DISTRIBUTION SYSTEM FOR ELECTRICAL POWER

摘要

The present invention relates to an arrangement for DC power distribution. A preferred embodiment of the invention combines a "three-phase" (three conductors) DC distribution channel (4) and two series connected Voltage Source Inverters (9), each pair supplying a consumer e.g. a two-winding electrical motor (10). The DC distribution channel may be supplied with electrical power through a AC-DC converter consisting two three-core transformers (1) each connected to a rectifier-bridge (3). This embodiment, as well as for other variations of the invention, increases the DC voltage and may achieve sufficient high voltage levels for use in power distribution. Thus, this kind of DC arrangement will be in preference to AC arrangements because of the significant limitation regarding length of cables of last mentioned arrangements, and because DC power distribution networks in less degree having the need of heavy components compared to comparable AC solutions.