Temoc RodriguezDr. Temoc Rodriguez obtained his Ph.D. degree in Electrical Engineering from the University of Cambridge. He has worked in the field of power electronics for over 20 years, and he is currently Chief Engineer on electric propulsion systems at Ricardo, where he leads electric powertrain programmes. He is currently leading the development of a hydrogen fuel cell system for aerospace propulsion and research on high power Gallium Nitride propulsion inverters.
Liquid hydrogen cooling of electric propulsion system
Liquid hydrogen fuel cells are earmarked as one of the solutions to decarbonize long-haul transportation including aviation. Liquid hydrogen can be used to reject the heat generated by losses in the electric powertrain. To achieve this, the liquid hydrogen is first circulated through the cold plate of the propulsion inverter and then through the cooling jacket of the electric machine. The outgoing hydrogen is then fed to the fuel cell system. This results in a simpler, lighter and more efficient system. The design of the inverter cold plate and the electric machine cooling jacket and their operation are presented.