Patent ID: 7358620

Claim:
A power supplying apparatus, comprising: a direct current (dc) bus configured to route a dc power; a first power conversion circuitry that is electrically coupled to the dc bus and that is configured to convert the dc power to a first alternating current (ac) power at a variable frequency; a second power conversion circuitry that is electrically coupled to the dc bus and that is configured to convert the dc power to a second ac power at a given frequency; a third power conversion circuitry that is electrically coupled to the dc bus and that is configured to convert an external ac power to the dc power wherein the first ac power is transmitted via a first ac bus, the second ac power is transmitted via a second ac bus, the third ac power is transmitted via a third ac bus, and wherein the first ac bus, the second ac bus, and the third ac bus are separate from one another; an electrical machine, comprising: a kinetic energy storage device; a stator having a rotor chamber and electrical conductors configured to receive the first ac power; and a rotor disposed in the rotor chamber and mechanically coupled to the kinetic energy storage device, wherein the first power conversion circuitry is configured to provide the first ac power at the variable frequency to generate power from the electrical machine; and a complementary device configured to receive the second ac power at the given frequency from the second power conversion circuitry, wherein the complementary device is configured to provide resources to complement operation of the electrical machine, and wherein the complementary device is mechanically coupled to the electrical machine.