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:
Nov. 20, 2018
Filed:
May. 30, 2014
Eaton Corporation, Cleveland, OH (US);
Eaton Intelligent Power Limited, Dublin, IE;
Abstract
The present invention provides a V/F control method for an induction motor comprising: extracting a reactive current and an active current and performing a differential calculation on them respectively to obtain a differential of the reactive current and a differential of the active current; multiplying the differential of the reactive current and the differential of the active current by a first coefficient and a second coefficient respectively; obtaining the sum of the result of multiplying the differential of the reactive current by the first coefficient and the result of multiplying the differential of the active current by the second coefficient; applying low-pass filtering on the sum to obtain a compensation; and superposing the compensation onto an original given angular frequency to perform V/F control.