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WO2018131160A1 - Système de moteur et actionneur - Google Patents

Système de moteur et actionneur Download PDF

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Publication number
WO2018131160A1
WO2018131160A1 PCT/JP2017/001246 JP2017001246W WO2018131160A1 WO 2018131160 A1 WO2018131160 A1 WO 2018131160A1 JP 2017001246 W JP2017001246 W JP 2017001246W WO 2018131160 A1 WO2018131160 A1 WO 2018131160A1
Authority
WO
WIPO (PCT)
Prior art keywords
coil
motor device
bypass circuit
windings
motor
Prior art date
Application number
PCT/JP2017/001246
Other languages
English (en)
Japanese (ja)
Inventor
芳貴 生武
山本　仁史
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2017/001246 priority Critical patent/WO2018131160A1/fr
Publication of WO2018131160A1 publication Critical patent/WO2018131160A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation

Definitions

  • the present invention relates to a DC motor device with a brush and an actuator equipped with the same.
  • a motor in which a coil winding is wound in a distributed winding (hereinafter referred to as a distributed winding motor) always flows through the coil windings of all phases while driving. ing. For this reason, there is little potential difference when energization to the coil winding is switched between phases, and the generation of surge voltage itself is suppressed.
  • the distributed winding motor is changed to a specification that increases the rotational torque, it is necessary to increase the winding diameter and the number of windings. As described above, the performance of the distributed winding motor is determined by its outer dimensions, and thus it is difficult to change the specifications as described above.
  • a motor in which a coil winding is wound in a concentrated winding has a high space factor and can be easily changed to a specification that increases rotational torque.
  • the coil winding is de-energized before and after the coil winding is switched between phases, so a surge voltage is generated at the contact point between the brush and the commutator, etc. Noise is generated. Therefore, in the conventional concentrated winding motor, for example, a snubber circuit as described in Patent Document 1 is connected in parallel to each phase coil winding to reduce the surge voltage.
  • An object of the present invention is to provide a motor device and an actuator that can reduce the size and increase the heat resistance while suppressing the generation of noise due to a surge voltage.
  • the motor device includes a coil section, a commutator, a brush, and a bypass circuit.
  • the coil portion is configured by delta connection of three-phase coil windings each having a plurality of in-phase windings wound in concentrated winding.
  • the commutator has a plurality of segments connected to the coil windings for each phase.
  • the brush contacts the segment and supplies a direct current to the coil winding.
  • the bypass circuit connects the contacts between the in-phase windings between the three phases, and has a higher resistance value than the coil winding.
  • the contact between the in-phase windings wound in concentrated winding is connected between the three phases, and the bypass circuit having a higher resistance value than the coil winding is provided.
  • FIG. 3A is a diagram showing another configuration of the bypass circuit in the first exemplary embodiment.
  • FIG. 3B is a diagram showing still another configuration of the bypass circuit according to Embodiment 1.
  • FIG. 5A is a diagram illustrating another configuration of the bypass circuit according to Embodiment 2.
  • FIG. 5B is a diagram showing still another configuration of the bypass circuit according to Embodiment 2. It is sectional drawing which shows the structure of the actuator provided with the motor apparatus which concerns on this invention.
  • FIG. 1 is a diagram showing a configuration of a motor device 1 according to Embodiment 1 of the present invention.
  • the motor device 1 is a motor with a brush, and mainly includes a coil unit 2, a bypass circuit 3, a commutator 4, and a brush 5.
  • the motor device 1 is driven and controlled by an H-bridge drive circuit 6.
  • the coil section 2 is configured by delta connection of three-phase coil windings 2a to 2c each having a plurality of in-phase windings wound in concentrated winding.
  • the U-phase includes in-phase windings U1 and U2
  • the V-phase includes in-phase windings V1 and V2
  • the W-phase includes in-phase windings W1 and W2.
  • Winding U1 and winding U2 are connected by contact a
  • winding V1 and winding V2 are connected by contact b
  • winding W1 and winding W2 are connected by contact c.
  • the bypass circuit 3 has a higher resistance value than the coil windings 2a to 2c, and connects the contacts a to c between the in-phase windings to each other between the three phases.
  • resistors R1 to R3 connect the contacts a to c between the in-phase windings with each other by star connection. In the star connection, the resistor R1 connected to the contact a, the resistor R2 connected to the contact b, and the resistor R3 connected to the contact c are connected at a neutral point.
  • the commutator 4 has segments 4a to 4c connected to the coil windings 2a to 2c for each phase.
  • the segment 4a is connected to the coil winding 2a and the coil winding 2b
  • the segment 4b is connected to the coil winding 2a and the coil winding 2c
  • the segment 4c is connected to the coil winding 2b and the coil winding. It is connected to the line 2c.
  • the brush 5 contacts the segments 4a to 4c of the commutator 4 that rotates together with the motor shaft, and supplies a direct current to the coil winding via the contacted segment. As the motor shaft rotates, the direction of the current supplied to the coil windings 2a to 2c changes and the polarity also changes.
  • the H-bridge drive circuit 6 is a circuit that supplies a drive current to the coil windings 2a to 2c via the brush 5.
  • the H-bridge drive circuit 6 is provided in an electronic control unit (ECU) of the vehicle.
  • FIG. 2 is a diagram illustrating a configuration of a conventional motor device 100.
  • the motor device 100 mainly includes a coil unit 2, snubber circuits 101a to 101c, a commutator 4, and a brush 5, and is driven and controlled by an H-bridge drive circuit 6.
  • the snubber circuits 101a to 101c are circuits in which a resistor and a capacitor are connected in series. As shown in FIG. 2, the snubber circuit 101a is connected in parallel to the coil winding 2a, the snubber circuit 101b is connected in parallel to the coil winding 2b, and the snubber circuit 101c is connected in parallel to the coil winding 2c.
  • the energization to the coil winding is interrupted before and after the energization is switched from the plus connection period to the coil winding to the minus connection period.
  • a surge voltage is generated mainly at the contact portion between the commutator 4 and the brush 5, and noise to the H-bridge drive circuit 6 is generated due to the surge voltage.
  • the snubber circuits 101a to 101c energy generated by such a surge voltage is stored in a capacitor, and the surge voltage stored in the capacitor is consumed by a resistor to reduce the surge voltage.
  • the surge voltage reduction effect of the snubber circuits 101a to 101c depends on the capacitance of the capacitor. For this reason, in order to improve the above effect, it is necessary to increase the capacitance of the capacitor, and the size of the capacitor also increases. In addition, the heat resistance of the capacitor limits its use in a high temperature environment such as a vehicle engine.
  • the motor device 1 employs the bypass circuit 3 instead of the snubber circuits 101a to 101c.
  • the bypass circuit 3 includes resistors R1 to R3, and contacts a to c between the in-phase windings are connected to each other by a star connection. Since each of the resistors R1 to R3 has a resistance value higher than that of the coil windings 2a to 2c, a normal drive voltage is applied to the coil windings 2a to 2c, and a current flows.
  • the bypass circuit 3 including the resistors R1 to R3 is shown, the present invention is not limited to this.
  • the bypass circuit 3-1 shown in FIG. 3A includes choke coils L1 to L3.
  • the bypass circuit 3-2 shown in FIG. 3B includes a series circuit of a choke coil L1 and a resistor R1, a series circuit of a choke coil L2 and a resistor R2, and a series circuit of a choke coil L3 and a resistor R3.
  • the motor device 1 connects the contacts a to c between the in-phase windings wound in concentrated winding to each other between the three phases, and has a higher resistance than the coil windings 2a to 2c.
  • a bypass circuit 3 having a value is provided.
  • the bypass circuit 3 connects the contacts a to c between the in-phase windings with each other by star connection.
  • the bypass circuit 3 is a circuit composed of resistors R1 to R3.
  • the bypass circuit 3-1 composed of a choke coil or a bypass circuit 3-constituted of a series circuit of a choke coil and a resistor. 2 may be adopted.
  • FIG. FIG. 4 is a diagram showing a configuration of a motor device 1A according to Embodiment 2 of the present invention.
  • the motor device 1 ⁇ / b> A is a motor with a brush, and mainly includes a coil unit 2, a bypass circuit 3 ⁇ / b> A, a commutator 4, and a brush 5.
  • the motor device 1A is driven and controlled by the H-bridge drive circuit 6.
  • the bypass circuit 3A is composed of resistors R1 to R3, and contacts a to c between the in-phase windings are connected to each other by a delta connection.
  • the resistors R1 and R2 are connected to the contact a
  • the resistors R1 and R3 are connected to the contact b
  • the resistors R2 and R3 are connected to the contact c.
  • each of the resistors R1 to R3 has a higher resistance value than the coil windings 2a to 2c, a normal drive voltage is applied to the coil windings 2a to 2c, and a current flows.
  • a high voltage such as a surge voltage generated when switching the energization to the coil windings 2a to 2c
  • the current due to this voltage is bypassed to the bypass circuit 3A composed of the resistors R1 to R3.
  • the current flowing through the coil windings 2a to 2c is greatly reduced. Further, the bypassed current is consumed by the resistors R1 to R3. Thereby, it is possible to suppress the occurrence of noise due to the surge voltage by the bypass circuit 3A without using the snubber circuits 101a to 101c.
  • the bypass circuit 3A including the resistors R1 to R3 is shown, the present invention is not limited to this.
  • the bypass circuit 3A-1 shown in FIG. 5A includes choke coils L1 to L3.
  • the generation of noise due to the surge voltage can be suppressed by thermally converting the energy caused by the surge voltage.
  • the bypass circuit 3A-2 shown in FIG. 5B includes a series circuit of a choke coil L1 and a resistor R1, a series circuit of a choke coil L2 and a resistor R2, and a series circuit of a choke coil L3 and a resistor R3. With this configuration, it is possible to suppress the occurrence of noise due to the surge voltage by the functions of both the bypass circuit 3A and the bypass circuit 3A-1.
  • the motor device 1A connects the contacts a to c between the in-phase windings wound in concentrated winding to each other between the three phases, and has a higher resistance than the coil windings 2a to 2c.
  • a bypass circuit 3A having a value is provided.
  • the bypass circuit 3A connects the contacts a to c between the in-phase windings to each other by a delta connection.
  • the bypass circuit 3A is a circuit composed of resistors R1 to R3, but the bypass circuit 3A-1 composed of a choke coil or a bypass circuit 3A-2 composed of a series circuit of a choke coil and a resistor May be adopted.
  • FIG. FIG. 6 is a cross-sectional view showing the structure of the actuator 7 provided with the motor device 1 or 1A, and shows a state in which the actuator 7 is cut in the axial direction.
  • the actuator 7 is an actuator for a turbocharger, and mainly includes the motor device 1 or 1A and an output shaft 8 connected to the turbocharger side. For example, according to the amount of movement of the output shaft 8 in the linear motion direction, the wastegate valve provided in the turbocharger is driven and its opening degree is controlled.
  • the coil part 2 is a coil winding wound around the core 2-1 with concentrated winding, and is provided inside the motor housing 10 together with the NS magnetized magnet 9.
  • the brush 5 supplies a direct current to the coil winding through the contacted segment among the segments of the commutator 4.
  • the power supply terminal 11 is a terminal connected to the brush 5 and supplies power to the brush 5.
  • the commutator 4 is fixed to the motor shaft 12 and rotates integrally with the motor shaft 12.
  • the motor shaft 12 is rotatably supported by a bearing on the output side and the opposite side thereof, and a female screw portion 12a is formed in an inner hole thereof.
  • a male screw portion 8a that is screwed into the female screw portion 12a of the motor shaft 12 is formed.
  • the actuator 7 is used for opening and closing the wastegate valve of the turbocharger, the present invention is not limited to this.
  • the actuator 7 may be applied to a variable nozzle turbocharger to open and close the nozzle vanes.
  • the output shaft 8 of the actuator 7 may be connected to an exhaust gas recirculation valve provided in the vehicle engine to open and close the valve.
  • the actuator 7 includes the motor devices 1 and 1A, and drives the turbocharger valve or the exhaust gas recirculation valve by the rotational force of the motor devices 1 and 1A. By configuring in this way, it is possible to provide the actuator 7 that can obtain the effects described in the first and second embodiments.
  • the motor device according to the present invention can be reduced in size and can improve the heat resistance, and can suppress the generation of a surge voltage by a bypass circuit. It is suitable for the motor apparatus to give.
  • 1,1A motor device 2 coil section, 2-1, core, 2a-2c coil winding, 3,3-1, 3-2, 3A, 3A-1, 3A-2 bypass circuit, 4 commutator, 4a-4c Segment, 5 brush, 6 bridge drive circuit, 7 actuator, 8 output shaft, 8a male thread, 9 magnet, 10 motor housing, 11 power supply terminal, 12 motor shaft, 12a female thread, 100 motor device, 101a to 101c snubber circuit .

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc Machiner (AREA)

Abstract

L'invention concerne un système de moteur (1) pourvu d'un circuit de dérivation (3) reliant les points de connexion (a à c) entre les mêmes enroulements de phase enroulés de manière concentrée les uns par rapport aux autres parmi les trois phases et ayant une valeur de résistance supérieure à celle des enroulements de bobine (2a à 2c).
PCT/JP2017/001246 2017-01-16 2017-01-16 Système de moteur et actionneur WO2018131160A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/001246 WO2018131160A1 (fr) 2017-01-16 2017-01-16 Système de moteur et actionneur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/001246 WO2018131160A1 (fr) 2017-01-16 2017-01-16 Système de moteur et actionneur

Publications (1)

Publication Number Publication Date
WO2018131160A1 true WO2018131160A1 (fr) 2018-07-19

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PCT/JP2017/001246 WO2018131160A1 (fr) 2017-01-16 2017-01-16 Système de moteur et actionneur

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53128706A (en) * 1977-04-15 1978-11-10 Matsushita Electric Works Ltd Commutator for small d.c. motor
JPS5541177A (en) * 1978-09-15 1980-03-22 Matsushita Electric Works Ltd Commutator for miniature dc motor
JP2015180181A (ja) * 2014-02-28 2015-10-08 株式会社日本自動車部品総合研究所 回転電機
WO2016139777A1 (fr) * 2015-03-04 2016-09-09 三菱電機株式会社 Rotor pour moteur muni de balai et moteur embarqué muni de balai

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53128706A (en) * 1977-04-15 1978-11-10 Matsushita Electric Works Ltd Commutator for small d.c. motor
JPS5541177A (en) * 1978-09-15 1980-03-22 Matsushita Electric Works Ltd Commutator for miniature dc motor
JP2015180181A (ja) * 2014-02-28 2015-10-08 株式会社日本自動車部品総合研究所 回転電機
WO2016139777A1 (fr) * 2015-03-04 2016-09-09 三菱電機株式会社 Rotor pour moteur muni de balai et moteur embarqué muni de balai

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