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:
Jan. 04, 2005
Filed:
Jun. 28, 2001
Applicants:
Hans-peter Feustel, Roth, DE;
Reinhard Orthmann, Mainz, DE;
Inventors:
Hans-Peter Feustel, Roth, DE;
Reinhard Orthmann, Mainz, DE;
Assignees:
Conti Temic microelectronic GmbH, Nuernberg, DE;
DaimlerChrysler AG, Stuttgart, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02P 318 ;
U.S. Cl.
CPC ...
Abstract
A brushless, synchronous direct current motor is operated by supplying a direct current voltage as an input voltage for commutating the motor phase windings. The speed of the synchronous motor is modified or varied in two speed ranges. In the first speed range, a linear change of the input voltage is carried out up to a speed threshold value. In the second speed range with higher speeds than in the first speed range, a vector modification of the input voltage is carried out, for example for controlling the speed of a fan motor.