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1. (WO2018104174) HIGHLY EFFICIENT POWER CONVERTER FOR SINGLE-PHASE SYSTEMS

Pub. No.:    WO/2018/104174    International Application No.:    PCT/EP2017/081211
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Sat Dec 02 00:59:59 CET 2017
IPC: H02M 1/44
H02M 7/5387
H02M 7/487
Applicants: SIEMENS AKTIENGESELLSCHAFT
Inventors: TANNHÄUSER, Marvin
Title: HIGHLY EFFICIENT POWER CONVERTER FOR SINGLE-PHASE SYSTEMS
Abstract:
The invention relates to a power converter circuit for single-phase systems, comprising a first circuit, a second circuit, and a filter circuit, wherein the first circuit has connection contacts for connecting to a direct voltage, between which connection contacts a DC link having a series circuit of two capacitors and, parallel with the DC link, two first half-bridges connected in series are arranged, the DC link is designed as a split DC link and is provided for producing a center point of a DC link voltage at the point located between the capacitors, the potential points between the capacitors and between the first half-bridges are connected to each other, the filter circuit comprises first connection points, between which a series assembly of a first filter inductor, a filter capacitor and a second filter inductor is connected, wherein the first connection points are connected to the center points of the two first half-bridges, the filter circuit comprises second connection points at the points between the filter capacitor and the first filter inductor and between the filter capacitor and the second filter inductor, the second circuit has two parallel second half-bridges, the center points of which form alternating-voltage outputs, the outer potential points of the second half-bridges are connected to the second connection points of the filter circuit.