WO2015041483A1 - Rotor pour moteur à réluctance commutée - Google Patents

Rotor pour moteur à réluctance commutée Download PDF

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Publication number
WO2015041483A1
WO2015041483A1 PCT/KR2014/008748 KR2014008748W WO2015041483A1 WO 2015041483 A1 WO2015041483 A1 WO 2015041483A1 KR 2014008748 W KR2014008748 W KR 2014008748W WO 2015041483 A1 WO2015041483 A1 WO 2015041483A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
pole
switching
motor
reluctance motor
Prior art date
Application number
PCT/KR2014/008748
Other languages
English (en)
Korean (ko)
Inventor
정영춘
임인철
Original Assignee
(주)에스엔이노베이션
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 (주)에스엔이노베이션 filed Critical (주)에스엔이노베이션
Publication of WO2015041483A1 publication Critical patent/WO2015041483A1/fr

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/17—Stator cores with permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
    • H02K1/246—Variable reluctance rotors
    • 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

Definitions

  • the present invention relates to a rotor for a switching reluctance motor, and more particularly, a band-type magnetic split electrode capable of minimizing the self-mechanical switching vibration acoustic noise of the switching reluctance motor and improving torque generation performance. It relates to a rotor for a switching reluctance motor that forms a structure, which can accumulate rotational force through its own flywheel and smooth it with mechanical kinetic energy to reduce torque ripple.
  • the switching reluctance motor which has a long history in electric motor technology or in a device that converts electrical energy into rotating mechanical energy, has protrusions on the stator and the rotor, respectively.
  • the coil is wound around the salient pole of the stator, but the rotor is characterized in that no coil or magnet.
  • switching reluctance motors are simpler in structure than conventional induction motors and synchronous motors, and can be produced at a lower price. They are also mechanically fast and are not affected by the limited magnetic energy of permanent magnets. Good speed-output control characteristics. There are many advantages, such as providing very high durability even in high temperature environments.
  • the switching reluctance motor When the protruding pole of the winding armature is excited, the switching reluctance motor is aligned with the armature when the protruding poles of the unwinding rotor are not coincident with each other. It is an electro-mechanical energy converter that obtains rotational force by using the torque (Dwe lled torque).
  • Inner Rotor 2-phase motors are usually composed of a 4-pole armature and a 2-pole rotor.
  • Three-phase motors consist of a six-pole armature and a four-pole rotor.
  • Four-phase motors consist of an eight-pole armature and a six-pole rotor.
  • a five-phase motor consists of a ten-pole armature and an eight-pole rotor. It consists of an array. 9 Meanwhile.
  • the outer ring type switching reluctance motor has a stator projecting pole divided into eight pole pitches and six stator poles by replacing the armature and the rotor of the inner rotor type switching reluctance motor in US Patent Application No. 2011 / 0284300A1.
  • a four-phase switching reluctance motor has been proposed, which consists of an outer ring rotor forming a salient pole with pole pitch.
  • FIG. 1 is a cross-sectional view of the outer ring type switching reluctance motor according to the prior art, the outer winding-free rotor (1). It consists of a winding (5) stator (3) fixed to the inner centric shaft (6).
  • the protrusion pole rotor has a problem of increasing windage (Ai r l oss) due to a lot of air resistance.
  • switching reluctance motors have problems of full-scale commercialization due to noise, torque ripple, and start instability, and in order to solve these problems, control devices or motor structures are complicated, or high accuracy of design and processing assembly is required. .
  • the present invention forms a band-shaped magnetic split pole structure that can minimize the self-mechanical switching vibration acoustic noise of the switching reluctance motor and improve the torque generating performance, and the rotational force through its own flywheel It is an object of the present invention to provide a rotor for a switching reluctance motor, which can accumulate and smooth out mechanical kinetic energy to reduce torque ripple.
  • the present invention provides a rotor for a switching reluctance motor.
  • Ring-shaped rotor body portion a rotor pole formed at equal intervals inside the rotor body portion; And a plurality of opening holes drilled at equal intervals on the rotor poles.
  • the rotor pole is a rotor convex pole protruding a predetermined length radially inward from the inner surface of the rotor body portion with a step on the center. Characterized in that the rotor concave pole accommodated a predetermined length in the radially outer side of the rotor body portion.
  • the rotor body portion according to the present invention to form a certain thickness around the outer periphery to form a magnetic passage, further comprising a flywheel core portion to increase the weight of the rotor body portion to increase the moment of inertia It features.
  • the rotor body portion according to the invention is characterized in that it further comprises a position encoder for distinguishing the rotor convex pole and the rotor concave pole.
  • the position encoder according to the present invention is characterized in that the entire position detecting cylinder is installed on the rotor convex pole.
  • the energizing unit according to the present invention aluminum, iron. It is characterized by consisting of any one of plastic, permanent magnet.
  • the rotor pole and the opening hole according to the invention is in the rotor body portion
  • the step D1 of the rotor convex pole and the rotor concave pole according to the present invention is characterized by having a length of 1 to 5 times the gap formed between the vortex pole and the rotor convex pole of the former reporter.
  • the opening hole according to the present invention is characterized in that the opening is formed at a predetermined interval between the rotor convex pole and the rotor concave pole, the interval has the same value as the step.
  • the opening hole according to the invention is characterized in that it is made of any one of the shape of a circle, oval, polygon.
  • the rotor body portion according to the present invention is characterized in that the ferromagnetic material is laminated and assembled at least one or more.
  • the rotor body portion according to the invention pure iron. It is characterized in that the metal material containing one element or alloy of the silicon steel sheet.
  • the present invention provides a switching reluctance motor having a high power density from small output to large output according to the size of the rotor because high torque can be generated in a band-shaped outer ring rotor with a large positive torque generation area by switching the armature. There is an advantage to this.
  • the present invention does not have a protruding pole in which the rotor stands on the armature.
  • An inclined step is formed between each of the rotor convex and rotor concave poles separated by the openings, thereby reducing windage caused by the air resistance of the rotor, thereby reducing the magnetic-mechanical vibration and the resonance noise.
  • the present invention has the advantage that it is possible to provide a rotor having a mechanical high torque characteristics by reducing torque ripple by accumulating rotational energy by the self flywheel effect.
  • 1 is a cross-sectional view showing a ring-type switching reluctance motor according to the prior art.
  • 2 is a cross-sectional view showing a rotor according to the prior art.
  • FIG. 3 is a perspective view showing a rotor for a switching reluctance motor according to the present invention.
  • 4 is a plan view showing a rotor for the switching reluctance motor according to FIG. 3;
  • 5 is an exemplary view showing the aperture shape of the rotor for the switching reluctance motor according to FIG. 3.
  • FIG. 6 is a waveform diagram showing a torque generation principle of a rotor for a switching reluctance motor according to the present invention
  • FIG. 7 is a waveform diagram illustrating a torque generation process of a rotor for a switching reluctance motor according to the present invention.
  • FIG. 8 is a plan view showing another embodiment of a rotor for a switching reluctance motor according to the present invention.
  • FIG. 9 is a plan view showing another embodiment of a rotor for a switching reluctance motor according to the present invention.
  • FIG. 10 is a perspective view showing a motor using a rotor for a switching reluctance motor according to the present invention
  • FIG. 11 is a cross-sectional view showing a motor using the rotor for the switching reluctance motor according to FIG. 10;
  • FIG. 12 is an electric circuit diagram showing a control circuit of a motor using the rotor for the switching reluctance motor according to FIG. 10;
  • FIG. 3 is a perspective view illustrating a rotor for a switching reluctance motor according to the present invention
  • FIG. 4 is a plan view illustrating a rotor for a switching reluctance motor according to FIG. 3
  • FIG. 5 is a diagram for a switching reluctance motor according to FIG. 3.
  • Illustrated diagram showing the opening hole shape of the rotor 6 is a waveform diagram showing a torque generation principle of a rotor for a switching reluctance motor according to the present invention.
  • 7 is a waveform diagram illustrating a torque generation process of a rotor for a switching reluctance motor according to the present invention.
  • the rotor 100 for the switching reluctance motor forms a band-shaped magnetic split electrode structure that can minimize the self-mechanical switching vibration acoustic noise of the switching reluctance motor and improve torque generation performance.
  • Rotor body 110, rotor pole 120, aperture hole 130, and position encoder 321 are configured to reduce torque ripple by smoothing mechanical kinetic energy through the flywheel. .
  • the rotor body part 110 is a ring-shaped metal member, and is a ferromagnetic material assembled by stacking at least one or more sheets of electrical steel, and the rotor body part 110 is an element or alloy of pure iron or silicon steel. Is done.
  • the rotor body portion 110 forms a predetermined thickness around the outer circumference to form a magnetic field passage.
  • a flywheel core portion 112 is formed on the outer surface of the rotor body portion 110 around the magnetic path boundary line 111 to increase the weight of the rotor body portion 110 to increase the moment of inertia.
  • the flywheel core portion 112 serves as a magnetic field passage (Df), and increases the weight of the rotating body portion 110 to perform a flywheel function to accumulate the rotational energy of the rotating body portion 110 Try to do it.
  • Df magnetic field passage
  • the magnetic path boundary line 111 is a center line where the length of the magnetic field path Df and the length Di of the rotor concave electrode 122 are the same.
  • the rotor poles 120 are six split poles in which 2n + 2 (where n is self-numbered water) are formed at equal intervals on the inside of the rotor body part 110 to form a six-pole rotor structure.
  • the rotor pole 120 forms a step D1 that forms an inclination angle (for example, 45 ° ) in the center between pole pitches, and radially from an inner surface of the rotor body part 110.
  • a rotor convex electrode 121 protruding a predetermined length inwardly and a rotor concave electrode 122 accommodated a predetermined length radially outward of the rotor body part 110 are formed.
  • the length of the rotor voltok pole 121 and the rotor concave electrode 122 is, for example. It is formed at equidistant distances R3 and R4 between the opening hole l 130a and the opening hole 2 130b.
  • step D1 of the rotor convex pole 121 and the rotor concave pole 122 is 1 to 5 times the length of the gap formed between the convex pole 312 of the armature and the rotor convex pole 121. It is desirable to have a value in the range.
  • the opening hole 130 is a rotor convex pole 121 and a rotor concave pole of the rotor pole 120 2 n + 2 pieces (where ⁇ is a natural number) are spaced at equal intervals between the 122 portions, and the opening hole 130 is shown in Fig. 5 (a).
  • a circular shape As shown in Fig. 5 (b) and Fig. 5 (c), a circular shape. An oval or polygonal shape is formed, and an opening 131 of a predetermined distance D2 is formed between the rotor convex pole 121 and the rotor concave pole 122.
  • the opening 131 has an opening l 131a formed in the rotor convex electrode 121, and an opening 2 131b formed in the rotor concave electrode 122, so that a difference in length by the step D1 occurs.
  • the opening 131 is formed to the size of the interval D2 having the same value as the step D1.
  • the interval D2 may be smaller or larger than a step D1 in a predetermined range.
  • the opening hole 130 forms a 60 ° dividing angle R1 based on the center line of the opening 131 when the 6-pole rotor is formed, and 57.5 ° dividing angle R2 from the opening boundary line of each pole. It is formed to have.
  • the opening 130 is formed in the body body 110 so as not to cross the magnetic field path boundary line 111.
  • the position encoder 321 is configured to provide the position information of the rotor 100, preferably to distinguish the position of the rotor convex pole 121 and the rotor concave pole 122, the rotor body It is installed on the upper or lower surface of the unit (110).
  • the position encoder 321 has a position detecting energizer 322 installed on the rotor convex pole 121 to detect the position of the rotor convex pole 121, and is installed in the armature 310 to be described later. In response to the sensor 320, the position sensor 320 can detect the position of the rotor ball roll electrode 121.
  • the conducting unit 322 is aluminum, iron. It is made of one of the permanent magnets, and reacted with the position sensor 320 so that the position sensor 320 can detect a signal.
  • the rotor 100 according to the present embodiment will be described using a six-pole rotor having six split poles for convenience of description, but is not limited thereto.
  • the rotor body 110 ′ as shown in FIG. 8.
  • Rotor pole 120 'and 4 opening holes 130' which form the rotor convex pole 12 ⁇ and the rotor concave pole 122 ', to have four split poles with a pitch angle of 90 ° ).
  • An opening 13 ⁇ may be formed to form a rotor 100 'having a constant torque angle of 45 ° of the rotor convex pole 12 ⁇ , and a pitch angle of the rotor body 110 " 45 ° is to have eight split pole rotor boltok pole (121 ") and the rotor recesses pole (122"), and rotor poles formed ol (120 ") and 8 opening hole (130”) and the opening (131 " ) May be configured to constitute a rotor 100 "having a constant torque angle of 22.5 ° of the rotor convex pole 121".
  • positive torque 210 is generated in the inductance rising period Qs—Q1, as shown in FIG. 6 (b), and negative torque is generated in the falling period Q2-Q3.
  • a switching control is performed to excite the pole only in the constant torque section (Qs-Ql) and cut off the exciting current in the negative torque section (Q2-Q3).
  • Rotor 100 is as shown in FIG.
  • the pitch of the pole (Qs-Q3) is 57.5 °
  • the pitch of the rotor pole 120 is divided into the rotor convex pole 121 and the rotor concave pole 122 of the rotor convex pole 121
  • the positive torque generating section (Qs-Ql) is about half (28.75 ° ) of the rotor pole 120
  • the negative torque 22 generating section is the rotor concave electrode 122 which receives negative torque force from the magnetic field of the armature.
  • Step D1 is formed so that there is a rotor angle that is more than twice as large as the conventional rotational torque, and the inductance value is also increased proportionally.
  • the rotor 100 generates the positive torque 210 in the interval of 28.75 ° , which is half of 57.5 ° , according to the inductance waveform 200 of each pole (A, ⁇ , C) in one rotation period (2 ⁇ ). do.
  • the rotor 100 is given sufficient mass of the rotor through the width and laminated thickness of the flywheel core portion 112. It has a flywheel effect proportional to twice the mass of the rotor and the radius of the rotor.
  • the rotation torque energy for smoothing the torque ripple in the section of the rotor concave pole 122 except for the acceleration section of the constant torque 210 can be accumulated.
  • FIG. 10 is a perspective view showing a motor using a rotor for a switching reluctance motor according to the present invention.
  • FIG. 11 is a cross-sectional view of a motor using the rotor for the switching reluctance motor according to FIG. 10.
  • 12 is an electrical circuit diagram illustrating a control circuit of a motor using the rotor for the switching reluctance motor according to FIG. 10. As shown in FIGS. 10-12.
  • the rotor 100 is installed in the housing 300 free of rotation, and a straight armature 310 having a single-phase coil 330 wound around the rotor 100 is installed through the fixed shaft 340. .
  • an armature concave pole 311 and an armature convex pole 312 having a pitch of the same width as the rotor convex pole 121 and the rotor concave pole 122 of the rotor pole are provided. and forming, on the i pitch center of the armature pole concave 311 and the convex pole armature 312 is formed in a step 313.
  • Position sensors 320 are installed at both ends of the armature 310 to detect the energization part 322 of the rotor 100.
  • the position sensor 320 is an optical sensor. It consists of either a magnetic hall sensor or a proximity sensor and reacts with the energization unit 322 to output a position signal.
  • the position sensor 320 is rotated.
  • the energization unit 322 of the position encoder 321 providing the position information of 100 is sensed.
  • the on / off control unit 400 operates to turn on / off the switching device (S / W) of the power switching circuit of the direct current power source to energize the coil 330.
  • the armature 310 is excited.
  • the negative torque (211, see Fig. 7 (b)) is entered into the section where the position sensor 320 of the armature 310 is the position encoder 321
  • the position sensor 320 of the armature 310 is turned out of the energizing portion 322 of the armature 310 to turn off the switching device (S / W) in the negative torque (211) section.
  • the armature 310 is no longer excited and the rotor 100 freed from the magnetic force is driven by the flywheel energy of the flywheel core portion 112 (see FIG. 3) accelerated in the constant torque section.
  • the rotor 100 enters the positive torque (220, 230, FIG. 7 (b)) section of the pole B and the pole C again, the rotor 100 generates rotation torque by the excitation of the armature 310, and at the same time the flywheel core
  • the flywheel energy accumulated by the unit 112 is accumulated to have a continuous rotational force even in the sub-torques 221 and 231 of the B and C poles (see FIG. 7B).
  • the rotor 100 is to generate a rotation torque in one direction.
  • the direction of rotation is changed in accordance with the change of positions of the armature concave pole 311 and the armature convex pole 312 of the rotor pole 120 and the armature 310.
  • the rotor 100 can form any output and torque-speed characteristics according to the outer diameter and the laminated thickness of the rotor body, thereby providing various outer ring rotor type switching reluctance motors. .
  • Magnetic field path boundary line 112 Flywheel core part
  • housing 310 armature : Armature concave pole 312 : Armature convex pole : Position sensor 321 : Position encoder : Current-carrying part 330 : Coil : Fixed shaft 350 : Magnetic circuit passage : On / off control

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Synchronous Machinery (AREA)

Abstract

L'invention concerne un rotor pour un moteur à réluctance commutée qui comprend une structure à pôle magnétique fendu de type à bande qui minimise le bruit de vibration du moteur à réluctance commutée dû à la commutation magnétique-mécanique et qui améliore la performance de génération de couple ; stocke l'énergie rotative en utilisant un volant autonome ; et diminue l'ondulation de couple par lissage en utilisant de l'énergie cinétique mécanique.
PCT/KR2014/008748 2013-09-23 2014-09-19 Rotor pour moteur à réluctance commutée WO2015041483A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020130112470A KR101558156B1 (ko) 2013-09-23 2013-09-23 스위칭 릴럭턴스 모터용 회전자
KR10-2013-0112470 2013-09-23

Publications (1)

Publication Number Publication Date
WO2015041483A1 true WO2015041483A1 (fr) 2015-03-26

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ID=52689084

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2014/008748 WO2015041483A1 (fr) 2013-09-23 2014-09-19 Rotor pour moteur à réluctance commutée

Country Status (2)

Country Link
KR (1) KR101558156B1 (fr)
WO (1) WO2015041483A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2583721A (en) * 2019-05-02 2020-11-11 Ricardo Uk Ltd Electric machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61154467A (ja) * 1984-12-12 1986-07-14 Secoh Giken Inc １相リラクタンス型電動機
JPH059177U (ja) * 1991-07-08 1993-02-05 アスモ株式会社 回転電機
WO2002097954A1 (fr) * 2001-05-31 2002-12-05 Robert Bosch Gmbh Moteur a reluctance commute a deux phases
US20100109451A1 (en) * 2007-04-12 2010-05-06 Compact Dynamics Gmbh Energy accumulator comprising a switched reluctance machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61154467A (ja) * 1984-12-12 1986-07-14 Secoh Giken Inc １相リラクタンス型電動機
JPH059177U (ja) * 1991-07-08 1993-02-05 アスモ株式会社 回転電機
WO2002097954A1 (fr) * 2001-05-31 2002-12-05 Robert Bosch Gmbh Moteur a reluctance commute a deux phases
US20100109451A1 (en) * 2007-04-12 2010-05-06 Compact Dynamics Gmbh Energy accumulator comprising a switched reluctance machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2583721A (en) * 2019-05-02 2020-11-11 Ricardo Uk Ltd Electric machine
GB2583721B (en) * 2019-05-02 2021-11-03 Ricardo Uk Ltd Electric machine
US11827109B2 (en) 2019-05-02 2023-11-28 Ricardo Uk Limited System for delivering and storing energy

Also Published As

Publication number Publication date
KR20150033766A (ko) 2015-04-02
KR101558156B1 (ko) 2015-10-12

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