Patent ID: 6160336
Filing Date: 2000-12-12
Classification: G21K,H02K,H02N,Y02E,Y10T

Abstract:
An energy storage device comprising:a rotatable flywheel having a rim spaced a predetermined distance from the center of the flywheel;a support structure for the flywheel;a series of permanent magnets located at spaced intervals along the periphery of the rim;a series of coils disposed at spaced intervals adjacent the rim in operative electromagnetic field relationship with the magnets;a power source for supplying electrical energy to the coils to cause the flywheel to rotate up to a predetermined speeds;a power take-off for receiving electric energy from the coils as the flywheel rotation diminishes;computer control means operatively connected to the power source and power take-off for selectively connecting the coils in series and parallel circuit relationships, and in coils of different length in response to operation of the device in an electric generator, electric motor, free-wheeling, rotational rate modulating or dynamically balancing configuration.