HANNOVER MESSE 2019, 01 - 05 April
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Assembly of Power Electronics

Concept Stabilizes Energy Flows and Reduces Inductance.

Logo Karlsruher Institut für Technologie


Karlsruher Institut für Technologie

Exhibitor details
Exhibitor details
Logo Assembly of Power Electronics

Product description

Wherever electricity is produced, transported or used, power electronic components are applied. They are combined into modules, with each module accommodating several components, so-called power semiconductors. These power semiconductors are configured such that energy flow is controlled according to the power demand. For low-loss, power semiconductors are operated in switch mode. The higher the switching frequency, the smaller are the space needed and the weight of such systems. Such compact systems are beneficial in electric drives of electric cars and wind power plants. In order to reach high switching frequencies, however, an undesired property of power modules has to be minimized: the inductance. Inductance causes slower, high-loss switching processes as well as potential damage of power semiconductors right up to total system failures. Conventional power electronic modules have a layer structure: Onto a non-conductive carrier substrate, conductive structures are applied onto which power semiconductor chips are mounted. Modules are connected to external systems via bulky plug or screw contacts. This design produces undesired inductance and hardly any further electronic components can be integrated. Researchers of the KIT developed a novel concept for the design of low-inductance modules. For this purpose, a plate-shaped connection element is applied vertically to the main substrate for connection of the power electronics with the mainframe circuitry. It accommodates both forward and return conductors and connects the components electrically as well as mechanically. The compact design reduces the space required onto the module substrate. By means of this new assembly concept, switching times, cooling effort as well as production times are reduced. The module-specific design of the connection element is subject to hardly any limits. For instance, the connector may act as a capacitor if it consists of several intelaced metallic and ceramic layers.

Product website

Hall 27, Stand K51

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