The direct-winding heat exchange (DWHX) cooling system is capable of removing up to 25 times the heat of conventional cooling systems, according to its manufacturer. The system is situated directly at the heat source – the stator windings.

The proprietary technology, which uses a micro-feature-enhanced heat exchanger, is directly connected to the windings of an electric machine thermally, not electrically. DHX Electric Machines Inc. says the system provides a fivefold increase in torque volume, allowing DHX electric motors to produce the same torque in 75 percent of the space as a conventional motor.