WO1997024793A1 - Moteur a courant cc d'une grande efficacite et possedant des caracteristiques de type generateur et volant - Google Patents

Moteur a courant cc d'une grande efficacite et possedant des caracteristiques de type generateur et volant Download PDF

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Publication number
WO1997024793A1
WO1997024793A1 PCT/US1995/017031 US9517031W WO9724793A1 WO 1997024793 A1 WO1997024793 A1 WO 1997024793A1 US 9517031 W US9517031 W US 9517031W WO 9724793 A1 WO9724793 A1 WO 9724793A1
Authority
WO
WIPO (PCT)
Prior art keywords
coils
motor
magnets
rotor
mode
Prior art date
Application number
PCT/US1995/017031
Other languages
English (en)
Inventor
Scott E. Gossler
Eugene R. Murray
Original Assignee
H.E.F.O., Inc.
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 H.E.F.O., Inc. filed Critical H.E.F.O., Inc.
Priority to PCT/US1995/017031 priority Critical patent/WO1997024793A1/fr
Priority to AU46481/96A priority patent/AU4648196A/en
Publication of WO1997024793A1 publication Critical patent/WO1997024793A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems

Definitions

  • This invention is concerned with a high efficiency, multiphasic DC motor, with rotor flywheel, that operates with generator and flywheel characteristics, that simultaneously captures and stores inductive kickback and back emf, in addition to collecting other generated power such as regenerative braking.
  • the motor has an efficiency of about 80% at 100 RPM rising to 95% at 3000 RPM. It is pancake shaped with sufficient mass in the dual rotors to store kinetic energy as a flywheel. Twelve permanent magnet pairs are mounted in the periphery of the dual rotors and fifteen air core coils are in the periphery of the stator, which is a designed imbalance that positions adjoining magnets at different degrees of distance from the coils ahead and the coils behind. The inductive kickback, back emf and other generated power are stored for future use in a power pack of rechargeable batteries and capacitor banks. Torque and RPM are controlled and varied by a microprocessor and algorithm.
  • U.S. Patent No. 4,330,742 to Reimers May 18, 1982 "Circuitry for Recovering Electrical Energy with an Electric Vehicle DC Propulsion Motor When Braking” describes a DC propulsion motor for a vehicle that becomes a generator by using the motor's kinetic energy when the vehicle is braked.
  • U.S. Patent No. 4,055,789 to Lasater October 25, 1977 for "Battery Operated Motor With Back EMF Charging” describes a motor driven by electric current from a charged battery during a first time interval. During a second time interval the charged battery is disconnected and a discharged battery is connected to the motor, which is operating as a generator as it winds down.
  • Electric Vehicle Drive System describes an electric vehicle power system that uses a battery to drive electric drive motors, a flywheel to drive a generator during peak loads and a microprocessor to control the system, with the battery and flywheel recharged during deceleration or braking, or by a charger when idle.
  • DC motors that individually capture, collect, store and use all forms of generated power, inductive kickback, back emf and regenerative braking, etc. are not described in prior art DC motors.
  • U.S. Patent No. 4,438,362 to Brown March 20, 1984 “Self Starting DC Motor with Permanent Magnets of Varied Magnetic Strength” describes a disk shaped motor with annular magnets in the periphery and a coil in the center with all magnets reacting together as the coil is energized and de-energized.
  • U.S. Patent No. 4,551,645 to Takahashi, et al Nov 5, 1985 for "Disk Type Brushless Motor” describes a motor with field magnets of two or more poles and loop- like armature windings in quantities of two or more. It is concerned with not overlapping the armature windings.
  • Patent No. 3,890,548 to Gray June 17, 1975 “Pulsed Capacitor » Discharge Engine” describes a motor that uses storage batteries and a capacitor bank.
  • the batteries charge the capacitor bank, which discharge through oppositely polled coils to drive, repel, the rotor. Secondary batteries are charged by inductive kickback and with the primary batteries appear to be the power source for the "engine”.
  • the directing of power through the coils to both pull and push the permanent magnets in the rotors in the same direction is not described in prior art DC motors.
  • the applicant's DC motor is multiphasic as [1)] it is designed and built with -t- ,an integer equal to two or greater, multiple phases and [2)] while operating it can utilize one or more of the multiple phases, depending on the load requirements, [and] as directed by the specially designed microprocessor with proprietary algorithm. Multiphasic DC motors are not described in prior art DC motors.
  • the subject invention describes a highly efficient pancake shaped multiphasic DC motor with dual flywheel rotors that operates with generator characteristics that simultaneously captures and stores inductive kickback and back emf, in addition to collecting generated power, regenerative braking, etc.
  • RPM, torque, regenerative braking, inductive kickback and back emf are all variable and controlled by a microprocessor and algorithm. Batteries and capacitor banks are used as a rechargeable power pack. At 100 RPM to 3,000 RPM, this high efficiency DC motor with generator and flywheel characteristics has an efficiency of about 80% to 95%.
  • the prototype is about 14 inches in diameter by 3 inches in height with twelve permanent magnets mounted in the periphery of two outer rotor disks and fifteen air core coils in the periphery of an inner stator disk.
  • the magnets are mounted with north and south poles reversed for every other magnet.
  • the air core coils are activated in equilateral positioned groups of three, while pairs of magnets in the outer rotors rotate past the coils.
  • the flywheel rotors 144 operate together as a single parallel unit secured to the central shaft
  • flywheel rotors develop and store sufficient kinetic energy to
  • Figure 1 shows a schematic and block diagram of the power electronics, rectifiers, H-bridges, coil connections microprocessor.
  • Figure 2 shows a plan view of the positions of twelve magnets, relative to fifteen coils during a period of revolution of the rotors containing the magnets.
  • Figure 3 shows a conceptual cut-away view of the stator and the dual flywheel rotors, with the relative positions of the coils and magnets, plus a sectional view of the stator and the dual rotors.
  • the high efficiency multiphasic DC motor is a pancake shaped high efficiency DC motor with dual flywheel rotors that operates with generator characteristics that simultaneously captures and stores inductive kickback and back emf, in addition to collecting generated power, regenerative braking, etc.
  • RPM and torque are both variable and controlled by the microprocessor 1.
  • the high efficiency DC motor uses a power pack 2 as a rechargeable power source, which is composed of a capacitor bank and batteries. At normal operating speeds of about 100 RPM to 3,000 RPM the motor has an efficiency of about 80% to 95%.
  • the preferred embodiment of the high efficiency DC motor is composed of one stator 4, containing the coils, that is fixed to a stationary housing; sandwiched between dual disk shaped flywheel rotors 3, containing the magnets, that are mounted on a central shaft 5 and operate together as single parallel unit.
  • the high efficiency DC motor in its preferred embodiment, has twelve pairs of one inch diameter by three-quarters inch high magnets 6, mounted equidistant apart in the periphery of the two rotors, with north and south poles reversed for every other magnet.
  • permanent magnets 6 are made of neodymiu (NdFeB) and the air core coils 7 are wound with wire of high conductivity. When a north pole is induced in an air core coil 7, it will efficiently repel the north pole of the neodymium magnet 6 as the magnet passes over the energized air core coil 7.
  • the coil contained an iron core and was energized with same amount of power as used to energize an air core coil 7, the north pole of a neodymium magnet 6 will attract the iron core of the coil, even though it has an induced north pole. Only by increasing the power to the iron cored coil will the neodymium magnet be repulsed. This is an inefficient use of power.
  • the high efficiency multiphasic DC motor also has certain generator characteristics. It induces, captures and stores inductive kickback and back emf, as well as collecting generated power such as regenerative braking. During any degree of rotation of the rotors, one or more groups of magnets 6 are approaching or departing de- energized coils 7.
  • the operation of the high efficiency multiphasic DC motor is controlled by a specially designed microprocessor 1 , an absolute position encoder la, sensors 9a and 9b and power electronics 10a and 10b in a manner well known to those skilled in the art.
  • the coils 7 are sequentially energized or pulsed, through the motor H-bridges, by the microprocessor 1 in the proper order and polarity.
  • Generated power and inductive kickback are collected by full wave bridge rectifiers 1 1 plus power electronics and stored in the power pack 2. This power is later fed sequentially through H-bridges 12 into air core coils 7, being energized for their motor phase.
  • the motor is also designed to utilize a dual flywheel rotor that will develop and store enough kinetic energy to provide high torque output and inertia to sustain, smooth out and hold the RPM developed by the rotors.
  • the flywheel design of the disk shaped rotors plus the weight of the magnets 6 in the periphery of the rotors provides adequate mass to store kinetic energy. This invention has been described in terms of a preferred embodiment.
  • D. Electromagnetic coils can be used instead of permanent magnets.
  • the dimensions, weight and shape of the high efficiency DC motors, its magnets and its coils are all variable. They can vary from a fraction of inches to many feet and from a fraction of ounces to hundreds of pounds and they can be used in a variety of shapes.
  • F. The high efficiency DC motors will operate if the north and south pole pairs of the permanent magnets are not aligned in the same polarity or if the polarity is not reversed for every other magnet pair.
  • the number of magnets and coils used can be reversed, increased, decreased or varied, depending on design requirements.
  • the magnets can be made of iron, conductive materials or super conductors, as can the coils.
  • the coils can be wire wound, 286 ribbon wound or solid state. Rectifying devices other then full wave 287 bridge rectifiers can also be utilized.
  • Additional magnets can also be mounted on the radii of the 12
  • the high efficiency DC motor system can utilize advanced chip
  • the power pack may

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

Cette invention concerne un moteur à courant CC de type multiphase et d'une grande efficacité, lequel moteur fait appel à une commutation électronique sans balais afin de mettre en phase les forces attractive et répulsive entre les aimants permanents (6) du rotor (3) et les bobines à air enroulées (7) du stator (4). Le nombre d'aimants (6) diffère du nombre de bobines (7), ce qui permet d'obtenir un déséquilibre voulu de sorte qu'une mise sous tension adéquate entraîne une rotation et un couple dans le rotor (3) à double volant du moteur. La commutation électronique permet de récupérer simultanément le retour inducteur et la force électromotrice inverse lors de la phase du moteur, ainsi que de déconnecter les phases d'attraction et de répulsion lors du freinage de récupération, etc. Toute l'énergie ainsi générée est renvoyée vers le groupe d'alimentation électrique (2) où elle est stockée dans des batteries et des condensateurs. Les batteries rechargeables (2) et les condensateurs du groupe d'alimentation électrique (2) représentent la source d'alimentation électrique destinée au fonctionnement du moteur. Le système rotatif possède une masse appropriée qui permet à l'énergie cinétique de la rotation d'aplanir les moments d'impulsions engendrés par l'attraction et la répulsion des bobines (7) et des aimants (6), et d'assurer ainsi une rotation continue du rotor (3) à double volant. La commutation électronique, la faible perte d'hystérésis dans les bobines à air (7), la configuration fuselée du rotor (3) qui permet de réduire les pertes de bobinage, ainsi que la récupération des courants générés dans les bobines à air (7), contribuent tous à la grande efficacité de ce moteur électrique à courant CC.
PCT/US1995/017031 1995-12-29 1995-12-29 Moteur a courant cc d'une grande efficacite et possedant des caracteristiques de type generateur et volant WO1997024793A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US1995/017031 WO1997024793A1 (fr) 1995-12-29 1995-12-29 Moteur a courant cc d'une grande efficacite et possedant des caracteristiques de type generateur et volant
AU46481/96A AU4648196A (en) 1995-12-29 1995-12-29 High efficiency dc motor with generator and flywheel characteristics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1995/017031 WO1997024793A1 (fr) 1995-12-29 1995-12-29 Moteur a courant cc d'une grande efficacite et possedant des caracteristiques de type generateur et volant

Publications (1)

Publication Number Publication Date
WO1997024793A1 true WO1997024793A1 (fr) 1997-07-10

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AU (1) AU4648196A (fr)
WO (1) WO1997024793A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1406367A1 (fr) * 2002-10-01 2004-04-07 HILTI Aktiengesellschaft Onduleur alimenté par batterie
FR2848739A1 (fr) * 2002-12-12 2004-06-18 Renault Sa Dispositif d'entrainement en rotation
WO2005034317A1 (fr) * 2003-10-03 2005-04-14 Philip Arden Wood Moteur c.c.
WO2006012690A1 (fr) * 2004-08-03 2006-02-09 Precursor Engineering Pty Ltd Alternateur de stator chargé
FR2902945A1 (fr) * 2006-06-27 2007-12-28 Valeo Equip Electr Moteur Procede de recuperation d'energie electrique dans un vehicule a freinage recuperatif

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5451881A (en) * 1993-12-10 1995-09-19 Curtis Instruments, Inc. Method and means for adjusting battery monitor based on rate of current drawn from the battery

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5451881A (en) * 1993-12-10 1995-09-19 Curtis Instruments, Inc. Method and means for adjusting battery monitor based on rate of current drawn from the battery

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1406367A1 (fr) * 2002-10-01 2004-04-07 HILTI Aktiengesellschaft Onduleur alimenté par batterie
FR2848739A1 (fr) * 2002-12-12 2004-06-18 Renault Sa Dispositif d'entrainement en rotation
WO2005034317A1 (fr) * 2003-10-03 2005-04-14 Philip Arden Wood Moteur c.c.
WO2006012690A1 (fr) * 2004-08-03 2006-02-09 Precursor Engineering Pty Ltd Alternateur de stator chargé
FR2902945A1 (fr) * 2006-06-27 2007-12-28 Valeo Equip Electr Moteur Procede de recuperation d'energie electrique dans un vehicule a freinage recuperatif
WO2008000982A2 (fr) * 2006-06-27 2008-01-03 Valeo Equipements Electriques Moteur Procede de recuperation d'energie electrique dans un vehicule a freinage recuperatif
WO2008000982A3 (fr) * 2006-06-27 2008-02-14 Valeo Equip Electr Moteur Procede de recuperation d'energie electrique dans un vehicule a freinage recuperatif
US8092338B2 (en) 2006-06-27 2012-01-10 Valeo Equipements Electriques Moteur Method for recovering electrical energy in vehicle with regenerative braking

Also Published As

Publication number Publication date
AU4648196A (en) 1997-07-28

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