YASA, a developer of axial flux electric motors, has reported a new internal power density benchmark for its latest prototype design.
Earlier in the summer, the company recorded 550 kW (738 bhp) from a 13-kg version of its axial flux prototype motor, equivalent to an unofficial power density of 42 kW/kg.
Recent testing of a lighter 12.7 kg unit has exceeded that level.
The latest prototype achieved a short-term peak rating of 750 kW (greater than 1000 bhp), resulting in an unofficial power density of 59 kW/kg. YASA estimates that continuous output for this design will fall in the range of 350 to 400 kW (469 bhp to 536 bhp).
The prototype was designed and developed at YASA’s Oxford Innovation Centre. It’s a functional motor currently undergoing a structured development and validation program. The unit uses a compact axial flux architecture with scalable materials, thermal management strategies, and optimized packaging. Development work has been supported by the Advanced Propulsion Centre, UK.
“To achieve a 750 kW short-term peak rating and a density of 59 kW/kg is an important validation of our next-generation axial flux work,” said Tim Woolmer, Founder and CTO, YASA. “The prototype is running on the test stands now, and we are continuing to refine and validate the design using scalable processes and materials.”
YASA’s engineering team is continuing extended testing to characterize performance, durability, and thermal behavior.
Filed Under: Electric Motor, Technology News