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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 10734912 B1

PDFFull Text
Date of Patent:
Aug. 04, 2020

Filed:

Aug. 22, 2017

Stator device for a linear motor, linear drive system, and method for operating a stator device

Applicant:

Beckhoff Automation Gmbh, Verl, DE;

Inventors:

Tim Kaulmann, Paderborn, DE;

Uwe Pruessmeier, Lemgo, DE;

Thomas Vorbohle, Rietberg, DE;

Assignee:

Beckhoff Automation GmbH, Verl, DE;

Attorney:

Dorsey & Whitney LLP

Primary Examiner:

Jorge L Carrasquillo

Assistant Examiner:

Devon A Joseph

Int. Cl.
CPC ...
H02M 7/162 (2006.01); H02M 5/458 (2006.01); G01R 19/165 (2006.01); H02P 6/00 (2016.01); H02K 7/12 (2006.01); H02M 7/797 (2006.01); H02K 41/03 (2006.01); H02M 1/32 (2007.01); H02P 25/06 (2016.01); G01R 31/28 (2006.01); G01R 31/34 (2020.01); H02P 3/14 (2006.01); H02P 3/22 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 7/1626 (2013.01); G01R 19/16571 (2013.01); G01R 31/2829 (2013.01); G01R 31/343 (2013.01); H02K 7/125 (2013.01); H02K 41/031 (2013.01); H02M 1/32 (2013.01); H02M 5/4585 (2013.01); H02M 7/797 (2013.01); H02P 6/006 (2013.01); H02P 25/06 (2013.01); H02M 2001/008 (2013.01); H02M 2001/327 (2013.01); H02P 3/14 (2013.01); H02P 3/22 (2013.01);
Abstract

A linear motor comprises a stator, the stator comprising multiple drive coils and an intermediate circuit electrically conductively connected to each drive coil, the intermediate circuit being configured to exchange energy with each drive coil. The drive coils are arranged along the running rail, where at least one slide comprising a magnet acting as a rotor of the linear motor is movably arranged on the running rail. A controller is configured to independently control each drive coil, so that electrical energy is fed from the intermediate circuit into the drive coils, if a measured intermediate circuit voltage is greater or equal to a predetermined intermediate circuit voltage threshold value, where those drive coils are excluded from the feed-in of the electrical energy which are instantaneously being used for driving or braking the at least one slide and/or have a thermal load which exceeds a predetermined thermal load threshold value.

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