Design of a thermal link for a passively cooled mobile shipping container using solid carbon dioxide

Ultra-low frozen food temperatures between -30°C to -60°C are important when shipping high value seafood products to worldwide markets. Maintaining these temperatures using a traditional vapor compression refrigeration cycles becomes increasingly difficult as the span between desired cargo and external temperature increase. Solid CO2 has the capacity to sustain ultra-low frozen temperatures even during hot summer days using a passive, non-mechanical refrigeration system.

Advanced Modulation Techniques for Power Converters and Vehicle Propulsion Systems

The HVDC Research Centre performs innovative research and development in high-voltage DC (HVDC) and power electronic technologies, instrumentation and simulation. HVDC is committed to finding new methods to improve efficiency in equipment usage and electric power flow. One such application is conversion and shaping of voltage waveforms, which is generally referred to as “modulation”.