Magnet flux amount estimation device, synchronous motor driving device, and electric motor car
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United States of America Patent
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Dec 22, 2015
Grant Date -
Aug 21, 2014
app pub date -
Feb 21, 2014
filing date -
Feb 21, 2013
priority date (Note) -
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Abstract
According to one embodiment, a magnet flux amount estimation device includes a magnetic pole position detector configured to detect a magnetic pole position of a permanent magnet synchronous motor including a permanent magnet within a rotor; an inductance-equivalent value determination module configured to determine an inductance-equivalent value of a d-axis corresponding to a determined magnetic pole direction; and a magnet flux amount estimator configured to calculate an estimation value of a magnet flux amount of the permanent magnet, based on the inductance-equivalent value.
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