Enhanced sensorless control of brushless drives using back emf mapping

Markos Tawadros, Jamal Rizk, Mahmood Nagrial

    Research output: Chapter in Book / Conference PaperConference Paper

    Abstract

    ![CDATA[An enhanced inexpensive algorithm is presented in this paper for sensorless control of brushless DC motors (BLDCMs) based on the back emf (BEMF) sensing techniques. The algorithm determines the switching point of power between phases, which is calculated with reasonable accuracy in simple mathematical equations utilizing the slope of the BEMF which is mapped back to reference values. Simulation of the method is presented for verification. Predictably, this eliminates using speed dependant filters, comparators, and the delays called through look up tables after the detection of the zero crossing point (ZCP).]]
    Original languageEnglish
    Title of host publicationProceedings of the International Conference on Mechanical and Electrical Technology, held in Singapore, 10-12 Sep., 2010
    PublisherIEEE
    Pages782-784
    Number of pages3
    ISBN (Print)9781424481026
    DOIs
    Publication statusPublished - 2010
    EventInternational Conference on Mechanical and Electrical Technology -
    Duration: 1 Jan 2010 → …

    Conference

    ConferenceInternational Conference on Mechanical and Electrical Technology
    Period1/01/10 → …

    Keywords

    • brushless drives
    • sensorless control

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