WO2000048289A1 - Moteur sans balais et regulateur de commande a cet effet - Google Patents

Moteur sans balais et regulateur de commande a cet effet Download PDF

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Publication number
WO2000048289A1
WO2000048289A1 PCT/JP2000/000656 JP0000656W WO0048289A1 WO 2000048289 A1 WO2000048289 A1 WO 2000048289A1 JP 0000656 W JP0000656 W JP 0000656W WO 0048289 A1 WO0048289 A1 WO 0048289A1
Authority
WO
WIPO (PCT)
Prior art keywords
pole piece
brushless motor
voltage
phase winding
circumferential direction
Prior art date
Application number
PCT/JP2000/000656
Other languages
English (en)
Japanese (ja)
Inventor
Toshihiko Futami
Yoshiaki Inaba
Kiyotaka Kawamura
Original Assignee
Toshiba Carrier Corporation
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 Toshiba Carrier Corporation filed Critical Toshiba Carrier Corporation
Publication of WO2000048289A1 publication Critical patent/WO2000048289A1/fr

Links

Classifications

    • 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
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
    • 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
    • H02K1/08—Salient poles
    • 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
    • H02P6/08—Arrangements for controlling the speed or torque of a single motor
    • H02P6/085—Arrangements for controlling the speed or torque of a single motor in a bridge configuration

Definitions

  • the present invention relates to a brushless motor suitable for mounting on a compressor for driving a compressor such as an air conditioner, and a drive control device for the brushless motor.
  • a brushless motor suitable for mounting on a compressor for driving a compressor such as an air conditioner, and a drive control device for the brushless motor.
  • the brushless motor 10 has magnetic poles 2 protruding radially inward at positions divided into six parts in the circumferential direction, and a stay 1 formed by winding a phase winding (not shown) on the magnetic poles 2. It is composed of an opening 5 in which a permanent magnet 9 is accommodated in a magnet insertion hole formed at a position equally divided into four in the circumferential direction.
  • Each of the magnetic poles 2 formed in the stay 1 has a magnetic pole piece 3 having a desired magnetic flux density distribution and mechanically supporting a phase winding.
  • the permanent magnet 9 provided in the rotor 5 has a small-diameter surface facing the inner peripheral surface of the stator and a large-diameter surface close to the rotor axis, which are formed in a substantially concentric inverted arc shape. It is stored facing the axis.
  • a magnet insertion hole of the same shape is provided in the iron core portion of the mouth 5, and the permanent magnet 9 is attached to the magnet insertion hole.
  • a low iron core outer periphery 6 is formed between the small-diameter surface of the permanent magnet 9 and the magnetic air gap, and the iron core interposed between the adjacent permanent magnets 9 is the low iron core outer periphery.
  • a lowway iron core connecting passageway 7 connecting 6 to the inner circumference 8 of the lowway iron core is formed.
  • the small-diameter surfaces of these permanent magnets 9 facing the inner peripheral surface of the stator form four magnetic poles in the order of S, N, S, N, respectively.
  • FIG. 5 is a circuit diagram showing an example of such a drive control device.
  • the AC voltage of an AC power supply 11 is converted to DC by a forward conversion circuit 12 as a DC voltage circuit including a full-wave rectifier circuit, and the obtained DC voltage is switched by a switching circuit.
  • Route 13 The switching circuit 13 has six switching elements U10, U--, V +, V--, W10, and W--, of which the switching elements U + and U-- form a series circuit and are sequentially connected.
  • switching elements V + and V— and W + and W— are connected in series between the output terminals of the conversion circuit 12, respectively.
  • a circulating diode is connected in anti-parallel to each of the switching elements U +, U—, V tens, V ⁇ , W +, and W—.
  • the interconnection points of the switching elements of each series circuit are connected to the external connection terminals a, b, and c of the brushless motor 10.
  • the phase windings of the motor 10 are star-connected.
  • one of the positive-side switching element of one series circuit of the switching circuit 13 and the negative-side switching element of another series circuit is continuously turned on and the other is intermittently turned on.
  • the respective phase windings of the brushless motor 10 are sequentially energized.
  • a rotating magnetic field is generated from the stator by sequentially energizing the phase windings.
  • the interaction between the rotating magnetic field and the magnetic field generated by the mouth causes the rotor 5 to rotate.
  • the mouth rotation position is detected by the position detector 14 based on the induced voltage. That is, the position detector 14 detects the rotational position of the rotor from the change in the induced voltage of the phase winding in the non-energized state, and sends a position signal to the controller 15.
  • the position detecting section 14 compares the level of the induced voltage generated in the phase winding in the non-energized state with a predetermined reference voltage level. The rotation position is detected as the reference rotation position. In accordance with the reference rotation position detected in this way, the control unit 15 controls the energization switching to each phase winding, that is, the timing of commutation.
  • the position detection unit 14 uses the DC output voltage of the forward conversion circuit 12 as an operating power source, and outputs the terminal voltage of the phase winding temporarily de-energized to the neutral point of the phase winding. Input to detect the rotation position of the mouth.
  • Fig. 6 shows the details of the detection circuit for one phase among the detection circuits for three phases that compose the position detection unit 14.
  • the neutral point The terminal voltage V a of the I / phase winding that is seen is, for example, an analog filter consisting of a low-pass filter.
  • the output of the analog filter is applied to the non-inverting input terminal (+) of the comparator, while the neutral point voltage Vp is directly applied to the comparator. 2 Inverted input terminal (-).
  • the comparator 14 2 uses the voltage V p applied to the inverting input terminal (1) as a reference, and the voltage applied to the non-inverting input terminal (+), that is, the terminal voltage of the U-phase winding obtained through the filter is the reference voltage. When it is lower than this, it outputs a signal of logic "0", and when it is equal to or higher than the reference voltage level, it outputs a signal of logic "1". Now, assuming that the neutral point is grounded and its voltage is set to zero, the point at which the terminal voltage of the U-phase winding crosses the neutral point voltage, that is, the zero-cross point, The logic level of the output signal changes. This change point is detected as a low-speed rotation position of the brushless mode 10.
  • FIG. 7 is a waveform diagram showing the relationship between the terminal voltage Va of the U-phase winding, the neutral point voltage, and the terminal voltage Vfa obtained through the analog filter 141. That is, during the power supply suspension period, the voltage Eu is induced, and points where the induced voltage Eu intersects with the neutral point voltage Vp, so-called zero-cross points P and Q, are detected as the rotational positions of the low and high phases.
  • the induced voltage due to the magnetic flux generated from the magnetic poles of Rho-Bi is sinusoidal as shown by the solid line and the broken line, but it is shown by the solid line because there is a conduction pause period and a conduction period due to commutation.
  • the terminal voltage Va is applied to the analog filter 141, and the voltage Vfa indicated by the broken line is applied to the comparator 144.
  • the voltage Vfa that has passed through the analog filter 144 has a phase delay of 90 degrees compared to the terminal voltage Va, and the zero-crossing point between the terminal voltage Vfa and the neutral point voltage Vp is also A phase delay of 90 degrees is generated as compared with the zero crossing point between the terminal voltage Va and the neutral point voltage Vp.
  • the point at which the zero-cross point P in Fig. 7 occurs is when the mouth position of the brushless motor 10 is in the state shown in Fig. 8. There is one time. That is, it is determined that the current flows in the direction shown in the phase windings 4 of the V phase and the W phase and the current does not flow in the phase winding 4 of the U phase.
  • the magnetic flux linked to the U-phase winding includes not only the magnetic flux generated by the permanent magnet 9 but also the magnetomotive force of the winding current, that is, the magnetic flux generated by the armature magnetomotive force.
  • FIG. 10 shows the positional relationship between the stay 1 and the row 5 when the mouth 5 rotates slightly more than in FIG. In the process from the state in FIG. 9 to the state in FIG. 10, the mouth-to-mouth iron core connection passage 7 is no longer opposed to the U-phase magnetic pole 2, and passes from the W-phase magnetic pole 2 through the low iron core connection passage 7.
  • the magnetic flux linked to the phase winding of the U-phase magnetic pole 2 sharply decreases, and the induced voltage Eu oscillates near the neutral point voltage Vp as shown in FIG.
  • the vibration of the induced voltage Eu due to the sudden change of the armature magnetomotive force magnetic flux becomes larger as the thickness of the pole piece 3 of the magnetic pole 2 and the width of the mouth-to-iron connection passage 7 become wider.
  • Due to the oscillation of the induced voltage E u the terminal voltage waveform after passing through the analog filter 14 1 becomes Vfb in Fig. 11, and the neutral point is earlier than the waveform Vfa without vibration.
  • the voltage reaches the level of Vp, and an erroneous zero-cross point P is detected corresponding to the false zero-cross point Pb.
  • n is an integer of 2 or more, and magnetic poles each having a columnar portion that protrudes inward in the radial direction at a position equally divided in the circumferential direction by 3 n, A pole piece extending in the circumferential direction from the tip and surrounding the columnar part of the magnetic pole and winding a phase winding wire around it, and formed at 2n equally spaced positions in the circumferential direction A permanent magnet is housed in the magnet insertion hole, and a space between adjacent permanent magnets viewed in the circumferential direction has a rotor forming a connection passage connecting the inner peripheral portion and the outer peripheral portion of the rotor core.
  • the brushless motor is characterized in that the average thickness of the pole pieces is set to a thickness that does not cause vibration in the voltage waveform near the cross-section of the induced voltage of the phase winding in a non-energized state during operation. Is provided. According to the present invention, it is possible to obtain a brushless motor in which drive abnormality hardly occurs by suppressing the oscillation of the induced voltage due to the leakage magnetic flux due to the armature magnetomotive force.
  • the poles are formed at 6 equally spaced locations in the circumferential direction, the tip of the pole piece is approximately 1 mm or slightly thinner, and the pole piece extends from the tip to the column It should be gradually thicker and the angle between the back surface of the pole piece and the side surface of the pole column should be 130 degrees or slightly smaller.
  • the poles are formed at 6 equally spaced locations in the circumferential direction, the tip of the pole piece is approximately 1 mm or slightly thinner, and connects the back end of the pole piece to the back base
  • the angle between the line and the side of the column should be 130 degrees or slightly less.
  • the circumferential width of the connecting passage in Rhoy should be approximately 2 mm or slightly smaller. By reducing the width of the connecting passage in the circumferential direction to approximately 2 mm or less or slightly less, the workability of iron core punching and the strength of the rotor can be reduced without making the connecting passage narrower than necessary. Can be prevented.
  • the rotational position of the rotor can be detected by directly comparing the induced voltage of the non-energized phase winding with the reference voltage.
  • a drive control device with a simplified configuration of the rotational position detecting unit can be obtained.
  • FIG. 1 is a partial front view showing a configuration of a brushless camera according to an embodiment of the present invention.
  • FIG. 2 is a waveform diagram corresponding to three types of pole piece shapes, illustrating the dynamic characteristics of the embodiment shown in FIG. 1,
  • FIG. 3A and FIG. 3B are partial front views of a stay showing the configuration of the brushless motor according to another embodiment of the present invention when the motor is viewed from the axial direction.
  • Fig. 4 is a front view showing the schematic configuration of a conventional brushless motor viewed from the axial direction.
  • Figure 5 shows a block diagram of a general drive control device for driving brushless motors.
  • FIG. 6 is a circuit diagram showing a detailed configuration of a position detection unit in the drive control device shown in FIG. 4,
  • FIG. 7 is a waveform diagram for explaining the operation of the position detection unit shown in FIG. 6,
  • Fig. 8 is a front view of the brushless motor viewed from the axial direction for explaining the induced voltage oscillation caused by the sudden change of the armature magnetomotive flux.
  • Fig. 9 is a front view of Brasilesmo viewed from the axial direction for explaining the oscillation of the induced voltage due to the sudden change of the armature magnetomotive flux.
  • FIG. 10 is a front view of the brushless motor viewed from the axial direction for explaining the oscillation of the induced voltage due to the sudden change of the armature magnetomotive force magnetic flux.
  • FIG. 11 is a waveform diagram for explaining the oscillation of the induced voltage due to the sudden change of the armature magnetomotive force magnetic flux.
  • FIG. 1 is a partial front view of a brushless camera according to an embodiment of the present invention when viewed from an axial direction.
  • the magnetic pole 2 having the columnar portion 2 c protruding radially inward on the virtual axis X set at a position equally divided into 6 in the circumferential direction with respect to the axis 0 is formed.
  • Each of the magnetic poles 2 is provided with a magnetic pole piece 3 extending in a circumferential direction from a radially inner end of each of the columnar portions 2c, and the magnetic pole piece 3 makes a magnetic flux density distribution of a magnetic gap a desired shape. In addition to its role, it also has the role of mechanically supporting the phase winding.
  • the end faces of the magnetic pole 2 and the pole piece 3 facing the opening form a part of a cylindrical surface having a radius R determined according to the outer diameter of the rotor.
  • the magnetic pole 2 has mutually parallel side surfaces 2a and 2b symmetrically formed on both sides about the axis X.
  • the pole piece 3 has a shape whose thickness increases toward the columnar portion 2c with respect to the thickness T of the tip portion, and the back surface 3a of the pole piece 3 is a surface on which the phase winding is wound.
  • the distance G is selected to be, for example, the minimum dimension that allows winding of a phase winding.
  • Fig. 1 does not show this step 1 However, Rho 5 (see Figs. 8, 9 and 10) with four permanent magnets 9 is used.
  • the vibration of the induced voltage Eu due to the sudden change of the armature magnetomotive force magnetic flux increases based on the experience that the thickness of the pole piece 3 of the magnetic pole 2 and the width of the connecting passage 7 of the low iron core increase respectively.
  • the diameter of the mouth is 60 mm
  • the circumferential width of the connecting passage connecting the inner circumference and the outer circumference of the rotor core is 2 mm or slightly narrower from the viewpoint of ensuring sufficient strength. Formed.
  • the minimum value of the thickness T of the tip of the pole piece 3 is limited to 0.5 to 1.0 mm.
  • the thickness T of the tip is 1.0 mm
  • the position of the tip is fixed at the same position
  • the thickness of the root portion of the wedge-shaped pole piece 3 that is, the average thickness is changed to three types.
  • the induced voltage waveform was observed.
  • an angle 0 between the back surface 3a of the pole piece 3 and the side surface 2a of the columnar portion 2c adjacent to the back surface 3a is used.
  • the oscillation of the induced voltage Eu due to the sudden change of the armature magnetomotive force can be eliminated by reducing the average thickness of the pole piece 3 of the magnetic pole 2.
  • the voltage waveform near the zero cross of the induced voltage of the phase winding in the non-energized state may be set to a thickness that does not cause vibration.
  • the angle between the back surface 3a of the pole piece 3 and the side surface 2a of the columnar portion 2c is 120 degrees. Or it Voltage oscillation can be prevented by making the angle slightly smaller, and it can be said that the angle 0 is the best at 120 degrees, which is the best design in view of the strength of the pole piece 3.
  • FIG. 3A and FIG. 3B are partial front views of the stay 1 viewed from the axial direction, showing the configuration of another embodiment of the brushless motor according to the present invention.
  • the back surface of the pole piece 3 is formed in a step shape, and its thickness increases from the circumferential end toward the columnar portion as tt2 (> t1), t3 (> t2). It is changed like this.
  • the back surface of the pole piece 3 is formed as an arc surface having a radius R, which is almost equal to or slightly larger than the back surface.
  • the angle between the line connecting the tip of the back surface of the pole piece 3 and the base of the back surface and the side surface 2a of the columnar portion 2c is 120 degrees or slightly less. It is a smaller one. Thereby, the same effect as that of the embodiment shown in FIG. 1 can be obtained.
  • the number of steps formed on the back surface of the pole piece 3 shown in FIG. the columnar portion 2c protruding inward in the radial direction and the magnetic pole piece 3 extending in the circumferential direction from the distal end of the columnar portion 2c are provided at six equally spaced positions in the circumferential direction.
  • a brushless motor provided with a stay having a magnetic pole 2 and a mouth containing a permanent magnet in a magnet insertion hole formed at a position equally divided into four parts in the circumferential direction has been described. Is not limited to this, where n is an integer of 2 or more, and a step having radially inwardly protruding magnetic poles at positions equally divided into 3 n in the circumferential direction, and 2 n in the circumferential direction
  • the present invention can be widely applied to a brushless mode having a low and a high pressure in which permanent magnets are arranged at equally divided positions.
  • the terminal voltage is applied to the analog filter 141 and the output thereof is applied to the comparator 144 to detect the rotation position of the mouth. It is also possible to configure the drive control device to take out the induced voltage of the above, and compare the induced voltage with the neutral point voltage as the reference voltage to detect the point at which the two cross.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Brushless Motors (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

La présente invention concerne un moteur sans balais comprenant un stator à 3n pôles magnétiques (n étant un entier ≥2) divisant la circonférence en 3n parties égales. Chacune des parties est pourvue d'une colonne radiale tournée vers l'intérieur. Des pièces polaires magnétiques prennent naissance circonférenciellement aux extrémités de la colonne. Un bobinage de phase est enroulé autour de la colonne. Un rotor est pourvu de 2n aimants permanents reçus dans des trous d'insertion d'aimants divisant la circonférence en 2n parties égales. Les intervalles circonférenciels entre les aimants permanents définissent des chemins de liaison joignant la zone périphérique intérieure à la zone périphérique extérieure du noyau de fer doux du rotor. L'épaisseur moyenne des pièces de l'aimant est calculée de façon que, pendant le fonctionnement, aucune vibration n'affecte la forme d'onde de la tension au voisinage de la transition par zéro de la tension induite du bobinage de phase en l'absence de passage de courant.
PCT/JP2000/000656 1999-02-10 2000-02-07 Moteur sans balais et regulateur de commande a cet effet WO2000048289A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11/32610 1999-02-10
JP11032610A JP2000232762A (ja) 1999-02-10 1999-02-10 圧縮機用ブラシレスｄｃモータ及びその駆動制御装置

Publications (1)

Publication Number Publication Date
WO2000048289A1 true WO2000048289A1 (fr) 2000-08-17

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Country Link
JP (1) JP2000232762A (fr)
CN (1) CN1181605C (fr)
TW (1) TWI238584B (fr)
WO (1) WO2000048289A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2844112A1 (fr) * 2002-08-29 2004-03-05 Mitsubishi Electric Corp Moteur synchrone a aimant permanent

Families Citing this family (11)

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Publication number Priority date Publication date Assignee Title
JP4606640B2 (ja) * 2001-05-08 2011-01-05 三菱電機株式会社 回転電機
JP3828015B2 (ja) * 2002-01-08 2006-09-27 三菱電機株式会社 永久磁石形モータ及び永久磁石形モータの製造方法及び圧縮機及び冷凍サイクル装置
DE102004012743A1 (de) * 2004-03-15 2005-10-06 Thyssenkrupp Transrapid Gmbh Magnetanordnung für Trag-, Führ- und/oder Bremssysteme bei Magnetschwebefahrzeugen
FR2894403A1 (fr) * 2005-12-02 2007-06-08 Leroy Somer Moteurs Machine electrique tournante a ondulations de couple reduites
JP2006345692A (ja) * 2006-08-28 2006-12-21 Mitsubishi Electric Corp 永久磁石形モータ
JP5516068B2 (ja) * 2010-05-24 2014-06-11 株式会社デンソー 回転電機
CA2835138C (fr) * 2011-06-30 2019-09-10 Devon R. MCINTOSH Machine pm economique a faible saillance
CN106300714A (zh) * 2016-09-08 2017-01-04 珠海凌达压缩机有限公司 定子铁芯、电机及空调器
ES2820227T3 (es) * 2017-12-28 2021-04-20 Ebara Corp Aparato de bomba, procedimiento de operación de prueba del aparato de bomba, conjunto de motor y procedimiento para identificar la vibración anómala del conjunto de motor
JP2022055707A (ja) * 2020-09-29 2022-04-08 本田技研工業株式会社 回転電機
WO2023175670A1 (fr) * 2022-03-14 2023-09-21 三菱電機株式会社 Stator pour moteur électrique, compresseur et dispositif de climatisation à réfrigération

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139790A (en) * 1977-08-31 1979-02-13 Reliance Electric Company Direct axis aiding permanent magnets for a laminated synchronous motor rotor
US4476408A (en) * 1979-05-23 1984-10-09 General Electric Company High efficiency, low cost permanent magnet AC machine
JPH08251848A (ja) * 1995-01-11 1996-09-27 Yaskawa Electric Corp 永久磁石形同期回転電機のロータ
JPH09201022A (ja) * 1996-01-23 1997-07-31 Brother Ind Ltd 可変リラクタンスモータ
US5670836A (en) * 1994-04-05 1997-09-23 Emerson Electric Co. Variable reluctance start permanent magnet motor
JPH10313584A (ja) * 1997-05-09 1998-11-24 Matsushita Seiko Co Ltd ブラシレスモータの位置検出回路
JPH1198721A (ja) * 1997-09-17 1999-04-09 Toshiba Corp 永久磁石電動機

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139790A (en) * 1977-08-31 1979-02-13 Reliance Electric Company Direct axis aiding permanent magnets for a laminated synchronous motor rotor
US4476408A (en) * 1979-05-23 1984-10-09 General Electric Company High efficiency, low cost permanent magnet AC machine
US5670836A (en) * 1994-04-05 1997-09-23 Emerson Electric Co. Variable reluctance start permanent magnet motor
JPH08251848A (ja) * 1995-01-11 1996-09-27 Yaskawa Electric Corp 永久磁石形同期回転電機のロータ
JPH09201022A (ja) * 1996-01-23 1997-07-31 Brother Ind Ltd 可変リラクタンスモータ
JPH10313584A (ja) * 1997-05-09 1998-11-24 Matsushita Seiko Co Ltd ブラシレスモータの位置検出回路
JPH1198721A (ja) * 1997-09-17 1999-04-09 Toshiba Corp 永久磁石電動機

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2844112A1 (fr) * 2002-08-29 2004-03-05 Mitsubishi Electric Corp Moteur synchrone a aimant permanent
US6882080B2 (en) 2002-08-29 2005-04-19 Mitsubishi Denki Kabushiki Kaisha Permanent magnet synchronous motor

Also Published As

Publication number Publication date
CN1181605C (zh) 2004-12-22
CN1340235A (zh) 2002-03-13
TWI238584B (en) 2005-08-21
JP2000232762A (ja) 2000-08-22

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