The present work examines the potential of current oversampling for the sensorless control of synchronous machines. Using linear regression, the current evolution during a switching state is approximated by a straight line. The approximated offset and slope represent low-noise current and current derivative values. Upon this basis, three position estimation techniques are developed and merged in two oppositional hybrid sensorless control methods which demonstrate the advantages of the oversampling.
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The present work examines the potential of current oversampling for the sensorless control of synchronous machines. Using linear regression, the current evolution during a switching state is approximated by a straight line. The approximated offset and slope represent low-noise current and current derivative values. Upon this basis, three position estimation techniques are developed and merged in two oppositional hybrid sensorless control methods which demonstrate the advantages of the oversampli...
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