Mainstream develops custom high-speed, variable-frequency motor drives for demanding applications where commercial drives are not suitable.  The power devices are mounted to custom-designed coldplates to minimize size and weight and package the drive in a hermetically sealed enclosure to reduce sand and dust intrusion.  Examples include 2 kW bi-directional PM motor drives for ISA/hybrid vehicle and portable generator applications, 60 kW drive for ram air turbine motor/generator, 15 kW high efficiency (> 98%) SiC drives for ultra-high-speed (>100,000 rpm) pm motor/generators, and 10 kW drive for a high-speed water pump for ground-based radar systems.