Semikron MiniSKiiP IGBT power semiconductor module

Semikron has released its latest MiniSKiiP IGBT power semiconductor module, which is now also available in three-level topology.

The module has a rated current of 4.9 A/cm² and one phase leg per module, enabling the development of compact inverters with output power of up to 85 kVA. The module is characterised by the fast single-screw assembly and optimised for the manufacture of three-level solar inverters and UPS systems.

The rated current per unit of area is up to twice that of other three-level modules. Since no solid busbars are needed between the three phases/modules, more compact inverters can be made. The reverse voltage of the IGBTs and diodes used has been increased to 650 to enable DC link voltages of 900 for 480 three-phase power applications. Each module has a three-level phase leg with sufficient space for 10 power semiconductors each.

Thermal and electrical connection between the module and the heat sink and the driver board is established with a single screw or two screws for rated module currents of up to 150 or 200 A. This means that solder equipment and time-consuming soldering processes are done away with in the assembly stage.

For solar inverter output power of 60 kVA and above, ie, for rated current of 150 A and higher, modules with screw connections were previously used for the busbars.

Using the device, 200 A three-level modules allow the busbars to be replaced with cheaper PCBs in inverters with outputs of up to 85 kVA.