To suppress a rise in component temperature of a component located at or near a power supply line while avoiding excessive current limitation.SOLUTION: A motor control device includes drive elements Q1 to Q6 that are connected in series between a power supply 14 and an electric motor 20 to convert a power supply current output from the power supply 14 into a drive current that flows to the electric motor 20, rotation speed detection units 52, 61, which detect a motor rotation speed Nr of the electric motor 20, an inverter voltage detection unit 54, which detects an inverter voltage applied to an inverter 50, a temperature detection unit 53, which detects a component temperature of a power supply line from the power supply 14 to the drive elements Q1 to Q6 or components disposed in the vicinity thereof, a power supply current upper limit setting unit 42 that sets an upper limit value of the power supply current output by the power supply 14 according to a component temperature, and a drive current limiting unit 43 that limits a drive current flowing to the electric motor according to at least a motor rotation speed, an inverter applied voltage, and an upper limit value.SELECTED DRAWING: Figure 6

    【課題】過剰な電流制限を回避しながら電源ライン又はその近傍に配置された部品の部品温度の上昇を抑制する。【解決手段】モータ制御装置は、電源14と電動モータ20との間に直列に接続されて、電源14から出力される電源電流を電動モータ20に流す駆動電流に変換する駆動素子Q1〜Q6と、電動モータ20のモータ回転速度Nrを検出する回転速度検出部52、61と、インバータ50に印加されるインバータ印加電圧を検出するインバータ印加電圧検出部54と、電源14から駆動素子Q1〜Q6までの電源ライン又はその近傍に配置された部品の部品温度を検出する温度検出部53と、部品温度に応じて電源14が出力する電源電流の上限値を設定する電源電流上限値設定部42と、少なくともモータ回転速度、インバータ印加電圧および上限値に応じて、電動モータに流す駆動電流を制限する駆動電流制限部43を備える。【選択図】図6


    Access

    Download


    Export, share and cite



    Title :

    MOTOR CONTROL DEVICE, ELECTRIC ACTUATOR PRODUCT, AND ELECTRIC POWER STEERING DEVICE


    Additional title:

    モータ制御装置、電動アクチュエータ製品及び電動パワーステアリング装置


    Contributors:

    Publication date :

    2021-08-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B62D MOTOR VEHICLES , Motorfahrzeuge



    MOTOR CONTROL DEVICE, ELECTRIC ACTUATOR PRODUCT, AND ELECTRIC POWER STEERING DEVICE

    TAKASE HIROAKI / MINAKI AKIRA | European Patent Office | 2021

    Free access

    MOTOR CONTROL DEVICE, ELECTRIC ACTUATOR PRODUCT, AND ELECTRIC POWER STEERING DEVICE

    TAKASE HIROAKI / MINAKI AKIRA | European Patent Office | 2021

    Free access

    MOTOR CONTROL DEVICE, ELECTRIC ACTUATOR PRODUCT, AND ELECTRIC POWER STEERING DEVICE

    MIKI YASUTOSHI | European Patent Office | 2022

    Free access

    MOTOR CONTROL DEVICE, ELECTRIC ACTUATOR PRODUCT, AND ELECTRIC POWER STEERING DEVICE

    TAKASE HIROAKI / MINAKI AKIRA | European Patent Office | 2021

    Free access

    MOTOR CONTROL DEVICE, ELECTRIC ACTUATOR PRODUCT AND ELECTRIC POWER STEERING DEVICE

    MIKI YASUTOSHI | European Patent Office | 2020

    Free access