More power
MOTORS
Smaller & Lighter
Coolshaft™
Rare Earth Magnets
Reinvent the Motor
Cheaper
Reinvent the Motor
Continuous Power
cost reduction
Electrically Excited Synchronous Motors (EESMs), also known as Wound-Field Synchronous Motors, are widely recognised as the only long-term replacement for rare-earth permanent-magnet motors (PMMs) by the industry. They supply constant power range, high peak torque/power and high efficiency. These are essential requirements for OEMs.
But the current EESM design come with major drawbacks and challenges, hence they have not been widely adopted.
Current EESMs come with complex rotors winding, suffer from severe rotor heat limitation, require sliprings or excitor, and they need specialist power-electronics. These issues increase cost, weight, and complexity, forcing OEMs to redesign their power electronics, controls, or even full platforms.
UniSync™ – A New Class of Magnetless Motor built on our breakthrough Unified Excitation Synchronous Motor (UESM) topology.
We’ve engineered the first drop-in, magnet-free motor that removes every historical barrier to adoption, allowing OEMs to replace their PM motors with magnetless without the need for any changes to platform, or power electronics without power compromises common to magnetless topologies.
UniSync™ combines advanced cooling, integrated excitation, next-gen rotor winding and breakthrough controls to deliver PM-class (and beyond) performance with zero rare-earths and no platform changes.
Magnet-free, without compromise.
Neodymium rare-earth magnets deliver unparalleled power density, efficiency, and controllability. Replacing a rare-earth magnet machine with magnetless counterpart while maintain the same wide range performance, weight, size, and efficiency is a true challenge.
The Wound-Field Synchronous Motor (WFSM, also known as the Externally Excited Synchronous Motor (EESM), has been widely considered the only the only topology capable of delivering the continuous-power range, high torque, and high efficiency required for passenger EVs and heavy-duty applications. However, EESM being developed for release in the next few years have complex/large/expensive oil cooling systems, can’t match the performance of PM motors and require specialist power electronics. Our breakthrough UESM topology and UniSync™ motor eliminates these issues, heralding the way for the replacement of rare-earth permanent magnet motors.
The 4 main Magnetless topologies vs Neodymium & UESM
• Rare-earth free – It doesn’t have rare-earth magnets
• Controllable excitation – flexible output – The ability to control the motor’s magnetic field by adjusting the current in the rotor’s field windings is a key advantage. This provides flexible control over torque, speed, and power factor. Hence achieving high peak torque and wide continuous power
• High efficiency – at the regions that matters in the WLTP –
Compared to magnet motors, it has higher efficiency at the medium to high-speed low torque region where the WLTP operating points are concentrated, hence achieving higher WLTP efficiency
• High continuous power over wide speed range
In a well-designed would field motor, a steady continuous power can be achieved over a speed range extending from the base speed to the maximum speeds
UESMs are the only magnet-free motors that can match PM performance, making them the natural successor to rare-earth machines. We focus on continuous power because that’s what really limits EV performance, efficiency, and cost.
The most common in EVs due to their power density, efficiency and easy to manufacture.
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Cooled Motors is addressing EESM’s barriers through its proprietary thermal-management technologies, CoolShaft™ and CoolDisc.
In addition, we have developed an innovative exciter and control design that is compatible with standard three-phase power electronics, allowing seamless replacement of PM motors without costly platform changes. This represents a step-change in smart motor design.
You can now eliminate magnets without having to make performance or complexity sacrifices. UniSync™ is a drop-in replacement for PM Motors.
Same tech across different applications.
Parts scalable and applicable across different applications.
Conventional Power Electronics, same size and weight, replaces PM motors.
No need for retooling. Compatible with standard manufacturing proceses
UniSync™ technologies go beyond traction motors in passenger electric vehicles, UniSync™ is ideal for any electric machine which requires compact continuous power.
Eliminates magnets without performance compromise, reduced costs motors
Transition to Magnetless fitting existing engine bay constraints – hybrid without platform redesign
Performance, without magnets.
Magnetless motors – Material Security – dual application
PM+ Performance in a magnetless package. Reducing costs, emission and speed to market.
Fully sealed magnetless motors for maximum performance, compactness and reduced costs.
Utilise our ESSG technologies to increase the performance of wind Turbnines while eliminating magnets.
with our magnetless EESM, we unlock:
& a clear path toward next-generation, magnet-free electric motors
