WO2001001546A2 - Machine electrodynamique utilisant des superpoles - Google Patents

Machine electrodynamique utilisant des superpoles Download PDF

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Publication number
WO2001001546A2
WO2001001546A2 PCT/US2000/015589 US0015589W WO0101546A2 WO 2001001546 A2 WO2001001546 A2 WO 2001001546A2 US 0015589 W US0015589 W US 0015589W WO 0101546 A2 WO0101546 A2 WO 0101546A2
Authority
WO
WIPO (PCT)
Prior art keywords
coil
electrodynamic machine
superpoles
coil units
magnet
Prior art date
Application number
PCT/US2000/015589
Other languages
English (en)
Other versions
WO2001001546A3 (fr
Inventor
Elberto Berdut
Original Assignee
Elberto Berdut
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 Elberto Berdut filed Critical Elberto Berdut
Priority to AU79814/00A priority Critical patent/AU7981400A/en
Publication of WO2001001546A2 publication Critical patent/WO2001001546A2/fr
Publication of WO2001001546A3 publication Critical patent/WO2001001546A3/fr

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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

Definitions

  • the present invention relates to an electrodynamic machines utilizing magnetic superpole technology including electrodynamic machines that generate electric power in response to a mechanical input and to electrodynamic machines that generate a mechanical output in response to an appropriate electrical input .
  • Various classes of electrodynamic machines utilize permanent magnets to provide magnetic fields within the machine.
  • a conductive wire coil is moved through the magnetic field to generate electrical energy and, in still other types of machines, the permanent magnet (s) also function to provide a physical separation or suspension between parts.
  • various linear motors as used in magnetically levitated vehicles, such a rail -type trains utilize permanent magnets to levitate the vehicle relative to a trackway.
  • a superpole magnet developed by the inventor herein, has provided enhanced magnetic field characteristics.
  • a superpole structure is defined, for example, by magnet pieces, each with a N and a S pole, that are brought together with a magnetically permeable pole shoe (i.e., pole piece) with like poles of the magnets (i.e., N-N or S-S) engaging the pole shoe to provide the superpole effect .
  • a magnetically permeable pole shoe i.e., pole piece
  • like poles of the magnets i.e., N-N or S-S
  • the present invention provides an electrodynamic machine utilizing superpoles for generating electrical power in response to rotary or linear mechanical inputs.
  • coil units each having a wound inductive coil and a lamination stack are interposed between superpoles.
  • Each superpole includes magnets having their respective same-poles in a pole shoe.
  • EMF electromotive force
  • an electrodynamic machine that can produce electrical energy in response to a mechanical input or a mechanical output in response to a electrical input includes a coil assembly having a plurality of coil units radially aligned relative to an operating axis.
  • a magnet array surrounds the coil units and carries an equal plurality of radially aligned magnet poles that are positioned in an interdigitated relationship with the coil units of the coil assembly.
  • the magnet array is driven in an oscillatory manner about the operating axis to cause each magnet pole to move toward and closely approach its adjacent coil unit before reversing direction and then moving toward and closely approach the coil unit on the other lateral side of the magnet pole.
  • An electrical current is generated in each coil unit in response to the relative movement of the magnet poles and the coil units.
  • the electrodynamic machine is optionally provided with a shock absorbing or damping feature by which any undesired shock associated with the oscillatory nature of the preferred embodiment is dampened.
  • the coil units and magnet poles can be arranged in a linear manner with the magnet poles and coil units moved relative to one another to develop the desired electrical current .
  • FIG. 1 is a detail view of a superpole arrangement for use in an electrodynamic machine of the present invention
  • FIG. 2A and 2B illustrates the configuration of FIG. 1 in which the superpoles are moved relative to a coil unit to generate electrical power
  • FIG. 3A and 3B illustrates the configuration of FIG. 1 in which the coil unit is moved relative to adjacent superpoles to generate electrical power
  • FIG. 4 is a schematic elevational view of an electrodynamic machine in accordance with the present invention
  • FIG. 4A is a side elevational view of the electrodynamic machine of FIG. 4;
  • FIG. 5A is a detail view of a representative coil unit of the electrodynamic machine of FIG. 4;
  • FIG. 5B is a detail view of a representative superpole unit of the electrodynamic machine of FIG. 4;
  • FIG. 6 illustrates the parallel connected coil units of the electrodynamic machine of FIG. 4
  • FIG. 7 is a detail view of a commutator-type slip- ring.
  • FIG. 8 is a schematic representation of an electrodynamic machine utilizing the principles of the present invention in a linear arrangement. Best Mode for Carrying Out the Invention
  • An electrodynamic machine in accordance with the preferred embodiments of the present invention utilizes a basic superpole/coil configuration shown in its fundamental form in FIG. 1. As shown, two superpoles 10 are positioned on opposite sides a coil/core assembly 12. Each superpole 10 is defined by a first and a second bar magnet 14 , each having a north pole and a south pole indicated at N and S, respectively. The bar magnets 14 have their respective north poles N received in a pole shoe 16 that is fabricated from a high-permeability magnetic material to concentrate the magnetic field lines.
  • the bar magnets 14 can take the form, for example, of ferrous permanent magnets marketed under the MAGNEQUENCH tradename by Delco-Remy Division of the General Motors Corporation. In the alternative, the bar magnets 14 can be fabricated from a ceramic material, as is known.
  • the pole shoe 16 can be machined from bulk material or formed as a sintered piece from suitable starting material .
  • the coil/core assembly 12 includes a coil 18 wound from copper wire and a laminated core 20.
  • the core 20 is defined by a plurality of laminations arranged in a stacked configuration. The laminations function to concentrate the magnetic lines of force within the winding as is known in the art.
  • Preferred lamination materials include high-permeability silicon-iron or steel and/or high-permeability oriented-silicon iron or steel. While the superpole 10 of FIG. 1 has been shown in a north pole N to north pole N configuration, the opposite alignment is equally suitable, i.e., south pole S to south pole S.
  • the basic superpole/coil configuration of FIG. 1 generates an electrical output from the coil 18 by relative movement between the coil/core assembly 12 and the superpoles 10 by either moving the superpoles 10 relative to the coil/core assembly 12, or, conversely, moving the coil/core assembly 12 relative to the superpoles 10.
  • the two superpoles 10 can be both moved to the right in FIG. 2A (as indicated by the right-pointing arrows) and then to the left in FIG. 2B (as indicated by the left-pointing arrows) to cause the magnetic lines of force from the superpoles 10 to cut through the stationary winding 18 of the coil/core assembly 12 to develop an electromotive force (EMF) .
  • EMF electromotive force
  • the superpoles 10 can remain stationary and the coil/core assembly 12 caused to move.
  • FIG. 3A the coil/core assembly 12 is moved to the left and, in FIG. 3B, the coil/core assembly 12 is moved to the right.
  • FIGS. 4 and 4A and designated therein by the reference character 22 A practical and preferred embodiment of an electrodynamic machine in accordance with the present invention in shown in FIGS. 4 and 4A and designated therein by the reference character 22.
  • the electrodynamic machine 22 includes a relatively stationary coil assembly 24 carried on a support shaft 26 in a common plane with a magnet array 28 that is designed to oscillate about a shaft axis Ax through an angle (X to cause relative motion between the interdigitated coil/core assemblies 12 and superpoles 10.
  • the coil assembly 24 is defined by a mounting disc 32 having a concentrically located collar 34 through which the square support shaft 26 passes; in the embodiment shown, the support shaft 26 and the components carried thereon are stationary and not rotatable.
  • each coil/core assembly 12 is carried on a support spoke 36.
  • the laminated core 20 and its coil 18 are mounted near the distal end of its respective spoke 36.
  • the opposite sides of the laminated core 20 converge toward the axis Ax of the support shaft 26 to give each laminated core 20 a trapezoidal form when viewed from the perspective FIG. 4; the angle of convergence (j is dependent upon the total number of coil/core assemblies 12 and alternating superpoles 10 used in the embodiment.
  • FIG. 5A each coil/core assembly 12 is carried on a support spoke 36.
  • the laminated core 20 and its coil 18 are mounted near the distal end of its respective spoke 36.
  • the opposite sides of the laminated core 20 converge toward the axis Ax of the support shaft 26 to give each laminated core 20 a trapez
  • each spoke 36 and its coil/core assembly 12 are secured to the periphery of the mounting disc 32 by suitable fasteners, as indicated by the rivets 38.
  • Each spoke 36 is provided with a cut-out 40 on its opposite sides adjacent the mounting disc 32 to avoid interference with the distal ends of the adjacent superpoles 10 during operation of the electrodynamic machine 22.
  • the collar 34 is provided at the center of the mounting disc 32 and includes a square opening (unnumbered) through the support shaft 26 is passed.
  • the magnet array 28 is defined by a cylindrical support shell or case 42 from which the superpoles 10 are mounted in a radially aligned manner. As shown in the detail of FIG.
  • each superpole 10 is defined by first and second bar magnets 14 with their respective N poles received in a pole shoe 16 to provide a N superpole.
  • the opposite sides of each pole shoe 16 converge at an angle £ toward the axis Ax of the machine to give each pole shoe 16 a trapezoidal form when viewed from the perspective FIG. 4.
  • eight coil/core assemblies 12 are provided on the mounting disc 32 with an equi-angular spacing of 45 degrees, and, in a similar manner, eight superpoles 10 are mounted in the magnet array 28 with an equi-angular spacing of 45 degrees.
  • the magnet array 28 is supported for limited oscillatory motion about the machine axis Ax with the angular range CX sufficient to allow each superpole 10 to closely approach the laminated core 20 of the adjacent coil/core assembly 12 before reversing motion.
  • the magnet array 28 can be supported in a variety of ways to insure smooth oscillatory motion, including various types of bearing supports (not shown) .
  • the relationship between the magnet array 28 and the coil assembly 24 is such that these two components can be viewed as being in a common plane so that the various superpoles 10 are interdigitated with their respective coil/core assemblies 12.
  • the magnet array 28 is provided with a shock absorbing feature.
  • torque arms 44 extend from each side of the magnet array 28 and engage respective shock damping devices 46.
  • Each of the shock damping devices 46 includes a housing 48, a piston 50, an operating rod 52, and a damping member 54.
  • the damping member 54 is an air- sealed elastomer sphere. As the torque arm 44 forces the operating rod 52 into the elastomer damping member 54, the air sealed within the elastomer damping member 54 is compressed to provide a shock damping function.
  • various other types of shock absorbing devices including viscous damping devices and magnetic damping devices are suitable.
  • a representative magnetic damping arrangement is found in applicant's U.S. Patent No. 5,584,367 issued Dec. 17, 1996, the disclosure of which is incorporated herein by reference .
  • the magnet assembly 28 is caused to oscillate about the shaft axis Ax by a drive unit 56 that is driven by a conventional motor 58 (dotted-line illustration) .
  • the drive unit 56 includes a motor-driven eccentric-mount crank arm 60 that is pivotally connected to a radially upstanding arm 62 on the magnet assembly 28. As the right-end of the crank 60 orbits its center of rotation (unnumbered) , the left end of the crank arm 60 causes the magnet assembly 28 to oscillate about its axis Ax.
  • the drive unit 56 shown in FIG. 4 is of a schematic nature and other devices capable of providing the desired oscillatory motion are equally suitable.
  • each superpole 10 will move toward and closely approach its adjacent coil/core assembly 12, reverse its motion to the counterclockwise direction, and then move toward and closely approach the coil/core assembly 12 on its opposite side.
  • an alternating electric current will simultaneously flow in all the coil/core assemblies 12.
  • the electrodynamic machine 22 can be defined by plural sets of coil assemblies 24 and superpoles 10 axially spaced from one another on the support shaft 26.
  • the coil/core assemblies 12 can be connected in parallel to provide a common output; however and as is known in the art, sub-groups of the coil/core assemblies 12 can be connected in series with one another and with the sub-groups then connected in parallel to provide an appropriately desired output. Where a DC output is desired, the alternating current output of the various coil/core assemblies 12 can be rectified, for example, in a full-wave bridge rectifier (not shown) as desired.
  • FIG. 4 shows an electrodynamic machine 22 in which a reciprocating mechanical input is converted to an alternating current output .
  • the machine 22 can be driven by an appropriately alternating current to provide an oscillating mechanical output.
  • the coil assembly 24 has been shown as a stationary device while the magnet array 28 is caused to oscillate.
  • the support shaft 26 can be driven in an oscillatory manner while the magnet array 28 is held stationary. In this situation, some type of commutation between the now-oscillating coil assembly 24 is preferred. While different types of slip ring assemblies are possible, a suitable arrangement is shown in FIG.
  • each coil in which one side of each coil is connect to the conductive components of the coil array 24 (i.e., the equivalent of a common chassis ground) and the other side is connected to an axial-face slip ring 64 that is mounted on an appropriate insulator disc 66.
  • a conventional carbon-block brush (not shown) can then be used to effect connection with the slip ring 64.
  • the embodiment shown in FIG. 4 is configured in the same manner as a rotary electrodynamic machine.
  • the same principles employed in the rotary embodiment of FIG. 4 can be used in a linear machine.
  • the magnet assembly 28' is aligned as a linear array, and, in a similar manner, the coil assembly 24' is also aligned as a linear array with the individual superpoles 10 and coil/core assemblies 12 interdigitated with one another.
  • the superpoles and coil/core assemblies 12 are linearly spaced at a selected pitch distance P.
  • the magnet array 28' is subject to reciprocating motion in a manner analogous to the oscillatory motion of FIG.
  • each superpole 10 to closely approach its laterally adjacent coil/core assembly 12 before reversing its motion. Since the various superpoles 10 and coil/core assemblies 12 are arranged in a parallel alignment, the trapezoidal configurations of FIGS. 5A and 5B are not utilized in the embodiment of FIG. 8. As also can be appreciated, the linear arrangement can be easily extended in the linear direction. While not explicitly shown in FIG. 8, a mechanical or magnetic shock absorbing function, analogous to that shown in FIG. 4, can be incorporated into the FIG. 8 embodiment.
  • every magnetic pole is fabricated as a superpole; if desired, every other magnet can be a conventional magnet that alternate with the superpoles .
  • the present invention is well suited for those applications in which electric energy is desired in response to a oscillatory or reciprocating input.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

L'invention concerne une machine électrodynamique utilisant des superpôles, qui comprend un ensemble de bobine (24) relativement fixe porté par un axe de support (26), et un réseau d'aimants (28) conçus pour osciller autour de l'axe Ax de la machine selon un angle α, de façon à provoquer un déplacement relatif entre les ensembles bobine/noyau (12) interdigités et les superpôles (10). L'ensemble de bobine (24) comprend une pluralité de plaquettes (36) radialement alignées, chacune d'elles portant un ensemble bobine/noyau (12) défini par une bobine d'enroulement (18) et un noyau stratifié (20) associé. Le réseau d'aimants (18) se déplace au moyen d'un mouvement oscillatoire limité autour de l'axe de la machine, et est défini par une enveloppe ou un étui de support (42) cylindrique à partir duquel les superpôles (10) sont montés radialement alignés, ces superpôles (10) étant placés de manière interdigitée avec les ensembles bobine/noyau (12). Lorsqu'il fonctionne, l'ensemble d'aimants (28) oscille autour de l'axe Ax de la machine, de sorte que chaque superpôle (10) se déplace vers de l'ensemble bobine/noyau (12) qui lui est adjacent et s'approche tout près de celui-ci, puis inverse son déplacement, et se déplace vers de l'ensemble bobine/noyau (12) situé à l'opposé et s'approche tout près de celui-ci. De ce fait, un courant électrique alternatif s'écoule simultanément dans tous les ensembles bobine/noyau (12).
PCT/US2000/015589 1999-06-07 2000-06-07 Machine electrodynamique utilisant des superpoles WO2001001546A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU79814/00A AU7981400A (en) 1999-06-07 2000-06-07 Electrodynamic machine utilizing superpoles

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US13772799P 1999-06-07 1999-06-07
US60/137,727 1999-06-07
US58820700A 2000-06-06 2000-06-06
US09/588,207 2000-06-06

Publications (2)

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WO2001001546A2 true WO2001001546A2 (fr) 2001-01-04
WO2001001546A3 WO2001001546A3 (fr) 2001-07-26

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7172502B1 (en) 2005-07-07 2007-02-06 Stork Townsend Inc. Tool-less blade change shoe for a skinning machine
WO2007039733A1 (fr) * 2005-10-04 2007-04-12 Perpetuum Ltd. Generateur pour convertir une energie mecanique vibratoire en energie electrique
US8992025B2 (en) 2007-01-25 2015-03-31 Young Optics Inc. Rear projection apparatus and method for a rear projection apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3984707A (en) * 1973-07-13 1976-10-05 Mcclintock Richard D Spring return linear signal generator
US4500827A (en) * 1984-06-11 1985-02-19 Merritt Thomas D Linear reciprocating electrical generator
US5389844A (en) * 1990-11-06 1995-02-14 Clever Fellows Innovation Consortium, Inc. Linear electrodynamic machine
US5578877A (en) * 1994-06-13 1996-11-26 General Electric Company Apparatus for converting vibratory motion to electrical energy

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3984707A (en) * 1973-07-13 1976-10-05 Mcclintock Richard D Spring return linear signal generator
US4500827A (en) * 1984-06-11 1985-02-19 Merritt Thomas D Linear reciprocating electrical generator
US5389844A (en) * 1990-11-06 1995-02-14 Clever Fellows Innovation Consortium, Inc. Linear electrodynamic machine
US5578877A (en) * 1994-06-13 1996-11-26 General Electric Company Apparatus for converting vibratory motion to electrical energy

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7172502B1 (en) 2005-07-07 2007-02-06 Stork Townsend Inc. Tool-less blade change shoe for a skinning machine
WO2007039733A1 (fr) * 2005-10-04 2007-04-12 Perpetuum Ltd. Generateur pour convertir une energie mecanique vibratoire en energie electrique
US7999402B2 (en) 2005-10-04 2011-08-16 Perpetuum Ltd. Electromechanical generator for converting mechanical vibrational energy into electrical energy
US8992025B2 (en) 2007-01-25 2015-03-31 Young Optics Inc. Rear projection apparatus and method for a rear projection apparatus
US9581888B2 (en) 2007-01-25 2017-02-28 Young Optics Inc. Projection apparatus

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WO2001001546A3 (fr) 2001-07-26
AU7981400A (en) 2001-01-31

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