US Patent 9793834 Motor control apparatus and method

Patent 9793834 was granted and assigned to Sevcon on October, 2017 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Sevcon

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

9793834

Date of Patent

October 17, 2017

Patent Application Number

14769901

Date Filed

February 21, 2014

Patent Primary Examiner

‌

Bentsu Ro

Patent abstract

An apparatus for controlling an AC power supply for an electric motor, said AC power supply being derived from a DC voltage. The apparatus comprises a comparer configured to provide a comparison of a modulation index of a motor control signal with a reference value. This current data provider is configured to provide current data based on a torque demand signal; a speed signal indicating the speed of rotation of the AC motor; and an indication of the DC voltage modified on the comparison for control of the motor control signal which is based on the motor current data.