This paper describes online techniques for monitoring the health of the two most sensitive components in power electronic systems, namely electrolytic filtering capacitors and controllable semiconductor switches (i.e. MOSFETs and IGBTs). The paper begins with a brief discussion of the primary failure mechanisms for these two types of components. It then presents an online technique designed to measure capacitor ESR, which is a key indicator of capacitor health. Subsequent sections address similar online approaches for tracking the on-state resistance of MOSFETs and the collector-to-emitter saturation voltage of IGBTs. Experimental results demonstrate the effectiveness of these techniques.


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    Title :

    An on-line fault diagnosis method for power electronic drives


    Contributors:


    Publication date :

    2011-04-01


    Size :

    2541504 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English





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