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High Energy Storage Flywheel

A 15,000 rpm, 130 kWh composite flywheel was designed for high-speed passenger rail service.  The rotor weighs 5000 lb.  It utilizes a 5-axis levitation system with permanent magnet bias homopolar magnetic bearings.  The radial bearings employ co-located optical position sensors.  The thrust bearing has a single stator sandwiched between a pair of thrust runners.  This flywheel utilizes a rotatory vacuum seal to directly couple to an air cooled 2 MW induction motor/generator (not shown). Contact: Dr. Brian Murphy Center for Electromechanics University of Texas at Austin