This paper presents a nonintrusive method to automatically identify and compensate for current measurement errors in interior permanent magnet synchronous motor (IPMSM) drives. Each IPM motor has a distinct short-circuit current vs. speed characteristic, which is solely defined by its machine design. By controlling the IPM motor to operate at its steady-state short-circuit current during coasting down, all phases of the IPM motor can be safely short circuited using the inverter without introducing any current transients. Then the d-q axis currents measured by the inverter are compared with the known short-circuit characteristic of the IPM motor. The distortion pattern in the d-q axis currents contains all the information needed to correct for current sensor errors in IPMSM drives.


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    Title :

    Current measurement gain tuning for interior permanent magnet synchronous motor (IPMSM) drives using controlled short circuit tests


    Contributors:
    Cheng, Siwei (author) / Wang, Dong (author) / Chen, Junquan (author)


    Publication date :

    2014-08-01


    Size :

    584200 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English