07 March 2017

Power Electronics Cooling Calculation at Room Level

Web Seminar


Power electronics is the key component in order to adjust power from renewable energy such as from wind and solar to the grid frequency. The rectifier and the inverter power modules are assembled on power electronics boards. These boards are usually placed together with chokes, switches, cables and cable trays in an enclosure. Setting up CFD calculations at room level means that the model includes the complete enclosure.


We will show flow calculations for the cooling of a complete 2.2 MW frequency converter enclosure. Here the pressure is generated by a radial fan and pushed through filters and grids. These components in the enclosure hardly generate any losses. The power electronics boards are equipped with heat sinks and it must be ensured that the air flow through the heat sink is sufficient. The flow behavior through inductive components like chokes and transformers is much more difficult to assess, as we have to ensure that all thin gaps between the windings are provided enough cooling air flow.


What You Will Learn

  • The definition of the model at room level.
  • Assessing the operating point of the fans (volume flow vs pressure) according to the manufacturer’s fan curves.
  • Assessing the thermal behavior with 3D-CFD flow calculations including heat transfer.
  • Why FloEFD is well suited for the thermal design of power electronics.


Who Should Attend

  • Thermal Engineers
  • Ventilation Engineers
  • Electronics Cabinet Designers
  • Designers and Engineers of Power Electronics
  • Engineering Managers




Wednesday the 29th of March 2017



12.00 PM - 12.45 PM