PROBLEM TO BE SOLVED: To provide a lifting magnet work machine in a relatively low cost configuration, capable of effectively using a regenerative electric power discharged from an electromagnet when a lifting magnet is released.SOLUTION: A lifting magnet comprises: an engine; a motor generator mechanically coupled to the engine; an inverter connected to the motor generator; a DC bus connected to the inverter; a drive circuit connected with the DC bus; and a lifting magnet connected with the drive circuit and having an electromagnet generating an electromagnetic attraction force using electric power supplied by the motor generator. The drive circuit controls excitation state of the electromagnet, while the inverter supplies regenerative electric power discharged from the electromagnet through the drive circuit when the lifting magnet is released.SELECTED DRAWING: Figure 4

    【課題】比較的安価な構成で、リフマグの釈放時に電磁石から放出される回生電力を有効活用することが可能なリフティングマグネット作業機械を提供すること。【解決手段】エンジンと、エンジンと機械的に連結される電動発電機と、電動発電機に接続されるインバータと、インバータに接続されるDCバスと、DCバスに接続される駆動回路と、駆動回路に接続され、電動発電機から供給される電力で、電磁吸着力を発生する電磁石を含むリフティングマグネットと、を備え、駆動回路は、電磁石の励磁状態を制御すると共に、インバータは、リフティングマグネットの釈放時、駆動回路を介して電磁石から放出される回生電力を電動発電機に供給する。【選択図】図4


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    Title :

    LIFTING MAGNET WORK MACHINE


    Additional title:

    リフティングマグネット作業機械


    Contributors:

    Publication date :

    2017-07-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern



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