Zf Friedrichshafen Ag

Schaffner Emv Ag

Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Ecpe Engineering Center for Power Electronics Gmbh

Oleg Zeiter

Eckart Hoene

Andre Hausberg

Daniel Fürst

Carsten Wintjen

Jürgen Götte

Steffen Hartmann

Andre Domurat-Linde

Thomas Auspitzer

Thomas Baumann

The discovery concerns a rotor hub cover for a helicopter, whereby the rotor hub cover has been constructed as a rotational body with a dome-shaped cover and the rotor hub cover has performance and control electronic components, characterized by the arrangement of the performance electronic components and the control electronic components on a surface of the internal side or the dome-shaped cover.

Rotor head with integrated electronics for a helicopter

Active EMC filter connectable between an electric power source and an electric load. The filter has capacitors (C&#xd7;N, C&#xd7;U) connected between active conductors of the power source and a star point electric node. A filter capacitor (Cst, CstU) is connected between the star point and ground. A half-bridge has two switching devices (T, T; T, T) connected in cascade between a positive supply voltage and a negative supply voltage. A smoothing circuit (RgN, LgN; RgU, RgU) is connected between a common node of the switching devices and the star point. A control unit (Drive_N, Drive_U) drives the switching devices (T, T; T, T) digitally either in an ON-state or in an OFF-state, such as to limit a leakage current.

Active EMC filter

Growing community of inventors

Berlin, Germany

Oleg Zeiter