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. 29, 2012
Filed:
Jul. 16, 2010
Rangarajan M. Tallam, Germantown, WI (US);
Russel J. Kerkman, Milwaukee, WI (US);
Richard H. Radosevich, Waukesha, WI (US);
Alan J. Campbell, New Berlin, WI (US);
Rangarajan M. Tallam, Germantown, WI (US);
Russel J. Kerkman, Milwaukee, WI (US);
Richard H. Radosevich, Waukesha, WI (US);
Alan J. Campbell, New Berlin, WI (US);
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Abstract
Multiple inverter motor drives are interconnected in parallel to provide a common output to a motor. Common control circuitry is coupled to all parallel drives via optical cables and provides signals to power layer circuitry of each inverter for generation, at the power layer, of timing for gate drive signals for the respective inverter power electronic switches. The resulting timing exhibits a high degree of synchronicity such that very little imbalance occurs in the outputs of the paralleled drives, resulting in very low circulating currents.