Motor control device for high frequency AC driven motor

Details Motor control device for high frequency AC driven motor Motor control device for high frequency AC driven motor

1998-11-24

1999-12-28

Salata, Jonathan

Electricity: motive power systems

Induction motor systems

Primary circuit control

318632, A47B 5100

Patent

active

060086173

ABSTRACT:
A motor control device for an AC motor driven by a power converter with a maximum output frequency more than 500 Hz has a digital arithmetic unit which performs current-feed back control of the AC motor up to a maximum output frequency of the power converter, and outputs an AC voltage command to the power converter. The digital arithmetic unit includes a voltage control signal calculating unit for calculating a vector sum of the d-axis current deviation from a first subtracting unit and the q-axis current deviation from a second subtracting unit based on the d-axis and q-axis phases from a phase calculating unit as well as for calculating a d-axis voltage control signal and a q-axis voltage control signal according to the calculated vector sum, and performs current integration control for the d-axis and q-axis using the calculated vector sum as an input value. The AC voltage command is calculated based on the d-axis voltage control signal and the q-axis voltage control signals.

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