Siemens Aktiengesellschaft

Airbus Operations Gmbh

Elac Electroacustic Gmbh

Michael Hein

Yi Zhu

Thomas Beckert

Feng Du

Frank Cordes

Shivansh Batra

Henning Scheel

Heiko Schnieders

Winfried M&ouml;ll

J&uuml;rgen Dreyer

Rolf Janke

Wilfried Werner

An electrical network is equipped with feed-in devices, loads, a distribution grid arranged therebetween, at least one semiconductor switch, and at least one electromechanical switch for separating a feed-in device or a load in the event of a fault. The feed-in devices and loads are arranged in groups which are connected together by a busbar and paired semiconductor switches. Each feed-in device and load can be separated from the grid by an electromechanical switch in the event of a fault, and the individual groups of feed-in devices and loads can be separated from one another by the semiconductor switches in the event of a fault in order to prevent cross currents on the busbar.

Electrical network

An electric grid includes feed-ins, loads, and a distribution grid, which is arranged therebetween. The distribution grid comprises at least one busbar and at least one device for opening or closing a DC circuit. The at least one device includes an electric switch for opening or closing the DC circuit, a fault current detector, a trigger unit, a precharging device, and a control unit for automatically closing the electric switch after the precharging process. The electric switch opens the DC circuit via the trigger unit if a fault current is detected by the fault current detector, and the precharging device restores the voltage on the busbar prior to closing the electric switch.

Electric grid and method for operating an electric grid

A vehicle ( ) having a sound-radiating element ( ) for emitting sound waves into a passenger compartment ( ) and having an air duct ( ) for the air conditioning of the passenger compartment ( ), the air duct ( ) having an air duct inner wall ( ) facing the passenger compartment ( ). To reduce the installation space for the sound-radiating element and to simplify the assembly, the sound-radiating element ( ) has the air duct inner wall ( ) and an oscillation exciter ( ) arranged on the air duct inner wall ( ), for exciting oscillation of the air duct inner wall ( ).

Vehicle having a sound-radiating element

Growing community of inventors

Munich, Georgia

Michael Hein