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:
Feb. 13, 2007
Filed:
Sep. 16, 2004
Applicants:
Veijo Karppinen, Vaasa, FI;
Risto Komulainen, Klaukkala, FI;
Inventors:
Veijo Karppinen, Vaasa, FI;
Risto Komulainen, Klaukkala, FI;
Assignee:
Vacon OYJ, Vaasa, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 11/00 (2006.01); G01R 31/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and system for the measurement of energy in an alternating-current motor drive containing a frequency converter or an equivalent stepless rotational speed regulator provided with semiconductor switches. In this regulator, the power taken by the motor drive from the mains is determined, and based on the power taken by the motor drive from the mains, the energy taken from the supply mains, especially the accumulated energy consumption after a given instant is determined.