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.:

US 7821221 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 26, 2010

Filed:

Jan. 24, 2006
Applicants:

Henrik Kragh, Skørping, DK;

Bjarne Henriksen, Hedensted, DK;

Inventors:

Henrik Kragh, Skørping, DK;

Bjarne Henriksen, Hedensted, DK;

Assignee:

Grundfos Management a/s, Bjerringbro, DK;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 1/42 (2006.01);
U.S. Cl.
CPC ...
Abstract

The invention relates to a two-phase permanent magnet motor which is controlled by a frequency converter. The frequency converter is advantageously provided with a three-phase inverter having six switches that are controlled in such a manner as to minimize switching losses.


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