High Power Density, 48V Electrified Drivetrain Technology for Future Hybrid and Electric Vehicles 2019-26-0034
A duplex 3-phase (6-phase with 2 star-points) eMachine and
associated inverter, including the development of the control
algorithm, for a P2 hybrid vehicle was developed. The requirements,
relating to power and duty cycle, flow down from the vehicle to the
eMachine: these are shown and design issues relating to the use of a
48V system presented. The focus on low cost, compact solutions runs
through the work. The inverter is rated at 25kW to drive an interior
permanent magnet eMachine, supplied by a 48V dc-link. The focus of
the work presented in this paper is the inverter controller development
and powertrain sizing. The test results of the eMachine with the
inverter are presented to show the drive system operating the 6-phase
current controller and inverter.
William Drury, Chintanbhai Patel, Andrew Atkins, Anthony Wearing
Ricardo UK, Ltd.
Symposium on International Automotive Technology 2019