Patent ID: 6862163
Filing Date: 2005-03-01
Classification: H02J,H02M

Abstract:
1. A method for bridging brief power outages in a matrix converter with a plurality of power input side commutation capacitors and a power input side switching unit, the method comprising the steps of: in the event of a detected power outage, immediately disconnecting the matrix converter from the power supply, so that the matrix converter operates in a buffer operating mode; controlling the matrix converter in the buffer operating mode so as to generate at an input of the matrix converter an actual capacitor voltage space vector with a predetermined amplitude and phase angle; when the line power is reestablished, tracking the created actual capacitor voltage space vector during a synchronization phase with respect to a measured actual power line voltage space vector until the actual capacitor voltage space vector and the actual power line voltage space vector coincide; and reconnecting the matrix converter to the power supply.