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:
Jun. 26, 2012
Filed:
Jan. 25, 2010
Timo Syrman, Hyvinkää, FI;
Ari Kattainen, Hyvinkää, FI;
Timo Syrman, Hyvinkää, FI;
Ari Kattainen, Hyvinkää, FI;
Kone Corporation, Helsinki, FI;
Abstract
The invention relates to a switch arrangement of an electric motor drive (). The electric motor drive comprises safety switches () determined by the safety of the drive, a controlled mechanical brake (), a power supply circuit () of the brake control, a power converter (), which power converter comprises a network rectifier () and a power rectifier () of the motor. The power rectifier of the motor is at least partly implemented with controlled semiconductor switches () arranged into a bridge. The power converter comprises an intermediate circuit () between the network rectifier and the power rectifier of the motor. The switch arrangement comprises normally-open switches () in the intermediate circuit of the power converter ().