Powertrain modularity

The target of this deliverable is to define the basic sizes (continuous and peak torque and power ratings, mass, expected available packaging envelopes) of the investigated components and systems for case studies. Furthermore, a set of integrated EM-TECH corner modules and on-board electric drive solutions for electric vehicles are defined to cover the widest possible range of vehicle segments. This deliverable also describes the associated machine control such as the cooling control and the inverter control for the new machines, and the vehicle controls to exploit the benefits to vehicle performance brought by the new machines, including the wheel slip control, the motor regenerative braking and braking blending, and the anti-jerk control.

This paper outlines the main innovations of the EM-TECH and HighScape projects, targeting a wide range of vehicle applications, including passenger cars and commercial vehicles. Specifically, EM-TECH deals with: i) modular designs of on-board axial flux machines (AFMs) for reducing the implementation costs of scalable centralised powertrains for electric axle (e-Axle) solutions; ii) in-wheel motors (IWMs) integrated with electric gearing, for expanding the high efficiency region of electric corner (e-Corner) powertrains; and iii) the use of permanent magnets deriving from recycling processes to improve sustainability. In parallel, HighScape targets the physical and functional integration of the PE of WBG based traction inverters, onboard chargers, DC/DC converters, and electric drives for auxiliaries and actuators.