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AssigneeKabushiki Kaisha Yaskawa Denki
InventorsAkira Yamazaki, Shingo Fukumaru
Estimating the term…
A motor control device is provided, which includes a power converter for applying output voltage according to a voltage command to an electric motor, a magnetic flux estimator for estimating a vector of stator magnetic flux of the electric motor based on a difference between the output voltage and a voltage drop caused by a coil resistance of the electric motor, and a phase estimator for estimating a phase of the stator magnetic flux based on the vector of the stator magnetic flux estimated by the magnetic flux estimator. The magnetic flux estimator includes a variable low-pass filter for applying a low-pass filter to the difference at a cut-off frequency according to a frequency of the output voltage, and a phase adjuster for retarding at least one of an output phase of the variable low-pass filter and a phase of the difference before inputted into the variable low-pass filter.
A motor control device, comprising:
A magnetic flux estimating device of an electric motor, comprising:
A method of estimating a magnetic flux of an electric motor, comprising:
Dependencies are inferred from the claim text.