Technology Australia CU – Researchers in Australia have drawn inspiration from a South Korean bridge to design a new magnetically driven motor which could significantly bring down the rare earth materials being used.
Engineers from the University of New South Wales have designed a high-speed motor that has a huge possibility of elevating the range of electric vehicles.
The design of the Interior Permanent Magnet Synchronous Motor (IPMSM), has the capability of 100,000 revolutions per minute, which was significant taking into account the motor which is able to form a very high-power density. This is useful for Electric Vehicles (EV) in reducing overall weight, hence elevating the range for all given charges.
Associate Professor Rukmi Dutta and Dr Guoyu Chu from the university’s School of Electrical Engineering and Telecommunications put together the new technology which was an upgrade of current IPMSMs. The technology has been patented where the robustness lowers rare earth materials per unit in power production.
The design was established from the engineering properties of the Gyopo rail bridge, a double-tied arch structure from South Korea, together with the motor’s spectacular power density which can bring about better performance for EVs where weight is significant.
Dr Chu said “Every EV manufacturer is trying to develop high-speed motors and the reason is that the nature of the law of physics then allows you to shrink the size of that machine. And with a smaller machine, it weighs less and consumes less energy and therefore that gives the vehicle a longer range.
He further said “With this research project we have tried to achieve the absolute maximum speed, and we have recorded over 100,000 revolutions per minute and the peak power density is around 7kW per kilogram.
The rapid advancement of the use of EVs in recent year has amplified calls for the removal of obstacles such high initial cost, and unavailability of charger which are likely to be minimized as the number of EVs increase.
