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WO2019009194A1 - Moteur consécutif - Google Patents

Moteur consécutif Download PDF

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Publication number
WO2019009194A1
WO2019009194A1 PCT/JP2018/024783 JP2018024783W WO2019009194A1 WO 2019009194 A1 WO2019009194 A1 WO 2019009194A1 JP 2018024783 W JP2018024783 W JP 2018024783W WO 2019009194 A1 WO2019009194 A1 WO 2019009194A1
Authority
WO
WIPO (PCT)
Prior art keywords
current
coils
coil
coil group
harmonic
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2018/024783
Other languages
English (en)
Japanese (ja)
Inventor
智哉 上田
祐輔 牧野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nidec Corp
Original Assignee
Nidec Corp
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 Nidec Corp filed Critical Nidec Corp
Priority to CN201890000941.7U priority Critical patent/CN211457032U/zh
Publication of WO2019009194A1 publication Critical patent/WO2019009194A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H02K1/2746—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 arranged with the same polarity, e.g. consequent pole type
    • 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
    • H02K1/14—Stator cores with salient poles
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • 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
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • H02P21/05—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation specially adapted for damping motor oscillations, e.g. for reducing hunting
    • 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
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • H02P21/22—Current control, e.g. using a current control loop
    • 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
    • H02P25/22—Multiple windings; Windings for more than three phases

Definitions

  • the present invention relates to a consistent type motor.
  • Japanese Patent No. 5431 886 discloses a motor provided with a rotor of a consistent pole type structure.
  • a motor provided with a rotor of a consistent pole type structure.
  • a plurality of magnets of one magnetic pole are arranged in the circumferential direction of the rotor core.
  • a salient pole integrally formed on the rotor core is disposed between the magnets, and the salient pole functions as the other magnetic pole.
  • the magnetic flux density of the teeth facing the magnet is smaller than the magnetic flux density of the teeth facing the salient pole, so there is a possibility that the motor may vibrate due to the magnetic unbalance of the rotor. .
  • the motor of Japanese Patent No. 5431 886 comprises current supply means for supplying three-phase excitation current to the coils of the stator.
  • the current supply means implements different current control for each coil group to which three-phase excitation current is supplied. Thereby, the magnitude of the electromagnetic force acting on the teeth is adjusted between the coil groups.
  • the magnetic unbalance of the rotor is suppressed to reduce the motor's low vibration. Is being promoted.
  • the present invention has been made in view of the above problems, and it is an object of the present invention to reduce the magnetic unbalance and realize the low vibration of the motor while suppressing the current control from becoming complicated in the consistent motor. There is.
  • An exemplary consistent motor includes an armature having a plurality of coils arranged in a circumferential direction, and a plurality of magnetic poles and a plurality of pseudo poles alternately arranged in a circumferential direction.
  • a power supply unit that supplies a three-phase alternating current to the plurality of coils, and a control unit that controls an output from the power supply unit.
  • the number of the plurality of coils is a multiple of six.
  • the number of the plurality of magnetic poles is an odd number of 3 or more.
  • the control unit controls a first inverter for controlling a current supplied to a first coil group among the plurality of coils, and a second coil group radially facing the first coil group among the plurality of coils.
  • a second inverter that controls the supplied current.
  • a first harmonic current including a first harmonic current as a main wave current is superimposed on the fundamental wave current of the d-axis current of the first coil group by the first inverter.
  • a second harmonic current including a first harmonic current as a main wave current is superimposed on the fundamental wave current of the d-axis current of the second coil group by the second inverter.
  • the peak values of the three-phase alternating current supplied to the first coil group and the second coil group are the same, and the peak phases are shifted.
  • FIG. 1 is a cross-sectional view of a consistent motor 1 according to an exemplary embodiment of the present invention.
  • the corresponding motor 1 is simply referred to as "motor 1".
  • the motor 1 is an inner rotor type brushless motor.
  • the circumferential direction about the central axis J1 perpendicular to the paper surface in FIG. 1 is simply referred to as “circumferential direction”, and the radial direction about the central axis J1 is simply referred to as “radial direction”. .
  • the motor 1 includes an armature 2, a rotor 3 and a control unit 4.
  • the armature 2 includes a core back portion 21, a plurality of teeth 22, and a plurality of coils 24.
  • the core back portion 21 is a substantially annular portion centered on the central axis J1.
  • the plurality of teeth 22 radially extend radially inward from the core back portion 21.
  • the plurality of teeth 22 are arranged at substantially equal angular intervals in the circumferential direction.
  • the core back portion 21 and the plurality of teeth 22 are, for example, metal members of one connection.
  • the plurality of coils 24 are formed by winding a wire around the plurality of teeth 22 on an insulator (not shown) covering the plurality of teeth 22. Each coil 24 is a concentrated winding coil wound around one tooth 22. The plurality of coils 24 are arranged at substantially equal angular intervals in the circumferential direction. The plurality of coils 24 are three-phase coils. The number of coils 24 is a multiple of 6, preferably 12 or more. In the example shown in FIG. 1, the number of the plurality of coils 24 is twelve.
  • the rotor 3 is disposed radially inward of the armature 2.
  • the rotor 3 includes a shaft 31, a rotor core 32, and a plurality of magnetic poles 33.
  • the shaft 31 is a substantially cylindrical member centered on the central axis J1.
  • the rotor core 32 is a substantially annular member made of magnetic metal.
  • the rotor core 32 is connected to the outer peripheral surface of the shaft 31.
  • the plurality of magnetic poles 33 are magnets fixed to the outer peripheral surface of the rotor core 32.
  • the radially outer poles are the same.
  • the radially outer pole of each magnetic pole 33 is an N pole.
  • the plurality of magnetic poles 33 are arranged at substantially equal angular intervals in the circumferential direction while being separated from each other.
  • the number of the plurality of magnetic poles 33 is an odd number of 3 or more. In the example shown in FIG. 1, the number of the plurality of magnetic poles 33 is five.
  • the motor 1 is a 10P12S motor.
  • the rotor core 32 includes a plurality of convex portions 34 located between the plurality of magnetic poles 33 respectively.
  • Each convex portion 34 is a portion that protrudes outward in the radial direction from the outer peripheral surface of the rotor core 32.
  • the plurality of convex portions 34 are located at substantially the same position in the radial direction as the plurality of magnetic poles 33 and function as pseudo magnetic poles. In the following description, the convex portion 34 is referred to as “pseudo pole 34”.
  • the rotor 3 is a consistent type rotor in which a plurality of magnetic poles 33 and a plurality of pseudo poles 34 are alternately arranged in the circumferential direction.
  • the pseudo pole 34 is also called a salient pole.
  • a three-phase alternating current is supplied from the power supply unit 5 to the plurality of coils 24 of the armature 2 so that torque is generated between the plurality of coils 24 and the plurality of magnetic poles 33 and the plurality of pseudo poles 34. Occur.
  • the rotor 3 rotates about the central axis J1.
  • the control unit 4 controls the output from the power supply unit 5. In other words, the control unit 4 controls the three-phase alternating current supplied to the plurality of coils 24.
  • Control unit 4 includes a first inverter 41 and a second inverter 42.
  • U-phase current is supplied to four coils 24 of the twelve coils 24, V-phase current is supplied to the other four coils 24, and the remaining four coils are supplied.
  • the W-phase current is supplied to 24.
  • U1 to U4 four coils to which U-phase current is supplied are denoted by U1 to U4, and four coils to which V-phase current is supplied are denoted by V1 to V4, and W-phase current is supplied.
  • W1 to W4 are given to the four coils.
  • the coil U1 and the coil U2 are circumferentially adjacent to each other.
  • the coil U3 and the coil U4 are circumferentially adjacent to each other.
  • the coil U1 and the coil U3 oppose each other in the radial direction across the central axis J1.
  • the coil U2 and the coil U4 oppose each other in the radial direction across the central axis J1.
  • the coil U3 is disposed at a position offset by 180 degrees in the circumferential direction from the coil U1.
  • the coil U4 is disposed at a position shifted by 180 degrees in the circumferential direction from the coil U2.
  • Coil V1 is circumferentially adjacent to coil U2 and coil V2.
  • Coil V3 is circumferentially adjacent to coil U4 and coil V4.
  • the coil V1 and the coil V3 oppose each other in the radial direction across the central axis J1.
  • the coil V2 and the coil V4 oppose each other in the radial direction across the central axis J1.
  • the coil V3 is disposed at a position deviated from the coil V1 by 180 degrees in the circumferential direction.
  • the coil V4 is disposed at a position deviated from the coil V2 by 180 degrees in the circumferential direction.
  • the coil W1 is circumferentially adjacent to the coil V2 and the coil W2.
  • the coil W3 is circumferentially adjacent to the coil V4 and the coil W4.
  • the coil W1 and the coil W3 oppose each other in the radial direction across the central axis J1.
  • the coil W2 and the coil W4 oppose each other in the radial direction across the central axis J1.
  • the coil W3 is disposed at a position deviated from the coil W1 by 180 degrees in the circumferential direction.
  • the coil W4 is disposed at a position deviated from the coil W2 by 180 degrees in the circumferential direction.
  • FIG. 3 is a diagram showing a connection state between the plurality of coils U1 to U4, V1 to V4, W1 to W4 and the control unit 4.
  • the coil U1 is electrically connected to the coil U4 adjacent to the radially opposing coil U3.
  • the coil U1 and the coil U4 are connected to the first inverter 41 of the control unit 4.
  • the first inverter 41 controls the current supplied to the coil U1 and the coil U4.
  • the coil U3 is electrically connected to the coil U2 adjacent to the radially opposed coil U1.
  • the coil U2 and the coil U3 are connected to the second inverter 42 of the control unit 4.
  • the second inverter 42 controls the current supplied to the coil U2 and the coil U3.
  • the coil V1 is electrically connected to the coil V4 adjacent to the coil V3 facing in the radial direction.
  • the coil V1 and the coil V4 are connected to the second inverter 42.
  • the second inverter 42 controls the current supplied to the coil V1 and the coil V4.
  • the coil V3 is electrically connected to the coil V2 adjacent to the radially opposing coil V1.
  • the coil V2 and the coil V3 are connected to the first inverter 41.
  • the first inverter 41 controls the current supplied to the coil V2 and the coil V3.
  • the coil W1 is electrically connected to the coil W4 adjacent to the coil W3 facing in the radial direction.
  • the coil W1 and the coil W4 are connected to the first inverter 41.
  • the first inverter 41 controls the current supplied to the coil W1 and the coil W4.
  • the coil W3 is electrically connected to the coil W2 adjacent to the coil W1 facing in the radial direction.
  • the coil W2 and the coil W3 are connected to the second inverter 42.
  • the second inverter 42 controls the current supplied to the coil W2 and the coil W3.
  • the first harmonic current is superimposed on the fundamental wave current of the d-axis current by the three-phase alternating current supplied to coils U1, U4, V2, V3, W1 and W4 by first inverter 41. Ru. Further, the second harmonic current is superimposed on the fundamental wave current of the d-axis current by the three-phase alternating current supplied to the coils U2, U3, V1, V4, W2 and W3 by the second inverter 42.
  • the first harmonic current and the second harmonic current each include a first harmonic current at an electrical angle as a main wave current.
  • the order at the electrical angle of the harmonic current is simply referred to as the "order”.
  • the first harmonic current at electrical angle is simply referred to as "first harmonic current”.
  • the main wave current described above includes the first harmonic of the harmonic currents of the plurality of types of orders. It means a harmonic current of one or more orders which substantially or mainly determines the characteristics of the current and the second harmonic current.
  • the first harmonic current included in each of the first harmonic current and the second harmonic current is, for example, a sinusoidal current.
  • Each of the first harmonic current and the second harmonic current is, for example, a first harmonic current, and substantially does not include a second or higher harmonic current.
  • the fundamental wave current of the above-mentioned d-axis current is a zero-order current substantially not including a harmonic current of the first or higher order.
  • the center of oscillation of the first harmonic current coincides with, for example, the fundamental current of the d-axis current on which the first harmonic current is superimposed.
  • the center of oscillation of the second harmonic current coincides with, for example, the fundamental current of the d-axis current on which the second harmonic current is superimposed.
  • the amplitude of the first harmonic current is the same as the amplitude of the second harmonic current.
  • the phase of the first harmonic current is out of phase with the second harmonic current by 180 degrees in electrical angle. In other words, the first harmonic current is a current in reverse phase of the second harmonic current.
  • FIGS. 4 and 5 show the first harmonic current and the second harmonic current with respect to the d-axis current for U-phase current supplied to coils U1 and U4 and U-phase current supplied to coils U2 and U3. It is a figure which shows the influence by superposition.
  • the horizontal axes in FIGS. 4 and 5 indicate mechanical angles, and the vertical axes indicate current values.
  • a U-phase current supplied to the coils U1 and U4 and the coils U2 and U3 when the first harmonic current and the second harmonic current are not superimposed on the d-axis current is indicated by a solid line 60U.
  • the U-phase current supplied to the coils U1 and U4 is the same as the U-phase current supplied to the coils U2 and U3.
  • the U-phase current indicated by the solid line 60U is referred to as "basic U-phase current 60U".
  • a U-phase current supplied to the coils U1 and U4 when the first harmonic current is superimposed on the d-axis current is indicated by a solid line 61U.
  • a U-phase current supplied to the coils U2 and U3 when the second harmonic current is superimposed on the d-axis current is indicated by a broken line 62U.
  • the U-phase current indicated by a solid line 61U is referred to as "first U-phase current 61U”
  • the U-phase current indicated by a broken line 62U is referred to as "second U-phase current 62U”.
  • the peak position of the first U-phase current 61U supplied to the coils U1 and U4 is shifted to the negative side of the horizontal axis from the peak position of the basic U-phase current 60U by superimposing the first harmonic current on the d-axis current .
  • the peak position means a mechanical angle at which the U-phase current becomes maximum or minimum.
  • the peak values on the positive side and the negative side of the first U-phase current 61U may be the same as or different from the peak values on the positive side and the negative side of the basic U-phase current 60U, respectively.
  • the amplitude of the first U-phase current 61U may be the same as or different from the amplitude of the basic U-phase current 60U.
  • the zero cross position of the first U phase current 61U is the same as the zero cross position of the basic U phase current 60U.
  • the zero cross position means a mechanical angle at which the U-phase current becomes zero.
  • the meanings of the peak position and the zero cross position described above are the same as in the V-phase current and the W-phase current.
  • the peak position of the second U-phase current 62U supplied to the coils U2 and U3 deviates from the peak position of the basic U-phase current 60U to the plus side of the horizontal axis due to the second harmonic current being superimposed on the d-axis current . That is, the peak position of the second U-phase current 62U deviates from the peak position of the basic U-phase current 60U to the opposite side of the peak position of the first U-phase current 61U.
  • the absolute value of the deviation from the basic U-phase current 60U at the peak position of the second U-phase current 62U is equal to the absolute value of the deviation from the basic U-phase current 60U at the peak position of the first U-phase current 61U.
  • the peak values on the positive side and the negative side of the second U-phase current 62U may be the same as or different from the peak values on the positive side and the negative side of the basic U-phase current 60U, respectively.
  • the amplitude of the second U-phase current 62U may be the same as or different from the amplitude of the basic U-phase current 60U.
  • the positive and negative peak values of the second U-phase current 62U are the same as the positive and negative peak values of the first U-phase current 61U, respectively.
  • the amplitude of the second U-phase current 62U is the same as the amplitude of the first U-phase current 61U.
  • the zero cross position of the second U phase current 62U is the same as the zero cross position of the basic U phase current 60U and the zero cross position of the first U phase current 61U.
  • the first U-phase current 61U and the second U-phase current 62U are symmetrical about a straight line parallel to the vertical axis through the peak position of the basic U-phase current 60U.
  • the coils U1 and U4 face the magnetic poles 33 of the rotor 3 in the radial direction, and the coils U2 and U3 face the pseudo poles 34 in the radial direction.
  • U4 is supplied with the peak value of the first U-phase current 61U.
  • the second U-phase current 62U controlled by the second inverter 42 is smaller than the peak value, and the coils U2 and U3 are supplied with the second U-phase current 62U.
  • the electromagnetic force acting on the coils U2 and U3 radially opposed to the pseudo pole 34 is smaller than the electromagnetic force acting on the coils U1 and U4 radially opposed to the magnetic pole 33.
  • FIG. 6 is a diagram showing a basic V-phase current 60 V and a basic W-phase current 60 W in addition to the basic U-phase current 60 U described above.
  • FIG. 7 is a diagram showing a first V-phase current 61V and a second V-phase current 62V, and a first W-phase current 61W and a second W-phase current 62W in addition to the first U-phase current 61U and the second U-phase current 62U described above. is there.
  • the horizontal axes of FIGS. 6 and 7 indicate mechanical angles, and the vertical axes indicate current values.
  • the basic V-phase current 60 V and the basic W-phase current 60 W are respectively the V-phase current supplied to the coils V1 to V4 when the first harmonic current and the second harmonic current are not superimposed on the d-axis current, and It is a W-phase current supplied to W1 to W4.
  • the first V phase current 61 V and the second V phase current 62 V are the V phase current supplied to the coils V2 and V3 when the first harmonic current is superimposed on the d axis current, and the second harmonic current in the d axis current It is a V-phase current supplied to the coils V1 and V4 when the current is superimposed.
  • the first W-phase current 61W and the second W-phase current 62W are the W-phase current supplied to the coils W1 and W4 when the first harmonic current is superimposed on the d-axis current, and the second harmonic in the d-axis current It is a W-phase current supplied to the coils W2 and W3 when the current is superimposed.
  • the motor 1 includes the armature 2, the rotor 3, and the control unit 4.
  • the armature 2 has a plurality of coils 24 arranged in the circumferential direction.
  • the plurality of magnetic poles 33 and the plurality of pseudo poles 34 are alternately arranged in the circumferential direction.
  • the control unit 4 controls the three-phase alternating current supplied to the plurality of coils 24.
  • the number of coils 24 is a multiple of six.
  • the number of the plurality of magnetic poles 33 is an odd number of 3 or more.
  • Control unit 4 includes a first inverter 41 and a second inverter 42.
  • coils U1, V3 and W1 among the plurality of coils 24 are collectively referred to as “first coil group U1, V3 and W1”
  • coils U3, V1 and W3 are collectively referred to as "second coil group U3, V1 and V2
  • the first inverter 41 controls the current supplied to the first coil group U1, V3, and W1 among the plurality of coils 24 when called “W3”.
  • the second inverter 42 controls the current supplied to the second coil group U3, V1, W3 radially opposed to the first coil group U1, V3, W1 among the plurality of coils 24.
  • the first inverter 41 includes the first harmonic current including the first harmonic current as the main wave current superimposed on the fundamental wave current of the d-axis current of the first coil group U1, V3, W1. Ru. Further, a second harmonic current including a first harmonic current as a main wave current is superimposed by the second inverter 42 on the fundamental wave current of the d-axis current of the second coil group U3, V1, W3. Then, the peak values of the three-phase alternating current supplied to the first coil group U1, V3, W1 and the second coil group U3, V1, W3 are the same, and the peak phase is shifted.
  • one coil group of the first coil group U1, V3, W1 and the second coil group U3, V1, W3 radially faces the magnetic pole 33, and the other coil group is pseudo pole 34 in the radial direction It is possible to easily realize control to make the current supplied to the one coil group larger than the current supplied to the other coil group, when facing each other. As a result, while suppressing the current control of the three-phase alternating current in the motor 1 from becoming complicated, the magnetic unbalance of the rotor 3 can be reduced, and the vibration reduction of the motor 1 can be realized. Moreover, the electrical angle primary radial force applied to each tooth 22 can also be reduced.
  • the zero cross positions of the three-phase alternating current supplied to the first coil groups U1, V3, W1 and the second coil groups U3, V1, W3 are the same. As a result, compared to the case where the zero-crossing positions are different, complication of current control of the three-phase alternating current in the motor 1 can be further suppressed.
  • the first harmonic current included in the first harmonic current and the second harmonic current is a sinusoidal current.
  • the first harmonic current and the second harmonic current are first harmonic currents.
  • the generation interval of the control signal by the first inverter 41 and the second inverter 42 can be increased as compared with the case where the second harmonic current is included in the first harmonic current and the second harmonic current. it can.
  • current control of the three-phase alternating current in the motor 1 can be facilitated.
  • the accuracy of the above-described current control can be improved by setting the first harmonic current and the second harmonic current as the first harmonic current. it can.
  • the PWM Pulse Width Modulation
  • the number of the plurality of coils 24 is 12 or more.
  • the first coil group U1, V3, W1 is electrically connected to the coil groups U4, V2, W4 adjacent to the second coil group U3, V1, W3 among the plurality of coils 24.
  • the second coil groups U3, V1, and W3 are electrically connected to the coil groups U2, V4, and W2 adjacent to the first coil groups U1, V3, and W1 among the plurality of coils 24.
  • the number of the plurality of coils 24 is twelve, and the number of the plurality of magnetic poles 33 is five, the number of the plurality of magnetic poles 33 is five.
  • the technology for realizing the above-described embodiment has been described, the number of coils 24 and magnetic poles 33 of the motor 1 is not limited to the above example.
  • the above current control by the first inverter 41 and the second inverter 42 is performed. While suppressing the current control of the phase alternating current from becoming complicated, the magnetic unbalance of the rotor 3 can be reduced, and the vibration of the motor 1 can be reduced.
  • the first harmonic current included in the first harmonic current and the second harmonic current does not necessarily have to be a sine wave current, and may be a non-sinusoidal current such as a substantially rectangular wave current.
  • the first harmonic current and the second harmonic current may include harmonic currents of other orders as long as the first harmonic current is included as the main wave current.
  • the first coil groups U1, V3 and W1 do not necessarily have to be electrically connected to the coil groups U4, V2 and W4.
  • the second coil groups U3, V1, and W3 do not necessarily have to be electrically connected to the coil groups U2, V4, and W2.
  • the three-phase alternating current supplied to the first coil group U1, V3, W1 and the second coil group U3, V1, W3 by the control of the first inverter 41 and the second inverter 42 may have different zero cross positions. Even in this case, it is possible to reduce the vibration of the motor 1 while suppressing the current control of the three-phase alternating current from becoming complicated.
  • coil U1, V3 and W1 were made into the 1st coil group among a plurality of coils 24, and coil U3, V1 and W3 were made into the 2nd coil group, and composition and effect of motor 1 were explained.
  • V2 and W4 are the first coil group
  • coils U2, V4 and W2 are the second coil group.
  • the number of the plurality of coils 24 is not limited to 12 and may be a multiple of six. Further, the number of the plurality of magnetic poles 33 is not limited to 5 or 7, and may be an odd number of 3 or more.
  • the motor according to the present invention can be used as a motor for various applications.

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  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

L'invention concerne un moteur consécutif dont le nombre d'une pluralité de bobines est un multiple de 6 et dont le nombre d'une pluralité de pôles magnétiques est un nombre impair supérieur ou égal à 3. Une unité de commande comprend un premier onduleur, qui commande un courant fourni à un premier groupe de bobines parmi la pluralité de bobines, et un second onduleur, qui commande un courant fourni à un second groupe de bobines, radialement opposé au premier groupe de bobines parmi la pluralité de bobines. Un premier courant harmonique, comprenant un courant harmonique primaire en tant que courant d'onde principal, est superposé par le premier onduleur à un courant fondamental d'un courant d'axe d du premier groupe de bobines. Un second courant harmonique, comprenant un courant harmonique primaire en tant que courant d'onde principal, est superposé par le second onduleur à un courant fondamental d'un courant d'axe d du second groupe de bobines. Les valeurs de crête des courants alternatifs triphasés fournis au premier groupe de bobines et au second groupe de bobines sont identiques, et les phases de crête des courants sont décalées les unes par rapport aux autres.
PCT/JP2018/024783 2017-07-03 2018-06-29 Moteur consécutif Ceased WO2019009194A1 (fr)

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CN201890000941.7U CN211457032U (zh) 2017-07-03 2018-06-29 交替型马达

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JP2017130057 2017-07-03
JP2017-130057 2017-07-03

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090021105A1 (en) * 2006-07-12 2009-01-22 Steven Andrew Evans Rotor for an electric machine and production method thereof
JP2011176993A (ja) * 2010-02-25 2011-09-08 Asmo Co Ltd モータ制御装置
WO2015011747A1 (fr) * 2013-07-22 2015-01-29 三菱電機株式会社 Moteur à aimant permanent et dispositif de direction assistée électrique
WO2017085814A1 (fr) * 2015-11-18 2017-05-26 三菱電機株式会社 Moteur électrique et conditionneur d'air

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090021105A1 (en) * 2006-07-12 2009-01-22 Steven Andrew Evans Rotor for an electric machine and production method thereof
JP2011176993A (ja) * 2010-02-25 2011-09-08 Asmo Co Ltd モータ制御装置
WO2015011747A1 (fr) * 2013-07-22 2015-01-29 三菱電機株式会社 Moteur à aimant permanent et dispositif de direction assistée électrique
WO2017085814A1 (fr) * 2015-11-18 2017-05-26 三菱電機株式会社 Moteur électrique et conditionneur d'air

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