ePropelled caught the attention of the Automotive World magazine, whose goal it is to help readers understand the future of mobility. They asked to interview our CTO, Dr. Nabeel Shirazee for a feature on AC and DC motors.
During the interview they covered the perceived status of AC and DC motors as competitors since they appear to have mutually exclusive applications. As quoted in the article:
“DC motors (…) are much more robust and easier to control, capable of delivering high torque at lower speeds and keeping the price threshold low for manufacturers.
(…) In contrast, AC motors are highly efficient and reliable, maintain regenerative capacities for battery management and require less maintenance.”
During the interview, Nabeel outlined that comparing the two is not a relevant exercise because efficiency, reliability, and price considerations will always apply to both. And this also has a lot to do with materials and their availability, magnet and copper being examples used in the article.
Nabeel is not new to this business. He holds degrees in electrical and electronic engineering and in magnetic engineering. He earned his Ph.D. at Cardiff University, where he developed a permanent magnet lifting system that the university patented. His interest in magnetics and materials science is influencing his research and earning patents, so his opinion is based on years of hands-on experience and original thinking.
His outlook on this issue is that a simultaneous development is the way forward. The article quotes him:
“Shared development is easier for both types of electric motors, reducing hardware costs while improving value chains around AC and DC motor production. As more manufacturers look for greater levels of efficiency at a lower price threshold, simultaneous development of both forms of motors and cooperation among manufacturers and suppliers is likely to be the answer.”
From his experience, from what he’s achieved over the years, and from what he’s working on at ePropelled, Nabeel is convinced that the construction of the AC and DC motors will be changing significantly in the next few years.
There is a shift in material use (for example a slow move away from copper) and manufacturers know that with increased demand, they will need to face either material shortages or design motors that use fewer raw materials.
An increase in efficiency and reliability is going to define motor optimums in the near future and that this is going to be reliant on sustainability and alternative materials. As a result, significant changes are inevitable, forced by the wide adoption of EVs and related technical demands.
To read more about the exciting possibilities in the area of electric propulsion, make sure to read the article here.