Next generation UK-manufactured motor reaps efficiency gains for heavy duty applications
Advanced Electric Machines (AEM) sets new standards in electric motor efficiency with next-generation solution
- New HDRM300C motor brings stronger performance and greater efficiency to AEM’s commercial vehicle-focused motor
- Revolutionary compressed coil technology achieves over 80% conductor slot fill rate compared to conventional 60%
- Enhanced thermal management and cooling design delivers superior continuous performance; higher top speed adds greater flexibility for customers
- Samples available from March, production due to commence in Q4 2025
Advanced Electric Machines (AEM), the UK-based manufacturer of sustainable, magnet-free electric motors, has unveiled the second generation of its popular solution for heavy duty and commercial vehicle applications. HDRM300C strengthens AEM’s position as a leading producer of rare-earth free motors and provides customers with an enhanced motor that offers stronger performance and greater efficiency.
Building on the success of its HDRM150 motor, where AEM first developed and validated its innovative coil compression technology, the HDRM300C represents a major advancement in electric motor design, achieving industry-leading 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,” says 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 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 will be trialled with select partners from March 2025, with full production scheduled to commence in Q4 2025. The launch represents a significant milestone in AEM’s mission to revolutionise electric motor technology and establish new standards for sustainable transportation.
*Please note the omittance of ‘S’ in the product name (formally HDSRM). This is a product line rebrand and also applies to AEM’s HDRM150 motor.
About AEM
Advanced Electric Machines’ vision is to design and build the world’s most sustainable EV motors for the global automotive and transport sectors. It utilises its expertise in materials, manufacturing and design to ensure its solutions are not only more sustainable, but also more efficient and cost-effective.
Based in the Northeast of England, Advanced Electric Machines Limited was founded in 2017, when it was spun out from Newcastle University’s world-class electric motor research team, led by AEM’s CEO, Dr James Widmer, and CTO, Dr Andy Steven.
AEM technologies are covered by 46 international patents protecting their unique motor designs and manufacturing processes around the world.
Contacts:
Advanced Electric Machines
John Edden, Torque Agency Group
jedden@torqueagencygroup.com | +44 (0) 7403 640 213
Euan Antona, Torque Agency Group
eantona@torqueagencygroup.com | +44 (0) 7702 334 887