Patent ID: 7078880

Claim:
A system for regulating voltage in an electrical supply system, comprising: a plurality of energy storage flywheels; a plurality of motor/generators, each motor/generator coupled to one of the energy storage flywheels and to the electrical supply system and configured to operate in either (i) a motor mode, whereby electrical energy from the electrical supply system is converted to rotational kinetic energy and supplied to its respective energy storage flywheel or (ii) a generate mode, whereby rotational kinetic energy from its respective energy storage flywheel is converted to electrical energy and supplied to the electrical supply system, each motor/generator further configured to supply a plurality of signals, each signal representative of a motor/generator operational parameter; and a plurality of motor/generator controllers, each motor/generator controller coupled to receive a plurality of the motor/generator operational parameter signals from each of the motor/generators and operable, in response thereto, to control operation of one of the motor/generators in either the motor mode or the generate mode, to thereby regulate the electrical supply system voltage and substantially equally share electrical load between the motor/generators.