Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Antti Kallioniemi0
Ari Kattainen0
Date of Patent
March 1, 2011
Patent Application Number
12572933
Date Filed
October 2, 2009
Patent Citations Received
Patent Primary Examiner
Patent abstract
A fail-safe power control apparatus for supplying power between an energy source (4) and the motor (5) of a transport system is provided. The power control apparatus comprises a power supply circuit (6), which comprises at least one converter (7, 8) containing change-over switches (32). The power control apparatus comprises a control arrangement (24) for controlling the converter change-over switches, a data transfer bus (10), at least two controllers (1, 2) adapted to communicate with each other, and a control arrangement (11) for controlling a first braking device, and possibly a control arrangement (43) for controlling a second braking device.
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