DC link converter

from Wikipedia, the free encyclopedia

A DC link converter , also known as I converter for short , ( Current Source Inverter , CSI for short ) is a converter that is operated with an impressed alternating current (classic three-phase current) from the supplying network. This current is temporarily stored in an inductance (choke). Current intermediate circuit converters are mainly used to operate large electric motors , as they allow energy to be fed back into the network with relatively inexpensive components (power semiconductors). A typical application is, for example, centrifuges, in which the driving motor becomes a generator through deliberate speed changes (braking processes). Braking then allows power to be fed back into the network instead of being converted into heat via braking resistors.

Systems for high-voltage direct current transmission are also predominantly DC link converters. Converters with outputs of over 6400 MW are implemented here.

The voltage intermediate circuit converter is an alternative technology .

literature

  • Ingo Schmidt: DC link converter: design, simulation and mode of operation. VDM Verlag Dr. Müller, Saarbrücken 2008, ISBN 978-3-639-02615-3