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:
Aug. 24, 2010
Filed:
Mar. 04, 2009
Antti Kallioniemi, Jokela, FI;
Timo Syrman, Hyvinkaa, FI;
Antti Kallioniemi, Jokela, FI;
Timo Syrman, Hyvinkaa, FI;
Kone Corporation, Helsinki, FI;
Abstract
The invention relates to a method and an arrangement for braking a synchronous motor () used with a frequency converter (). The braking current of the motor () is controlled by connecting only the negative changeover contacts () of the inverter () of the frequency converter () or alternatively by connecting only the positive changeover contacts () of the inverter () of the frequency converter. The arrangement comprises a control (), which is arranged to control in a braking situation only the negative changeover contacts () of the frequency converter () or alternatively only the positive changeover contacts () of the frequency converter ().