ENGINEERINGNET.EU -- The EV motor system is the smallest of its kind, measuring just half the dimensions of Mitsubishi Electric's existing motor system that uses an external inverter, and loss is below half that of silicon-based systems.
The new motor system is expected to enable manufacturers to develop EVs offering more passenger space and greater energy efficiency.
The newly developed cylinder-shaped inverter matches the diameter of the motor, enabling them to be connected coaxially within a chassis, resulting in a substantial downsizing of the motor system.
All power chips in the inverter are silicon carbide-based, resulting in over 50% reduction of loss compared to the company's silicon-based inverter system.
The size and configuration of the stator and rotator poles were optimized using Mitsubishi Electric's high-level magnetic-design technology. As a result, magnetic efficiency was increased and power output was improved by 5% over previous motors.
The company plans to commercialize the motor system after finalizing other technologies for motor/inverter cooling, downsizing and efficiency.
(picture: Mitsubishi Electric)
BACKGROUNDER
The global demand for EVs and hybrid EVs (HEVs) has been growing in recent years, reflecting increasingly strict regulation of fuel efficiency and growing public interest in saving energy resources and reducing carbon dioxide emissions. As EVs and HEVs require relatively large spaces to accommodate their robust battery systems, there is a strong need to reduce the size and weight of motor systems and other equipment to ensure sufficient room in passenger compartments.
