Siemens Aktiengesellschaft

Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Marek Galek

Alexander Hofmann

Manuel Blum

Dirk Malipaard

Benjamin Ruccius

Nadine Ramona Lang

Fabian Lurz

Markus Ziegmann

Thomas Heckel

Hari Suman Naik

Some embodiments may include a multi-stage converter comprising: a branch connected between a positive busbar and a negative busbar; and a control device. The branch has two arms connected in series. The arms each comprise a series circuit including a plurality of two-pole submodules, an energy store, and a communication connection to the control device. The communication connection transmits state of charge of the energy store and a switching instruction for the respective submodule. For at least a subset of the submodules, the communication connection comprises a common communication connection with a plurality of insulation paths having an insulation capability in each case of at most 5 kV.

Modular multi-stage converter

The present disclosure relates to power systems. The teachings thereof may be embodied in power electronic systems. For example, a power electronic system for operating a load may comprise: a number of power modules connected to the load, each comprising at least one switching element and a local actuator; a superordinate controller for actuating the power modules; a device bus connected to the superordinate controller via which the control signals for actuating the power modules are transmitted; the superordinate controller transmitting the control signals in respective messages at predefined intervals of time; wherein all power modules scan a first communication edge of a received message and process it as a common time base of the system.

Power electronic system and method for synchronizing power modules

Growing community of inventors

Polling, Germany

Marek Galek