen pinta, mainitut magneetit järjestettynä mainitun runko-osuuden (10) kulmittain kierretyille sivureunoille, ja että mainittu vähintään yksi oleellisesti nauhamainen mainitun staattorin sähkökäämi (6-8) on vähintään yksi kulmittain kierretty nauhamainen sähkökäämi (6-8).Linear generator according to any one of claims 1 to 3, characterized in that said frame portion (10) is a polygonal frame portion (10) or a rectangular tubular frame portion (10), wherein the frame portion (10) at least two magnets (11-14) having an angularly twisted strip-like surface, said magnets arranged on the angledly-twisted side edges of said frame portion (10), and wherein said at least one substantially ribbon-like electrical winding (6-8) of said stator twisted ribbon electric coil (6-8). 6. Patenttivaatimuksen 5 mukainen lineaarigeneraattori, tunnettu siitä, että mainitut vähintään kaksi magneettia (11-14), joilla on kulmittain kierretty nauhamainen pinta, koostuvat viistoista magneettielementeistä (11- 14), jotka on järjestetty polygonaalisen runko-osuuden (10) jokaiselle puolelle, mainittujen viistojen magneettielementtien (11-14) muodostaessa vähintään kaksi magneettia (11-14), joilla on oleellisen nauhamainen pinta runko-osuudella (10).Linear generator according to Claim 5, characterized in that said at least two magnets (11-14) having an angularly twisted strip-like surface consist of oblique magnetic elements (11-14) arranged on each side of the polygonal body portion (10), said sloping magnetic elements (11-14) forming at least two magnets (11-14) having a substantially strip-like surface on the body portion (10). 7. Patenttivaatimuksen 6 mukainen lineaarigeneraattori, tunnet-t u siitä, että mainitut viistot magneettielementit (11-14) muodostavat kaksitoista magneettia (11-14), joilla on oleellisesti nauhamainen pinta runko-osuudella (10).Linear generator according to claim 6, characterized in that said oblique magnetic elements (11-14) form twelve magnets (11-14) having a substantially strip-like surface with a frame portion (10). 8. Stirling-moottori, jossa on minkä tahansa patenttivaatimuksen 1 - 7 mukainen lineaarigeneraattori.A Stirling motor having a linear generator according to any one of claims 1 to 7. 9. Aaltovoimala, jossa on minkä tahansa patenttivaatimuksen 1 - 7 mukainen lineaarigeneraattori.A wave power plant having a linear generator according to any one of claims 1 to 7.
FI20135719A 2013-07-01 2013-07-01 Linear electric generator and stirling motor with linear electric generator and wave power plant with linear generator FI125225B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI20135719A FI125225B (en) 2013-07-01 2013-07-01 Linear electric generator and stirling motor with linear electric generator and wave power plant with linear generator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20135719 2013-07-01
FI20135719A FI125225B (en) 2013-07-01 2013-07-01 Linear electric generator and stirling motor with linear electric generator and wave power plant with linear generator

Publications (2)

Publication Number Publication Date
FI20135719A FI20135719A (en) 2015-01-02
FI125225B true FI125225B (en) 2015-07-15

Family

ID=52463457

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20135719A FI125225B (en) 2013-07-01 2013-07-01 Linear electric generator and stirling motor with linear electric generator and wave power plant with linear generator

Country Status (1)

Country Link
FI (1) FI125225B (en)

Also Published As

Publication number Publication date
FI20135719A (en) 2015-01-02

Similar Documents

Publication Publication Date Title
Oprea et al. Permanent magnet linear generator for renewable energy applications: Tubular vs. four-sided structures
CN111181259B (en) Linear rotation permanent magnet motor with E-shaped stator structure
JP6202349B2 (en) Power generator
CN100568685C (en) DC reciprocating motor
CN104811008A (en) Cylindrical permanent magnet flux-switching linear oscillation motor
CN109653898B (en) Electric feedback opposed free piston Stirling generator
CN106050537A (en) Wave energy power generation device
CN101882819A (en) Rectilinear cylindrical switching magnetic flux permanent magnet generator
CN201956761U (en) Linear cylinder type switched flux permanent magnet generator
CN104319975A (en) Single-groove unipolar cylindrical moving-magnet linear alternating-current generator
CN113067421A (en) Field modulation type outer rotor vernier motor adopting direct-current superconducting excitation and application
FI125225B (en) Linear electric generator and stirling motor with linear electric generator and wave power plant with linear generator
Abdalla et al. Design and modeling of a single-phase linear permanent magnet motor for household refrigerator applications
Jiang et al. Design and modelling of a novel linear electromagnetic vibration energy harvester
Abdalla et al. Optimal design of a single-slotted permanent-magnet linear generator for wave energy conversion
CN106609706A (en) Electromagnetic rotor engine
CN100502209C (en) Piston internal-combustion linear generator
RU134369U1 (en) LINEAR GENERATOR ON PERMANENT MAGNETS
RU175679U1 (en) ELECTRIC GENERATING DEVICE
CN101976929B (en) Permanent magnet linear generator with hybrid magnetic circuits
Oros et al. Linear generator for a free piston stirling engine
CN206753758U (en) A kind of stirling generator based on dielectric elastomer
CN113285578B (en) Static seal excitation single-loop superconducting magnetic gear motor and application
Sugiyantoro et al. Slot-less Tubular Linear Permanent Magnet Generator Using Halbach-Array Excitation
CN210724526U (en) Linear oscillation motor

Legal Events

Date Code Title Description
PC Transfer of assignment of patent

Owner name: HEALHERBZ LTD

FG Patent granted

Ref document number: 125225

Country of ref document: FI

Kind code of ref document: B

MM Patent lapsed