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1. (WO2017036457) CIRCUIT ASSEMBLY FOR LINKING DIFFERENT ELECTRICAL VOLTAGE LEVELS, AS WELL AS CONTROL METHOD

Pub. No.:    WO/2017/036457    International Application No.:    PCT/DE2016/100391
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Thu Sep 01 01:59:59 CEST 2016
IPC: B60L 11/18
B60L 15/00
Applicants: RWTH AACHEN
Inventors: SENOL, Murat
DE DONCKER, Rik W.
Title: CIRCUIT ASSEMBLY FOR LINKING DIFFERENT ELECTRICAL VOLTAGE LEVELS, AS WELL AS CONTROL METHOD
Abstract:
The invention relates to a circuit assembly for linking different electrical voltage levels in a motor vehicle, comprising: an electric machine containing induction coils in a star circuit connection with a star point; a first switch unit containing switch elements for generating an AC voltage for the electric machine from a DC voltage of a first voltage level; a DC voltage of a second voltage level; and a second switch unit for a bidirectional electrical energy flow between the DC voltage of the first voltage level and the DC voltage of the second voltage level, wherein the second switch unit has two switch elements arranged in series in an auxiliary switch branch, wherein the auxiliary switch branch is connected in parallel to the DC voltage of the first voltage level, and each connection of the switch elements is connected to the star point.