To provide an electrically-driven power steering device capable of restraining a reduction of operability of a vehicle, even upon occurrence of abnormality in one system.SOLUTION: An electrically-driven power steering device comprises a motor (12) having a first three-phase winding (121) and a second three-phase winding (121), first and second inverter circuits (107) for supplying power to the first and second three-phase windings, respectively, a booster circuit (103) capable of changing a voltage of power supplied to the first and second inverter circuits, respectively, and drive parts (110, 111) for making the booster circuit supply power of a higher voltage than that before occurrence of abnormality, to an inverter circuit not included in a normal system where the abnormality does not occur, when the abnormality occurs in any of a first system (15) including the first three-phase winding and the first inverter circuit, and a second system (16) including the second three-phase winding and the second inverter circuit.SELECTED DRAWING: Figure 1

    【課題】1系統に異常が発生した場合にも、車両の操縦性が低下することを抑制可能な電動パワーステアリング装置を提供する。【解決手段】本発明に係る電動パワーステアリング装置は、第1の3相巻線(121)及び第2の3相巻線(121)を有するモータ(12)と、第1及び第2の3相巻線に電力をそれぞれ供給する第1及び第2のインバータ回路(107)と、第1及び第2のインバータ回路のそれぞれに供給する電力の電圧を変更可能な昇圧回路(103)と、第1の3相巻線と第1のインバータ回路とを含む第1系統(15)、及び第2の3相巻線と第2のインバータ回路とを含む第2系統(16)のうちの何れかに異常が発生した場合に、異常が発生していない正常系統に含まれるインバータ回路に対し、異常が発生する前より高い電圧の電力を昇圧回路に供給させて駆動する駆動部(110、111)と、を備える。【選択図】図1


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    Title :

    ELECTRICALLY-DRIVEN POWER STEERING DEVICE


    Additional title:

    電動パワーステアリング装置


    Contributors:

    Publication date :

    2019-12-12


    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



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