The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 27, 2020
Filed:
Dec. 07, 2018
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Joseph V. Kreinbrink, Euclid, OH (US);
James Huang, Cleveland, OH (US);
Joseph S. Klak, Concord Township, OH (US);
Mark S. Ruetty, Mayfield Heights, OH (US);
ROCKWELL AUTOMATION TECHNOLOGIES, INC, Mayfield Heights, OH (US);
Abstract
An apparatus for an alpha trim adjustment includes a phase delay circuit that creates a phase delay for a gate signal for a switching cycle. The gate signal is for a phase of a three-phase, phase shifted alternating current ('AC') input of a multi-pulse motor drive powering a direct current ('DC') motor. The apparatus includes an alpha trim circuit that modifies the phase delay with an alpha trim adjustment to create an adjusted phase delay for the switching cycle, a delay application circuit that applies the adjusted phase delay to the gate signal.