Position sensorless open loop control for motor drives with output filter and transformer

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United States of America Patent

PATENT NO 9054621
APP PUB NO 20140312811A1
SERIAL NO

13868216

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Abstract

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A power converter, control apparatus and methods are presented for driving a permanent magnet motor or other load through a sine wave filter and a transformer, in which inverter output current is controlled using a current-frequency relationship to convert a desired frequency or speed value to a current setpoint, and the inverter output current is regulated to the current setpoint using a control algorithm with a bandwidth below the resonant frequency of the sine wave filter.

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Patent Owner(s)

  • ROCKWELL AUTOMATION TECHNOLOGIES, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Liu, Jingbo Grafton, US 42 432
Nondahl, Thomas Greenfield, US 17 298
Royak, Semyon Orange Village, US 36 683
Schmidt, Peter Franklin, US 296 3308

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