WO2023035039A1 - Moteur électrique - Google Patents

Moteur électrique Download PDF

Info

Publication number
WO2023035039A1
WO2023035039A1 PCT/AU2022/051096 AU2022051096W WO2023035039A1 WO 2023035039 A1 WO2023035039 A1 WO 2023035039A1 AU 2022051096 W AU2022051096 W AU 2022051096W WO 2023035039 A1 WO2023035039 A1 WO 2023035039A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
electric motor
magnets
magnet
electromagnet
Prior art date
Application number
PCT/AU2022/051096
Other languages
English (en)
Inventor
Dale Thomas
Original Assignee
Dale Thomas
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
Priority claimed from AU2021902952A external-priority patent/AU2021902952A0/en
Application filed by Dale Thomas filed Critical Dale Thomas
Publication of WO2023035039A1 publication Critical patent/WO2023035039A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • 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
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
    • H01H47/32—Energising current supplied by semiconductor device
    • 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
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H02K21/145—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having an annular armature coil
    • 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
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K53/00—Alleged dynamo-electric perpetua mobilia
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
    • H02P25/18—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/14—Electronic commutators
    • H02P6/15—Controlling commutation time
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/20—Arrangements for starting
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/02—Arrangements for regulating or controlling the speed or torque of electric DC motors the DC motors being of the linear type
    • H02P7/025—Arrangements for regulating or controlling the speed or torque of electric DC motors the DC motors being of the linear type the DC motors being of the moving coil type, e.g. voice coil motors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
    • H01H47/32—Energising current supplied by semiconductor device
    • H01H47/325—Energising current supplied by semiconductor device by switching regulator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
    • 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
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/14—Electronic commutators
    • H02P6/16—Circuit arrangements for detecting position

Definitions

  • This invention relates generally to electric motors, and more particularly, this invention relates to an electric motor having a timing circuit which energises electromagnets to counteract magnetic field interaction between rotor and stator magnets depending on the rotational position of the rotor assembly to thereby create rotational force.
  • Conventional electric motors typically have a rotor having electromagnets which are switched according to the rotational position of the rotor to attract stator magnet, thereby inducing rotation.
  • the present invention seeks to provide an alternative form of electric motor, which will overcome or substantially ameliorate at least some of the deficiencies of the prior art, or to at least provide an alternative.
  • an electric motor comprising a stator assembly having a stator magnet, a rotor assembly having a rotor magnet magnetically interacting with the stator magnet and a timing circuit which energises an electromagnet to counteract magnetic field interaction between the magnets depending on the rotational position of the rotor assembly.
  • the rotor and stator magnets may be arranged to repel each other.
  • the timing circuit energises the electromagnet as the rotor magnet approaches the stator magnet, thereby diminishing the repulsive force.
  • the electromagnet may be de-energised to thereby no longer inhibit the magnetic interaction, thereby reinstating the repulsive force to repel the rotor magnet away from the stator magnet, thereby inducing rotational force of the rotor assembly.
  • Figure 1 shows an electric motor in accordance with an embodiment
  • Figure 2 shows an electric circuit of the electric motor in accordance with an embodiment
  • Figure 3 shows timing discs of the motor in accordance with an embodiment
  • Figure 4 shows rotors of the motor in accordance with an embodiment.
  • An electric motor 100 comprises a stator assembly having a stator magnet 101 and a rotor assembly having at least one rotor magnet 102 magnetically interacting with the stator magnet 101.
  • the motor 100 further comprises a timing circuit which energises at least one electromagnet 103 to counteract magnetic field interaction between the magnets 101 , 102 depending on the rotational position of the rotor assembly.
  • the magnets 101 , 102 may be arranged so as to repel each other.
  • the magnets 101 , 102 may be monopolar and of the same polarity or dipolar having their same poles facing to thereby create a repulsive force.
  • the timing circuit may energise the electromagnet 103 as a rotor magnet 102 approaches a stator magnet 101 , thereby diminishing the repulsive force.
  • the electromagnet 103 may be de-energised to thereby no longer inhibit the magnetic interaction between the magnets 101 and 102, thereby reinstating the repulsive force to repel the rotor magnet 102 away from the stator magnet 101 , thereby inducing rotational force of the rotor assembly.
  • the electromagnet may comprise a solenoid.
  • the timing circuit may be configured according to a width of the rotor magnet.
  • the rotor assembly may comprise a rotor disk 104 having the rotor magnet 102 thereon.
  • the rotor disc 104 comprises at least one pair of oppositely located rotor magnets 102A and 102B.
  • the rotor disc 104 is preferably non-magnetic, such as comprising aluminium, or acrylic in a preferred embodiment to reduce the overall weight of the motor 100.
  • each electromagnet 103 may have a nanocrystalline annealed MetglasTM amorphous metal cylindrical core of approximately 25 mm in diameter and approximately 65 mm in length. Furthermore, the electromagnets 103 may have a wire diameter of 0.60mm and have 1400 turns of enamelled copper wire on a bobbin with an internal diameter of approximately 25mm and a length of approximately 60mm. Furthermore, a heat sink may interface each electromagnet 103.
  • FIG 4 shows an embodiment wherein the rotor magnet 102 uses a series of dipolar magnets 105.
  • the dipolar magnets 105 may be orientated oppositely to dipolar magnets of the stator magnet 101 so that like poles thereof interface, thereby creating repulsive force.
  • the dipolar magnets 105 may be angled with respect to a radial axis of the rotor assembly, thereby generating a magnetic field angled with respect to the radial axis which creates a tangential force vector to assist rotation of the rotor assembly.
  • a first dipolar magnet 105 may be aligned with the radial axis whereas the other dipolar magnets 105 may be successively arranged at an increasing angles with respect to the radial axis to gradually increase the tangential force vector.
  • rotor discs 104 comprise 12 magnets in total, in four groups of three. As such, in the embodiment shown, each rotor magnet 102 comprises three adjacent dipolar magnets 105. [0025] Each dipolar magnet 105 may have a cross-section which increases in width radially. In other words, each dipolar magnet 105 may be substantially trapezoidal as shown.
  • the distance between the rotor magnet 102 and the stator magnet 101 may be sufficient so that repulsive force therebetween is greater than an attractive force between the rotor magnet 102 and an iron core of the electromagnet 103.
  • the rotor assembly may comprise a first set of rotor magnets 102A and a second set of rotor magnets 102B out of phase with respect to the first set of rotor magnets 102A with respect to a rotational axis of the rotor assembly.
  • the second set of rotor magnets 102B is 90° out of phase with respect to the first set of rotor magnets 102 A.
  • Each set of rotor magnets 102 may comprise at least one pair of oppositely located rotor magnets 102.
  • the rotor assembly may comprise a first rotor disc 104A having the first set of rotor magnets 102A and a respective first electromagnet 103A and a second rotor disc 104B having the second set of rotor magnets 102B and a respective second electromagnet 103B.
  • the rotor discs 104 may share a common rotor shaft 106.
  • the motor 100 may comprise a pair of electromagnets 103A and 103B each of which are switched four times per rotation (i.e., twice for each rotor magnet 102 of the respective rotor disc 104).
  • the rotor discs 104 may be spaced apart to reduce magnetic interaction between the first set of rotor magnets 102A and the second electromagnet 103B and the second set of rotor magnets 102B and the first electromagnet 103A.
  • the motor 100 may further comprise a timing disc 107 operably coupled to the timing circuit.
  • the timing disc 106 may comprise timing magnets 108 switching timing switches 109 of the timing circuit of the stator assembly.
  • the timing magnets 108 may have a width configured to control the duration of switching of the magnetic switches 109.
  • the timing magnets 109 may have a width configured according to a width of the respective rotor magnet 102.
  • the timing switches 109 may be reed switches.
  • the motor 100 may comprise first and second timing discs 107A and 107B each controlling timing for a respective electromagnet 103.
  • the timing disc 107 is preferably also non-magnetic, such as comprising aluminium.
  • Figure 2 shows an electrical circuit 1 15 of the motor 100 which comprises a regenerative circuit 1 1 1 comprising at least one electric generator 1 12.
  • the circuit 1 15 comprises an electric generator 1 12 either side of the rotor shaft 106.
  • the electric generator 1 12 may be a three-phase electric generator wherein the circuit 100 further comprises rectification 1 13 and power storage voltage conditioning 1 14 to recharge power storage 1 10, which may comprise a (super) capacitor bank.
  • the storage 1 10 may comprise battery storage.
  • the power storage 1 10 may be pre-charged prior operation and the storage 1 10 may be charged using excess wattage from the generator 1 12.
  • the electric generator 1 12 may be able to generate over 120 W and approximately 50 W of power from the generator 1 12 may be used to recharge the power storage 1 10, more than is required to power the electromagnets 103.
  • a charging controller may control charging of the battery according to the charge state of the battery.
  • the charging controller may control the switches 109 to draw power from the generator 1 10 inversely proportional to the charge state of the battery.
  • the power storage voltage conditioning 1 14 is a 150 V DC to 24 V DC buck converter.
  • An isolation relay 1 16 may interface the voltage conditioning 1 14 and the power storage 1 10.
  • a first electric generator 1 12A is used to recharge the power storage 1 10 whereas a second electric generator 1 12B is used to provide power to a load 1 17.
  • load voltage conditioning 1 18 interfaces the second electric generator 1 12B and the load 1 17.
  • the load voltage conditioning 118 may comprise a 150V DC to 14V DC buck converter followed by a 12 V DC to 240 V AC converter 120.
  • the circuit 115 shows the magnetic switches 109 being single pole double throw switches which, in a first position close a charging circuit to allow the generator 112A to recharge the power storage 110 and, in a second position, close a stator electromagnet circuit 121 to assist the electromagnets 103.
  • a 3 A 24 V DC regulator 122 may interface the power storage 110 and the electromagnets 103.
  • At least one of the magnets 101 , 102 and 108 may comprise rare earth magnets.

Landscapes

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

Abstract

L'invention concerne un moteur électrique comportant : un ensemble stator comportant un aimant de stator ; un ensemble rotor comportant un aimant de rotor interagissant magnétiquement avec l'aimant de stator ; et un circuit de synchronisation, qui excite un électroaimant pour compenser une interaction de champ magnétique entre les aimants selon la position de rotation de l'ensemble rotor. Les aimants de rotor et de stator peuvent être disposés pour se repousser mutuellement. Ainsi, le circuit de synchronisation excite l'électroaimant lorsque l'aimant de rotor approche de l'aimant de stator, ce qui réduit la force répulsive. Lorsque les aimants de rotor et de stator sont sensiblement adjacents, l'électroaimant peut être désexcité pour ne plus inhiber plus l'interaction magnétique, ce qui permet de rétablir la force répulsive pour repousser l'aimant de rotor à l'écart de l'aimant de stator, en induisant ainsi une force de rotation de l'ensemble rotor.
PCT/AU2022/051096 2021-09-13 2022-09-12 Moteur électrique WO2023035039A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2021902952A AU2021902952A0 (en) 2021-09-13 An electric motor
AU2021902952 2021-09-13

Publications (1)

Publication Number Publication Date
WO2023035039A1 true WO2023035039A1 (fr) 2023-03-16

Family

ID=85506063

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2022/051096 WO2023035039A1 (fr) 2021-09-13 2022-09-12 Moteur électrique

Country Status (1)

Country Link
WO (1) WO2023035039A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2282708A (en) * 1993-09-30 1995-04-12 Harold Aspden Electrical motor-generator
US20020097013A1 (en) * 2000-01-13 2002-07-25 Bedini Technology, Inc. Permanent electromagnetic motor generator
US6777838B2 (en) * 1997-12-16 2004-08-17 Fred N. Miekka Methods and apparatus for increasing power of permanent magnet motors
US20140191624A1 (en) * 2011-06-10 2014-07-10 Axiflux Holdings Pty Ltd. Electric Motor/Generator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2282708A (en) * 1993-09-30 1995-04-12 Harold Aspden Electrical motor-generator
US6777838B2 (en) * 1997-12-16 2004-08-17 Fred N. Miekka Methods and apparatus for increasing power of permanent magnet motors
US20020097013A1 (en) * 2000-01-13 2002-07-25 Bedini Technology, Inc. Permanent electromagnetic motor generator
US20140191624A1 (en) * 2011-06-10 2014-07-10 Axiflux Holdings Pty Ltd. Electric Motor/Generator

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