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:
May. 01, 2018
Filed:
Jun. 06, 2016
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Shaofeng Zhang, Songjiang District, CN;
Haihui Lu, Shanghai, CN;
Yogesh P. Patel, Grafton, WI (US);
Ahmed Mohamed Sayed Ahmed, Mequon, WI (US);
Lixiang Wei, Mequon, WI (US);
Richard Lukaszewski, New Berlin, WI (US);
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Abstract
Disclosed examples include power conversion systems, computer readable mediums and methods for mitigating input filter resonance, in which a controller operates an active front end (AFE) rectifier in a first mode to turn a single rectifier switching device on and off and measures a filter voltage or current signal while all of the rectifier switches are off. The controller determines a resonant frequency based on a transient response of the measured voltage or current signal, and selectively adjusts a rectifier control parameter to mitigate filter resonance based on the resonant frequency.