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. 19, 2020
Filed:
Jun. 27, 2014
Applicants:
Eaton Corporation, Cleveland, OH (US);
Yilun Chen, Shanghai, CN;
Xiaomeng Cheng, Shanghai, CN;
Inventors:
Yilun Chen, Shanghai, CN;
Xiaomeng Cheng, Shanghai, CN;
Assignee:
EATON INTELLIGENT POWER LIMITED, Dublin, IE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 49/06 (2006.01); F04B 17/03 (2006.01); F04B 49/08 (2006.01); F04B 49/20 (2006.01);
U.S. Cl.
CPC ...
F04B 49/06 (2013.01); F04B 17/03 (2013.01); F04B 49/065 (2013.01); F04B 49/08 (2013.01); F04B 49/20 (2013.01); F04B 2203/0201 (2013.01); F04B 2203/0204 (2013.01); F04B 2205/13 (2013.01);
Abstract
A control system and method of a VFD-based pump. The control system controls an electric motor via a VFD, and the electric motor drives the pump. The control system comprises: an anti-ripple injection module for injecting an anti-ripple signal into a control path, the anti-ripple signal causing pressure ripples in the pump output to be at least partially cancelled. Further a pump system, comprising: a VFD, an electric motor, and a pump, wherein the VFD comprises the control system stated above.