UK-MANUFACTURED TRACTION MOTOR REAPS EFFICIENCY GAINS FOR HEAVY DUTY APPLICATIONS
Building on the success of its HDRM150 motor, where AEM introduced its coil compression technology, the HDRM300C represents an advancement in electric motor design, achieving conductor slot fill rates exceeding 80%. This proven technology, now evolved and scaled up from the smaller HDRM150, delivers measurably better power density and efficiency compared to conventional wire layouts that typically achieve less than 60% fill rates.
“The HDRM300C represents more than just an incremental improvement in motor technology," said James Widmer, CEO of Advanced Electric Machines. "By combining our patented coil compression technology with enhanced thermal management and improved speed capabilities, we're delivering a motor that sets new benchmarks for efficiency and performance. For the transportation industry, this means more capable electric vehicles that are more cost effective to operate and maintain."
The motor’s practical benefits extend beyond pure performance. The HDRM300's increased speed capability provides greater flexibility for system integration across diverse applications. New plug-in connectors have replaced traditional gland fittings, simplifying the installation and maintenance process, while maximising overall reliability. Internal components, including upgraded bearings and robust busbar connections, have been strengthened to support the motor’s higher operational speeds.
An improved motor cooling system, which works similarly to a car’s radiator, allows the machine to work harder for longer without overheating. This is particularly important for commercial vehicles, where consistent performance throughout the day is crucial. For fleet operators and vehicle manufacturers, this translates to vehicles that can carry heavier loads, climb steeper hills, and operate in more demanding conditions without compromise.
Sample units began trials with select partners in March 2025, with full production scheduled to commence in Q4 2025.
