Design of electrified turbomachinery for use in modern industrial hybrid powertrains

Whilst the automotive industry has made progress with electrified turbomachinery at the passenger vehicle scale, progress has been slower for heavy duty, on and off-highway, and industrial scale engines. But, the numbers of these engines, and their contribution to carbon emissions and general pollution, are still significant.Through combining high speed electrical machines with turbocharger components to create electrified turbomachinery, it is possible for these users to gain responsiveness, reduce engine start times and reduce emissions. By recovering waste exhaust energy, the electrical power generated can be used to feed hybrid system batteries and motors leading to beneficial reductions in specific fuel consumption, NOx and CO2 emissions. This paper will explore the development of two products that leverage this technology, the electric compressor and electric turbocharger.