  This study analyzes and compares the drivetrain losses of two methods of fuel
cell integration in electric vehicle drivetrains. The first is a conventional
(boosted) two-stage system while the second is a dual inverter based solution.
Each source of drivetrain losses is described by mathematical equations and the
impact of higher order harmonics are observed through circuit model simulation.
The dual inverter system achieves an overall energy efficiency improvement of
5.27% and 10.13% for highway and urban driving compared to the conventional
method. The use of lower voltage rated power modules and lower switching
frequency in the dual inverter system has significantly reduced the switching
losses and improved the driving efficiency.
