WO2023026658A1 - Brushless motor control device and power supply conversion device - Google Patents

Brushless motor control device and power supply conversion device Download PDF

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Publication number
WO2023026658A1
WO2023026658A1 PCT/JP2022/024926 JP2022024926W WO2023026658A1 WO 2023026658 A1 WO2023026658 A1 WO 2023026658A1 JP 2022024926 W JP2022024926 W JP 2022024926W WO 2023026658 A1 WO2023026658 A1 WO 2023026658A1
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rectifier circuit
input terminal
brushless motor
terminal
circuit input
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PCT/JP2022/024926
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French (fr)
Japanese (ja)
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真一 谷口
康之 ▲高▼森
雅大 丸木
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マブチモーター株式会社
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Publication of WO2023026658A1 publication Critical patent/WO2023026658A1/en

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    • 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
    • H02P6/30—Arrangements for controlling the direction of rotation

Definitions

  • the present disclosure relates to brushless motor control devices and power conversion devices.
  • This application claims priority based on Japanese Patent Application No. 2021-136592 filed in Japan on August 24, 2021, the content of which is incorporated herein.
  • brushless motors do not require brushes or commutators that are in constant contact with each other and wear and deteriorate with use. Therefore, they are widely used in applications requiring durability, quietness, fuel efficiency and/or responsiveness.
  • the brushless motor requires a brushless motor controller that electrically controls the direction of the current.
  • the direction of connection (positive and negative) of the power supply is specified, and if the power supply is connected in the opposite direction to the specified direction, the brushless motor control device may be damaged due to a short circuit or the like.
  • a brushless motor control device In order to switch the motor rotation direction of the brushless motor, a brushless motor control device is generally equipped with a terminal for inputting an external signal indicating the motor rotation direction, in addition to a power supply terminal and a ground terminal. (See Patent Literature 1 or 2, for example).
  • the connection direction of the power supply is not specified, and by changing the connection direction of the power supply, the motor rotation direction can be switched from forward rotation to reverse rotation or vice versa.
  • the motor with a brush has the advantage that it can be handled intuitively because the direction of rotation of the motor can be switched simply by changing the direction of connection of the power supply. If this advantage can be realized with a brushless motor, it will be possible to use it in applications where brushed motors have been heavily used due to their ease of handling. It is desirable because the advantages of high response and high response can be utilized in products to be used.
  • An object of the present disclosure is to provide a brushless motor control device and a power conversion device that can be handled in the same manner as a brushless motor with brushes.
  • One aspect of the present disclosure is a brushless motor control device that controls rotation of a brushless motor, wherein a first rectifier circuit input terminal, a second rectifier circuit input terminal, a first rectifier circuit output terminal, and a second rectifier circuit output terminal are connected to and which of the first rectifier circuit input terminal and the second rectifier circuit input terminal is at a high potential when the first rectifier circuit input terminal and the second rectifier circuit input terminal are connected to a power supply.
  • the first rectifier circuit output terminal has a higher potential than the second rectifier circuit output terminal
  • the first rectifier circuit input terminal has a higher potential than the second rectifier circuit input terminal.
  • a voltage having a pattern for rotating the brushless motor in a first direction is generated at a certain time, and the brushless motor is rotated when the second rectifier circuit input terminal has a higher potential than the first rectifier circuit input terminal.
  • the rectifier circuit is configured by a diode bridge.
  • another aspect of the present disclosure includes a voltage determination circuit that determines which of the first rectifier circuit input terminal and the second rectifier circuit input terminal has a higher potential, and the switching circuit performs the voltage determination.
  • the voltage is generated based on the determination result of the circuit.
  • One aspect of the present disclosure is a power supply that converts a power supply for a brushed motor into a power supply that is supplied to a driver IC of a brushless motor that includes a power supply terminal, a ground connection terminal, and a terminal to which a signal indicating the direction of rotation of the motor is input.
  • a conversion device comprising a first rectifier circuit input terminal, a second rectifier circuit input terminal, a first rectifier circuit output terminal and a second rectifier circuit output terminal, wherein the first rectifier circuit input terminal and the second rectifier circuit input When the terminals are connected to a power supply, the first rectifier circuit output terminal is connected to the second rectifier circuit regardless of which of the first rectifier circuit input terminal and the second rectifier circuit input terminal is at a high potential.
  • FIG. 1 is a diagram showing the configuration of a brushless motor system according to a first embodiment
  • FIG. It is a figure which shows an example of a rectifier circuit. It is a figure which shows an example of a rectifier circuit.
  • FIG. 1 is a diagram showing the configuration of a brushless motor system 1 according to the first embodiment.
  • a brushless motor system 1 includes a brushless motor controller 10 and a brushless motor 11 .
  • the brushless motor control device 10 has an input terminal 12 and an output terminal 13 .
  • the input terminals 12 include a first input terminal 12-1 and a second input terminal 12-2.
  • the output terminals 13 include a first output terminal 13-1, a second output terminal 13-2 and a third output terminal 13-3.
  • a power supply is connected to the input terminal 12, one terminal of the input terminal 12 is supplied with power, and the other terminal is grounded. That is, it is possible to switch which of the potential of the first input terminal 12-1 and the potential of the second input terminal 12-2 is higher according to the connection direction of the power supply.
  • the output terminal 13 is connected to the brushless motor 11 and outputs electric power input to the input terminal 12 to the brushless motor 11 .
  • the rotational direction of the brushless motor is determined by which of the two input terminals 12 is supplied with power. When power is supplied to the first input terminal 12-1, the brushless motor 11 rotates in the first direction, and when power is supplied to the second input terminal 12-2, the brushless motor 11 rotates in the second direction opposite to the first direction. .
  • rotation in the first direction is forward rotation and rotation in the second direction is reverse rotation.
  • the rotation in the first direction may be reverse rotation and the rotation in the second direction may be forward rotation.
  • the brushless motor control device 10 includes a rectifier circuit 20, a voltage determination circuit 15 and a switching circuit 30.
  • the rectifier circuit 20 has a rectifier circuit input terminal 21 (a first rectifier circuit input terminal 21-1 and a second rectifier circuit input terminal 21-2) and a rectifier circuit output terminal 22 (a first rectifier circuit output terminal 22-1 and a second rectifier circuit input terminal 21-2). It has a rectifier circuit output terminal 22-2).
  • the first rectifier circuit input terminal 21-1 is connected to the first input terminal 12-1, and the second rectifier circuit input terminal 21-2 is connected to the second input terminal 12-2.
  • the first rectifier circuit output terminal 22-1 outputs the power supplied to the first rectifier circuit input terminal 21-1 or the second rectifier circuit input terminal 21-2.
  • the second rectifier circuit output terminal 22-2 is always set to the reference potential of the brushless motor control device. That is, the rectifier circuit 20 is a full-wave rectifier circuit.
  • the first rectifier circuit output terminal 22-1 is powered whether the rectifier circuit input terminal 21 to which power is supplied is the first rectifier circuit input terminal 21-1 or the second rectifier circuit input terminal 21-2. Output power.
  • FIG. 2 is a diagram showing an example of the rectifier circuit 20. As shown in FIG.
  • the rectifier circuit 20 is a diode bridge composed of four diodes 23-1 to 23-4. When power is supplied from the first rectifier circuit input terminal 21-1, current flows through the diode 23-1 and is output from the first rectifier circuit output terminal 22-1. When power is supplied from the second rectifier circuit input terminal 21-2, current flows through the diode 23-3 and is output from the first rectifier circuit output terminal 22-1.
  • the voltage determination circuit 15 determines which of the first input terminal 12-1 and the second input terminal 12-2 has a higher voltage.
  • the voltage determination circuit 15 for example, outputs a signal to the first switching circuit input terminal 31-1 based on the voltage of the first input terminal 12-1.
  • the voltage determination circuit 15 outputs a signal '1', for example, when the potential of the first input terminal 12-1 is higher than the potential of the second input terminal 12-2.
  • the voltage determination circuit 15 outputs a signal '0', for example, when the potential of the first input terminal 12-1 is lower than the potential of the second input terminal 12-2.
  • a voltage determination circuit is implemented by, for example, a transistor switch, a comparator, or an operational amplifier. When the voltage determination circuit is implemented by a comparator or an operational amplifier, the voltage determination circuit may be powered by the first rectifier circuit output terminal 22-1 and the second rectifier circuit output terminal 22-2 of the rectifier circuit 20.
  • the switching circuit 30 has a switching circuit input terminal 31 (first switching circuit input terminal 31-1, second switching circuit input terminal 31-2 and third switching circuit input terminal 31-3) and a switching circuit output terminal 32 (first switching circuit input terminal 31-3). It has a switching circuit output terminal 32-1, a second switching circuit output terminal 32-2 and a third switching circuit output terminal 32-3).
  • the voltage determination circuit 15 is connected to the first switching circuit input terminal 31-1.
  • the second switching circuit input terminal 31-2 is connected to the first rectifier circuit output terminal 22-1.
  • the third switching circuit input terminal 31-3 is connected to the second rectifier circuit output terminal 22-2.
  • the switching circuit output terminals 32-1 to 32-3 are connected to the output terminals 13-1 to 13-3, respectively.
  • the switching circuit output terminals 32-1 to 32-3 output U-phase, V-phase, and W-phase voltages of three-phase AC, respectively.
  • the switching circuit 30 changes the pattern of the voltage output from the switching circuit output terminal 32 based on the signal input from the voltage determination circuit 15 . For example, when a signal '1' is input from the voltage determination circuit 15 to the first switching circuit input terminal 31-1, the switching circuit 30 causes the switching circuit output terminal 32 to rotate the brushless motor 11 in the first direction. to output Further, for example, when a signal '0' is input from the voltage determination circuit 15 to the first switching circuit input terminal 31-1, the switching circuit 30 causes the switching circuit output terminal 32 to rotate the brushless motor 11 in the second direction. Output current. Furthermore, the switching circuit 30 changes the motor rotation speed according to the magnitude of the voltage input from the power supply.
  • the switching circuit 30 can be realized, for example, by a circuit called a general driver IC for controlling a brushless motor. That is, the first switching circuit input terminal 31-1 is a terminal to which a signal indicating the direction of rotation of the motor in the driver IC is input.
  • the second switching circuit input terminal 31-2 is a power supply terminal in the driver IC.
  • the third switching circuit input terminal 31-3 is a ground connection terminal in the driver IC.
  • the rectifier circuit 20 and the voltage determination circuit 15 constitute a power converter 40 .
  • the power conversion device 40 converts the power for the motor with brush into the power to be supplied to the switching circuit 30 .
  • the brushless motor control device 10 is connected to the output terminal 13 depending on whether the terminal to which power is supplied is the first input terminal 12-1 or the second input terminal 12-2.
  • the rotation direction of the brushless motor 11 can be switched.
  • the brushless motor control device 10 can switch the rotation direction of the brushless motor simply by changing the connection direction of the power supply without providing a terminal for switching the rotation direction of the brushless motor. That is, by using the brushless motor control device 10, the brushless motor 11 can be handled in the same manner as a motor with brushes.
  • the brushless motor control device 10 is configured by attaching a driver IC attached to the brushless motor 11 to the power conversion device 40 . In other words, any brushless motor 11 can be easily handled in the same way as a brushed motor simply by connecting the power converter 40 to the driver IC.
  • the brushless motor control device 10 can switch the rotation direction according to the connection direction of the power supply in the same manner as the brushed DC motor without increasing the number of terminals. Therefore, by using the brushless motor control device 10 according to the present embodiment, it becomes easy to replace the existing brushed motor with a brushless motor.
  • the rectifier circuit 20 is realized by a diode bridge in the above-described embodiments, it is not limited to this.
  • the rectifier circuit 20 according to another embodiment may be a circuit composed of active elements such as relays and semiconductors.
  • FIG. 3 is a diagram showing an example of the rectifier circuit 20.
  • the rectifier circuit 20 shown in FIG. 3 is composed of diodes 24-1 to 2 and relay circuits 25-1 to 4.
  • the current passes through the diode 24-2 and the switches of the relay circuits 25-1 and 25-3 are turned on.
  • the current input from the first rectifier circuit input terminal 21-1 passes through the relay circuit 25-1 and is output from the first rectifier circuit output terminal 22-1.
  • the switches of the relay circuits 25-4 and 25-2 are turned on to pass through the diode 24-1.
  • the current input from the second rectifier circuit input terminal 21-2 passes through the relay circuit 25-2 and is output from the first rectifier circuit output terminal 22-1.
  • the brushless motor control device 10 does not have to include the voltage determination circuit 15 .
  • the first switching circuit input terminal 31-1 may be directly connected to the first input terminal 12-1.
  • the current output from the switching circuit output terminal 32 is changed based on the comparison between the potential of the first input terminal 12-1 input to the first switching circuit input terminal 31-1 of the switching circuit 30 and the ground potential.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

A brushless control device 10 for controlling the rotation of a brushless motor 11 is provided with a rectifier circuit 20 and a switching circuit 30. In the rectifier circuit 20, regardless of which terminal between a first rectifier circuit input terminal 21-1 and a second rectifier circuit input terminal 21-2 has a high potential, the first rectifier circuit output terminal 22-1 has a higher potential than the second rectifier circuit output terminal 22-2. The switching circuit 30 generates voltage of a pattern that rotates the brushless motor 11 in a first direction when the first rectifier circuit input terminal 21-1 has a higher potential than the second rectifier circuit input terminal 21-2, and generates voltage of a pattern that rotates the brushless motor 11 in a second direction that is the opposite rotation of the first direction when the second rectifier circuit input terminal 21-2 has a higher potential than the first rectifier circuit input terminal 21-1.

Description

ブラシレスモータ制御装置及び電源変換装置Brushless motor controller and power converter
　本開示は、ブラシレスモータ制御装置及び電源変換装置に関する。
　本願は、２０２１年８月２４日に、日本に出願された特願２０２１－１３６５９２号に基づき優先権を主張し、その内容をここに援用する。 The present disclosure relates to brushless motor control devices and power conversion devices.
This application claims priority based on Japanese Patent Application No. 2021-136592 filed in Japan on August 24, 2021, the content of which is incorporated herein.
　ブラシレスモータは、ブラシ付きモータと異なり、常に相互接触して使用による摩耗劣化を伴うブラシやコミュテータが不要であるため、ブラシ付きモータよりも高寿命かつ低騒音であり、さらに、高効率かつ高応答であるので、耐久性、静音性、省燃費性及び／又は応答性が要求される用途に広く使用されている。 Unlike brushed motors, brushless motors do not require brushes or commutators that are in constant contact with each other and wear and deteriorate with use. Therefore, they are widely used in applications requiring durability, quietness, fuel efficiency and/or responsiveness.
　ブラシ付きモータでは、ブラシやコミュテータにより電流の向きを機械的に制御して回転磁界を発生させるが、ブラシレスモータでは、ブラシやコミュテータがないため、電流の向きを電気的に制御して回転磁界を発生させる必要がある。
　したがって、ブラシレスモータでは、電流の向きを電気的に制御するブラシレスモータ制御装置が必要となる。ブラシレスモータ制御装置では、電源の接続（正負）方向が規定されており、電源を規定の向きとは逆に接続すると、短絡などによりブラシレスモータ制御装置が損傷を受けるおそれがある。 Brushed motors generate a rotating magnetic field by mechanically controlling the direction of the current using brushes and commutators. need to occur.
Therefore, the brushless motor requires a brushless motor controller that electrically controls the direction of the current. In the brushless motor control device, the direction of connection (positive and negative) of the power supply is specified, and if the power supply is connected in the opposite direction to the specified direction, the brushless motor control device may be damaged due to a short circuit or the like.
　ブラシレスモータ制御装置には、ブラシレスモータのモータ回転方向を切り替えるために、給電端子と接地端子の他、モータ回転方向を指示する外部信号を入力するための端子が搭載されることが一般的である（例えば、特許文献１又は２を参照）。
　一方、ブラシ付きモータでは、電源の接続方向は規定されておらず、電源の接続方向を変えると、モータ回転方向を正転から逆転に、あるいは逆転から正転に切り替えることができる。 In order to switch the motor rotation direction of the brushless motor, a brushless motor control device is generally equipped with a terminal for inputting an external signal indicating the motor rotation direction, in addition to a power supply terminal and a ground terminal. (See Patent Literature 1 or 2, for example).
On the other hand, in brush motors, the connection direction of the power supply is not specified, and by changing the connection direction of the power supply, the motor rotation direction can be switched from forward rotation to reverse rotation or vice versa.
特開平６－７０５７８号公報JP-A-6-70578 特開２００７－２１５２８１号公報Japanese Patent Application Laid-Open No. 2007-215281
　このように、ブラシ付きモータでは、電源の接続方向を変えるだけでモータ回転方向を切り替えることができるので、直感的な取り扱いが行えるという利点がある。この利点をブラシレスモータで実現することができれば、従来、取り扱いの容易さからブラシ付きモータが重用されている用途でもブラシレスモータを使用することが可能となり、ブラシレスモータの高寿命、低騒音、高効率及び高応答という利点を使用先の製品で活かすことができるので望ましい。
　本開示の目的は、ブラシレスモータのブラシ付きモータと同様の取り扱いを可能とするブラシレスモータ制御装置及び電源変換装置を提供することにある。 In this way, the motor with a brush has the advantage that it can be handled intuitively because the direction of rotation of the motor can be switched simply by changing the direction of connection of the power supply. If this advantage can be realized with a brushless motor, it will be possible to use it in applications where brushed motors have been heavily used due to their ease of handling. It is desirable because the advantages of high response and high response can be utilized in products to be used.
An object of the present disclosure is to provide a brushless motor control device and a power conversion device that can be handled in the same manner as a brushless motor with brushes.
　本開示の一態様は、ブラシレスモータの回転を制御するブラシレスモータ制御装置であって、第１整流回路入力端子、第２整流回路入力端子、第１整流回路出力端子及び第２整流回路出力端子を備え、前記第１整流回路入力端子及び前記第２整流回路入力端子が電源に接続された場合に、前記第１整流回路入力端子及び前記第２整流回路入力端子のいずれが高電位であるかに関わらず、前記第１整流回路出力端子が前記第２整流回路出力端子よりも高電位となる整流回路と、前記第１整流回路入力端子の方が前記第２整流回路入力端子よりも高電位であるときに前記ブラシレスモータを第１方向へ回転させるパターンの電圧を生成し、前記第２整流回路入力端子の方が前記第１整流回路入力端子よりも高電位であるときに前記ブラシレスモータを前記第１方向と反対回りの第２方向に回転させるパターンの電圧を生成する切替回路と、を備える。 One aspect of the present disclosure is a brushless motor control device that controls rotation of a brushless motor, wherein a first rectifier circuit input terminal, a second rectifier circuit input terminal, a first rectifier circuit output terminal, and a second rectifier circuit output terminal are connected to and which of the first rectifier circuit input terminal and the second rectifier circuit input terminal is at a high potential when the first rectifier circuit input terminal and the second rectifier circuit input terminal are connected to a power supply. Regardless, the first rectifier circuit output terminal has a higher potential than the second rectifier circuit output terminal, and the first rectifier circuit input terminal has a higher potential than the second rectifier circuit input terminal. A voltage having a pattern for rotating the brushless motor in a first direction is generated at a certain time, and the brushless motor is rotated when the second rectifier circuit input terminal has a higher potential than the first rectifier circuit input terminal. a switching circuit for generating a pattern of voltages rotating in a second direction opposite to the first direction.
　また、本開示の他の態様は、前記整流回路はダイオードブリッジにより構成されることが好ましい。 Also, in another aspect of the present disclosure, it is preferable that the rectifier circuit is configured by a diode bridge.
　また、本開示の他の態様は、前記第１整流回路入力端子と前記第２整流回路入力端子のうち、どちらが高電位であるか判定する電圧判定回路を備え、前記切替回路は、前記電圧判定回路による判定結果に基づいて電圧を生成することが好ましい。 Further, another aspect of the present disclosure includes a voltage determination circuit that determines which of the first rectifier circuit input terminal and the second rectifier circuit input terminal has a higher potential, and the switching circuit performs the voltage determination. Preferably, the voltage is generated based on the determination result of the circuit.
　本開示の一態様は、ブラシ付きモータ用の電源を、電源端子とグランド接続端子とモータ回転方向を指示する信号が入力される端子とを備えるブラシレスモータのドライバＩＣに供給する電源に変換する電源変換装置であって、第１整流回路入力端子、第２整流回路入力端子、第１整流回路出力端子及び第２整流回路出力端子を備え、前記第１整流回路入力端子及び前記第２整流回路入力端子が電源に接続された場合に、前記第１整流回路入力端子及び前記第２整流回路入力端子のいずれが高電位であるかに関わらず、前記第１整流回路出力端子が前記第２整流回路出力端子よりも高電位となる整流回路と、前記第１整流回路入力端子の電位と前記第２整流回路入力端子の電位のうちどちらが高電位であるかを判定し、判定結果によりモータ回転方向を指示する信号として出力する電圧判定回路と、を備える。 One aspect of the present disclosure is a power supply that converts a power supply for a brushed motor into a power supply that is supplied to a driver IC of a brushless motor that includes a power supply terminal, a ground connection terminal, and a terminal to which a signal indicating the direction of rotation of the motor is input. A conversion device comprising a first rectifier circuit input terminal, a second rectifier circuit input terminal, a first rectifier circuit output terminal and a second rectifier circuit output terminal, wherein the first rectifier circuit input terminal and the second rectifier circuit input When the terminals are connected to a power supply, the first rectifier circuit output terminal is connected to the second rectifier circuit regardless of which of the first rectifier circuit input terminal and the second rectifier circuit input terminal is at a high potential. It is determined which of the rectifier circuit having a higher potential than the output terminal and the potential of the first rectifier circuit input terminal and the potential of the second rectifier circuit input terminal is higher, and the rotation direction of the motor is determined according to the determination result. and a voltage determination circuit that outputs an instruction signal.
　本開示によれば、ブラシレスモータのブラシ付きモータと同様の取り扱いが可能となる。 According to the present disclosure, it is possible to handle a brushless motor in the same way as a brushed motor.
第１の実施形態に係るブラシレスモータシステムの構成を示す図である。1 is a diagram showing the configuration of a brushless motor system according to a first embodiment; FIG. 整流回路の一例を示す図である。It is a figure which shows an example of a rectifier circuit. 整流回路の一例を示す図である。It is a figure which shows an example of a rectifier circuit.
　以下、図面を参照しながら実施形態について詳しく説明する。 The embodiment will be described in detail below with reference to the drawings.
〈第１の実施形態〉
　図１は、第１の実施形態に係るブラシレスモータシステム１の構成を示す図である。ブラシレスモータシステム１は、ブラシレスモータ制御装置１０とブラシレスモータ１１とを備える。
　ブラシレスモータ制御装置１０は、入力端子１２及び出力端子１３を備える。入力端子１２は第１入力端子１２－１及び第２入力端子１２－２を含む。出力端子１３は、第１出力端子１３－１、第２出力端子１３－２及び第３出力端子１３－３を含む。 <First Embodiment>
FIG. 1 is a diagram showing the configuration of a brushless motor system 1 according to the first embodiment. A brushless motor system 1 includes a brushless motor controller 10 and a brushless motor 11 .
The brushless motor control device 10 has an input terminal 12 and an output terminal 13 . The input terminals 12 include a first input terminal 12-1 and a second input terminal 12-2. The output terminals 13 include a first output terminal 13-1, a second output terminal 13-2 and a third output terminal 13-3.
　入力端子１２には電源が接続され、入力端子１２の一方の端子に給電され、もう一方の端子は接地される。つまり、電源の接続方向に応じて第１入力端子１２－１の電位と第２入力端子１２－２の電位のうちどちらが高い電位であるかを切り替えることができる。出力端子１３はブラシレスモータ１１に接続され、入力端子１２に入力される電力をブラシレスモータ１１に出力する。
　２つの入力端子１２のうち、どちらの端子に給電するかによりブラシレスモータの回転方向が決定される。第１入力端子１２－１に給電するときにはブラシレスモータ１１は第１方向に回転し、第２入力端子１２－２に給電するときにはブラシレスモータ１１は第１方向と反対回りの第２方向に回転する。例えば、第１方向の回転は正転であって、第２方向の回転は逆転である。第１方向の回転が逆転であって、第２方向の回転が正転であってもよい。 A power supply is connected to the input terminal 12, one terminal of the input terminal 12 is supplied with power, and the other terminal is grounded. That is, it is possible to switch which of the potential of the first input terminal 12-1 and the potential of the second input terminal 12-2 is higher according to the connection direction of the power supply. The output terminal 13 is connected to the brushless motor 11 and outputs electric power input to the input terminal 12 to the brushless motor 11 .
The rotational direction of the brushless motor is determined by which of the two input terminals 12 is supplied with power. When power is supplied to the first input terminal 12-1, the brushless motor 11 rotates in the first direction, and when power is supplied to the second input terminal 12-2, the brushless motor 11 rotates in the second direction opposite to the first direction. . For example, rotation in the first direction is forward rotation and rotation in the second direction is reverse rotation. The rotation in the first direction may be reverse rotation and the rotation in the second direction may be forward rotation.
　ブラシレスモータ制御装置１０は、整流回路２０、電圧判定回路１５及び切替回路３０を備える。 The brushless motor control device 10 includes a rectifier circuit 20, a voltage determination circuit 15 and a switching circuit 30.
　整流回路２０は、整流回路入力端子２１（第１整流回路入力端子２１－１及び第２整流回路入力端子２１－２）及び整流回路出力端子２２（第１整流回路出力端子２２－１及び第２整流回路出力端子２２－２）を備える。第１整流回路入力端子２１－１は第１入力端子１２－１と接続され、第２整流回路入力端子２１－２は第２入力端子１２－２と接続される。第１整流回路出力端子２２－１は第１整流回路入力端子２１－１又は第２整流回路入力端子２１－２に給電される電力を出力する。第２整流回路出力端子２２－２は常にブラシレスモータ制御装置の基準電位とされる。つまり、整流回路２０は全波整流回路である。 The rectifier circuit 20 has a rectifier circuit input terminal 21 (a first rectifier circuit input terminal 21-1 and a second rectifier circuit input terminal 21-2) and a rectifier circuit output terminal 22 (a first rectifier circuit output terminal 22-1 and a second rectifier circuit input terminal 21-2). It has a rectifier circuit output terminal 22-2). The first rectifier circuit input terminal 21-1 is connected to the first input terminal 12-1, and the second rectifier circuit input terminal 21-2 is connected to the second input terminal 12-2. The first rectifier circuit output terminal 22-1 outputs the power supplied to the first rectifier circuit input terminal 21-1 or the second rectifier circuit input terminal 21-2. The second rectifier circuit output terminal 22-2 is always set to the reference potential of the brushless motor control device. That is, the rectifier circuit 20 is a full-wave rectifier circuit.
　第１整流回路出力端子２２－１は、給電される整流回路入力端子２１が第１整流回路入力端子２１－１であっても第２整流回路入力端子２１－２であっても、給電される電力を出力する。図２は、整流回路２０の一例を示す図である。整流回路２０は、４つのダイオード２３－１～４から構成されるダイオードブリッジである。第１整流回路入力端子２１－１から給電される場合、電流はダイオード２３－１を流れ第１整流回路出力端子２２－１から出力される。第２整流回路入力端子２１－２から給電される場合、電流はダイオード２３－３を流れ第１整流回路出力端子２２－１から出力される。 The first rectifier circuit output terminal 22-1 is powered whether the rectifier circuit input terminal 21 to which power is supplied is the first rectifier circuit input terminal 21-1 or the second rectifier circuit input terminal 21-2. Output power. FIG. 2 is a diagram showing an example of the rectifier circuit 20. As shown in FIG. The rectifier circuit 20 is a diode bridge composed of four diodes 23-1 to 23-4. When power is supplied from the first rectifier circuit input terminal 21-1, current flows through the diode 23-1 and is output from the first rectifier circuit output terminal 22-1. When power is supplied from the second rectifier circuit input terminal 21-2, current flows through the diode 23-3 and is output from the first rectifier circuit output terminal 22-1.
　電圧判定回路１５は、第１入力端子１２－１と第２入力端子１２－２のうちどちらが高電圧であるかを判定する。電圧判定回路１５は、例えば、第１入力端子１２－１の電圧に基づいて第１切替回路入力端子３１－１に信号を出力する。電圧判定回路１５は、例えば、第１入力端子１２－１の電位が第２入力端子１２－２の電位よりも大きいときに、信号'1'を出力する。電圧判定回路１５は、例えば、第１入力端子１２－１の電位が第２入力端子１２－２の電位以下であるときに、信号'0'を出力する。電圧判定回路は、例えばトランジスタスイッチや、コンパレータやオペアンプによって実現される。電圧判定回路がコンパレータやオペアンプによって実現される場合、電圧判定回路の電源は整流回路２０の第１整流回路出力端子２２－１及び第２整流回路出力端子２２－２からとられてよい。 The voltage determination circuit 15 determines which of the first input terminal 12-1 and the second input terminal 12-2 has a higher voltage. The voltage determination circuit 15, for example, outputs a signal to the first switching circuit input terminal 31-1 based on the voltage of the first input terminal 12-1. The voltage determination circuit 15 outputs a signal '1', for example, when the potential of the first input terminal 12-1 is higher than the potential of the second input terminal 12-2. The voltage determination circuit 15 outputs a signal '0', for example, when the potential of the first input terminal 12-1 is lower than the potential of the second input terminal 12-2. A voltage determination circuit is implemented by, for example, a transistor switch, a comparator, or an operational amplifier. When the voltage determination circuit is implemented by a comparator or an operational amplifier, the voltage determination circuit may be powered by the first rectifier circuit output terminal 22-1 and the second rectifier circuit output terminal 22-2 of the rectifier circuit 20. FIG.
　切替回路３０は、切替回路入力端子３１（第１切替回路入力端子３１－１、第２切替回路入力端子３１－２及び第３切替回路入力端子３１－３）及び切替回路出力端子３２（第１切替回路出力端子３２－１、第２切替回路出力端子３２－２及び第３切替回路出力端子３２－３）を備える。
　第１切替回路入力端子３１－１は電圧判定回路１５が接続される。第２切替回路入力端子３１－２は第１整流回路出力端子２２－１と接続される。第３切替回路入力端子３１－３は第２整流回路出力端子２２－２と接続される。切替回路出力端子３２－１～３はそれぞれ出力端子１３－１～３に接続される。切替回路出力端子３２－１～３は、それぞれ三相交流のＵ相、Ｖ相、Ｗ相の電圧を出力する。 The switching circuit 30 has a switching circuit input terminal 31 (first switching circuit input terminal 31-1, second switching circuit input terminal 31-2 and third switching circuit input terminal 31-3) and a switching circuit output terminal 32 (first switching circuit input terminal 31-3). It has a switching circuit output terminal 32-1, a second switching circuit output terminal 32-2 and a third switching circuit output terminal 32-3).
The voltage determination circuit 15 is connected to the first switching circuit input terminal 31-1. The second switching circuit input terminal 31-2 is connected to the first rectifier circuit output terminal 22-1. The third switching circuit input terminal 31-3 is connected to the second rectifier circuit output terminal 22-2. The switching circuit output terminals 32-1 to 32-3 are connected to the output terminals 13-1 to 13-3, respectively. The switching circuit output terminals 32-1 to 32-3 output U-phase, V-phase, and W-phase voltages of three-phase AC, respectively.
　切替回路３０は、電圧判定回路１５から入力される信号に基づいて切替回路出力端子３２から出力する電圧のパターンを変化させる。例えば、電圧判定回路１５から第１切替回路入力端子３１－１に信号'1'が入力されるとき、切替回路３０はブラシレスモータ１１を第１方向に回転させるように切替回路出力端子３２から電流を出力する。また、例えば、電圧判定回路１５から第１切替回路入力端子３１－１に信号'0'が入力されるとき切替回路３０はブラシレスモータ１１を第２方向に回転させるように切替回路出力端子３２から電流を出力する。さらに、切替回路３０は、電源から入力された電圧の大きさに応じて、モータ回転速度を変化させる。例えば、電源から入力された電圧が低いほどモータ回転速度を遅くし、電圧が高いほどモータ回転速度を速くする。すなわち、ブラシ付きモータと同様に入力電圧の大きさに応じたモータ回転速度の制御が可能となっている。もし、入力電圧が変化してもモータ回転速度を一定としたい場合は、ブラシレスモータ制御装置の設定により可能となる。 The switching circuit 30 changes the pattern of the voltage output from the switching circuit output terminal 32 based on the signal input from the voltage determination circuit 15 . For example, when a signal '1' is input from the voltage determination circuit 15 to the first switching circuit input terminal 31-1, the switching circuit 30 causes the switching circuit output terminal 32 to rotate the brushless motor 11 in the first direction. to output Further, for example, when a signal '0' is input from the voltage determination circuit 15 to the first switching circuit input terminal 31-1, the switching circuit 30 causes the switching circuit output terminal 32 to rotate the brushless motor 11 in the second direction. Output current. Furthermore, the switching circuit 30 changes the motor rotation speed according to the magnitude of the voltage input from the power supply. For example, the lower the voltage input from the power supply, the slower the motor rotation speed, and the higher the voltage, the faster the motor rotation speed. That is, it is possible to control the motor rotation speed in accordance with the magnitude of the input voltage, as in the brushed motor. If it is desired to keep the motor rotation speed constant even if the input voltage changes, this can be achieved by setting the brushless motor control device.
　切替回路３０は、例えばブラシレスモータを制御するための一般的なドライバＩＣと呼ばれる回路により実現することができる。つまり、第１切替回路入力端子３１－１は、ドライバＩＣにおけるモータ回転方向を指示する信号が入力される端子である。第２切替回路入力端子３１－２は、ドライバＩＣにおける電源端子である。第３切替回路入力端子３１－３は、ドライバＩＣにおけるグランド接続端子である。 The switching circuit 30 can be realized, for example, by a circuit called a general driver IC for controlling a brushless motor. That is, the first switching circuit input terminal 31-1 is a terminal to which a signal indicating the direction of rotation of the motor in the driver IC is input. The second switching circuit input terminal 31-2 is a power supply terminal in the driver IC. The third switching circuit input terminal 31-3 is a ground connection terminal in the driver IC.
　なお、整流回路２０と電圧判定回路１５とは電源変換装置４０を構成する。電源変換装置４０は、ブラシ付きモータ用の電源を、切替回路３０に供給する電源に変換する。 The rectifier circuit 20 and the voltage determination circuit 15 constitute a power converter 40 . The power conversion device 40 converts the power for the motor with brush into the power to be supplied to the switching circuit 30 .
　以上記載したように、本実施形態に係るブラシレスモータ制御装置１０は給電する端子が第１入力端子１２－１であるか第２入力端子１２－２であるかにより、出力端子１３に接続されるブラシレスモータ１１の回転方向を切り替えることができる。これにより、ブラシレスモータ制御装置１０はブラシレスモータの回転方向を切り替えるための端子を設けることなく、電源の接続方向を変えるだけでブラシレスモータの回転方向を切り替えることができる。すなわち、ブラシレスモータ制御装置１０を使用することにより、ブラシレスモータ１１をブラシ付きモータと同様に取り扱うことが可能となる。特に、ブラシレスモータ制御装置１０は、電源変換装置４０にブラシレスモータ１１に付属するドライバＩＣを取り付けることで構成される。つまり、どのようなブラシレスモータ１１であっても、ドライバＩＣに電源変換装置４０を接続するだけで、容易にブラシ付きモータと同様の取り扱いをすることが可能になる。 As described above, the brushless motor control device 10 according to the present embodiment is connected to the output terminal 13 depending on whether the terminal to which power is supplied is the first input terminal 12-1 or the second input terminal 12-2. The rotation direction of the brushless motor 11 can be switched. As a result, the brushless motor control device 10 can switch the rotation direction of the brushless motor simply by changing the connection direction of the power supply without providing a terminal for switching the rotation direction of the brushless motor. That is, by using the brushless motor control device 10, the brushless motor 11 can be handled in the same manner as a motor with brushes. In particular, the brushless motor control device 10 is configured by attaching a driver IC attached to the brushless motor 11 to the power conversion device 40 . In other words, any brushless motor 11 can be easily handled in the same way as a brushed motor simply by connecting the power converter 40 to the driver IC.
　また、ブラシ付きＤＣモータの回転方向は、端子に対する電源の接続方向により定まるため、モータの回転方向を切り替えるための端子を要しない。これに対し、ブラシレスモータはモータ回転方向を切り替える必要があるため、モータの回転方向を切り替えるための端子が必要である。そのため、ブラシ付きＤＣモータが設けられた既存製品において、ブラシ付きＤＣモータをブラシレスモータに置き換えることが困難だった。これに対して、本実施形態の構成によれば、ブラシレスモータ制御装置１０は、端子を増やすことなく、ブラシ付きＤＣモータと同様に電源の接続方向によって回転方向を切り替えることができる。したがって、本実施形態に係るブラシレスモータ制御装置１０を用いることで、既存製品のブラシ付きモータをブラシレスモータに取り換えることが容易になる。 Also, since the direction of rotation of the brushed DC motor is determined by the direction of connection of the power supply to the terminals, no terminals are required to switch the direction of rotation of the motor. On the other hand, a brushless motor needs a terminal for switching the rotation direction of the motor because it is necessary to switch the rotation direction of the motor. Therefore, it has been difficult to replace the brushed DC motor with a brushless motor in the existing products provided with the brushed DC motor. On the other hand, according to the configuration of the present embodiment, the brushless motor control device 10 can switch the rotation direction according to the connection direction of the power supply in the same manner as the brushed DC motor without increasing the number of terminals. Therefore, by using the brushless motor control device 10 according to the present embodiment, it becomes easy to replace the existing brushed motor with a brushless motor.
〈他の実施形態〉
　以上、図面を参照して一実施形態について詳しく説明してきたが、具体的な構成は上述のものに限られることはなく、要旨を逸脱しない範囲内において様々な設計変更等をすることが可能である。
　例えば、上述した実施形態では整流回路２０はダイオードブリッジにより実現されるが、これに限られない。例えば、他の実施形態に係る整流回路２０は、リレーや半導体などの能動素子により構成される回路であってもよい。 <Other embodiments>
As described above, one embodiment has been described in detail with reference to the drawings, but the specific configuration is not limited to the one described above, and various design changes can be made without departing from the spirit of the invention. be.
For example, although the rectifier circuit 20 is realized by a diode bridge in the above-described embodiments, it is not limited to this. For example, the rectifier circuit 20 according to another embodiment may be a circuit composed of active elements such as relays and semiconductors.
　図３は、整流回路２０の一例を示す図である。図３に示す整流回路２０は、ダイオード２４－１～２及びリレー回路２５－１～４から構成される。
　第１整流回路入力端子２１－１から給電される場合、電流はダイオード２４－２を通り、リレー回路２５－１及びリレー回路２５－３のスイッチがＯＮになる。これにより、第１整流回路入力端子２１－１から入った電流はリレー回路２５－１を通り第１整流回路出力端子２２－１から出力される。第２整流回路入力端子２１－２から給電される場合、リレー回路２５－４及びリレー回路２５－２のスイッチをＯＮにしてダイオード２４－１を通る。これにより、第２整流回路入力端子２１－２から入った電流はリレー回路２５－２を通り第１整流回路出力端子２２－１から出力される。 FIG. 3 is a diagram showing an example of the rectifier circuit 20. As shown in FIG. The rectifier circuit 20 shown in FIG. 3 is composed of diodes 24-1 to 2 and relay circuits 25-1 to 4.
When power is supplied from the first rectifier circuit input terminal 21-1, the current passes through the diode 24-2 and the switches of the relay circuits 25-1 and 25-3 are turned on. As a result, the current input from the first rectifier circuit input terminal 21-1 passes through the relay circuit 25-1 and is output from the first rectifier circuit output terminal 22-1. When power is supplied from the second rectifier circuit input terminal 21-2, the switches of the relay circuits 25-4 and 25-2 are turned on to pass through the diode 24-1. As a result, the current input from the second rectifier circuit input terminal 21-2 passes through the relay circuit 25-2 and is output from the first rectifier circuit output terminal 22-1.
　ブラシレスモータ制御装置１０は、電圧判定回路１５を備えなくてもよい。ブラシレスモータ制御装置１０が電圧判定回路１５を備えないとき、第１切替回路入力端子３１－１は、第１入力端子１２－１に直接接続されてよい。この場合、切替回路３０の第１切替回路入力端子３１－１に入力される第１入力端子１２－１の電位と設置電位との比較に基づいて、切替回路出力端子３２から出力する電流を変化させる。
　なお、前述の実施形態では、電圧のパターンを正転又は逆転に切り替える切替回路３０を含むブラシレスモータ制御装置１０について説明したが、切替回路３０を含まず、整流回路２０と電圧判定回路１５とを備え、ブラシ付きモータ用の電源を、電源端子とグランド接続端子とモータ回転方向を指示する信号が入力される端子とを備えるブラシレスモータのドライバＩＣに供給する電源に変換する電源変換装置４０についても本開示の範囲に含まれる。 The brushless motor control device 10 does not have to include the voltage determination circuit 15 . When the brushless motor control device 10 does not have the voltage determination circuit 15, the first switching circuit input terminal 31-1 may be directly connected to the first input terminal 12-1. In this case, the current output from the switching circuit output terminal 32 is changed based on the comparison between the potential of the first input terminal 12-1 input to the first switching circuit input terminal 31-1 of the switching circuit 30 and the ground potential. Let
In the above-described embodiment, the brushless motor control device 10 including the switching circuit 30 for switching the voltage pattern between normal rotation and reverse rotation was described. A power conversion device 40 for converting power for a brushed motor into power supplied to a driver IC of a brushless motor having a power terminal, a ground connection terminal, and a terminal for inputting a signal indicating the direction of motor rotation. included within the scope of this disclosure.
１　ブラシレスモータシステム、１０　ブラシレスモータ制御装置、１１　ブラシレスモータ、１２　入力端子、１３　出力端子、１５　電圧判定回路、２１　整流回路入力端子、２２　整流回路出力端子、２３、２４　ダイオード、２５　リレー回路、３０　切替回路、３１　切替回路入力端子、３２　切替回路出力端子、４０　電源変換装置 1 brushless motor system, 10 brushless motor controller, 11 brushless motor, 12 input terminal, 13 output terminal, 15 voltage determination circuit, 21 rectifier circuit input terminal, 22 rectifier circuit output terminal, 23, 24 diode, 25 relay circuit, 30 switching circuit, 31 switching circuit input terminal, 32 switching circuit output terminal, 40 power converter

Claims (4)

  1. 　ブラシレスモータの回転を制御するブラシレスモータ制御装置であって、
    　第１整流回路入力端子、第２整流回路入力端子、第１整流回路出力端子及び第２整流回路出力端子を備え、前記第１整流回路入力端子及び前記第２整流回路入力端子が電源に接続された場合に、前記第１整流回路入力端子及び前記第２整流回路入力端子のいずれが高電位であるかに関わらず、前記第１整流回路出力端子が前記第２整流回路出力端子よりも高電位となる整流回路と、
    　前記第１整流回路入力端子の方が前記第２整流回路入力端子よりも高電位であるときに前記ブラシレスモータを第１方向へ回転させるパターンの電圧を生成し、前記第２整流回路入力端子の方が前記第１整流回路入力端子よりも高電位であるときに前記ブラシレスモータを前記第１方向と反対回りの第２方向に回転させるパターンの電圧を生成する切替回路と、
    　を備える、ブラシレスモータ制御装置。     A brushless motor control device for controlling rotation of a brushless motor,
    A first rectifier circuit input terminal, a second rectifier circuit input terminal, a first rectifier circuit output terminal, and a second rectifier circuit output terminal, wherein the first rectifier circuit input terminal and the second rectifier circuit input terminal are connected to a power supply. the first rectifier circuit output terminal is at a higher potential than the second rectifier circuit output terminal regardless of which of the first rectifier circuit input terminal and the second rectifier circuit input terminal is at a higher potential. and a rectifier circuit that becomes
    generating a pattern voltage for rotating the brushless motor in a first direction when the first rectifier circuit input terminal is at a higher potential than the second rectifier circuit input terminal, a switching circuit for generating a pattern voltage for rotating the brushless motor in a second direction opposite to the first direction when the first rectifier circuit input terminal has a higher potential than the first rectifier circuit input terminal;
    A brushless motor control device comprising:
  2. 　前記整流回路はダイオードブリッジにより構成される、
    　請求項１に記載のブラシレスモータ制御装置。     wherein the rectifier circuit is composed of a diode bridge;
    The brushless motor control device according to claim 1.
  3. 　前記第１整流回路入力端子と前記第２整流回路入力端子のうち、どちらが高電位であるか判定する電圧判定回路を備え、
    　前記切替回路は、前記電圧判定回路による判定結果に基づいて電圧を生成する、
    　請求項１又は２に記載のブラシレスモータ制御装置。     a voltage determination circuit that determines which of the first rectifier circuit input terminal and the second rectifier circuit input terminal has a higher potential;
    The switching circuit generates a voltage based on the determination result of the voltage determination circuit.
    The brushless motor control device according to claim 1 or 2.
  4. 　ブラシ付きモータ用の電源を、電源端子とグランド接続端子とモータ回転方向を指示する信号が入力される端子とを備えるブラシレスモータのドライバＩＣに供給する電源に変換する電源変換装置であって、
    　第１整流回路入力端子、第２整流回路入力端子、第１整流回路出力端子及び第２整流回路出力端子を備え、前記第１整流回路入力端子及び前記第２整流回路入力端子が電源に接続された場合に、前記第１整流回路入力端子及び前記第２整流回路入力端子のいずれが高電位であるかに関わらず、前記第１整流回路出力端子が前記第２整流回路出力端子よりも高電位となる整流回路と、
    　前記第１整流回路入力端子の電位と前記第２整流回路入力端子の電位のうちどちらが高電位であるかを判定し、判定結果によりモータ回転方向を指示する信号として出力する電圧判定回路と、
    　を備える、電源変換装置。     A power converter for converting power for a brushed motor into power for supplying to a driver IC of a brushless motor comprising a power terminal, a ground connection terminal, and a terminal for inputting a signal indicating the direction of rotation of the motor,
    A first rectifier circuit input terminal, a second rectifier circuit input terminal, a first rectifier circuit output terminal, and a second rectifier circuit output terminal, wherein the first rectifier circuit input terminal and the second rectifier circuit input terminal are connected to a power supply. the first rectifier circuit output terminal is at a higher potential than the second rectifier circuit output terminal regardless of which of the first rectifier circuit input terminal and the second rectifier circuit input terminal is at a higher potential. and a rectifier circuit that becomes
    a voltage determination circuit that determines which of the potential of the first rectifier circuit input terminal and the potential of the second rectifier circuit input terminal is higher, and outputs a signal indicating the direction of rotation of the motor according to the determination result;
    A power converter, comprising:
PCT/JP2022/024926 2021-08-24 2022-06-22 Brushless motor control device and power supply conversion device WO2023026658A1 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005348480A (en) * 2004-06-01 2005-12-15 Nippon Densan Corp Motor unit and motor device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005348480A (en) * 2004-06-01 2005-12-15 Nippon Densan Corp Motor unit and motor device

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