PROBLEM TO BE SOLVED: To mainly suppress reduction of a drive region of a motor in which a disconnection is determinable, while suppressing an erroneous determination of the disconnection.SOLUTION: Disconnection determination devices (42V, 42W and 40) are configured to determine the disconnection of phase wiring (50) which supplies AC power to an AC motor (10) or of internal wiring (52) of the AC motor to which AC power is supplied from the phase wiring. The disconnection determination device includes: current detection means (42V and 42W) for detecting a current that flows to the phase wiring or the internal wiring; storage means (40) for storing a current that is detected by the current detection means during non-electrification to the AC motor, as a storage value; and determination means (40) which determines the disconnection of the phase wiring or the internal wiring on the basis of comparing a current that is detected by the current detection means during electrification to the AC motor, with the storage value stored by the storage means.SELECTED DRAWING: Figure 1

    【課題】断線の誤判定を抑制しつつ、断線判定可能なモータの駆動領域の縮小を抑制することを主たる目的としている。【解決手段】交流モータ(10)に交流電力を供給する相配線(50)、又は相配線から交流電力が供給される交流モータの内部配線(52)の断線を判定する断線判定装置(42V,42W,40)であって、相配線又は内部配線に流れる電流を検出する電流検出手段(42V,42W)と、交流モータへの非通電時に電流検出手段により検出された電流を記憶値として記憶する記憶手段(40)と、交流モータへの通電時に電流検出手段により検出された電流と、記憶手段により記憶された記憶値との比較に基づいて、相配線又は内部配線の断線を判定する判定手段(40)と、を備えることを特徴とする断線判定装置。【選択図】 図1


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    Title :

    DISCONNECTION DETERMINATION DEVICE


    Additional title:

    断線判定装置


    Contributors:

    Publication date :

    2016-05-12


    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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen



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