PROBLEM TO BE SOLVED: To solve such a problem of the driver of a three-phase synchronous motor that when one of two rotational position detectors fails, more than two rotational position detectors are required for specifying a rotational position detector in a state of failure where the output from the rotational position detector is abnormal, and thereby the cost of the rotational position detector increases.SOLUTION: Abnormality of a rotational position detector is detected by comparing the outputs from two rotational position detectors (41, 42). The abnormal rotational position detector is specified by rotational position estimation means (2). Drive of a three-phase synchronous motor is controlled using the output θ from any one of first or second normal rotational position detector.SELECTED DRAWING: Figure 1

    【課題】三相同期電動機の駆動装置において、2つある回転位置検出器の一方が故障した時、回転位置検出器の出力が異常であり故障している状態の回転位置検出器を特定するために、3つ以上の回転位置検出器が必要となり、回転位置検出器のコストが増大するという課題がある。【解決手段】2つある回転位置検出器(41、42)の出力を比較することで、回転位置検出器の異常を検出する。そして、回転位置推定手段(2)により、異常である回転位置検出器を特定する。第1と第2のいずれか一方の正常な回転位置検出器の出力θを用いて、三相同期電動機の駆動を制御する。【選択図】図1


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    Title :

    DRIVER OF THREE-PHASE SYNCHRONOUS MOTOR


    Additional title:

    三相同期電動機の駆動装置


    Contributors:

    Publication date :

    2017-01-19


    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 / G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein



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