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Xiaocan Wang
The Performance Improvements of Self-sensing Control for Permanent Magnet Synchronous Machines
This thesis presents a general solution for the problem of position self-sensing with surface-mounted permanent magnet synchronous machines at zero and low speeds using high frequency signal injection, and introduces two different novel designs of interior permanent magnet synchronous machines with concentrated windings which are attractive to the self-sensing control systemand have been verified by respective experimental results. Furthermore, considering the efficiency optimization, the extra losses in a permanent magnet synchronous machine resulting from the high frequency injection are analyzed. By using the proposed observer-based model predictive torque control scheme, the closed-loop self-sensing technology of a permanent magnet synchronous machine can be achieved.
Schlagwörter: permanent magnet synchronous machines; self-sensing control; efficiency optimization
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