Hydraulic Power Transmission Applications in Pulsed Inertial Energy Storage Generators
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Pulsed inertial energy storage generators such as homopolar generators, compensated pulsed alternators, and rotary flux compressors must be motored to relatively high, precisely controlled speeds at power levels of several hundred kW, and then quickly decoupled from the prime mover because of the deceleration rates associated with the discharge pulses. High pressure hydraulic motors directly connected to the generator shaft are attractive because of their low inertia and small physical size. Also, hydraulic drives can be efficiently decoupled with valves. Hydraulic drives can be easily adapted to many conventional prime movers. Three specific hydraulic motoring systems are discussed. Special control considerations are presented and discussed.