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:
Oct. 14, 2014
Filed:
Feb. 18, 2011
Applicant:
Henrik Rosendal Andersen, Graasten, DK;
Inventor:
Henrik Rosendal Andersen, Graasten, DK;
Assignee:
Danfoss Drives A/S, Graasten, DK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 6/14 (2006.01); H03K 17/567 (2006.01); H02P 6/20 (2006.01); H02P 1/02 (2006.01); H02P 27/08 (2006.01); H02P 6/18 (2006.01);
U.S. Cl.
CPC ...
H03K 17/567 (2013.01); H02P 6/20 (2013.01); H02P 1/029 (2013.01); H02P 27/08 (2013.01); H03K 2217/0081 (2013.01); H02P 6/18 (2013.01);
Abstract
The present invention relates to a motor controller employing bootstrap-capacitor supplies and in particular to the situation where the bootstrap supplies have to be charged, while the motor controller is connected to a spinning and energized motor. The present invention introduces a method of recharging based on choosing a recharging sequence from a set of recharging sequences, where the choice depends on the state of the connected motor and in particular on the back-EMF voltages of the motor.