High-speed machines allow for a directly driven high-speed system, eliminating the low-speed motor-gearbox arrangement to provide a high-speed drive shaft output. A high-speed motor generator can directly drive, or be driven by, a high-speed turbine, compressor or other turbomachinery. High-speed machines offer significant reduction in motor generator size, as well as reduced motor generator cost and simplified integration.  Integration of these small, highly efficient machines into the coupled equipment further reduces cost and complexity.