Verfahren und Vorrichtung zur Überbrückung von kurzzeitigen Netzausfällen bei einem Matrixumrichter

摘要

The invention relates to a method for short-circuiting temporary power failures in a matrix converter (2), and to a device for carrying out said method. According to the invention, in the event of a determined power failure, the matrix converter (2) is separated from the supply network (12) and changes into a buffer mode (P) in which a determined capacitor voltage actual space vector (uCmess) is regulated to a pre-determined space vector. When the power supply is resumed, said capacitor actual space vector (unetzmess) is synchronised, the matrix converter (2) being reconnected to the supply network (12) during the synchronisation. In this way, the kinetic buffering effect can also be carried out by a matrix converter (2).