To suppress a surge voltage when turning off a switching element during execution of three-phase short circuit control.SOLUTION: A vehicle drive control device 100 comprises: a first cancel processing unit 314 that, if a rotational speed RS is equal to a speed threshold value RTH or less during execution of three-phase short circuit control by a motor driver 14, when a current value flowing in one coil of current values IU, IV, and IW flowing in three motor coils 15U, 15V, and 15W of a three-phase motor 15 is larger than zero and equal to or lower than a first threshold value TH1 which is larger than zero, turns off a MOSFET on minus side corresponding to the one coil; and a second cancel processing unit 315 that, when the current value flowing in two coils excluding the one coil of the three motor coils 15U, 15V, and 15W is equal to a second threshold value TH2 or less, turns off the MOSFET on the minus side corresponding to each of the two coils.SELECTED DRAWING: Figure 2

    【課題】三相短絡制御を実行中にスイッチング素子をオフにするときのサージ電圧を抑制する。【解決手段】車両駆動制御装置100は、モータドライバ14が三相短絡制御を実行中において、回転速度RSが速度閾値RTH以下である場合に、三相モータ15の3つのモータコイル15U、15V、15Wに流れる電流値IU,IV,IWのうち、1つのコイルに流れる電流値が、零より大きい第1閾値TH1以下で、且つ零以上であるときに、前記1つのコイルに対応するマイナス側のMOSFETをオフにする第1解除処理部314と、3つのモータコイル15U、15V、15Wのうち、前記1つのコイルを除く2つのコイルに流れる電流値が、第2閾値TH2以下であるときに、前記2つのコイルの各々に対応する前記マイナス側のMOSFETをオフにする第2解除処理部315と、を備える。【選択図】図2


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    Titel :

    VEHICLE DRIVE CONTROL DEVICE AND METHOD OF CONTROLLING VEHICLE DRIVE CONTROL DEVICE


    Weitere Titelangaben:

    車両駆動制御装置、及び車両駆動制御装置の制御方法


    Beteiligte:
    MORI MASAHIRO (Autor:in) / SHOKAKU ISAO (Autor:in) / KIMURA TSUKASA (Autor:in)

    Erscheinungsdatum :

    2024-03-19


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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