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:
Dec. 29, 2020
Filed:
Nov. 10, 2016
Applicant:
Siemens Aktiengesellschaft, Munich, DE;
Inventors:
Hauke Nannen, Nuremberg, DE;
Heiko Zatocil, Nuremberg, DE;
Assignee:
SIEMENS AKTIENGESELLSCHAFT, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 27/06 (2006.01); H02P 6/28 (2016.01); H02P 6/16 (2016.01); H02P 6/20 (2016.01); H02P 6/18 (2016.01); H02P 6/182 (2016.01); H02P 1/46 (2006.01);
U.S. Cl.
CPC ...
H02P 6/28 (2016.02); H02P 1/46 (2013.01); H02P 6/16 (2013.01); H02P 6/18 (2013.01); H02P 6/182 (2013.01); H02P 6/20 (2013.01); H02P 2207/05 (2013.01);
Abstract
In order to achieve the energy efficiency class IE4 defined in IEC standard 60034, it is necessary to operate permanent-magnet synchronous machines directly from the supply system. Since this is not readily possible, soft-starting devices come into consideration as cost-effective solutions. The problem of transmitter-free running up can be split into two component problems: determining the initial rotor angle and running up the machine. The present invention describes a (rotary) transmitter-free starting method with which the motor can be started using a soft-starting device.