An insulation monitoring electric circuit of an electric-motor controller, includes: a first voltage sampling circuit and a second voltage sampling circuit; the first voltage sampling circuit is connected to an input anode (+VBUS) of a busbar, an input cathode (PGND) of the busbar and a busbar-voltage sampled-signal (HV_VDC) line, and a busbar-voltage sampled-signal (HV_VDC) line is connected to the electric-motor controller; the second voltage sampling circuit is connected to the input anode (+VBUS) of the busbar, the input cathode (PGND) of the busbar and an insulation-voltage sampled signal (HV_VDC) line, and an insulation-voltage sampled signal (HV_VISO) line is connected to the electric-motor controller; and the electric-motor controller is configured to compare a busbar-voltage value gathered by the first voltage sampling circuit and an insulation-voltage value gathered by the second voltage sampling circuit, and when the busbar-voltage value and the insulation-voltage value are different, emit an insulation monitoring alarming signal.


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    Title :

    Insulation monitoring circuit for motor controller


    Contributors:
    QU YUXIA (author) / WAN FUXIANG (author) / TAN LINGLING (author)

    Publication date :

    2022-09-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein



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